Post-Workout Milk Boosts Bone Density, Muscle Function in Seniors, Study Finds

Drinking milk immediately after exercise may help older adults maintain bone density and improve physical function, according to a new study. The research found that consuming milk after resistance training produced greater improvements in muscle function compared to soy milk.

The study, recently published in the Journal of Nutrition, Health and Aging, involved Chinese researchers conducting an eight-week program with 82 healthy adults aged 60 and older. Participants performed strength and balance exercises three times weekly. Results showed notable improvements in muscle strength and mobility among those who consumed milk immediately after workouts.

Participants were divided into four groups: exercise only, exercise with nutrition education, exercise and nutrition education plus milk consumption, and exercise and nutrition education plus soy milk consumption.

The milk group consumed 240ml of low-fat milk within 30 minutes to one hour after exercise. The soy milk group consumed a similar amount of protein, approximately 7-8 grams. All supplementation groups also received sweet potatoes for carbohydrate intake.

After eight weeks, walking speed improved significantly across all groups, confirming that regular exercise effectively enhances mobility and physical performance. Even the exercise-only group without dietary changes showed marked improvement in grip strength and chair-rise ability.

The milk consumption group demonstrated simultaneous improvements across multiple physical performance indicators, including grip strength, six-meter walking speed, and five-repetition chair stand time.

Differences in bone health markers were also notable between groups. While the exercise-only group showed decreased bone density in some areas, the milk consumption group showed a tendency toward improved bone density T-scores. This suggests that combining exercise with protein supplementation may slow bone loss.

However, muscle mass gains were not statistically significant, which researchers attributed to the relatively short eight-week duration and limited sample size of the quasi-experimental design. The research team noted that large-scale randomized clinical trials are needed to verify long-term bone density changes and causality.

The researchers added that the simple habit of consuming protein-containing foods immediately after exercise may help older adults maintain physical function.