Scientists Discover Optimal Nutrition and Workout Combination for Older Adult Muscle Strength

Strong muscles may be one of the most powerful tools for healthy aging, and researchers say the right combination of exercise and protein can make a major difference. A large new meta-analysis has found that older adults who combine resistance training with whey protein supplementation gain more muscle mass, strength, and mobility than those using other protein and exercise strategies.

The study, published in Nutrients, analyzed data from 235 clinical trials involving nearly 21,000 adults between the ages of 50 and 89. Researchers from Taipei Medical University and the University of Washington compared different protein sources and exercise programs to see which combinations best supported healthy aging.

The standout result was whey protein paired with resistance training. This combination produced the greatest improvements in muscle mass and leg strength. Meanwhile, whey protein combined with multicomponent exercise programs — routines mixing strength, balance, and aerobic training — showed the strongest benefits for mobility, walking speed, and balance.

Experts say whey protein may be especially effective because it contains high levels of leucine, an amino acid essential for triggering muscle protein synthesis.

Resistance training also plays a critical role. Exercises using weights, resistance bands, or body weight create small stresses in muscle fibers, prompting the body to rebuild stronger tissue afterward. Researchers say this process becomes increasingly important with age because adults naturally begin losing muscle mass after their 30s, with muscle decline accelerating after age 65.

The findings highlight a practical strategy for preserving independence later in life. Stronger muscles improve balance, walking ability, and everyday tasks such as climbing stairs or carrying groceries, while also lowering the risk of falls and injuries.

Experts recommend older adults aim for regular strength training several times per week while ensuring adequate protein intake through foods like dairy, fish, eggs, beans, nuts, and protein-rich supplements when needed.

REFERENCE: Lin, C.-L.; Huang, S.-W.; Chen, H.-C.; Huang, M.-H.; Liou, T.-H.; Liao, C.-D. Explore the Optimal Treatment Regimen Across Combinations of Variate Protein Sources and Exercise Modalities and Its Associated Factors in Older Adults: A Network Meta-Analysis and Meta-Regression of Randomized Controlled Trials. Nutrients 2026, 18, 1409. https://doi.org/10.3390/nu18091409