The effects of high repetition, lower resistance strength training alongside protein supplementation on mobility, muscle mass and strength over a 12-week period in obese and overweight older adults

As obesity and aging rates rise, many older adults suffer from sarcopenic obesity, characterized by muscle loss and increased body fat, leading to reduced independence and higher health risks. The study’s primary goal is to assess the effectiveness of a high-repetition, low-resistance strength training regimen in increasing muscle strength, mass, and functional mobility in older adults with sarcopenic obesity.

This protocol, chosen for its safety and reduced injury risk, uses lighter weights to ensure accessibility and relevance to daily activities. Sixty participants aged 60-85 years (BMI 25-40 kg/m²), and in good health will be recruited. The protocol consists of a 12-week exercise program, performing high-repetition, low-resistance exercises while consuming 50 grams of a protein supplement daily. Baseline and post-intervention assessments will measure muscular strength, mobility, and body composition using DXA, BIA, and ultrasound. Expected outcomes include significant improvements in muscle mass, strength, and mobility, enhancing participants’ independence and quality of life.

The study aims to equip healthcare professionals with evidence-based protocols to manage sarcopenic obesity effectively, benefiting the global aging population. Aligned with the McMaster Institute for Research on Aging’s (MIRA) goals, this study will provide valuable insights for clinical applications and community health initiatives, supporting healthier, longer lives for older adults.