(English) Episode 108-Beyond Heavy Lifting - The Science of Smarter Strength, Power and Jump Gains

This systematic review and meta-analysis, "Dose–Response Modelling of Resistance Exercise Across Outcome Domains in Strength and Conditioning: A Meta‑analysis" by Swinton, Schoenfeld, and Murphy, synthesizes data from 295 studies involving over 6,700 participants to analyze how resistance training variables impact various athletic performance outcomes. The research investigates the relationships between training variables like frequency, volume, and intensity, alongside participant characteristics such as training status and sex, and improvements in maximum strength, power, vertical jump, change of direction, and sprinting performance. Findings reveal that training intensity and the specific outcome being measured are the most influential factors for the magnitude of improvement, with optimal load percentages varying significantly across different performance domains. For instance, heavier loads maximize strength gains, while lighter to moderate loads are more effective for vertical jump and power. The study also notes that intervention duration is positively correlated with greater improvements, but training status, sex, frequency, and overall volume demonstrated limited predictive capabilities in this comprehensive analysis.(Swinton PA, Schoenfeld BJ, Murphy A. Dose-response modelling of resistance exercise across outcome domains in strength and conditioning: A meta-analysis. Sports Med [Internet]. 2024;54(6):1579–94. Available from: http://dx.doi.org/10.1007/s40279-024-02006-3)