Exercise plus nutrition ranked best for muscle in 57 trials of older adults with sarcopenia

What the study did

Sarcopenia is the age-related loss of muscle mass, strength and function. Researchers searched four major databases through August 2026 for randomized controlled trials in older adults with sarcopenia or pre-sarcopenia that compared exercise, nutrition or both against a control group. They pooled 65 reports from 57 trials involving 6,017 participants.

A network meta-analysis lets researchers compare several strategies at once, even when not every pair was tested head to head. Here the four groups were control, exercise, nutrition and combined exercise plus nutrition.

What it found

All three active approaches improved handgrip strength compared with control. The combined approach ranked highest, with an average gain of 4.29 kg (95% CI 2.50 to 6.07). Exercise improved the Timed Up and Go mobility test by about 1.19 seconds (95% CI 0.72 to 1.66) and ranked highly for gait speed, with a gain of 0.11 m/s (95% CI 0.06 to 0.17).

For appendicular skeletal muscle mass index, a measure of limb muscle relative to height, all three active approaches helped, and the combined approach ranked highest with a gain of 0.32 kg/m² (95% CI 0.17 to 0.48).

What it does not prove

The authors rated the overall certainty of evidence as limited. The included trials varied widely in the type, intensity and length of exercise and in the nutritional approach used, so the analysis cannot point to one best program. It did not test effects on falls, fractures, disability or survival, and rankings in a network meta-analysis are estimates, not proof that one strategy beats another.

Most trials were short, and the analysis does not show whether these gains last once a program ends. The nutrition arms also differed, ranging from protein to other supplements, so it cannot say which nutritional approach matters most.

The Youthful take

Muscle is a longevity organ. These findings fit what we see in practice: regular, structured strength and mobility work, supported by adequate overall nutrition, gives older adults the best chance of keeping strength and function. The right program depends on each person’s health, so it is worth building one with a physician, physical therapist or qualified trainer, especially when sarcopenia or frailty is already present.