Effects of Endurance Training on the Breathing Pattern of Professional Cyclists

Alejandro Lucía, Jesús Hoyos, Javier Pardo, José L. Chicharro
2001 The Japanese Journal of Physiology  
It has been well documented that endurance training induces numerous physiological adaptations that involve cardiovascular [1], metabolic [2], hormonal [3], or neurohumoral factors [4]. However, some controversy exists concerning the specific effects of physical conditioning on the respiratory function. Ramonatxo et al. have compared the breathing patterns in athletes of different fitness levels during exercise [5], and other cross-sectional reports have compared athletes to sedentary subjects
more » ... 6] [7] [8] . From some of these data, it appears that physical training causes tidal volume (VT) to increase and breathing frequency ( f b ) to decrease for a given level of minute ventilation (VE). For example, extremely fit oarswomen exhibit a slower, deeper breathing pattern than less-fit oarswomen or sedentary subjects [8]. Some other cross-sectional studies, however, provide no definitive evidence of a change toward a "slower deeper breathing" with endurance training [5, 7] . On the other hand, surprisingly little research has focused on analyzing the effects of training on breathing pattern by using a longitudinal design. In a prospective study, reported no significant effect of shortterm activity specific endurance training (five weekly sessions of 40 min each at ϳ75% VO 2 max ) on the breathing pattern of healthy, nontrained individuals. Comparable findings were obtained by Clark et al. [10] in nontrained subjects. Recently, Miyachi and Katayama reported that the hyperventilatory response of moderately trained subjects during heavy exercise
doi:10.2170/jjphysiol.51.133 pmid:11405905 fatcat:qswez7ywrra5ndgxko7wwpxu2q