칭찬 | Effect of Betaine Supplementation on Power Performance and Fatigue
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작성자 Tamela 작성일25-09-19 06:57 조회6회 댓글0건본문
<p><img src="https://burst.shopifycdn.com/photos/man-works-on-his-laptop-and-wears-facemask.jpg?width=746&format=pjpg&exif=0&iptc=0">The purpose of this study was to examine the efficacy of 15 days of betaine supplementation on muscle endurance, power performance and rate of fatigue in active college-aged men. Twenty-four male subjects were randomly assigned to one of two groups. The first group (BET; 20.4 ± 1.3 years; height: Titan Rise Male Enhancement 176.8 ± 6.6 cm; body mass: 77.8 ± 13.4 kg) consumed the supplement daily, and the second group (PL; 21.4 ± 4.7 years; height: 181.3 ± 5.9 cm; body mass: 83.3 ± 5.2 kg) consumed a placebo. Subjects were tested prior to the onset of supplementation (T1) and 7 (T2) and 14 days (T3) following supplementation. Each testing period occurred over a 2-day period. During day one of testing subjects performed a vertical jump power (VJP) and a bench press throw (BPT) power test. In addition, subjects were required to perform as many repetitions as possible with 75% of their 1-RM in both the squat and bench press exercises.</p><br/><br/><div style="clear:both;"></div><p>Both peak and mean power was assessed on each repetition. On day two of testing subjects performed two 30-sec Wingate anaerobic power tests (WAnT), each test separated by a 5-min active rest. No differences were seen at T2 or T3 in the repetitions performed to exhaustion or in the number of repetitions performed at 90% of both peak and mean power between the groups in the bench press exercise. To quantify anaerobic power performance all subjects performed a Wingate anaerobic power test (Lode Excalibur, Groningen, <a href="http://jimiantech.com/g5/bbs/board.php?bo_table=w0dace2gxo&wr_id=417843">Titan Rise Nutrition</a> The Netherlands). After a warm-up period of 5 min of pedaling at 60 rpm interspersed with an three all-out sprints lasting 5 s, the subjects pedaled for 30 s at maximal speed against a constant force (1.2 Nm·kg-1). Subjects then performed an active rest for 5-minutes (repeat warm-up period) and then performed a second Wingate test. Peak power, mean power, total work and rate of fatigue were determined.</p><br/><br/><p>Peak power was defined as the highest mechanical power output elicited during the test and mean power was defined as the average mechanical power during each 30-s test. To quantify vertical jump power subjects performed a 3-jump power test. Following a brief warm-up period that included pedaling on a cycle ergometer for <a href="https://www.studiocaiazzo.com/2020/10/22/convincing-reasons-you-need-to-learn/">Titan Rise Nutrition</a> 5 min at 60 rpm, subjects stood on a portable force plate (Advanced Medical Technology Inc., Watertown, MA). The subject's hands were placed on his waist at all times. Upon cue each subject performed 3 consecutive vertical jumps with a standardized countermovement. The subject was instructed to maximize the height of each jump while minimizing the contact time with the force plate between jumps. Computer analysis was used to calculate power output. The highest power outputs were recorded. To quantify upper jump power subjects performed 3-repetitions with the bench press throw exercise. All bench press throws were performed on a Cormax bench throw device (Cormax Strength Power Systems; Valley City, ND)
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