Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/6556
Title: Effects of recovery mode on performance, O2 uptake, and O2 deficit during high-intensity intermittent exercise
Authors: Dorado, C 
Sanchis-Moysi, J 
Calbet, José A.L. 
UNESCO Clasification: 241106 Fisiología del ejercicio
Keywords: Oxygen
Fatigue
Exercise
Issue Date: 2004
Publisher: 1066-7814
Journal: Canadian Journal of Applied Physiology 
Abstract: The aim of this study was to determine the influence of activity performed during the recovery period on the aerobic and anaerobic energy yield, as well as on performance, during high-intensity intermittent exercise (HIT). Ten physical education students participated in the study. First they underwent an incremental exercise test to assess their maximal power output (Wmax) and VO2max. On subsequent days they performed three different HITs. Each HIT consisted of four cycling bouts until exhaustion at 110% Wmax. Recovery periods of 5 min were allowed between bouts. HITs differed in the kind of activity performed during the recovery periods: pedaling at 20% VO2max (HITA), stretching exercises, or lying supine. Performance was 3-4% and aerobic energy yield was 6-8% (both p < 0.05) higher during the HITA than during the other two kinds of HIT. The greater contribution of aerobic metabolism to the energy yield during the high-intensity exercise bouts with active recovery was due to faster VO2 kinetics (p< 0.01) and a higher VO2peak during the exercise bouts preceded by active recovery (p < 0.05). In contrast, the anaerobic energy yield (oxygen deficit and peak blood lactate concentrations) was similar in all HITs. Therefore, this study shows that active recovery facilitates performance by increasing aerobic contribution to the whole energy yield turnover during high-intensity intermittent exercise.
URI: http://hdl.handle.net/10553/6556
ISSN: 1543-2718
Source: Canadian Journal Of Applied Physiology-Revue Canadienne De Physiologie Appliquee[ISSN 1066-7814],v. 29 (3), p. 227-244
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