Study: an investigation of the time course of psychological, physiological and performance changes of two USA weightlifters preparing for a national weightlifting championship. One female (24.5y, 53.8±0.3kg, 155.4cm) and one male weightlifter (25.8y, 92.7±1.2kg, 189cm) volunteered for the study. Body mass, psychological inventories, vastus lateralis cross-sectional area (CSA), and jumping performance were assessed weekly beginning 11-weeks from competition (COMP). During 100-days of Specific Preparation, five baseline measurements were collected for all tests. In the final 30 days, the athletes used a tapering method where training volume load was reduced by 48% and training intensity was maintained or increased by 22%. Statistical analyses were conducted using a magnitude-based inferences approach for single-subject designs. Weightlifting performance goals were met for the female (COMP total=159kg) but not for the male (COMP total=292kg). There were almost certain, extremely large (likelihood=99%, effect size [ES]=4.7) and possibly moderate (69%, ES=0.4) decreases in body mass the day of COMP for the female and male, respectively, relative to baseline values. The week of COMP, muscle CSA possibly decreased for the female (65%, ES=0.4) and male (55%, ES=0.4). The female and male athlete both reported increases in average recovery (ES=0.7; ES=0.4, respectively) and decreases in average stress (ES=0.5; ES=0.2, respectively) on the day of COMP. Jumping performance was elevated above baseline 3-4 days prior to the COMP where unloaded squat jump height (99%, ES=2.7; 82%, ES=2.1) and rate of force development (96%, ES=3.1; 99%, ES=2.1) were peaked on COMP day for both athletes. These findings indicated that the short recovery-stress scale and squat jumps can be used to assess high-level weightlifter`s preparedness for COMP. Further, high-level male and female weightlifters may expect to achieve and maintain peak performance 3-4 days prior to a COMP following a 1-week overreach and 3-week exponential taper while maintaining or increasing intensity. Contact: S. Kyle Travis, Caleb D. Bazyler, Satoshi Mizuguchi: Department of Sport, Exercise, Recreation, and Kinesiology, East Tennessee State University, Johnson City, TN, USA; William A. Sands: United States Ski and Snowboard Association, Park City, UT, USA
© Copyright 2020 19th International Symposium "Modern Science and Practice for Strength and Endurance Training" October 10-12, 2018. Julkaistu Tekijä Neuromuscular Research Center and Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä. Kaikki oikeudet pidätetään. / Kääntänyt https://www.DeepL.com/Translator