Hypertrophy Science: Concurrent Training

Resistance training combined with aerobic exercise in a single program is known as concurrent training (1). 

Wilson et al. did meta-analysis of 21 studies with a total of 422 effect sizes. Concurrent training results in decrements in strength, hypertrophy and power(although overall power is the major variable affected), however while some individuals experience strength decrements others experience substantial gains. The interference effect may be a result of overreaching and overtrainingand stimulates competing adaptations over a long-term training program. The longer the endurance activity the greater the interference. 

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