Influence of beetroot juice supplementation on intermittent exercise performance
Influence of beetroot juice supplementation on intermittent exercise performance
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补充甜菜根汁对间歇运动表现的影响
DOI：
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发表时间：
2015
影响因子：
3
通讯作者：
A. Jones
中科院分区：
文献类型：
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作者：
Lee J. Wylie;S. Bailey;James F. Kelly;Jamie R. Blackwell;A. Vanhatalo;A. Jones
这项研究测试了补充硝酸盐(NO3−)可以改善不同工作和恢复间隔的高强度间歇运动中的表现的假设。10名男子团队运动运动员在不同的5天补充期间完成了高强度间歇自行车测试，补充期间分别服用富含NO3−的甜菜根汁(BR；8.2mmolN3−day−1)和NO3−耗尽的甜菜根汁(PL；0.08mmolN3−day−1)。完成项目：6-S全能短跑24次，间歇恢复24次S(24×6-S)；30-S全能短跑7次，间歇恢复240次S(7×30-S)；60-S全速跑6次，间歇恢复60次S(6×60-S)；分别补充第3、4、5天。在BR试验中，血浆[NO_2-−]升高237%。在24×6-S方案中，BR的平均功率输出显著高于PL(568±136vs.539±136W；P<；0.05)，但在7×30-S(558±95vs.562±94W)或6×60-S(374±57vs.375±59W)方案中，BR的平均功率输出没有明显增加(P>；0.05)。在24×6-S和7×30-S方案中，血乳酸的增加在BR方案中更大(P<；0.05)，但在6×60-S方案中没有差异(P>；0.05)。在穿插着短恢复期的短持续时间最大强度运动的重复发作中，BR可能是遍历的，但在较长的持续时间间隔或应用较长的恢复持续时间时，BR可能不一定。这些发现表明，在某些类型的间歇性运动中，BR可能对提高成绩有一定的意义。
This study tested the hypothesis that nitrate (NO3−) supplementation would improve performance during high-intensity intermittent exercise featuring different work and recovery intervals. Ten male team-sport players completed high-intensity intermittent cycling tests during separate 5-day supplementation periods with NO3−-rich beetroot juice (BR; 8.2 mmol NO3− day−1) and NO3−-depleted beetroot juice (PL; 0.08 mmol NO3− day−1). Subjects completed: twenty-four 6-s all-out sprints interspersed with 24 s of recovery (24 × 6-s); seven 30-s all-out sprints interspersed with 240 s of recovery (7 × 30-s); and six 60-s self-paced maximal efforts interspersed with 60 s of recovery (6 × 60-s); on days 3, 4, and 5 of supplementation, respectively. Plasma [NO2−] was 237 % greater in the BR trials. Mean power output was significantly greater with BR relative to PL in the 24 × 6-s protocol (568 ± 136 vs. 539 ± 136 W; P < 0.05), but not during the 7 × 30-s (558 ± 95 vs. 562 ± 94 W) or 6 × 60-s (374 ± 57 vs. 375 ± 59 W) protocols (P > 0.05). The increase in blood [lactate] across the 24 × 6-s and 7 × 30-s protocols was greater with BR (P < 0.05), but was not different in the 6 × 60-s protocol (P > 0.05). BR might be ergogenic during repeated bouts of short-duration maximal-intensity exercise interspersed with short recovery periods, but not necessarily during longer duration intervals or when a longer recovery duration is applied. These findings suggest that BR might have implications for performance enhancement during some types of intermittent exercise.
影响因子：
15.9
作者：
RICHARDSON, RS;NOYSZEWSKI, EA;WAGNER, PD
通讯作者：
WAGNER, PD
影响因子：
29
作者：
Castello, PR;David, PS;Poyton, RO
通讯作者：
Poyton, RO