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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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| ABSTRACT | |||
| The effects of different recovery protocols on heart rate recovery
(HRR) trend through fitted heart rate (HR) decay curves were assessed. Twenty
one trained male athletes and 19 sedentary male students performed a submaximal
cycle exercise test on four occasions followed by 5 min: 1) inactive recovery
in the upright seated position, 2) active (cycling) recovery in the upright
seated position, 3) supine position, and 4) supine position with elevated
legs. The HRR was assessed as the difference between the peak exercise HR
and the HR recorded following 60 seconds of recovery (HRR60). Additionally
the time constant decay was obtained by fitting the 5 minute post-exercise
HRR into a first-order exponential curve. Within- subject differences of
HRR60 for all recovery protocols in both groups were significant (p <
0. 001) except for the two supine positions (p > 0.05). Values of HRR60
were larger in the group of athletes for all conditions (p < 0.001).
The time constant of HR decay showed within-subject differences for all
recovery conditions in both groups (p < 0.01) except for the two supine
positions (p > 0.05). Between group difference was found for active recovery
in the seated position and the supine position with elevated legs (p <
0.05). We conclude that the supine position with or without elevated legs
accelerated HRR compared with the two seated positions. Active recovery
in the seated upright position was associated with slower HRR compared with
inactive recovery in the same position. The HRR in athletes was accelerated
in the supine position with elevated legs and with active recovery in the
seated position compared with non-athletes. Key words: Heart rate recovery, autonomic activity, active recovery, physical activity. |
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