Key result
Active recovery at 50% and 67% of maximal aerobic velocity resulted in significantly longer absolute time spent at a high percentage of maximal oxygen uptake compared with 84% intensity.
Why the study?
Does recovery intensity influence the time spent at maximal oxygen uptake during intermittent exercise in young endurance-trained athletes?
Does recovery intensity influence the time spent at maximal oxygen uptake during intermittent exercise in young endurance-trained athletes?
Active recovery at 50% and 67% of maximal aerobic velocity induces extensive cardiorespiratory solicitation, with the optimal intensity depending on the exercise objective.
Moderate active recovery may prolong near-maximal VO2 exposure in athlete intervals; leaves open optimal intensity selection for training goals.
In this study, we examined the effects of three recovery intensities on time spent at a high percentage of maximal oxygen uptake (t90[Vdot]O(2max)) during a short intermittent session. Eight endurance-trained male adolescents (16 +/- 1 years) performed four field tests until exhaustion: a graded test to determine maximal oxygen uptake ([Vdot]O(2max); 57.4 +/- 6.1 ml x min(-1) . kg(-1)) and maximal aerobic velocity (17.9 +/- 0.4 km x h(-1)), and three intermittent exercises consisting of repeat 30-s runs at 105% of maximal aerobic velocity alternating with 30 s active recovery at 50% (IE(50)), 67% (IE(67)), and 84% (IE(84)) of maximal aerobic velocity. In absolute values, mean t90[Vdot]O(2max) was not significantly different between IE(50) and IE(67), but both values were significantly longer compared with IE(84). When expressed in relative values (as a percentage of time to exhaustion), mean t90[Vdot]O(2max) was significantly higher during IE(67) than during IE(50). Our results show that both 50% and 67% of maximal aerobic velocity of active recovery induced extensive solicitation of the cardiorespiratory system. Our results suggest that the choice of recovery intensity depends on the exercise objective.
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Thévenet et al. (2008) studied Endurance-trained athletes (n=8). Active recovery at varying intensities vs. Different recovery intensities compared against each other was evaluated on Time spent at a high percentage of maximal oxygen uptake (t90VO2max). Active recovery at 50% and 67% of maximal aerobic velocity resulted in significantly longer absolute time spent at a high percentage of maximal oxygen uptake compared with 84% intensity.
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