This study investigated differences in heart rate recovery (HRR) and the underlying autonomic mechanisms following maximal and submaximal exercise between boys and men. Children are known to have a faster HRR than adults. However, the mechanism responsible for these differences is still largely unknown, but is thought to be due to differences in the autonomic nervous system. Ten boys (10.1 ± 0.8 years old) and ten men (24.2 ± 1.3 years old) completed a supine recovery following a maximal and submaximal exercise bout. HRR was measured as the decline in HR during the first minute of recovery and heart rate variability (HRV) was used to measure autonomic function. Boys had a
faster HRR during the first minute of recovery from maximal exercise (p<0.05), but there was no difference in HRR following submaximal exercise (p>0.05). The R-R coefficient of variation and high frequency power were both significantly greater following maximal exercise in boys than men. There were no differences in HRV variables following submaximal exercise. These findings suggest that faster parasympathetic re-activation could be a mechanism responsible for faster HRR in boys compared to men, especially following maximal exercise. / School of Physical Education, Sport, and Exercise Science
| Identifer | oai:union.ndltd.org:BSU/oai:cardinalscholar.bsu.edu:123456789/195895 |
| Date | 23 May 2012 |
| Creators | Guilkey, Justin P. |
| Contributors | Mahon, Anthony D. |
| Source Sets | Ball State University |
| Detected Language | English |
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