Effects of supplementation with creatine monohydrate and beta-alanine, alone or combined, on repeated sprint performance and physiological parameters in amateur team and racket sport players

IF 0.9 4区医学 Q4 REHABILITATION

Kinesiology Pub Date : 2020-06-30 DOI:10.26582/k.52.1.15

A. Delextrat, N. Targen, Georgina Impson-Davey, Daniel Kapsis, J. Bateman, N. Terrados, Julio Calleja González

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引用次数: 2

Abstract

The purpose of this study was to compare the combined effects of creatine monohydrate (Cr) and beta-alanine (BA) with their isolated use on performance and physiological parameters during repeated sprint sequences (RSS). Forty-four male (n=34) and female (n=10) amateur team- and racket sport players (25.1±3.1 years; 175.2±9.8 cm; 76.0±10.3 kg; 15.2±6.8% body fat) performed ten repetitions of 6-s sprints with departure every 30 s, before and after a 28-day supplementation period with either Cr (n=11, 5 g.day-1), BA (n=10, 6 g.day-1), combined Cr and BA (n=12, 5 g.day-1 of Cr plus 6g.day-1 of BA) or placebo (11 g.day-1 of rice flour). Peak (PP) and mean power (MP), performance decrement (%Dec), heart rate (HR), blood lactate concentration (LA) and perceived exertion (RPE) were measured. Analyses of variance (ANOVA) were used to determine the effects of groups (Cr, BA, CrBA, P), sprint number (1 to 10), and time (pre- vs. post-supplementation) on all variables. A significant increase in PP was shown in the post- compared to pre-supplementation in Cr (+5.2%) and BA (+5.2%) groups only (p<0.05), and significant decreases in MP in all groups (3.7% to 6.4%, p<0.05), except BA. %Dec was significantly decreased post supplementation in the Cr group only (17.4%, p<0.05). No effects were shown on HR, RPE and LA (p<0.05). These results show no additional benefits of the combination of Cr and BA on RSS performance and suggest that longer sprint or total exercise duration might be necessary to observe benefits of the combined supplementation.

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单用或联合补充一水肌酸和-丙氨酸对业余团队和球拍运动运动员重复短跑成绩和生理参数的影响

本研究的目的是比较一水肌酸(Cr)和β -丙氨酸(BA)的联合使用和单独使用对重复冲刺序列(RSS)运动性能和生理参数的影响。业余团体和球拍运动运动员男34人，女10人，年龄25.1±3.1岁;175.2±9.8厘米;76.0±10.3公斤;(15.2±6.8%体脂)进行10次6秒短跑，每30秒出发一次，分别在28天补充Cr (n= 11,5 g.day-1)、BA (n= 10,6 g.day-1)、Cr和BA (n= 12,5 g.day-1)的前后。或安慰剂(11 g.day-1米粉)。测量峰值(PP)和平均功率(MP)、性能衰减(%Dec)、心率(HR)、血乳酸浓度(LA)和感觉运动(RPE)。采用方差分析(ANOVA)确定各组(Cr, BA, CrBA, P)，冲刺次数(1至10)和时间(补充前与补充后)对所有变量的影响。除添加BA外，添加Cr(+5.2%)和BA(+5.2%)组PP显著高于添加前(p<0.05)， MP显著低于添加前(3.7% ~ 6.4%，p<0.05)。仅Cr组在添加后显著降低了%Dec (17.4%， p<0.05)。对HR、RPE、LA均无影响(p<0.05)。这些结果表明，Cr和BA组合对RSS性能没有额外的好处，并且表明可能需要更长的冲刺或总运动时间才能观察到组合补充的好处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Kinesiology REHABILITATION-SPORT SCIENCES

CiteScore

1.90

自引率

8.30%

发文量

审稿时长

>12 weeks

期刊介绍： Kinesiology – International Journal of Fundamental and Applied Kinesiology (print ISSN 1331- 1441, online ISSN 1848-638X) publishes twice a year scientific papers and other written material from kinesiology (a scientific discipline which investigates art and science of human movement; in the meaning and scope close to the idiom “sport sciences”) and other adjacent human sciences focused on sport and exercise, primarily from anthropology (biological and cultural alike), medicine, sociology, psychology, natural sciences and mathematics applied to sport in its broadest sense, history, and others. Contributions of high scientific interest, including also results of theoretical analyses and their practical application in physical education, sport, physical recreation and kinesitherapy, are accepted for publication. The following sections define the scope of the journal: Sport and sports activities, Physical education, Recreation/leisure, Kinesiological anthropology, Training methods, Biology of sport and exercise, Sports medicine and physiology of sport, Biomechanics, History of sport and Book reviews with news.