Shorter intervals at peak SV vs.V̇O2max may yield high SV with less physiological stress
Shorter intervals at peak SV vs.V̇O2max may yield high SV with less physiological stress
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峰值 SV 与 V̇O2max 的间隔较短可能会产生高 SV 且生理压力较小
DOI：
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发表时间：
2015
影响因子：
3.2
通讯作者：
Bulent Yapicioglu
中科院分区：
文献类型：
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作者：
M. Çolakoğlu;O. Ozkaya;G. A. Balci;Bulent Yapicioglu
摘要本研究的目的是评估是否可以通过对应于峰值SV（SV峰值）与最大耗氧量（）以及短与长间期（SI与LI）的运动强度获得更大和可持续的每搏输出量（SV）反应。9名中等至受过良好训练的男性运动员参加了自行车、田径和田径领域的区域级专家的比赛，自愿参加研究（：59.7 ± 7.4 mL·min-1·kg-1）。在熟悉课程后，确定，然后使用运动强度在40%-100%的一氧化氮再呼吸（N2 ORB）方法评价SV峰值。然后，每个单独的参与者在自行车测力计上进行SI（SI和SISVpeak）和LI（LI和LISVpeak）锻炼期间锻炼对应于个人和SV peak的瓦数。主要结果表明，SI和SISVpeak产生的SV反应均大于LI和LISVpeak（p ≤ 0.05）。LISVpeak的平均SV反应大于LI（p ≤ 0.05），但SISVpeak和SI之间无统计学差异。然而，基于VO 2、呼吸交换率、心率和感知疲惫率的SV峰值的生理应激显著低于强度（p ≤ 0.05）。此外，运动阶段的SV反应在早期阶段增加，并保持稳定，直到SI和SISV峰值训练结束（p > 0.05），而在LI和LISV峰值训练阶段，它们逐渐减少（p ≤ 0.05）。总之，如果训练的目的是以更少的生理压力来改善SVpeak，那么SISVpeak似乎是比本研究中测试的其他模式更好的选择。
Abstract The purpose of this study was to evaluate whether greater and sustainable stroke volume (SV) responses may be obtained by exercise intensities corresponding to peak SV (SVpeak) vs. maximal O2 consumption (), and short vs. long intervals (SI vs. LI). Nine moderate- to well-trained male athletes competing at regional level specialists of cyclist, track and field volunteered to take part in the study (: 59.7 ± 7.4 mL·min−1·kg−1). Following familiarisation sessions, was determined, and then SVpeak was evaluated using exercise intensities at 40%–100% of by nitrous-oxide rebreathing (N2ORB) method. Then each separate participant exercised wattages corresponding to individual and SVpeak during both SI (SI and SISVpeak) and LI (LI and LISVpeak) workouts on a cycle ergometer. Main results showed that both SI and SISVpeak yielded greater SV responses than LI and LISVpeak (p ≤ 0.05). Mean SV responses were greater in LISVpeak than in LI (p ≤ 0.05), but there was no statistical difference between SISVpeak and SI. However, there was significantly less physiological stress based on VO2, respiratory exchange ratio, heart rate and rate of perceived exhaustion in SVpeak than in intensities (p ≤ 0.05). Moreover, SV responses at exercise phases increased in the early stages and remain stable until the end of SI and SISVpeak workouts (p > 0.05), while they were gradually decreasing in LI and LISVpeak sessions (p ≤ 0.05). In conclusion, if the aim of a training session is to improve SVpeak with less physiological stress, SISVpeak seems a better alternative than other modalities tested in the present study.