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  • Title: Two seasons of weight cycling does not lower resting metabolic rate in college wrestlers.
    Author: Schmidt WD, Corrigan D, Melby CL.
    Journal: Med Sci Sports Exerc; 1993 May; 25(5):613-9. PubMed ID: 8492690.
    Abstract:
    Over the course of 2 yr, we prospectively studied the effect on resting metabolic rate (RMR) of multiple cycles of weight loss followed by regain in six weight cycling collegiate wrestlers (WC) (mean age = 19.0 yr) compared with 12 weight stable, physically active, nonwrestling controls (C) (mean age = 20.9 yr), whose body composition was similar to the wrestlers. Furthermore, during the second year of the investigation, a group of six nonweight cycling collegiate wrestlers (NWC) (mean age = 18.8 yr) were included in the analyses. The WC had previously undergone at least three seasons of weight cycling and continued this pattern during each year of the study. For the WC, RMR was determined by indirect calorimetry before and after a 6-month season of weight cycling for each of two consecutive years. A similar time frame was followed for measurement of RMR in the C, while for the NWC, pre- and postseason RMRs were measured only during the second year. During the 2 yr, the WC had significantly higher (P < 0.05) pre- and postseason measures of RMR compared with the C. A separate analysis comparing all three groups during the second year showed that RMR was not different for WC and NWC, and that RMR was higher for both wrestling groups compared with C. In this prospective study, weight cycling did not increase the thermogenic efficiency of collegiate wrestlers compared with either nonweight cycling wrestlers or weight stable controls, who were not wrestlers.
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