Strength & muscle
Only the group that lifted weights kept its diabetes-risk gain a year after the diet ended
221 women dieted to a healthy BMI, then regained about a third of it. Predicted heart and diabetes risk fell and then bounced back in every group but one: the arm that had added resistance training held on to its diabetes benefit.
Aug 31, 2026
Combining cardio and weights lowered deaths by 60% in coronary heart disease trials
Cardiac rehabilitation has long meant a treadmill. A Sports Medicine Open meta-analysis of randomized trials found adding resistance training beat aerobic exercise alone on fitness and quality of life, and cut mortality against usual care.
Aug 26, 2026
Exercise for muscle loss peaked near 690 MET-minutes a week, then the benefit fell away
A Geriatric Nursing network meta-analysis of 29 randomized trials modeled dose curves for sarcopenia. Grip strength and walking both improved from 140 MET-minutes, both turned over at the top, and each preferred a different exercise.
Aug 26, 2026
Light weights with a blood flow cuff matched heavy lifting for strength in 45 rehab trials
A British Journal of Sports Medicine review pooled 45 trials and 1,652 people in musculoskeletal rehab. Low-load exercise with a blood flow cuff beat low-load exercise alone for strength, and drew level with heavy lifting.
Aug 25, 2026
The exercise that protects muscle depends on your frailty
Following 10,871 Canadians for six years, gentle activity tracked with less muscle loss in frailer adults, while only strenuous activity did so in robust ones.
Aug 6, 2026
Intervals ranked best for belly fat, but more was not better
Pooling 60 trials in 3,308 adults, researchers ranked four kinds of exercise against the fat packed around the organs. Intervals came top, and the dose-response curve turned back on itself past a moderate weekly load.
Aug 4, 2026
Light weights to failure grew more muscle than heavy ones
A 201-person trial in Medicine & Science in Sports & Exercise had untrained adults lift heavy or light until they could not manage another repetition. The light group gained slightly more muscle, about a millimeter of extra thickness.
Aug 1, 2026
Fast lifting built power in older adults, but not for everyone
A GeroScience trial put 36 middle-aged and older adults through 12 weeks of deliberately fast lifting. The gains came from force, and the speed gains went only to the slowest.
Aug 1, 2026
Weight training eased depression. So did the fake version.
A trial in young anxious women compared real resistance training against a deliberately feeble sham. Both produced large improvements, and the gap between them never became clear.
Aug 1, 2026
Atrial fibrillation sped up muscle loss over 12 years
A Swedish study of 2,048 older adults found people with the common heart rhythm disorder lost strength faster, and lost it fastest when inflammation markers were high.
Jul 31, 2026
Resistance training in midlife tied to 42% less diabetes
A JAMA Network Open study of 143,715 US health professionals found people who kept up resistance training from 40 to 60 had 42% lower type 2 diabetes risk than those who did almost none.
Jul 26, 2026
Exercise kept older muscle young at the molecular level
A Nature Aging study of muscle samples from young and older adults found that half the molecular differences normally caused by age were simply absent in older people who had trained for years.
Jul 25, 2026
Strength training's longevity sweet spot: two hours a week
Research in the British Journal of Sports Medicine tracked 147,374 people for up to 30 years. About 90 to 120 minutes of strength training a week lined up with the lowest risk of death, and more added nothing. A link, not proof.
Jul 22, 2026
Grip strength and chair stands tracked with longer life
In 5,472 women aged 63 to 99, two simple measures - grip strength and how fast they rose from a chair - tracked with living longer over eight years, even after accounting for exercise. It shows a link, not proof.
Jul 21, 2026
HIIT cut fat and held muscle in older adults, but barely
In a six-month trial of more than 120 healthy older adults, high-intensity interval training cut fat while holding onto muscle, unlike moderate exercise. The authors say the differences between intensities were small.
Jul 17, 2026