The most cited strength training studies, 25 across seven topics
The most cited strength training papers, by OpenAlex counts read 31 Oct 2026, are the American College of Sports Medicine's 2011 exercise position stand (9,314 citations) and its resistance training stand, ranked by the 2009 version (4,332) and updated in 2026. Next come a 1,880 person study showing strength fades faster than muscle with age, and Fiatarone's 1994 and 1990 training studies in frail nursing home residents.
This page lists the most cited papers in seven topics a beginner asks about, 25 in all, ranked by how often later papers cite them, which shows influence, not quality. Each topic has a fixed number of slots, so it is not a strict top 25: some eligible papers have more citations than entries in other topics, and many of them are named under papers just outside the list. Each entry gives the study type, who was studied and how many when the abstract says, a plain-English summary written from the abstract, and why it matters to someone lifting at home. Jump to how we built the list, the list, papers just outside it or famous papers we left out.
How we built this list
We searched OpenAlex, a free index of scholarly works, on 31 Oct 2026 with ten title and abstract phrase searches (such as "resistance training", "strength training", "grip strength" and "muscle hypertrophy"), two topic slices, eleven title searches and a check list of 60 famous papers looked up by DOI, giving 1,198 candidates. A second check the same day added papers the searches had missed.
We kept human studies and official guidance whose main subject, in the title or stated aim, is resistance training or muscular strength in generally healthy adults or older adults, so papers about children or adolescents are left out. We dropped diagnosis definitions and papers about sarcopenia, the loss of muscle with age, as a condition (what it is, how to diagnose it, its causes or how common it is), drug trials, disease-only trials, animal work, measurement-method papers, books, and single-session laboratory studies of muscle protein synthesis, which measure a short-term marker after one workout rather than the results of training.
Broad exercise guidance counts only when its title names muscular or musculoskeletal fitness, as the ACSM 2011 stand does; general physical activity guidelines are listed under the papers we left out. Official guidance issued in more than one version is one entry, ranked by its most cited version and headed by the newest, with the older versions listed in the entry. Combined strength and endurance training (Hickson 1980) counts under load, sets, volume and frequency, because its main outcome is strength and how training is combined is a programming choice. Within a topic, one paper per question: when two candidates answer the same question, we keep the one that first reported the finding and list the other under the papers we left out.
To cover the questions beginners ask, we filled seven topics with a fixed number of slots and took the most cited papers in each: official guidance 4, how strength is gained 5, load, sets, volume and frequency 6, lifting in older age 4, strength as a health marker 4, bone, blood pressure and mood 1, and protein 1. Because the slots are fixed, some eligible papers have more citations than the lowest entries in other topics; many of them are listed under papers just outside the list. Counts are OpenAlex's, read 31 Oct 2026. Where OpenAlex splits a paper across two records, we use the record that carries its PubMed ID and check it against Crossref. Counts were cross-checked against Semantic Scholar, Crossref and Europe PMC on the same day. Every summary is written from the paper's abstract on PubMed, and every number in a summary appears in that abstract.
These summaries describe what each study found. They are not personal medical advice.
The list
- American College of Sports Medicine position stand. Quantity and quality of exercise for developing and maintaining cardiorespiratory, musculoskeletal, and neuromotor fitness in apparently healthy adults: guidance for prescribing exercise (2011)
- American College of Sports Medicine Position Stand. Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults: An Overview of Reviews (2026)
- The loss of skeletal muscle strength, mass, and quality in older adults: the health, aging and body composition study (2006)
- Exercise training and nutritional supplementation for physical frailty in very elderly people (1994)
- High-intensity strength training in nonagenarians. Effects on skeletal muscle (1990)
- Fundamentals of resistance training: progression and exercise prescription (2004)
- Prognostic value of grip strength: findings from the Prospective Urban Rural Epidemiology (PURE) study (2015)
- Increased rate of force development and neural drive of human skeletal muscle following resistance training (2002)
- Strength, but not muscle mass, is associated with mortality in the health, aging and body composition study cohort (2006)
- Midlife hand grip strength as a predictor of old age disability (1999)
- Neural adaptation to resistance training (1988)
- Hormonal responses and adaptations to resistance exercise and training (2005)
- Strength conditioning in older men: skeletal muscle hypertrophy and improved function (1988)
- The adaptations to strength training : morphological and neurological contributions to increased strength (2007)
- Neural factors versus hypertrophy in the time course of muscle strength gain (1979)
- Resistance Training for Older Adults: Position Statement From the National Strength and Conditioning Association (2019)
- Progressive resistance strength training for improving physical function in older adults (2009)
- The mechanisms of muscle hypertrophy and their application to resistance training (2010)
- Resistance Exercise Training in Individuals With and Without Cardiovascular Disease: 2023 Update: A Scientific Statement From the American Heart Association (2023)
- A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults (2018)
- Muscular adaptations in response to three different resistance-training regimens: specificity of repetition maximum training zones (2002)
- Effects of high-intensity strength training on multiple risk factors for osteoporotic fractures. A randomized controlled trial (1994)
- Strength and Hypertrophy Adaptations Between Low- vs. High-Load Resistance Training: A Systematic Review and Meta-analysis (2017)
- Effects of resistance exercise combined with moderate vascular occlusion on muscular function in humans (2000)
- Interference of strength development by simultaneously training for strength and endurance (1980)
1. American College of Sports Medicine position stand. Quantity and quality of exercise for developing and maintaining cardiorespiratory, musculoskeletal, and neuromotor fitness in apparently healthy adults: guidance for prescribing exercise (2011)
- Topic: Official guidance: how much and how to lift
- Citations: 9,314 in OpenAlex (Semantic Scholar 8,476; Crossref 7,850; Europe PMC 5,811), read 31 Oct 2026
- Study type: Position stand (expert guidance based on a review of evidence). Who: Apparently healthy adults of all ages. Size: Not applicable (guidance document).
The American College of Sports Medicine's main exercise guidance for apparently healthy adults of all ages, replacing its 1998 version. Alongside aerobic, flexibility and balance work, it recommends resistance exercises for each major muscle group on 2 to 3 days a week. It says people who cannot reach the targets still benefit from doing less, that gradual progression may reduce risk, and that heart testing is not recommended as routine screening for everyone. It is expert guidance, not a new trial.
Why it matters to a home lifter: It is the ACSM source for training every major muscle group 2 to 3 days a week, a simple target for a home routine.
Earlier version counted here: ACSM Position Stand: The Recommended Quantity and Quality of Exercise for Developing and Maintaining Cardiorespiratory and Muscular Fitness, and Flexibility in Healthy Adults (1998), 3,051 OpenAlex citations.
2. American College of Sports Medicine Position Stand. Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults: An Overview of Reviews (2026)
- Topic: Official guidance: how much and how to lift
- Citations: Ranked by its most cited version, the 2009 stand: 4,332 in OpenAlex (Semantic Scholar 4,211; Crossref 3,378; Europe PMC 2,501). The 2026 stand itself: 81 in OpenAlex (Semantic Scholar 64; Crossref 86; Europe PMC 36). Counts read 31 Oct 2026
- Study type: Position stand based on an overview of systematic reviews. Who: Healthy adults aged 18 or older in randomized resistance training trials of at least 6 weeks. Size: 137 systematic reviews, more than 30,000 participants.
ACSM's current resistance training guidance for healthy adults, updating its 2009 stand. It pooled 137 systematic reviews of randomized trials (more than 30,000 participants). Compared with no exercise, training improved strength, muscle size, power, walking speed, balance and physical function. Few program choices changed the main results much, but strength gained more from heavier loads (80 percent of one-rep max or more), a full range of motion, 2 to 3 sets, lifting early in the session and at least 2 sessions a week, and muscle size from 10 or more sets a week.
Why it matters to a home lifter: The current ACSM source for a home program: heavier loads, 2 to 3 sets and at least 2 sessions a week for strength, and 10 or more weekly sets for muscle size.
Earlier versions counted here: Progression models in resistance training for healthy adults (2009), 4,332 OpenAlex citations, the version this entry is ranked by (DOI 10.1249/mss.0b013e3181915670 | PubMed 19204579), and Progression Models in Resistance Training for Healthy Adults (2002), 2,979 OpenAlex citations.
What the replaced stand advised: novices should use loads they can lift for 8 to 12 repetitions, train 2 to 3 days a week, and add 2 to 10 percent to the load once they can do 1 or 2 reps beyond the target.
Our plain-English explainer of this stand, with its recommendations by goal, the evidence behind each and what changed from 2009: ACSM strength training guidelines 2026.
3. The loss of skeletal muscle strength, mass, and quality in older adults: the health, aging and body composition study (2006)
- Topic: Strength as a health marker
- Citations: 3,083 in OpenAlex (Semantic Scholar 2,996; Crossref 2,641; Europe PMC 2,147), read 31 Oct 2026
- Study type: Prospective cohort study (observational). Who: Older adults in the Health, Aging and Body Composition Study. Size: 1,880.
A 3-year cohort study of 1,880 older adults in the Health, Aging and Body Composition Study. Leg strength fell about 2.6 to 4.1 percent a year depending on sex and race, roughly three times faster than leg lean mass, which fell about 1 percent a year. Men lost almost twice as much strength as women. In people who gained lean mass, strength was not maintained or gained. It is observational: it tracked changes with age and did not test exercise.
Why it matters to a home lifter: With age, strength dropped faster than muscle mass, so keeping muscle alone may not keep strength.
4. Exercise training and nutritional supplementation for physical frailty in very elderly people (1994)
- Topic: Lifting in older age
- Citations: 2,857 in OpenAlex (Semantic Scholar 2,946; Crossref 2,166; Europe PMC 1,628), read 31 Oct 2026
- Study type: Randomized placebo-controlled trial. Who: Frail nursing home residents, mean age 87.1 (range 72 to 98). Size: 100.
A randomized, placebo-controlled trial in 100 frail nursing home residents (average age 87.1, range 72 to 98) over 10 weeks, testing progressive resistance training, a nutritional supplement, both, or neither. Strength rose 113 percent with training versus 3 percent without. Walking speed rose 11.8 percent in exercisers and fell 1.0 percent in non-exercisers, and stair-climbing power also improved. The change in thigh muscle area was not statistically significant, and the supplement had no effect on the main outcomes.
Why it matters to a home lifter: Showed that very old, frail adults gained large amounts of strength, and some walking speed, from 10 weeks of progressive training.
5. High-intensity strength training in nonagenarians. Effects on skeletal muscle (1990)
- Topic: Lifting in older age
- Citations: 2,035 in OpenAlex (Semantic Scholar 2,434; Crossref 2,076; Europe PMC 1,201), read 31 Oct 2026. OpenAlex splits this paper across two records; this count is from the one that carries its PubMed ID, and the other shows 1,593.
- Study type: Training study (small, before and after; the abstract describes no control group). Who: Frail nursing home residents aged about 90. Size: 10 (9 completed).
A small study of 10 frail nursing home residents aged about 90 who did 8 weeks of high-intensity resistance training. Among the 9 who finished, strength rose by an average of 174 percent, midthigh muscle area by 9.0 percent and tandem walking speed by 48 percent. At the start, weaker thigh strength went with slower walking. The abstract describes no control group and the sample was tiny, so it shows what was possible rather than what an average older adult would gain.
Why it matters to a home lifter: An early demonstration that age 90 is not too late to gain strength and muscle with heavy training.
6. Fundamentals of resistance training: progression and exercise prescription (2004)
- Topic: Load, sets, volume and frequency
- Citations: 1,975 in OpenAlex (Semantic Scholar 1,953; Crossref 1,445; Europe PMC 977), read 31 Oct 2026
- Study type: Narrative review. Who: Not applicable (review). Size: Not applicable (review).
A review of how to design and progress a resistance training program. It starts from individual needs and goals, such as which muscles to train, sites prone to injury and the metabolic demands of the goal. Each workout is then built from a set of choices: exercises, their order, rest between sets and exercises, repetitions and sets, and intensity. Over time those variables are changed to keep progressing and to avoid overtraining. Goal setting, testing, good technique, supervision and sound prescription are named as keys. It offers no new data.
Why it matters to a home lifter: Names the program variables a home lifter can adjust: exercise choice, order, rest, sets, reps and load.
7. Prognostic value of grip strength: findings from the Prospective Urban Rural Epidemiology (PURE) study (2015)
- Topic: Strength as a health marker
- Citations: 1,874 in OpenAlex (Semantic Scholar 1,711; Crossref 1,707; Europe PMC 1,370), read 31 Oct 2026
- Study type: Prospective cohort study (observational). Who: Adults in 17 countries of varying incomes (PURE study). Size: 139,691.
A cohort study of 139,691 people in 17 countries of varying incomes, followed for a median of 4.0 years. Each 5 kg lower grip strength was linked with a higher risk of death from any cause (hazard ratio 1.16), and with higher risks of cardiovascular death, heart attack and stroke. Grip strength predicted death better than systolic blood pressure did. It was not linked with diabetes, fall injuries or fractures. Being observational, it cannot show that getting stronger lowers risk, which the authors say needs testing.
Why it matters to a home lifter: Grip strength is a cheap marker of health risk; this study does not prove that training grip, or lifting, lengthens life.
8. Increased rate of force development and neural drive of human skeletal muscle following resistance training (2002)
- Topic: How strength is gained
- Citations: 1,844 in OpenAlex (Semantic Scholar 1,895; Crossref 1,454; Europe PMC 1,139), read 31 Oct 2026
- Study type: Training study (single group, before and after). Who: Men. Size: 15.
A training study in 15 men who did 14 weeks (38 sessions) of heavy resistance strength training. Maximal isometric knee extension strength rose from 291.1 to 339.0 newton meters, and the rate of force development, meaning how fast force builds in the first 200 milliseconds of a contraction, also increased. Muscle electrical activity (EMG) rose sharply early in each contraction, which the authors read as stronger drive from the nervous system. The abstract describes no control group, and only men were studied.
Why it matters to a home lifter: Suggests heavy training improves how fast you can produce force, not only how much, partly through nervous system changes.
9. Strength, but not muscle mass, is associated with mortality in the health, aging and body composition study cohort (2006)
- Topic: Strength as a health marker
- Citations: 1,690 in OpenAlex (Semantic Scholar 1,647; Crossref 1,428; Europe PMC 1,229), read 31 Oct 2026
- Study type: Prospective cohort study (observational). Who: Adults aged 70 to 79 in the Health ABC Study. Size: 2,292.
A cohort study of 2,292 adults aged 70 to 79 in the Health ABC Study, followed for about 4.9 years, during which 286 died. Lower thigh and grip strength were strongly linked with higher death risk, while muscle size measured by CT or DXA scans was not strongly linked. Adjusting for muscle size and many other factors barely changed the strength link. The authors conclude that strength, as a marker of muscle quality, matters more than muscle quantity for estimating risk. It did not test training.
Why it matters to a home lifter: For older adults, strength was more closely linked with risk of death than muscle size; the study does not show that training changes that risk.
10. Midlife hand grip strength as a predictor of old age disability (1999)
- Topic: Strength as a health marker
- Citations: 1,478 in OpenAlex (Semantic Scholar 1,570; Crossref 1,206; Europe PMC 1,019), read 31 Oct 2026
- Study type: Prospective cohort study (observational, 25 years). Who: Initially healthy Japanese-American men aged 45 to 68 (Honolulu Heart Program). Size: 6,089 at baseline; 3,218 survivors assessed.
A 25-year cohort study of 6,089 initially healthy Japanese-American men on Oahu, Hawaii, aged 45 to 68 when grip strength was measured in 1965 to 1970. Among 3,218 survivors assessed in 1991 to 1993, men in the weakest third at midlife had 2.87 times the odds of very slow walking, and more than twice the risk of self-care disability, compared with the strongest third. It studied only Japanese-American men and shows an association, not cause and effect.
Why it matters to a home lifter: Links midlife grip strength with independence 25 years later; the authors suggest good strength may give a safety margin against disability.
11. Neural adaptation to resistance training (1988)
- Topic: How strength is gained
- Citations: 1,421 in OpenAlex (Semantic Scholar 1,527; Crossref 985; Europe PMC 767), read 31 Oct 2026
- Study type: Narrative review. Who: Not applicable (review). Size: Not applicable (review).
A review of evidence that strength gains come partly from the nervous system, not only from bigger muscles. It argues that training lets people activate their main working muscles more fully and coordinate all the muscles involved in a movement. The most direct evidence came from electromyography (EMG) studies, supported by studies of the cross-training effect, in which training a limb also affects the untrained limb, and of gains being specific to the trained movement. It also weighs the roles of nervous system and muscle changes in short and long training periods.
Why it matters to a home lifter: Supports the idea that practicing the exact lift matters, since part of getting stronger is the nervous system adapting to the movement.
12. Hormonal responses and adaptations to resistance exercise and training (2005)
- Topic: How strength is gained
- Citations: 1,389 in OpenAlex (Semantic Scholar 1,505; Crossref 1,026; Europe PMC 784), read 31 Oct 2026
- Study type: Narrative review. Who: Not applicable (review). Size: Not applicable (review).
A review of how hormones respond to resistance exercise. It reports that testosterone and growth hormone rise for 15 to 30 minutes after a hard enough session, while many studies found no significant change in resting hormone levels during resistance training, even as strength and size increased. Sessions with high volume, moderate to high loads, short rests and large muscle groups produced the biggest short-term rises, including in the stress hormone cortisol. The authors argue these short rises matter for growth; the review does not test whether bigger rises cause bigger gains.
Why it matters to a home lifter: Background for the gym claim that some workouts boost hormones: the review describes short-lived rises, not proof that they drive muscle growth.
13. Strength conditioning in older men: skeletal muscle hypertrophy and improved function (1988)
- Topic: Lifting in older age
- Citations: 1,386 in OpenAlex (Semantic Scholar 1,550; Crossref 967; Europe PMC 719), read 31 Oct 2026
- Study type: Training study (single group, before and after). Who: Healthy untrained men aged 60 to 72. Size: 12.
A 12-week study in 12 healthy, untrained men aged 60 to 72 who trained the knee extensors and flexors at 80 percent of one-rep max, 3 sets of 8 repetitions, 3 days a week. One-rep max rose 107.4 percent for extension and 226.7 percent for flexion. CT scans showed total thigh muscle area up 11.4 percent, and biopsies showed both main fiber types grew. The study was small, included only men, trained only the knee muscles, and the abstract describes no control group.
Why it matters to a home lifter: Shows that older men built muscle, not just strength, on a simple plan of 3 sets of 8 at 80 percent of max.
14. The adaptations to strength training : morphological and neurological contributions to increased strength (2007)
- Topic: How strength is gained
- Citations: 1,347 in OpenAlex (Semantic Scholar 1,098; Crossref 1,052; Europe PMC 870), read 31 Oct 2026
- Study type: Narrative review. Who: Not applicable (review). Size: Not applicable (review).
A review of why strength training makes people stronger. The main muscle change is growth in the cross-section of whole muscles and single fibers, with satellite cells active from very early in training. Nervous system changes include better coordination between muscles and small increases in how fully the working muscle is activated. The authors conclude that gains come from a wide mix of nervous system and muscle factors, with nervous system factors probably contributing most early on, while muscle growth processes also start when training begins.
Why it matters to a home lifter: Suggests early progress is driven mostly by the nervous system while muscle growth also starts from the beginning of training.
15. Neural factors versus hypertrophy in the time course of muscle strength gain (1979)
- Topic: How strength is gained
- Citations: 1,302 in OpenAlex (Semantic Scholar 1,568; Europe PMC 783), read 31 Oct 2026
- Study type: Training study (small, before and after). Who: Young men and women. Size: 7 men and 8 women.
A small study of 7 young men and 8 young women over 8 weeks of strength training. The authors concluded that nervous system factors explained most of the early strength gain, and that muscle growth became the main contributor after the first 3 to 5 weeks. Results in the untrained opposite arm supported cross education, where training a limb also strengthens the opposite, untrained limb, which they attributed to nervous system changes. The sample was small and the training lasted only 8 weeks.
Why it matters to a home lifter: An early and heavily cited source for the idea that first gains come mostly from the nervous system, with muscle growth taking over after a few weeks.
16. Resistance Training for Older Adults: Position Statement From the National Strength and Conditioning Association (2019)
- Topic: Official guidance: how much and how to lift
- Citations: 1,286 in OpenAlex (Semantic Scholar 1,060; Crossref 1,165; Europe PMC 775), read 31 Oct 2026
- Study type: Position statement (narrative review with recommendations). Who: Older adults. Size: Not applicable (review of research).
The National Strength and Conditioning Association's position statement on resistance training for older adults. It notes that aging, even without disease, brings losses in muscle mass, strength and function, and reviews research showing that resistance training counters loss of strength and muscle and supports mobility, independence and quality of life. It covers program design, adaptations, functional benefits, and adjustments for frailty, sarcopenia and chronic conditions, and aims to reduce the fears that keep older adults from lifting. It reviews research rather than reporting new data.
Why it matters to a home lifter: A professional body recommends resistance training for older adults and addresses common fears about starting.
17. Progressive resistance strength training for improving physical function in older adults (2009)
- Topic: Lifting in older age
- Citations: 1,255 in OpenAlex (Semantic Scholar 1,193; Crossref 462; Europe PMC 586), read 31 Oct 2026
- Study type: Cochrane systematic review and meta-analysis of randomized trials. Who: Older people. Size: 121 trials, 6,700 participants.
A Cochrane systematic review of 121 randomized trials with 6,700 older participants doing progressive resistance training, usually 2 to 3 times a week at high intensity. Training had a large effect on muscle strength, a modest effect on walking speed (about 0.08 meters per second faster), a moderate to large effect on getting up from a chair, and a small effect on overall physical ability. Serious adverse events were rare, but side effects were poorly recorded, so the authors urge caution for clinical groups.
Why it matters to a home lifter: Pooled evidence from 121 trials that resistance training helps older adults with strength and daily tasks such as rising from a chair.
18. The mechanisms of muscle hypertrophy and their application to resistance training (2010)
- Topic: Load, sets, volume and frequency
- Citations: 1,214 in OpenAlex (Semantic Scholar 1,123; Crossref 958; Europe PMC 652), read 31 Oct 2026
- Study type: Narrative review. Who: Not applicable (review). Size: Not applicable (review).
A review of what drives muscle growth from lifting. It contrasts bodybuilders, who tend to use moderate loads and short rests that create high metabolic stress, with powerlifters, who use heavy loads and long rests, and notes that it was not clear which approach builds more muscle. It describes mechanical tension, muscle damage and metabolic stress as factors that can each play a role, and draws conclusions about protocols for maximizing growth. It is a narrative review, not a trial or a meta-analysis.
Why it matters to a home lifter: Offers a heavily cited framework, tension, muscle damage and metabolic stress, for thinking about how different lifting styles build muscle.
19. Resistance Exercise Training in Individuals With and Without Cardiovascular Disease: 2023 Update: A Scientific Statement From the American Heart Association (2023)
- Topic: Official guidance: how much and how to lift
- Citations: Ranked by its most cited version, the 2007 statement: 1,211 in OpenAlex (Semantic Scholar 1,534; Crossref 955; Europe PMC 689). The 2023 update itself: 290 in OpenAlex (Semantic Scholar 216; Crossref 291; Europe PMC 224). Counts read 31 Oct 2026
- Study type: Scientific statement (review written for clinicians). Who: Adults with and without cardiovascular disease. Size: Not applicable (review).
The American Heart Association's update of its 2007 statement on resistance training. It says evidence since 2007 suggests resistance training is a safe and effective way to improve heart health in adults with and without heart disease. It summarizes the benefits of resistance training alone or with aerobic exercise for heart disease risk factors, covers its use in healthy and clinical groups, and notes that less than one-third of US adults report the recommended 2 days a week of resistance training. It reports no new data.
Why it matters to a home lifter: A major heart organization treats resistance training as part of heart health, names 2 days a week as the recommended amount, and offers practical ways to start.
Earlier versions counted here: Resistance exercise in individuals with and without cardiovascular disease: 2007 update (Williams MA et al.), 1,211 OpenAlex citations, the version this entry is ranked by (DOI 10.1161/circulationaha.107.185214 | PubMed 17638929), and Resistance Exercise in Individuals With and Without Cardiovascular Disease (2000), 1,054 OpenAlex citations.
What the earlier statement said: prescribed, supervised resistance training improves strength, endurance, function, independence and quality of life, and reduces disability, in people with and without heart disease.
20. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults (2018)
- Topic: Protein with lifting
- Citations: 1,148 in OpenAlex (Semantic Scholar 988; Crossref 1,009; Europe PMC 802), read 31 Oct 2026
- Study type: Systematic review, meta-analysis and meta-regression of randomized trials. Who: Healthy adults. Size: 49 studies, 1,863 participants.
A systematic review and meta-analysis of 49 randomized trials (1,863 healthy adults) that combined at least 6 weeks of resistance training with protein supplements. Supplements added a modest amount on average: about 2.49 kg more one-rep max strength and 0.30 kg more fat-free mass. The effect was smaller with older age and larger in trained lifters. Beyond a total intake of 1.62 g of protein per kg of body weight per day, extra protein brought no further gain in fat-free mass.
Why it matters to a home lifter: Protein adds a modest boost to lifting; the abstract puts the point of no further benefit at about 1.62 g per kg of body weight a day.
Correction: in 2020 the journal published a correction adding a declaration that co-author Brad Schoenfeld served on the advisory board of Dymatize Nutrition, a maker of sports supplements, while the paper was being written, and that he still served on it in 2020. The correction changes no results. (Correction, PubMed 32943392)
21. Muscular adaptations in response to three different resistance-training regimens: specificity of repetition maximum training zones (2002)
- Topic: Load, sets, volume and frequency
- Citations: 1,066 in OpenAlex (Semantic Scholar 1,132; Crossref 713; Europe PMC 576), read 31 Oct 2026
- Study type: Controlled training study (groups compared with a non-training control; the abstract does not say groups were randomized). Who: Untrained young men (mean age 22.5). Size: 32.
An 8-week study in 32 untrained young men split into low reps (3 to 5), middle reps (9 to 11), high reps (20 to 28) or no training, using leg press, squat and knee extension. One-rep max rose most in the low-rep group, while reps at 60 percent of max improved most in the high-rep group. Muscle fibers grew in the low and middle groups but not significantly in the high-rep group. Groups were small (5 to 11 men), training was short, and sets and rest also differed by group.
Why it matters to a home lifter: Supports the idea that rep range, with its matching sets and rest, shapes results: heavier sets for maximal strength, lighter sets for muscular endurance, at least for beginners over a short program.
22. Effects of high-intensity strength training on multiple risk factors for osteoporotic fractures. A randomized controlled trial (1994)
- Topic: Bone, blood pressure and mood
- Citations: 967 in OpenAlex (Semantic Scholar 988; Crossref 935; Europe PMC 546), read 31 Oct 2026. A second OpenAlex record, without the PubMed ID, shows 181.
- Study type: Randomized controlled trial (1 year). Who: Sedentary, estrogen-deplete postmenopausal white women aged 50 to 70. Size: 40 (39 completed).
A 1-year randomized controlled trial in 40 sedentary, estrogen-deplete postmenopausal women aged 50 to 70 (39 finished). Twenty did high-intensity strength training 2 days a week with five exercises, and 19 were untreated controls. Hip (femoral neck) and spine bone density rose 0.9 and 1.0 percent in trained women and fell 2.5 and 1.8 percent in controls. Muscle mass, strength and balance improved with training and declined in controls. The trial was small, included only white women, and measured bone density, not fractures.
Why it matters to a home lifter: In a small trial, two strength sessions a week helped preserve bone density in women after menopause.
23. Strength and Hypertrophy Adaptations Between Low- vs. High-Load Resistance Training: A Systematic Review and Meta-analysis (2017)
- Topic: Load, sets, volume and frequency
- Citations: 851 in OpenAlex (Semantic Scholar 701; Crossref 731; Europe PMC 525), read 31 Oct 2026
- Study type: Systematic review and meta-analysis. Who: Participants with no known medical conditions or injuries limiting training. Size: 21 studies.
A systematic review and meta-analysis of 21 studies comparing low-load training (60 percent of one-rep max or less) with high-load training (above 60 percent), in programs of at least 6 weeks where every set was taken to momentary muscular failure, in people without conditions that limit training. One-rep max strength improved more with heavy loads, isometric strength did not differ, and muscle growth was similar. The findings apply to sets taken to failure, which is how the included studies trained.
Why it matters to a home lifter: In these studies, lighter weights taken to failure built similar muscle, while heavier weights did more for one-rep max strength.
24. Effects of resistance exercise combined with moderate vascular occlusion on muscular function in humans (2000)
- Topic: Load, sets, volume and frequency
- Citations: 849 in OpenAlex (Crossref 641; Europe PMC 494), read 31 Oct 2026; Semantic Scholar did not answer that day
- Study type: A laboratory test, then a 16-week training study comparing light loads with a cuff, light loads alone and heavier loads (the abstract does not say how people were assigned). Who: Men in the laboratory part; older women in the training part. Size: 5 men and 24 older women.
In a laboratory test with five men, light elbow curls with a cuff on the upper arm raised muscle activity and blood lactate as cuff pressure rose, which did not happen with heavy curls. Then 24 older women trained their elbow flexors for 16 weeks: light loads with a cuff at about 110 mmHg, light loads alone, or heavier loads of about 80 to 50 percent of one-rep max. The cuff group gained more muscle size and strength than the light group and about as much as the heavier group.
Why it matters to a home lifter: The best known early paper behind blood flow restriction training: light loads with a cuff matched heavier loads in a small group. It tested only the elbow flexors, so it does not show the method works for every lift or is safe without guidance.
25. Interference of strength development by simultaneously training for strength and endurance (1980)
- Topic: Load, sets, volume and frequency
- Citations: 753 in OpenAlex (Semantic Scholar 716; Crossref 522; Europe PMC 404), read 31 Oct 2026
- Study type: Training study comparing three groups (the abstract does not say how people were assigned). Who: Not described in the abstract. Size: Not given in the abstract.
A 10-week study of three training groups: strength only (30 to 40 minutes a day, 5 days a week), endurance only (40 minutes a day, 6 days a week), and both programs together. Leg strength in the combined group rose as fast as in the strength group for the first 7 weeks, then leveled off and fell in weeks 9 and 10, while the strength group kept gaining. Aerobic capacity rose about 25 percent on a bike and 20 percent on a treadmill in both groups that did endurance work. The abstract gives no group sizes.
Why it matters to a home lifter: An early, often cited source for the interference effect: adding a full endurance program to a strength program held back strength gains. The combined group did both full programs every week, so it does not show that a little cardio harms strength.
Just outside the list
Some eligible papers that ranked below the slot cut-off in their topic, with OpenAlex counts read 31 Oct 2026. Several have more citations than entries in other topics. The list is not complete.
- Longitudinal study of muscle strength, quality, and adipose tissue infiltration (2009), Strength as a health marker: 1,443
- Muscle mass, muscle strength, and muscle fat infiltration as predictors of incident mobility limitations in well-functioning older persons (2005), Strength as a health marker: 1,401
- Objectively measured physical capability levels and mortality: systematic review and meta-analysis (2010), Strength as a health marker: 1,165
- Longitudinal muscle strength changes in older adults: influence of muscle mass, physical activity, and health (2001), Strength as a health marker: 924
- Skeletal muscle strength as a predictor of all-cause mortality in healthy men (2002), Strength as a health marker: 843
- Protein supplementation augments the adaptive response of skeletal muscle to resistance-type exercise training: a meta-analysis (2012), Protein with lifting: 827
- Association between muscular strength and mortality in men: prospective cohort study (2008), Strength as a health marker: 813
- Resistance exercise for muscular strength in older adults: a meta-analysis (2010), Lifting in older age: 802
- Skeletal muscle adaptations during early phase of heavy-resistance training in men and women (1994), How strength is gained: 796
- Resistance training is medicine: effects of strength training on health (2012), Bone, blood pressure and mood: 777
- Resistance training and executive functions: a 12-month randomized controlled trial (2010), Bone, blood pressure and mood: 775
- Associations of grip strength with cardiovascular, respiratory, and cancer outcomes and all cause mortality: prospective cohort study of half a million UK Biobank participants (2018), Strength as a health marker: 772
- Effects of resistance training on older adults (2004), Lifting in older age: 764
- Dose-Response Relationships of Resistance Training in Healthy Old Adults: A Systematic Review and Meta-Analysis (2015), Lifting in older age: 737
- Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis (2017), Load, sets, volume and frequency: 670
- A meta-analysis to determine the dose response for strength development (2003), Load, sets, volume and frequency: 666
- Resistance exercise load does not determine training-mediated hypertrophic gains in young men (2012), Load, sets, volume and frequency: 627
- The influence of frequency, intensity, volume and mode of strength training on whole muscle cross-sectional area in humans (2007), Load, sets, volume and frequency: 583
- Progressive resistance exercise and resting blood pressure : A meta-analysis of randomized controlled trials (2000), Bone, blood pressure and mood: 554
- Association of Efficacy of Resistance Exercise Training With Depressive Symptoms: Meta-analysis and Meta-regression Analysis of Randomized Clinical Trials (2018), Bone, blood pressure and mood: 498
- Effect of Resistance Training Frequency on Gains in Muscular Strength: A Systematic Review and Meta-Analysis (2018), Load, sets, volume and frequency: 365
- Variability in muscle size and strength gain after unilateral resistance training (2005), How strength is gained: 354 (plus 7 on a duplicate record)
- Effects of Resistance Training Frequency on Measures of Muscle Hypertrophy: A Systematic Review and Meta-Analysis (2016), Load, sets, volume and frequency: 308
- Single vs. multiple sets of resistance exercise for muscle hypertrophy: a meta-analysis (2010), Load, sets, volume and frequency: 276
- Muscle-strengthening activities are associated with lower risk and mortality in major non-communicable diseases: a systematic review and meta-analysis of cohort studies (2022), Strength as a health marker: 265
Famous papers we left out, and why
Several of the most cited papers that mention muscle strength are about something else, or fall under one of the rules above. They are not on the list:
- Frailty in Older Adults: Evidence for a Phenotype (2001), 24,871 citations: defines frailty; grip strength is one criterion, training is not studied.
- Sarcopenia: revised European consensus on definition and diagnosis (2018), 13,818 citations: defines and diagnoses sarcopenia, a medical condition.
- World Health Organization 2020 guidelines on physical activity and sedentary behaviour (2020), 11,641 citations: covers all physical activity and sitting time; muscle strengthening is one part.
- Sarcopenia: European consensus on definition and diagnosis (2010), 11,601 citations: earlier sarcopenia definition.
- The Physical Activity Guidelines for Americans (2018), 9,751 citations: covers all physical activity; muscle strengthening is one part.
- Physical Activity and Public Health (2007), 6,545 citations: covers all physical activity; muscle strengthening is one part.
- Exercise and Physical Activity for Older Adults (2009), 5,153 citations: covers all exercise for older adults.
- Age-associated changes in skeletal muscles and their effect on mobility: an operational diagnosis of sarcopenia (2003), 1,946 citations: proposes a way to diagnose sarcopenia, a medical condition.
- Invited review: Aging and sarcopenia (2003), 1,764 citations: reviews sarcopenia as a condition, covering what it is, its causes, how common it is and its link to disability.
- Exercise Training for Blood Pressure: A Systematic Review and Meta-analysis (2013), 1,682 citations: exercise training in general (four types), not resistance training, is the subject.
- The Effects of Supraphysiologic Doses of Testosterone on Muscle Size and Strength in Normal Men (1996), 1,658 citations: a drug (testosterone) trial.
- Sarcopenia, dynapenia, and the impact of advancing age on human skeletal muscle size and strength; a quantitative review (2012), 1,374 citations: reviews sarcopenia, including its causes, alongside how fast muscle size and strength decline with age, so it falls under the same rule as Invited review: Aging and sarcopenia (2003).
- Mixed muscle protein synthesis and breakdown after resistance exercise in humans (1997), 1,132 citations: a single-session laboratory study of muscle protein synthesis and breakdown in 8 people, not a training study.
- Exercise for preventing and treating osteoporosis in postmenopausal women (2011), 1,090 citations: exercise in general, not resistance training, is the subject.
- Youth resistance training: updated position statement paper from the national strength and conditioning association (2009), 1,074 citations: guidance for children and adolescents; this list covers adults and older adults.
- Physical Activity and Bone Health (2004), 1,043 citations: physical activity in general is the subject, and PubMed holds no abstract.
- Ingestion of whey hydrolysate, casein, or soy protein isolate: effects on mixed muscle protein synthesis at rest and following resistance exercise in young men (2009), 997 citations: a single-session comparison of muscle protein synthesis after whey, casein or soy, not a training study.
- Ingested protein dose response of muscle and albumin protein synthesis after resistance exercise in young men (2009), 972 citations: a single-session study of protein dose and muscle protein synthesis in 6 young men, not a training study.
- Compatibility of high-intensity strength and endurance training on hormonal and skeletal muscle adaptations (1995), 777 citations: a later study of combined strength and endurance training; each topic keeps one paper per question, and Hickson 1980, which first reported the effect, holds that place.
- Position statement on youth resistance training: the 2014 International Consensus (2013), 589 citations: guidance for children and adolescents; this list covers adults and older adults.
- Muscular strength in male adolescents and premature death: cohort study of one million participants (2012), 554 citations: strength was measured in adolescent boys, and this list covers adults and older adults.
- High-Intensity Resistance and Impact Training Improves Bone Mineral Density and Physical Function in Postmenopausal Women With Osteopenia and Osteoporosis: The LIFTMOR Randomized Controlled Trial (2017), 457 citations: limited to women with low bone mass (osteopenia or osteoporosis).
How citation counts work, and why they are not a quality score
A citation count is the number of later papers that list a paper in their references. Each database finds a different set of citing papers, so counts differ: the ACSM 2011 stand shows 9,314 citations in OpenAlex, 8,476 in Semantic Scholar, 7,850 in Crossref and 5,811 in Europe PMC on the same day. Databases sometimes split one paper across two records, as with Fiatarone's 1990 study. Older papers have had more years to collect citations, and guidelines and reviews are cited more often than single trials. A paper can also be cited by authors who disagree with it. A high count means a paper is widely discussed, not that its methods are strong or its findings settled: several studies here had 10 to 15 participants and no control group described in the abstract.
Abstracts and study records come from PubMed. Courtesy of the U.S. National Library of Medicine. The weekly digest of new studies is on the research page. If a number here looks wrong, email support@basaltfitness.com; corrections are logged in our editorial policy.