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Purpose The purpose of this research was to study and compare the effect of supramaximal high-intensity intermittent training (SIT) and specific-sports supramaximal high-intensity intermittent training (SSIT) on fat mass and lean mass in young athletes.
Methods Forty-five young male athletes were randomly allocated to control (CON), SIT, and SSIT groups. The SIT program consisted of 10 sets of 30 s of cycle ergometry at 170 % of VO2 max alternated with 30 s of resting periods. The SSIT program consisted of 10 training postures of 30 s alternated with 30 s of resting periods . Both programs were designed to yield the same energy expenditure and training session. The SIT and the SSIT underwent training program 3 times per week for 10 weeks. The control group (CON) was a group of athletes who did not receive any additional training programs. Dual-energy x-ray absorptiometry was used to measure fat mass and lean mass as compare to pre-post test.
Results Mean values of leg fat mass were siginificantly decrease (P<0.05) in both SIT and SSIT as compared to pre-test and CON group, and Mean values of leg lean mass were significantly increased (P<0.05) in both SIT and SSIT as compared to pre-test and CON group. There were no differences between three groups (SIT, SSIT, and CON) in mean values of fat mass and lean mass at trunk and arms pre-and post-test.
Conclusion Both SIT and SSIT programs have a similar effect on increasing of leg lean mass and decreasing of leg fat mass.
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