Influence of recovery mode (passive vs. active) on time spent at maximal oxygen uptake during an intermittent session in young and endurance-trained athletes期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Influence of recovery mode (passive vs. active) on time spent at maximal oxygen uptake during an intermittent session in young and endurance-trained athletes

Authors:	Delphine Thevenet Magaly Tardieu-Berger Serge Berthoin Jacques Prioux

Affiliation:	(1) Laboratoire “Motricitè, Interactions, Performance” (JE n°2438), UFR STAPS, Université de Nantes, Nantes Atlantique Université, 25 bis bd Guy Mollet, BP 72206, 44322 Nantes, Cedex 3, France;(2) Laboratoire d’Etudes de la Motricité Humaine (EA n°3608), Faculté des Sciences du Sport et de l’Education Physique, 9 rue de l’Université, 59790 Ronchin, France;(3) Ecole Normale Supérieure (ENS), Cachan, Antenne de Bretagne, Campus de Ker-Lann, 35170 Bruz, France;(4) Laboratoire de Physiologie et de Biomécanique de l’Exercice musculaire (EA n°1274), UFR APS, Université Rennes 2, Haute Bretagne, Place du Recteur Henri Le Moal, 35043 Rennes Cedex, France

Abstract:	The aim of this study was to analyze the effects of recovery mode (active/passive) on time spent at high percentage of maximal oxygen uptake ${({Vhbox{O}}_{2{rm max}})},$ i.e. above 90% of ${{Vhbox{O}}_{2{rm max}};(t{90}{Vhbox{O}}_{2{rm max}})}$ and above 95% of ${{Vhbox{O}}_{2{rm max}}};(t95{{Vhbox{O}}_{2{rm max}}})$ during a single short intermittent session. Eight endurance-trained male adolescents (15.9 ± 1.4 years) performed three field tests until exhaustion: a graded test to determine their ${{Vhbox{O}}_{2{rm max}}}$ (57.4 ± 6.1 ml min⁻¹ kg⁻¹), and maximal aerobic velocity (MAV; 17.9 ± 0.4 km h⁻¹), and in a random order, two intermittent exercises consisting of repeated 30 s runs at 105% of MAV alternated with 30 s passive (IE_P) or active recovery (IE_A, 50% of MAV). Time to exhaustion (t _lim) was significantly longer for IE_P than for IE_A (2145 ± 829 vs. 1072 ± 388 s, P < 0.01). No difference was found in ${t90{Vhbox{O}}_{2{rm max}}}$ and ${t95{Vhbox{O}}_{2{rm max}}}$ between IE_P (548 ± 499–316 ± 360 s) and IE_A (746 ± 417–459 ± 332 s). However, when expressed as a percentage of t _lim, ${t90{Vhbox{O}}_{2{rm max}}}$ and ${t95{Vhbox{O}}_{2{rm max}}}$ were significantly longer (P < 0.001 and P < 0.05, respectively) during IE_A (67.7 ± 19%–42.1 ± 27%) than during IE_P (24.2 ± 19%–13.8 ± 15%). Our results demonstrated no influence of recovery mode on absolute ${t90{Vhbox{O}}_{2{rm max}}}$ or ${t95{Vhbox{O}}_{2{rm max}}}$ mean values despite significantly longer t _lim values for IE_P than for IE_A. In conclusion, passive recovery allows a longer running time (t _lim) for a similar time spent at a high percentage of ${{Vhbox{O}}_{2{rm max}}}.$

Keywords:	Intermittent exercise Recovery mode Time spent at maximal oxygen uptake Time to exhaustion Young athlete
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