CHANGES IN BODY-COMPOSITION, DIET, AND STRENGTH OF BODYBUILDERS DURING THE 12 WEEKS PRIOR TO COMPETITION

The purpose of this study was to monitor body composition, diet, and s trength in male bodybuilders (No. 6) during the 12 weeks prior to comp etition. Data were collected every third week and analyzed with repeat ed measures ANOVA (p<0.05). Significant decreases (p<0.01) were found in body mass (-7.3 kg) and hydrostatically determined percent fat (-5. 0%), while fat-free mass showed little change. All 7 skinfold sites we re reduced significantly (p<0.01) across the 12 weeks. Ultrasound scan revealed a significant decrease in skin thickness at the biceps (p<0. 01), but no change in biceps thickness. Circumferences decreased signi ficantly at all sites (p<0.05) except the chest. The greatest decrease s were at the waist (-6.9 cm) and hips (-4.3 cm). Maximal isometric de ad-lift force decreased significantly (p<0.05) across time (-129 N). I n comparison to off-season, both higher resistance and aerobic trainin g volumes were found during pre-competition. Nutritional analyses show ed significant reductions (p<0.05) in total kilocalories, protein, fat , and cholesterol intakes. Vitamin and mineral intakes exceeded the RD As. The data indicate the pre-competition practices were effective in reducing subcutaneous fat stores while maintaining muscle. Finally, th e onset of the pre-competition phase resulted in strength loss.