Inspiratory muscle warm-up does not improve cycling time-trial performance
Article
Article Title | Inspiratory muscle warm-up does not improve cycling time-trial performance |
---|---|
ERA Journal ID | 9750 |
Article Category | Article |
Authors | Johnson, M. A. (Author), Gregson, I. R. (Author), Mills, D. E. (Author), Gonzalez, J. T. (Author) and Sharpe, G. R. (Author) |
Journal Title | European Journal of Applied Physiology |
Journal Citation | 114 (9), pp. 1821-1830 |
Number of Pages | 10 |
Year | 2014 |
Place of Publication | Germany |
ISSN | 1439-6319 |
1439-6327 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00421-014-2914-x |
Web Address (URL) | http://link.springer.com/article/10.1007/s00421-014-2914-x |
Abstract | Purpose: This study examined the effects of an active cycling warm-up, with and without the addition of an inspiratory muscle warm-up (IMW), on 10-km cycling time-trial performance. Methods: Ten cyclists (VO2 max = 65 ± 9 mL kg−1 min−1) performed a habituation 10-km cycling time-trial and three further time-trials preceded by either no warm-up (CONT), a cycling-specific warm-up (CYC) comprising three consecutive 5-min bouts at powers corresponding to 70, 80, and 90% of the gas exchange threshold, or a cycling-specific warm-up preceded by an IMW (CYC + IMW) comprising two sets of 30 inspiratory efforts against a pressure-threshold load of 40% maximal inspiratory pressure (MIP). The cycling warm-up was followed by 2-min rest before the start of the time-trial. Results: Time-trial performance times during CYC (14.75 ± 0.79 min) and CYC + IMW (14.70 ± 0.75 min) were not different, although both were faster than CONT (14.99 ± 0.90 min) (P < 0.05). Throughout the time-trial, physiological (minute ventilation, breathing pattern, pulmonary gas exchange, heart rate, blood lactate concentration and pH) and perceptual (limb discomfort and dyspnoea) responses were not different between CYC and CYC + IMW. Baseline MIP during CONT and CYC was 151 ± 31 and 156 ± 39 cmH2O, respectively, and was unchanged following the time-trial. MIP increased by 8% after IMW (152 ± 27 vs. 164 ± 27 cmH2O, P < 0.05) and returned to baseline after the time-trial. Conclusions: Improvements in 10-km cycling time-trial performance following an active cycling warm-up were not magnified by the addition of an IMW. Therefore, an appropriately designed active whole-body warm-up does adequately prepare the inspiratory muscles for cycling time-trials lasting approximately 15 min. |
Keywords | respiratory muscle; pacing; prior exercise; perception |
ANZSRC Field of Research 2020 | 420702. Exercise physiology |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nottingham Trent University, United Kingdom |
University of Queensland | |
Northumbria University, United Kingdom | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q35q8/inspiratory-muscle-warm-up-does-not-improve-cycling-time-trial-performance
1719
total views9
total downloads0
views this month0
downloads this month