Shi Qingde, Tong Tomas K, Sun Shengyan, Kong Zhaowei, Chan Chan Kit, Liu Wei, Nie Jinlei
School of Physical Education and Sports, Macao Polytechnic Institute, Macao, China.
Dr. Stephen Hui Research Centre for Physical Recreation and Wellness, Department of Physical Education, Hong Kong Baptist University, Hong Kong, China.
J Exerc Sci Fit. 2018 Apr;16(1):16-20. doi: 10.1016/j.jesf.2018.01.001. Epub 2018 Feb 1.
BACKGROUND/OBJECTIVE: This study examined whether time spent at high rates of oxygen consumption (VO) during 6-s sprint interval exercises (SIE) is a function of recovery interval duration.
In a randomised crossover study, thirteen male endurance runners performed 40 × 6-s all-out sprints interspersed with 15-s, 30-s and 60-s passive recovery intervals (SIE, SIE, and SIE trials respectively), and a work duration-matched Wingate-SIE (8 × 30-s all-out sprints with 4-min passive recovery, SIE trial). The accumulated exercise time at ≥ 80%, 85%, 90%, 95% and 100% of VO, and maximum heart rate (HR) in the four trials were compared.
During the 6-s SIEs, accumulated time spent at all selected high rates of VO increased as recovery time decreased, whilst the SIE work rate decreased ( < .05). In SIE, although the exercise lasted longer, the time spent at ≥90% VO (74 ± 16 s) was significant less than that in SIE (368 ± 63 s, < .05), yet comparable to that in SIE (118 ± 30 s, > .05), and longer than that in SIE (20 ± 14 s, < .05). The differences between the four trials in accumulated time at high percentages of HR were similar to those for VO, although the temporal characteristics of the increases in HR and VO during the SIEs were different.
In conclusion, the duration of the recovery interval in 6-s SIE protocols appears to be a crucial parameter when sprint interval training is prescribed to enhance aerobic capacity. Further, the SIE protocol may represent a potential alternative to 30-s SIE in the development of time-efficient aerobic training intervention.
背景/目的：本研究探讨了在6秒冲刺间歇训练（SIE）期间，以高耗氧率（VO）所花费的时间是否是恢复间歇持续时间的函数。
在一项随机交叉研究中，13名男性耐力跑者进行了40次×6秒全力冲刺，其间穿插15秒、30秒和60秒的被动恢复间歇（分别为SIE、SIE和SIE试验），以及一个工作时长匹配的温盖特 - SIE（8次×30秒全力冲刺，4分钟被动恢复，SIE试验）。比较了四个试验中在VO的≥80%、85%、90%、95%和100%时的累计运动时间以及最大心率（HR）。
在6秒SIE期间，随着恢复时间的减少，在所有选定的高VO率下所花费的累计时间增加，而SIE工作率降低（P<0.05）。在SIE中，尽管运动持续时间更长，但在≥90%VO时所花费的时间（74±16秒）显著少于SIE中的时间（368±63秒，P<0.05），但与SIE中的时间（118±30秒，P>0.05）相当，且长于SIE中的时间（20±14秒，P<0.05）。四个试验在高百分比HR时的累计时间差异与VO的差异相似，尽管SIE期间HR和VO增加的时间特征不同。
总之，当规定进行冲刺间歇训练以提高有氧能力时，6秒SIE方案中的恢复间歇持续时间似乎是一个关键参数。此外，SIE方案在开发高效有氧训练干预方面可能是30秒SIE的潜在替代方案。
