The effect of a period of resistance training and cross-fit on muscle strength and body composition of overweight girls

The aim of this study was to investigate the effect of a ۱۲-week period of resistance training and cross-fit on muscle strength and body composition of overweight girls.Thirty young overweight girls with a mean age of ۲۳ ±۲.۱ and a mean BMI of ۲۸ ±۱.۳ ، were randomly divided into three groups of ۱۰: control group, resistance training group, and Cross-fit training groups were divided. Before starting the training program, combined body mass indexes (fat and muscle mass) and strength of upper and lower torso muscles were evaluated from all subjects and for ۱۲ weeks, resistance training program (three times a week) with increasing intensity of ۶۰% to ۸۰% ۱RM was performed. The cross-fit training program was also performed three times a week for ۱۲ weeks. One-way ANOVA test was used for significance between groups and Bonferroni test was used for comparison between groups. Also, a significance level of less than ۰.۰۵ was considered.Significant differences between training groups and the control group in body mass index (p = ۰.۰۰۱), body fat percentage (p = ۰.۰۳), muscle mass (p = ۰.۰۰۱), right hand muscle strength and Left (p = ۰.۰۰۱) and lower limb muscle strength were observed (p = ۰.۰۰۱). However; There was a significant difference between the two groups of resistance training and cross-fit in body fat and muscle strength (P <۰.۰۵).Doing ۱۲ weeks of resistance training and cross-fit training methods has a positive and effective effect on body composition and muscle strength of overweight people.

کلیدواژه ها:

Resistance training ، Cross-fit ، Body composition ، Overweight girls