Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled Trial
Objective. To examine whether a programme of inspiratory muscle training (IMT) improves accumulative distance of self-paced walking in overweight and obese adults. Methods. A total of 15 overweight and obese adults were randomized into experimental (EXP: 𝑛=8) and placebo (PLA: 𝑛=7) groups. Lung fun...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Obesity |
| Online Access: | http://dx.doi.org/10.1155/2012/918202 |
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| author | A. M. Edwards G. P. Maguire D. Graham V. Boland G. Richardson |
| author_facet | A. M. Edwards G. P. Maguire D. Graham V. Boland G. Richardson |
| author_sort | A. M. Edwards |
| collection | DOAJ |
| description | Objective. To examine whether a programme of inspiratory muscle training (IMT) improves accumulative distance of self-paced walking in overweight and obese adults.
Methods. A total of 15 overweight and obese adults were randomized into experimental (EXP: 𝑛=8) and placebo (PLA: 𝑛=7) groups. Lung function, inspiratory muscle performance, 6-minute walking test, and predicted ̇VO2 max were assessed prior to and following the 4-week IMT intervention. Both groups performed 30 inspiratory breaths, twice daily using a proprietary inspiratory resistance device set to 55% of baseline maximal effort (EXP), or performing the same inspiratory training procedure at the minimum resistive setting (PLA).
Results. Lung function was unchanged in both groups after-training; however inspiratory muscle strength was significantly improved in EXP (19±25.2 cm H2O gain; 𝑃<0.01) but did not significantly change in PLA. Additionally, the posttraining distance covered in the 6-minute walking test was significantly extended for EXP (62.5±37.7 m gain; 𝑃<0.01), but not for PLA. A positive association was observed between the change (%) of performance gain in the 6-minute walking test and body mass index (𝑟=0.736; 𝑃<0.05) for EXP. Conclusion. The present study suggests that IMT provides a practical, minimally intrusive intervention to significantly augment both inspiratory muscle performance and walking distance covered by overweight and obese adults in a clinically relevant 6-minute walk test. This indicates that IMT may provide a useful priming (preparatory) strategy prior to entry in a physical training programme for overweight and obese adults. |
| format | Article |
| id | doaj-art-d8fa7158ec1846019c20a9b935ce07e0 |
| institution | Kabale University |
| issn | 2090-0708 2090-0716 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Obesity |
| spelling | doaj-art-d8fa7158ec1846019c20a9b935ce07e02025-02-03T01:02:27ZengWileyJournal of Obesity2090-07082090-07162012-01-01201210.1155/2012/918202918202Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled TrialA. M. Edwards0G. P. Maguire1D. Graham2V. Boland3G. Richardson4Institute of Sport and Exercise Science, James Cook University, Cairns, Sydney, QLD 4870, AustraliaSchool of Medicine and Dentistry, James Cook University, Cairns, Sydney, QLD 4870, AustraliaDepartment of Psychology, James Cook University, Cairns, QLD 4870, AustraliaDepartment of Psychology, James Cook University, Cairns, QLD 4870, AustraliaDepartment of Psychology, James Cook University, Cairns, QLD 4870, AustraliaObjective. To examine whether a programme of inspiratory muscle training (IMT) improves accumulative distance of self-paced walking in overweight and obese adults. Methods. A total of 15 overweight and obese adults were randomized into experimental (EXP: 𝑛=8) and placebo (PLA: 𝑛=7) groups. Lung function, inspiratory muscle performance, 6-minute walking test, and predicted ̇VO2 max were assessed prior to and following the 4-week IMT intervention. Both groups performed 30 inspiratory breaths, twice daily using a proprietary inspiratory resistance device set to 55% of baseline maximal effort (EXP), or performing the same inspiratory training procedure at the minimum resistive setting (PLA). Results. Lung function was unchanged in both groups after-training; however inspiratory muscle strength was significantly improved in EXP (19±25.2 cm H2O gain; 𝑃<0.01) but did not significantly change in PLA. Additionally, the posttraining distance covered in the 6-minute walking test was significantly extended for EXP (62.5±37.7 m gain; 𝑃<0.01), but not for PLA. A positive association was observed between the change (%) of performance gain in the 6-minute walking test and body mass index (𝑟=0.736; 𝑃<0.05) for EXP. Conclusion. The present study suggests that IMT provides a practical, minimally intrusive intervention to significantly augment both inspiratory muscle performance and walking distance covered by overweight and obese adults in a clinically relevant 6-minute walk test. This indicates that IMT may provide a useful priming (preparatory) strategy prior to entry in a physical training programme for overweight and obese adults.http://dx.doi.org/10.1155/2012/918202 |
| spellingShingle | A. M. Edwards G. P. Maguire D. Graham V. Boland G. Richardson Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled Trial Journal of Obesity |
| title | Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled Trial |
| title_full | Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled Trial |
| title_fullStr | Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled Trial |
| title_full_unstemmed | Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled Trial |
| title_short | Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults: A Randomised Controlled Trial |
| title_sort | four weeks of inspiratory muscle training improves self paced walking performance in overweight and obese adults a randomised controlled trial |
| url | http://dx.doi.org/10.1155/2012/918202 |
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