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Open AccessArticle

Heart Rate Responses during Sport-Specific High-Intensity Circuit Exercise in Child Female Gymnasts

School of Physical Education and Sports Science, National and Kapodistrian University of Athens, 172 37 Athens, Greece
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Sports 2020, 8(5), 68; https://doi.org/10.3390/sports8050068
Received: 9 April 2020 / Revised: 10 May 2020 / Accepted: 15 May 2020 / Published: 18 May 2020
This study examined heart rate (HR) responses during a sport-specific high-intensity circuit training session to indirectly assess cardiorespiratory stress in child athletes. Seventeen, female gymnasts, aged 9–11 years performed two 5-min 15 s sets of circuit exercise, interspersed by a 3 min rest interval. Each set included five rounds of five gymnastic exercises (7 s work, 7 s rest) executed with maximal effort. During the first circuit training set, peak heart rate (HR) was 192 ± 7 bpm and average HR was 83 ± 4% of maximum HR (HRmax), which was determined in a separate session. In the second set, peak HR and average HR were increased to 196 ± 8 bpm (p < 0.001, d = 0.55) and to 89 ± 4% HRmax (p < 0.001, d = 2.19), respectively, compared with the first set. HR was above 80% HRmax for 4.1 ± 1.2 min during set 1 and this was increased to 5.1 ± 0.4 min in set 2 (p < 0.001, d = 1.15). Likewise, HR was above 90% of HRmax for 2.0 ± 1.2 min in set 1 and was increased to 3.4 ± 1.7 min in set 2 (p < 0.001, d = 0.98). In summary, two 5-min 15 s sets of high-intensity circuit training using sport-specific exercises, increased HR to levels above 80% and 90% HRmax for extended time periods, and thus may be considered as an appropriate stimulus, in terms of intensity, for improving aerobic fitness in child female gymnasts. View Full-Text
Keywords: aerobic fitness; intermittent exercise; prepubertal children aerobic fitness; intermittent exercise; prepubertal children
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Salagas, A.; Donti, O.; Katsikas, C.; Bogdanis, G.C. Heart Rate Responses during Sport-Specific High-Intensity Circuit Exercise in Child Female Gymnasts. Sports 2020, 8, 68.

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