Training

1. Trainingwell supported · human dataAdded 4 October 2026

   Lifting weights shifts a cellular health marker in over-60s

   Pooled results from seven randomised trials in 344 adults aged 60 and over found that resistance training programmes of at least eight weeks increased bioelectrical phase angle by 0.52 degrees, a marker of cellular health read from body composition devices.

   ⚠What it shows: A consistent finding on a thin base: pooled from just seven trials with 344 older adults in total. The authors say more rigorous studies are still needed to work out which equipment and protocols get the most out of the effect.Meta-analysis · Rev Endocr Metab Disord

   Full breakdown →Sarcopenia explained →Phenotypic Age Calculator →Effect of resistance training on bioelectrical phase angle in older adults: a systematic review with Meta-analysis of randomized controlled trials. Rev Endocr Metab Disord 2023
2. Trainingwell supported · human dataAdded 3 October 2026

   Lifting weights can soften stiff arteries in type 2 diabetes

   Pooled results from randomised trials in adults with type 2 diabetes show resistance-based exercise programmes reduced arterial stiffness and improved endothelial function compared with no exercise, with the most consistent benefits when weights were combined with aerobic training. Wave reflection measures did not change significantly.

   ⚠What it shows: Reasonably trustworthy: results pooled from trials where people were assigned at random, with the stiffness and vessel-lining benefits rated moderate certainty. Most programmes mixed weights with aerobic work, so the evidence for lifting on its own is thinner, and not every vascular measure improved.Meta-analysis · Front Endocrinol (Lausanne)

   Full breakdown →Heart Age Calculator →Does resistance training alone or in combination with aerobic training improve vascular function indices in adults with type 2 diabetes? A systematic review and meta-analysis of randomized controlled trials. Front Endocrinol (Lausanne) 2026
3. Trainingpreliminary · human dataAdded 29 September 2026

   Exercise beat standard care for bone density in osteoporosis

   Pooled results from 20 randomised trials in 1824 people with primary osteoporosis found exercise therapy improved lumbar spine and femoral neck bone density and eased pain more than conventional treatment. The authors grade the underlying evidence as low quality.

   ⚠What it shows: Take the direction seriously and the size loosely: results pooled from 20 trials in 1824 people favoured exercise for bone density and pain, but the authors rate the evidence as low quality and the trials disagreed with each other a lot.Meta-analysis · Orthop Surg

   Full breakdown →Bone density explained →Exercise vs Conventional Treatment for Treatment of Primary Osteoporosis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Orthop Surg 2021
4. Trainingwell supported · human dataAdded 29 September 2026

   Cardio first or weights first? For type 2 diabetes it barely matters

   Across 27 randomised trials in 965 people with type 2 diabetes, combined aerobic and resistance training improved body fat, HbA1c, fasting glucose and blood lipids whether cardio or weights came first. Direct comparisons between the two orders were not significant, so neither sequence can be declared superior.

   ⚠What it shows: The case for combining cardio and weights is solid here, pooled from 27 trials in 965 people with type 2 diabetes; the ordering question is not. Head-to-head comparisons between the two sequences were uncertain and rated low certainty, so the rankings are hints rather than verdicts.Meta-analysis · Endocrine

   Full breakdown →Insulin sensitivity explained →Metabolic Fitness Index →Effects of concurrent training sequence on cardiometabolic risk factors in patients with type 2 diabetes: a systematic review and network meta-analysis. Endocrine 2026
5. Trainingpreliminary · human dataAdded 17 September 2026

   Blood flow cuffs made walking build extra muscle and fitness

   Pooled results from twelve randomised trials show that adding blood flow restriction cuffs to low or moderate intensity walking produced small to moderate extra gains in cardiovascular fitness, leg strength, muscle size and functional performance compared with identical walking without cuffs.

   ⚠What it shows: Promising but shaky: results pooled from twelve trials, and cuffed walking beat plain walking on every outcome measured. The authors rate the underlying studies as low to very low quality with a high risk of bias, so the size of these gains deserves caution.Review · J Sports Sci

   Full breakdown →Hypertrophy explained →VO2max Calculator →Effect of blood flow restricted walking on cardiovascular fitness, muscular development, and functional performance in adults: A systematic review with meta-analysis. J Sports Sci 2026
6. Trainingwell supported · human dataAdded 16 September 2026

   Resistance training lifts quality of life in over-50s with osteoporosis

   Pooled results from 18 trials in 1,591 adults aged 50 and over with osteoporosis linked exercise, especially resistance training, to better health-related quality of life across both physical and mental domains. Programmes shorter than 20 weeks produced the most consistent benefits.

   ⚠What it shows: Promising with a wrinkle: pooled results from 18 trials in 1,591 older adults, and the clearest gains came from resistance training with moderate-certainty evidence. But when every trial was lumped together across their different questionnaires the overall effect washed out, so the headline benefit rests on smaller comparisons.Meta-analysis · PeerJ

   Full breakdown →Health-related quality of life (HRQoL) explained →Effects of exercise interventions on health-related quality of life in older adults with osteoporosis: a systematic review and meta-analysis. PeerJ 2026
7. Trainingpreliminary · human dataAdded 14 September 2026

   Kicking builds bone: taekwondo linked to denser hips and spines in the young

   Long-term taekwondo participation was linked with higher femoral and lumbar spine bone density in children, adolescents and young adults, and short trials of 8 to 16 weeks raised femoral neck density in children and adolescents by 0.14 g/cm2. Every included study carried a high or serious risk of bias.

   ⚠What it shows: Interesting but fragile: all 18 studies covering 820 people carried a high or serious risk of bias, and much of the long-term evidence compares practitioners with non-practitioners at a single point in time rather than testing training directly. Evidence in middle-aged and older adults is close to nonexistent.Review · Sports Health

   Full breakdown →Bone density explained →Effects of Taekwondo on Bone Mineral Density: A Systematic Review and Meta-analysis of Short-term Interventions and Long-term Participation. Sports Health 2026
8. Trainingwell supported · human dataAdded 14 September 2026

   Lifting ranks first when older adults fight muscle loss and fat together

   Ranking nine strategies across 24 randomised controlled trials in 1,298 older adults with sarcopenic obesity, resistance training came out best for improving handgrip strength and reducing fat mass, while multicomponent training ranked highest for lowering BMI and percentage body fat. No intervention significantly improved skeletal muscle index.

   ⚠What it shows: As strong as this kind of comparison gets: results pooled from 24 trials in 1,298 older adults, ranked against each other in one network. The programmes varied widely and no approach clearly improved the muscle index itself, so the win is on strength and fat, not on rebuilding muscle.Meta-analysis · Front Public Health

   Full breakdown →Sarcopenia explained →Body Fat Calculator →Comparative effectiveness of exercise modalities and nutritional supplementation for sarcopenic obesity in older adults: a network meta-analysis based on randomized controlled trials. Front Public Health 2026
9. Trainingpreliminary · human dataAdded 13 September 2026

   Clenbuterol built extra muscle but no extra fat loss in an 8-week trial

   In a randomised placebo-controlled trial of 32 healthy young adults, 8 weeks of resistance training with daily clenbuterol (80 μg) added 1.7 kg more lean mass and bigger strength gains (+6 kg bench press, +16 kg leg press) than placebo, but fat loss was no greater than placebo. After 16 weeks of detraining the lean mass and bench press advantages had disappeared, and retraining rebuilt muscle no faster in the prior clenbuterol group.

   ⚠What it shows: A rare well-run test of this drug, but it covered just 32 healthy young adults over 8 weeks, so it says nothing about long-term use or safety. The effects were also clearly stronger in the men than the women.Study · Sports Med

   Full breakdown →Hypertrophy explained →One-Rep Max Calculator →Effects of Clenbuterol on Body Composition and Strength Following Resistance Training, Detraining, and Retraining in Healthy Adults: A Randomized Controlled Trial. Sports Med 2026
10. Trainingwell supported · human dataAdded 7 September 2026

    Lifting weights cools one inflammation marker in over-60s, but not the others

    In healthy adults aged 60 and over, resistance training lowered the inflammatory marker C-reactive protein and improved leg strength and six-minute walk performance, according to a pooled analysis of 19 trials with 728 participants. Two other inflammatory markers, TNF-α and IL-6, did not change significantly.

    ⚠What it shows: Fairly trustworthy on the big picture: results pooled from 19 trials in 728 healthy over-60s, all of which assigned people to lifting or a comparison group at random. The catch is that only one of three inflammation markers moved, and the trials used different programmes, so the best way to train for this effect is still unknown.Meta-analysis · Arch Gerontol Geriatr

    Full breakdown →Sarcopenia explained →The influence of resistance training on inflammatory markers, body composition and functional capacity in healthy older adults: A systematic review and meta-analysis. Arch Gerontol Geriatr 2025
11. Trainingwell supported · human dataAdded 7 September 2026

    Bargain elastic bands lowered blood sugar in adults with type 2 diabetes

    Pooled results from 14 randomised trials in 684 adults with type 2 diabetes found elastic-band resistance training lowered HbA1c and fasting glucose with moderate-certainty evidence, and improved handgrip strength. Effects on walking ability, sit-to-stand performance and muscle mass remained uncertain.

    ⚠What it shows: Fairly trustworthy on the blood sugar and grip results: pooled from 14 trials in 684 adults with type 2 diabetes, and the findings held up when any single trial was removed. Side effects were patchily reported, and the walking and muscle-mass results were too inconsistent to lean on.Meta-analysis · Front Public Health

    Full breakdown →Insulin sensitivity explained →Effects of elastic-band resistance training on glycemic control, muscle strength, and functional outcomes in patients with type 2 diabetes mellitus: a systematic review and meta-analysis of randomized controlled trials. Front Public Health 2026
12. Trainingpreliminary · human dataAdded 6 September 2026

    Weight training made older adults with muscle loss and obesity faster on their feet

    Results pooled from six randomised trials in 221 older adults with sarcopenic obesity found resistance training improved Timed Up and Go times by 2.23 seconds and Short Physical Performance Battery scores by 0.93 points, with no serious adverse events reported.

    ⚠What it shows: Promising but not settled: results pooled from just six trials totalling 221 people, and the reviewers themselves rated the certainty of the evidence low to very low. The gains were consistent across trials and attendance was high, which counts for something.Review · J Exerc Sci Fit

    Full breakdown →Sarcopenia explained →Effects of resistance training on balance-related physical performance in older adults with sarcopenic obesity: a systematic review and meta-analysis of randomized controlled trials. J Exerc Sci Fit 2026
13. Trainingpreliminary · human dataAdded 5 September 2026

    Blood flow restriction may damage muscle in week one but not over time

    A systematic review of 15 randomised controlled trials found mixed evidence on whether low-load lifting with blood flow restriction damages muscle: some trials suggest damage may occur within 1 week, longer-term studies found none, and the technique still delivered gains in muscle strength and size.

    ⚠What it shows: Treat this as an open question rather than a verdict: a sweep of all the trials found only 15 in healthy adults, and nearly half of them could not say either way whether the cuffs cause muscle damage. The reviewers themselves call for bigger trials before anyone can be confident.Systematic review · Clin Physiol Funct Imaging

    Full breakdown →DOMS explained →Training Volume Calculator →Effect of blood flow restriction with low-load exercise on muscle damage in healthy adults: A systematic review of randomized controlled trials. Clin Physiol Funct Imaging 2024
14. Trainingpreliminary · human dataAdded 3 September 2026

    Only resistance training moved the needle for muscle loss hidden in obesity

    An umbrella review of meta-analyses in people with sarcopenic obesity found resistance training improved gait speed by 0.14 to 0.17 m/s and lower leg strength by 9.97 kg, while aerobic exercise, mixed exercise and calorie-restricted diets with protein supplementation showed no significant benefit; certainty of evidence was moderate to very low.

    ⚠What it shows: Treat this as a pointer rather than a verdict: it pulls together four earlier reviews whose trials covered between 30 and 225 people, and the authors rate the certainty of the evidence as moderate to very low. Resistance training's edge may partly reflect it being the most studied option.Systematic review · Curr Obes Rep

    Full breakdown →Sarcopenia explained →Strength Standards →Effects of Nutrition and Exercise Interventions on Persons with Sarcopenic Obesity: An Umbrella Review of Meta-Analyses of Randomised Controlled Trials. Curr Obes Rep 2023
15. Trainingpreliminary · human dataAdded 3 September 2026

    Cuffs add nothing to heavy lifting: no extra strength, no extra size

    Pooled evidence from 8 long-term and 34 single-session studies in healthy adults suggests that adding blood flow restriction cuffs to heavy resistance training, meaning loads of at least 60% of maximal strength, does not further improve muscle strength or size compared with conventional heavy training, likely because the physiologic demands are comparable.

    ⚠What it shows: A believable null, but the authors themselves rate the certainty of the pooled evidence as very low: only 8 studies tracked actual strength and size adaptations, all in healthy adults. The single-session findings on effort and repetitions completed also disagreed with each other.Meta-analysis · J Strength Cond Res

    Full breakdown →Hypertrophy explained →One-Rep Max Calculator →Acute and Chronic Effects of High-Load Resistance Training With Blood Flow Restriction in Healthy Adults: A Systematic Review and Meta-Analysis. J Strength Cond Res 2026
16. Trainingwell supported · human dataAdded 1 September 2026

    Lifting weights lowers blood pressure in type 2 diabetes

    In a meta-analysis of 26 randomised trials, resistance training lowered systolic blood pressure by 4.13 mmHg and diastolic by 2.03 mmHg in adults with type 2 diabetes compared with usual care, with larger drops in programmes lasting over 12 weeks; resting heart rate and aerobic capacity also improved modestly.

    ⚠What it shows: A credible pooled result: 26 trials where adults with type 2 diabetes were assigned at random to resistance training or usual care. The trials disagreed with each other on blood pressure and few reported results for women, so the exact size of the drop is uncertain.Meta-analysis · Diabetes Res Clin Pract

    Full breakdown →Strength explained →Heart Age Calculator →The effect of resistance training on blood pressure and resting heart rate in type 2 diabetes: A systematic review and meta-analysis of randomized controlled trials. Diabetes Res Clin Pract 2025
17. Trainingwell supported · human dataAdded 1 September 2026

    Weight training nudges cholesterol down, without touching HDL

    A meta-analysis of 29 randomised trials in 1329 adults found progressive resistance training lowered total cholesterol by 2.7%, LDL cholesterol by 4.6% and triglycerides by 6.4%, but did not meaningfully change HDL cholesterol.

    ⚠What it shows: Solid but modest: results pooled from 29 trials in which 1329 men and women were assigned at random to lift or not. The improvements are real yet small, and the underlying trials all date from before 2008.Meta-analysis · Prev Med

    Full breakdown →ApoB explained →Heart Age Calculator →Impact of progressive resistance training on lipids and lipoproteins in adults: a meta-analysis of randomized controlled trials. Prev Med 2009
18. Trainingwell supported · human dataAdded 31 August 2026

    Exercise pays overweight adults in mood and muscle, not just a smaller waist

    Pooled results from 31 randomised trials in 2779 overweight or obese adults show exercise training improved mental health, eased depression, lifted mood, trimmed waist circumference by an average of 2.77 cm and added 1.16 kg of lean body mass, alongside gains in several quality of life domains.

    ⚠What it shows: Solid footing: results pooled from 31 trials covering 2779 overweight or obese adults, so the direction of these effects is trustworthy. Some psychological, body composition and quality of life measures did not budge, and the authors say the long-term picture still needs confirming.Meta-analysis · Biol Res Nurs

    Full breakdown →Visceral fat explained →Body Fat Calculator →The Impact of Exercise Training on Psychological Outcomes, Body Composition, and Quality of Life in Overweight or Obese Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Biol Res Nurs 2025
19. Trainingwell supported · human dataAdded 30 August 2026

    'Non-responders' to weight training may be a statistical illusion

    Pooling 15 randomised trials of 587 men and women aged 60 and over with overweight or obesity, resistance training of at least eight weeks improved body weight, percent body fat, fat mass, BMI and lean mass, yet the spread of results showed no true differences between individuals in how much they responded.

    ⚠What it shows: Reasonably solid: results pooled from 15 trials in 587 people aged 60 and over who were carrying extra weight, all training for at least eight weeks. It does not prove individual variation is absent, only that the trials' own numbers give no evidence for it once random variation is accounted for.Meta-analysis · Sci Prog

    Full breakdown →Sarcopenia explained →Body Fat Calculator →Effects of resistance training on body weight and body composition in older adults: An inter-individual response difference meta-analysis of randomized controlled trials. Sci Prog 2023
20. Trainingwell supported · human dataAdded 29 August 2026

    Mind-body exercise matched weights for fibromyalgia pain relief

    Pooled data from 21 trials in 1638 people with fibromyalgia, mostly women, found mind-body exercise and resistance training gave the largest reductions in pain, while mind-body exercise also improved six-minute walking distance.

    ⚠What it shows: Useful but loosely stitched: results pooled from 21 trials in 1638 people, mostly women, and the different exercise types were often compared indirectly rather than head to head. Take the rankings as a guide rather than a verdict.Meta-analysis · Pain Res Manag

    Full breakdown →Mind-body therapies explained →Comparison of the Effects of Three Types of Exercise (Aerobic Exercise, Resistance Training, and Mind-Body Exercise) on Fibromyalgia: A Systematic Review and Network Meta-Analysis of Randomized Controlled Trials. Pain Res Manag 2026
21. Trainingwell supported · human dataAdded 28 August 2026

    Lifting after 50 improves how fully the brain switches muscle on

    Pooled results from 27 randomised trials in adults aged 50 and over found that resistance training increased voluntary activation, a measure of how fully the nervous system recruits a muscle, with the clearest signal in the plantar flexors and in healthy participants. Muscle electrical activity during maximal effort and antagonist coactivation did not change.

    ⚠What it shows: Reasonably solid: results pooled from 27 randomised trials in adults aged 50 and over, and the activation finding survived when only the best-quality trials were counted. Most participants were healthy older adults, so it is unclear whether the same holds for people with sarcopenia or age-related frailty.Meta-analysis · Exp Gerontol

    Full breakdown →Sarcopenia explained →Strength Standards →The influence of resistance training on neuromuscular function in middle-aged and older adults: A systematic review and meta-analysis of randomised controlled trials. Exp Gerontol 2021
22. Trainingwell supported · human dataAdded 27 August 2026

    Older lifters gain strength and a growth factor boost, women especially

    Pooled data from 11 randomised trials in healthy older adults found resistance training raised serum IGF-1 by 17.34 ng/ml and improved leg press and bench press strength, though in subgroups the IGF-1 rise was significant only in women.

    ⚠What it shows: Reasonably solid for the strength gains: results pooled from 11 trials in healthy older people, though the hormone finding split oddly, holding up only in women. Why lifting moves IGF-1, and whether a modest rise matters for health, remains unexplained.Meta-analysis · Hormones (Athens)

    Full breakdown →Sarcopenia explained →Strength Standards →Effects of resistance training on muscle strength, insulin-like growth factor-1, and insulin-like growth factor-binding protein-3 in healthy elderly subjects: a systematic review and meta-analysis of randomized controlled trials. Hormones (Athens) 2021
23. Trainingwell supported · human dataAdded 27 August 2026

    Exercise plus nutrition beats either alone for muscle loss paired with obesity

    Across 21 randomised trials in people with sarcopenic obesity, exercise or nutrition alone produced only limited gains, especially for muscle mass, while combining the two improved body fat, muscle mass, grip strength and walking speed together.

    ⚠What it shows: A dependable summary of a thin field: results pooled from 21 trials where people were assigned at random, in older adults carrying both low muscle and excess fat. Most individual improvements were small, and the trials mixed different programmes and durations, so the best specific recipe is still unclear.Meta-analysis · Age Ageing

    Full breakdown →Sarcopenia explained →Protein Intake Calculator →Non-pharmacological treatment strategies for anthropometric, physical capacity and physiological indicators among sarcopenic obesity patients: a systematic review of rigorous randomized controlled trials. Age Ageing 2024
24. Trainingwell supported · human dataAdded 25 August 2026

    Daily protein plus lifting shifts the biology of age-related muscle loss

    A systematic review of seven randomised trials in 260 older adults found that resistance training three times a week, combined with at least 15 g of daily protein mostly from dairy, reduced blood markers that drive muscle loss and raised those that build it, alongside gains in strength, fat-free mass and muscle fibre size.

    ⚠What it shows: Promising but thin: a sweep of all the studies turned up just seven trials with 260 older adults between them, and they varied in length and design. The direction is consistent; the ideal amount of protein or training is not settled here.Systematic review · Biomolecules

    Full breakdown →Sarcopenia explained →Protein Intake Calculator →Synergistic Effects of Protein Intake and Exercise on Biomarkers of Sarcopenia: A Systematic Review. Biomolecules 2026

Back to the full archive · this week’s studies