Functional training of the inspiratory muscles improves load carriage performance
Journal article
Authors | Faghy, Mark and Brown, Peter I |
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Abstract | Inspiratory Muscle Training (IMT) whilst adopting body positions that mimic exercise (functional IMT; IMTF) improves running performance above traditional IMT methods in unloaded exercise. We investigated the effect of IMTF during load carriage tasks. Seventeen males completed 60 min walking at 6.5 km·h-1 followed by a 2.4 km load carriage time-trial (LCTT) whilst wearing a 25 kg backpack. Trials were completed at baseline; post 4 weeks IMT (consisting of 30 breaths twice daily at 50% of maximum inspiratory pressure) and again following either 4 weeks IMTF (comprising four inspiratory loaded core exercises) or maintenance IMT (IMTCON). Baseline LCTT was 15.93 ± 2.30 min and was reduced to 14.73 ± 2.40 min (mean reduction 1.19 ± 0.83 min, p < 0.01) after IMT. Following phase two, LCTT increased in IMTF only (13.59 ± 2.33 min, p < 0.05) and was unchanged in post-IMTCON. Performance was increased following IMTF, providing an additional ergogenic effect beyond IMT alone. Practitioner Summary: We confirmed the ergogenic benefit of Inspiratory Muscle Training (IMT) upon load carriage performance. Furthermore, we demonstrate that functional IMT methods provide a greater performance benefit during exercise with thoracic loads. Abbreviations: [Lac-]B: blood lactate; FEV1: forced expiratory volume in one second; FEV1/FVC: forced expiratory volume in one second/forced vital capacity ratio; FVC: forced vital capacity; HR: heart rate; IMT: inspiratory muscle training; IMTCON: inspiratory muscle training maintenance; IMTF: functional inspiratory muscle training; LC: load carriage; LCTT: load carriage time trial; Pdi: transdiaphragmatic pressure; PEF: peak expiratory flow; PEmax: maximum expiratory mouth pressure; PImax: maximum inspiratory mouth pressure; RPE: rating of perceived exertion; RPEbreating: rating of perceived exertion for the breathing; RPEleg: rating of perceived exertion for the legs; SEPT: sport-specific endurance plank test; V̇ O2: oxygen consumption; V̇ O2peak: peak oxygen consumption. |
Keywords | Inspiratory muscle training; exercise performance; functional training; load carriage |
Year | 2019 |
Journal | Ergonomics |
Journal citation | 62 (11), pp. 1439-1449 |
Publisher | Taylor & Francis |
ISSN | 00140139 |
13665847 | |
Digital Object Identifier (DOI) | https://doi.org/10.1080/00140139.2019.1652352 |
Web address (URL) | https://www.tandfonline.com/doi/abs/10.1080/00140139.2019.1652352 |
http://creativecommons.org/licenses/by-nd/4.0/ | |
http://hdl.handle.net/10545/624240 | |
hdl:10545/624240 | |
Output status | Published |
Publication dates | 16 Aug 2019 |
Publication process dates | |
Accepted | 29 Jul 2019 |
Deposited | 24 Oct 2019 |
Rights | Attribution-NoDerivatives 4.0 International |
Contributors | University of Derby and Loughborough University |
File | File Access Level Open |
File | File Access Level Open |
File |
https://repository.derby.ac.uk/item/94v2v/functional-training-of-the-inspiratory-muscles-improves-load-carriage-performance
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