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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
Author to whom correspondence should be addressed.
Sports 2020, 8(5), 68;
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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