Study of 141 Older Adults Finds Extra Protein Fails to Boost Muscle Strength
Updated
Updated · Futurity: Research News · May 20
Study of 141 Older Adults Finds Extra Protein Fails to Boost Muscle Strength
1 articles · Updated · Futurity: Research News · May 20
Twenty-four weeks of whey supplementation did not improve strength in 141 adults aged 65 and older, and adding potassium bicarbonate made no difference.
The trial targeted healthy, well-nourished older adults already meeting recommended protein intake, testing whether protein alone could slow age-related muscle decline.
Researchers saw biological signs consistent with muscle building—including higher IGF-1 and greater acid excretion—but those changes did not translate into better leg press or balance results.
Lisa Ceglia said the findings suggest exercise, especially resistance training, remains the most reliable way for older adults to preserve strength, while protein supplements may still help malnourished patients or people starting new exercise programs.
If protein powder fails, what is the true formula for rebuilding muscle after age 65?
Is the fitness industry misleading seniors about protein supplements for building strength?
Beyond protein, what overlooked nutrients are key to fighting age-related muscle loss?
Resistance Training, Not Protein Alone, Is Key to Combating Age-Related Muscle Loss: Evidence-Based Strategies for Muscle Strength and Sarcopenia Prevention
Overview
Recent research shows that simply increasing protein intake is not enough to improve muscle strength, especially in healthy older adults. Protein is important, but its benefits are much greater when combined with physical activity, particularly resistance training. Studies have found that adding protein supplements to resistance exercise does not lead to better results than exercise alone. This means that relying only on protein, without a strong exercise routine, will not give the best outcomes for muscle strength and mass. Resistance training remains the key factor for building and maintaining muscle as we age.