A comparison of combined running and weight training with circuit weight training

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Abstract
To compare the physiologic effects of a program of combined running and weight training (RUN-CWT) with a program of circuit weight training (CWT), 36 women (.hivin.X [mean] age = 35.7 yr) and 41 men (.hivin.X age = 36.1 yr) were randomly assigned to RUN-CWT, CWT and control groups. The training groups participated in 12-wk programs, 3 d [day] .cntdot. wk-1. Three circuits of 10 weight-training exercises were completed with 12-15 repetitions performed in 30 s at 40% of 1-repetition maximum at each station. The 30-min RUN-CWT program included 30 s of running on an indoor track following each CWT station; the 22.5-min CWT program included a 15-s rest period between stations. The RUN-CWT groups had a significant (+17%) increase in .ovrhdot.VO2 max [maximum O2 uptake] (females 30.5-35.7 ml .cntdot. kg-1 .cntdot. min-1 and males 39.7-46.3 ml .cntdot. kg-1 .cntdot. min-1) and strength (females +24% and males +21%), and a significant decrease in body fat percentage (females -3.2% and males -4.1%). The CWT groups also increased significantly in .ovrhdot.VO2 max (+12%) and strength (+17%) and decreased in body fat (-3.0%). The controls did not change significantly in any variable. Statistically, 1 training program was not shown to be superior to the other. Both programs of RUN-CWT and CWT were effective in improving measures of physical fitness.

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