Variable effects of respiratory muscle training on cycle exercise performance in men and women

Jordan A Guenette, Andrea M Martens, Anne L Lee, Gradin D Tyler, Jennifer C Richards, Glen E Foster, Darren E R Warburton, A William Sheel
Applied Physiology Nutrition and Metabolism 2006, 31 (2): 159-66
Respiratory muscle training (RMT) has been proposed as an effective means to increase the strength of the inspiratory muscles and improve exercise performance. The purpose of this study was to examine the effect of RMT on cycling time to exhaustion (TTE) and to determine any potential sex effect. We hypothesized that RMT would improve maximal inspiratory pressure (MIP) and TTE to a similar degree in men and women. Males (n = 7; mean (+/- SD) age, 22.1 +/- 1.5 y) and females (n = 8; mean (+/- SD) 24.5 +/- 4.9 y) performed an incremental cycle test to determine maximal oxygen consumption ((.)VO(2) (max)) (day 1), followed by a familiarization TTE (day 2) and baseline TTE (day 3) at 80% maximal work achieved during the ((.)VO(2) (max)) test. Subjects then completed 5 weeks of respiratory muscle training (RMT) (5 d/week, 2 sets of 30 inspirations against 50% MIP). Four training sessions per week were performed at home and the 5th was supervised, during which the threshold load was increased if necessary. Following RMT, subjects completed 2 TTE tests (days 4 and 5). MIP increased in each subject (37% +/- 18%, P < 0.05). There was no difference between men (pre = -100 +/- 20 vs. post = -140 +/- 29 cmH(2)O) and women (pre = -90 +/- 28 vs. post = -117 +/- 28 cmH(2)O). Baseline TTE (male = 301 +/- 122 s; female = 338 +/- 98 s) was shorter in comparison with the best of the 2 TTE-post tests (male = 353 +/- 68 s; female = 416 +/- 116 s; P < 0.01), but not when compared with days 4 or 5 (P > 0.05). RMT increases MIP and may improve exercise performance; however, improvements are variable with no differences between men and women.

Full Text Links

Find Full Text Links for this Article


You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"