We previously reported that after a short course of rowing training the responsiveness to methacholine (Mch) in the absence of deep inspiration (DI) decreased in healthy subjects. We assessed whether a similar beneficial effect of exercise on airway responsiveness could occur in asthmatics. Nine patients (M/F: 3/6; mean age±SD: 24±2 yrs) with mild untreated asthma (FEV(1): 100±7.4% pred, FEV(1)/VC 90±6.5%) underwent a series of single dose Mch bronchoprovocations in the absence of DI in the course of a indoor rowing training consisted of two to three sessions per week for 10 weeks (total 28 sessions). Each session included a warm-up period for 20 min (running and stretching), and a specific training on rowing ergometer (Concept II, Morrisville, VT) for 40 to 70 minutes. In order to document power output, strokes, and mean maximal speed for each individual, a 1000-m all-out rowing test was first performed after a 20 min warm-up. Based on the performance, watt stroke-1 and strokes min-1 recorded in the 1000-m all-out test, a certified European rowing coach created personalized training programs. At week 0, 5 and 10, 1000- and 2000-m all-out rowing tests were performed to evaluate performance and re-assess the individualized workload. The 10-week training program included 20% of all training time at maximal power output, 10% of all training time at 75-90% of maximal power output and 70% of all training time at 60-65% of maximal power output. All sessions were supervised by a certified training instructor and a pulmonologist. The single dose Mch was established as the dose able to induce at least 15% reduction in IVC, and was administered to each subject at every challenge occasion. Five asthmatics (M/F: 1/4; mean age±SD: 26±3 yrs) with similar baseline lung function (FEV1: 102±7.0% pred, and FEV(1)/VC: 83±6.0%; p=0.57 and p=0.06, respectively) not participating in the rowing training program, served as controls. In the trained group, the Mch-induced reduction in IVC from baseline was 22±10% at week 0, 13±11% at week 5 (p=0.03), 11±8% at week 10 (p=0.028). The Mch-induced reduction in FEV(1) did not change with exercise (p=0.69). The reduction in responsiveness induced by exercise was of the same magnitude of that previously obtained in healthy subjects (50% with respect to pre-training). Conversely, Mch-induced reduction in IVC in controls remained unchanged after 10 weeks (% reduction IVC at baseline: 21±20%; after 10 weeks: 29±14%, p=0.28). This study indicates that a short course of rowing training is capable of reducing airway responsiveness in mild asthmatics.

Zangla, D., Scichilone, N., Morici, G., Arrigo, R., Cardillo, I., Bonsignore, M.R. (2012). Effects of rowing training on airway responsiveness in asthmatics. In Sport Sciences for Health (pp.4-5). milano : springer.

Effects of rowing training on airway responsiveness in asthmatics

ZANGLA, Daniele;SCICHILONE, Nicola Alessandro;MORICI, Giuseppe;ARRIGO, Rita;CARDILLO, Irene;BONSIGNORE, Maria Rosaria
2012-01-01

Abstract

We previously reported that after a short course of rowing training the responsiveness to methacholine (Mch) in the absence of deep inspiration (DI) decreased in healthy subjects. We assessed whether a similar beneficial effect of exercise on airway responsiveness could occur in asthmatics. Nine patients (M/F: 3/6; mean age±SD: 24±2 yrs) with mild untreated asthma (FEV(1): 100±7.4% pred, FEV(1)/VC 90±6.5%) underwent a series of single dose Mch bronchoprovocations in the absence of DI in the course of a indoor rowing training consisted of two to three sessions per week for 10 weeks (total 28 sessions). Each session included a warm-up period for 20 min (running and stretching), and a specific training on rowing ergometer (Concept II, Morrisville, VT) for 40 to 70 minutes. In order to document power output, strokes, and mean maximal speed for each individual, a 1000-m all-out rowing test was first performed after a 20 min warm-up. Based on the performance, watt stroke-1 and strokes min-1 recorded in the 1000-m all-out test, a certified European rowing coach created personalized training programs. At week 0, 5 and 10, 1000- and 2000-m all-out rowing tests were performed to evaluate performance and re-assess the individualized workload. The 10-week training program included 20% of all training time at maximal power output, 10% of all training time at 75-90% of maximal power output and 70% of all training time at 60-65% of maximal power output. All sessions were supervised by a certified training instructor and a pulmonologist. The single dose Mch was established as the dose able to induce at least 15% reduction in IVC, and was administered to each subject at every challenge occasion. Five asthmatics (M/F: 1/4; mean age±SD: 26±3 yrs) with similar baseline lung function (FEV1: 102±7.0% pred, and FEV(1)/VC: 83±6.0%; p=0.57 and p=0.06, respectively) not participating in the rowing training program, served as controls. In the trained group, the Mch-induced reduction in IVC from baseline was 22±10% at week 0, 13±11% at week 5 (p=0.03), 11±8% at week 10 (p=0.028). The Mch-induced reduction in FEV(1) did not change with exercise (p=0.69). The reduction in responsiveness induced by exercise was of the same magnitude of that previously obtained in healthy subjects (50% with respect to pre-training). Conversely, Mch-induced reduction in IVC in controls remained unchanged after 10 weeks (% reduction IVC at baseline: 21±20%; after 10 weeks: 29±14%, p=0.28). This study indicates that a short course of rowing training is capable of reducing airway responsiveness in mild asthmatics.
ott-2012
SISMES 2012
Palermo
5-7 ottobre 2012
IV
2012
74
Zangla, D., Scichilone, N., Morici, G., Arrigo, R., Cardillo, I., Bonsignore, M.R. (2012). Effects of rowing training on airway responsiveness in asthmatics. In Sport Sciences for Health (pp.4-5). milano : springer.
Proceedings (atti dei congressi)
Zangla,D; Scichilone, N; Morici, G; Arrigo, R; Cardillo, I; Bonsignore, MR
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/68423
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