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February 8, 2026
The importance of protein for physical activity
Research over the last 10 to 15 years clearly indicates that athletes and physically active people need more protein than sedentary individuals. Athletes engaged in intense training may need to consume up to twice as much protein as sedentary individuals. A recent comprehensive review published in The Physician and Sportsmedicine can help health care professionals properly educate athletes on the role of protein in exercise and recovery based on current science. The conclusions of this review are consistent with current evidence-based position statements.
Studies show that protein quality and the timing of ingestion matters. The type of protein consumed determines the availability of amino acids needed to repair tissue, promote growth and synthesize enzymes, hormones and cells. Complete proteins from animal sources containing all of the essential amino acids generally rank higher in quality. Research indicates it is important for athletes to ingest protein with carbohydrate prior to, during, and/or following exercise to replenish amino acids used during exercise and to optimize training adaptations. A strategically planned protein intake timed around physical activity is integral for preserving or building muscle mass, to ensure proper recovery and may also help to sustain optimal immune function.
For Your Practice
A daily protein of intake of 1.2 to 2 grams per kilogram of body mass is generally recommended to meet the body�s requirements and allow for optimal training adaptations for most physically active individuals and athletes. As part of a balanced, nutrient-rich diet, protein intake at this level is safe for both kidney function and bone metabolism in healthy active individuals.
Want to Learn More?
Read the abstract Protein for exercise and recovery by Kreider RB and Campbell B, Phys Sportsmed, 2009; 37(2):13-21.
Position of the American Dietetic Association, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and athletic performance by Rodriguez NR, DiMarco NM, Langley S; American Dietetic Association; Dietitians of Canada; American College of Sports Medicine. J Am Diet Assoc, 2009; 109(3):509-27.
International Society of Sports Nutrition position stand: protein and exercise by Campbell B, Kreider RB et al.
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