Premium
Breathing patterns during progressive incremental cycle and treadmill exercise are different
Author(s) -
Kalsås Knud,
Thorsen Einar
Publication year - 2009
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/j.1475-097x.2009.00874.x
Subject(s) - medicine , cycling , treadmill , respiratory minute volume , ventilation (architecture) , incremental exercise , tidal volume , cycle ergometer , heart rate , cardiology , respiratory rate , physical therapy , respiratory system , blood pressure , mechanical engineering , archaeology , engineering , history
Summary Perceived breathlessness at comparable minute ventilation ( V E ) is higher with cycling than with running. Different use of the upper extremities and chest wall may influence the breathing pattern. It was hypothetized that the relationship between tidal volume ( V T ) and V E throughout progressive incremental exercise is different with the two modes of exercise. Twelve well trained subjects (seven men) 20–25 years had incremental maximal exercise tests on a treadmill and a cycle ergometer on different days in random order. Heart rate, respiratory gases, V E and V T were measured on a computerized exercise testing system, and data were averaged over 20 s periods. The V E − V T relationship was characterized by maximum V T , V T at a V E of 30 l min −1 ( V T30 ), the Hey plot and by a least squares quadratic regression model. The increase in V T by V E was steeper and V T30 was higher with cycling compared to running. V Tmax was not different, but was achieved at a lower V E with cycling. Breathing strategies are different with running and cycling in young well trained subjects, and exercise mode must be accounted for in normative studies of breathing pattern.