Effects of Different Volumes of Resistance Training

This study explores the effects of varying volumes of resistance training on body composition, strength, peak power, and muscle thickness in untrained women over eight weeks. A randomized controlled trial involving 45 female college students assessed the outcomes across three groups: low-volume training (LVT) with three weekly sessions, moderate-volume training (MVT) with four weekly sessions, and high-volume training (HVT) with five weekly sessions. Participants were untrained, aged 18-65, and free from cardiovascular diseases or performance-enhancing drugs. The hypothesis suggested that moderate volume training would yield optimal muscle development, considering the potential non-linear dose-response relationship where excessive training might be detrimental. Measurements included body composition, muscle thickness, and peak power through a force platform during vertical jumps. Data analysis focused on changes in muscle thickness, strength, and body composition, with statistical significance set at p \< 0.05. The study aimed to provide insights into how different training volumes affect physiological adaptations in untrained women, potentially guiding fitness regimen optimizations for similar populations.