Dataset Information

Influence of recovery duration during 6-s sprint interval exercise on time spent at high rates of oxygen uptake.

ABSTRACT:

Background/objective

This study examined whether time spent at high rates of oxygen consumption (VO₂) during 6-s sprint interval exercises (SIE) is a function of recovery interval duration.

Methods

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 (SIE₁₅, SIE₃₀, and SIE₆₀ trials respectively), and a work duration-matched Wingate-SIE (8?×?30-s all-out sprints with 4-min passive recovery, SIE_Win trial). The accumulated exercise time at ? 80%, 85%, 90%, 95% and 100% of VO_2max, and maximum heart rate (HR_max) in the four trials were compared.

Results

During the 6-s SIEs, accumulated time spent at all selected high rates of VO_2max increased as recovery time decreased, whilst the SIE work rate decreased (p?Win, although the exercise lasted longer, the time spent at ?90% VO_2max (74?±?16?s) was significant less than that in SIE₁₅ (368?±?63?s, p?30 (118?±?30?s, p?>?.05), and longer than that in SIE₆₀ (20?±?14?s, p?max were similar to those for VO₂, although the temporal characteristics of the increases in HR and VO₂ during the SIEs were different.

Conclusion

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 SIE₁₅ protocol may represent a potential alternative to 30-s SIE_Win in the development of time-efficient aerobic training intervention.

SUBMITTER: Shi Q

PROVIDER: S-EPMC6323236 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Publications

Influence of recovery duration during 6-s sprint interval exercise on time spent at high rates of oxygen uptake.

Shi Qingde Q Tong Tomas K TK Sun Shengyan S Kong Zhaowei Z Chan Chan Kit CK Liu Wei W Nie Jinlei J

Journal of exercise science and fitness 20180201 1

<h4>Background/objective</h4>This study examined whether time spent at high rates of oxygen consumption (VO<sub>2</sub>) during 6-s sprint interval exercises (SIE) is a function of recovery interval duration.<h4>Methods</h4>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<sub>15</sub>, SIE<sub>30</sub>, and SIE<sub>60</sub> trials respectively), and a work duration-matched Win ...[more]

PMID: 30662487

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Project description:This study aimed to examine the agreement and acceptance of ultra-short-term heart rate (HR) variability (HRVUST) measures during post-exercise recovery in college football players. Twenty-five male college football players (age: 19.80 ± 1.08 years) from the first division of national university championship voluntarily participated in the study. The participants completed both a repeated sprint ability test (RSA) and a Yo-Yo intermittent recovery test level 1 (YYIR1) in a randomized order and separated by 7 days. Electrocardiographic signals (ECG) were recorded in a supine position 10 min before and 30 min after the exercise protocols. The HR and HRV data were analyzed in the time segments of baseline 5~10 min (Baseline), post-exercise 0~5 min (Post 1), post-exercise 5~10 min (Post 2), and post-exercise 25~30 min (Post 3). The natural logarithm of the standard deviation of normal-to-normal intervals (LnSDNN), root mean square of successive normal-to-normal interval differences (LnRMSSD), and LnSDNN:LnRMSSD ratio was compared in the 1st min HRVUST and 5-min criterion (HRVcriterion) of each time segment. The correlation of time-domain HRV variables to 5-min natural logarithm of low frequency power (LnLF) and high frequency power (LnHF), and LF:HF ratio were calculated. The results showed that the HRVUST of LnSDNN, LnRMSSD, and LnSDNN:LnRMSSD ratio showed trivial to small effect sizes (ES) (-0.00~0.49), very large and nearly perfect interclass correlation coefficients (ICC) (0.74~0.95), and relatively small values of bias (RSA: 0.01~-0.12; YYIR1: -0.01~-0.16) to the HRVcriterion in both exercise protocols. In addition, the HRVUST of LnLF, LnHF, and LnLF:LnHF showed trivial to small ES (-0.04~-0.54), small to large ICC (-0.02~0.68), and relatively small values of bias (RSA: -0.02~0.65; YYIR1: 0.03~-0.23) to the HRVcriterion in both exercise protocols. Lastly, the 1-min LnSDNN:LnRMSSD ratio was significantly correlated to the 5-min LnLF:LnHF ratio with moderate~high level (r = 0.43~0.72; p < 0.05) during 30-min post-exercise recovery. The post-exercise 1-min HRV assessment in LnSDNN, LnRMSSD, and LnSDNN:LnRMSSD ratio was acceptable and accurate in the RSA and YYIR1 tests, compared to the 5-min time segment of measurement. The moderate to high correlation coefficient of the HRVUST LnSDNN:LnRMSSD ratio to the HRVcriterion LnLF:LnHF ratio indicated the capacity to facilitate the post-exercise shortening duration of HRV measurement after maximal anaerobic or aerobic shuttle running. Using ultra-short-term record of LnSDNN:LnRMSSD ratio as a surrogate for standard measure of LnLF:LnHF ratio after short-term bouts of maximal intensity field-based shuttle running is warranted.

Dataset Information

Influence of recovery duration during 6-s sprint interval exercise on time spent at high rates of oxygen uptake.

Background/objective

Methods

Results

Conclusion

Publications

Influence of recovery duration during 6-s sprint interval exercise on time spent at high rates of oxygen uptake.

Similar Datasets

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