High-intensity intermittent running training improves pulmonary function and alters exercise breathing pattern in children |
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Authors: | Cédric Nourry Fabien Deruelle Comlavi Guinhouya Georges Baquet Claudine Fabre Fédéric Bart Serge Berthoin Patrick Mucci |
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Affiliation: | (1) Multidisciplinary Analysis Laboratory of Sport Practices, Artois University, Chemin du Marquage, 62800 Liévin, France;(2) Laboratory of Human Movement Studies, Faculty of Sports Sciences and Physical Education, Lille 2 University, rue de l Université, 59790 Ronchin, France;(3) Pneumology Unit, Germon-Gauthier Hospital, 62660 rue Delbecque, Beuvry, France |
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Abstract: | We investigated the effects of short duration running training on resting and exercise lung function in healthy prepubescent children. One trained group (TrG) (n = 9; three girls and six boys; age = 9.7 ± 0.9 year) participated in 8 weeks of high-intensity intermittent running training and was compared to a control group (ContG) (n = 9; four girls and five boys; age = 10.3 ± 0.7 year). Before and after the 8-week period, the children performed pulmonary function tests and an incremental exercise test on a cycle ergometer. After the 8-week period, no change was found in pulmonary function in ContG. Conversely, an increase in forced vital capacity (FVC) (+7 ± 4% ; P = 0.026), forced expiratory volume in one second (+11 ± 6% ; P = 0.025), peak expiratory flows (+17 ± 4% ; P = 0.005), maximal expiratory flows at 50% (+16 ± 10% ; P = 0.019) and 75% (+15 ± 8% ; P = 0.006) of FVC were reported in TrG. At peak exercise, TrG displayed higher values of peak oxygen consumption (+15 ± 4% ; P<0.001), minute ventilation (+16 ± 5% ; P = 0.033) and tidal volume (+15 ± 5% ; P = 0.019) after training. At sub-maximal exercise, ventilatory response to exercise was lower (P = 0.017) in TrG after training, associated with reduced end-tidal partial oxygen pressure (P<0.05) and higher end-tidal partial carbon dioxide pressure (P = 0.026). Lower deadspace volume relative to tidal volume was found at each stage of exercise in TrG after training (P<0.05). Eight weeks of high-intensity intermittent running training enhanced resting pulmonary function and led to deeper exercise ventilation reflecting a better effectiveness in prepubescent children. |
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Keywords: | Aerobic fitness Pulmonary-function test Lung volume Breathing pattern Exercise Boys Girls |
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