Title

Exercise-induced arterial hypoxemia is not different during cycling and running in triathletes

Document Type

Journal Article

Faculty

Computing, Health and Science

School

School of Exercise, Biomedical and Health Science

RAS ID

3672

Comments

Originally published as: Laursen, P. B., Rhodes, E. C., Langill, R. H., Taunton, J. E., & McKenzie, D. C. (2005). Exercise-induced arterial hypoxemia is not different during cycling and running in triathletes. Scandinavian journal of medicine & science in sports, 15(2), 113-117. Original article available here

Abstract

This study examined the effect of running and cycling on exercise-induced arterial hypoxemia (EIAH) in individuals well trained in each modality. Thirteen male triathletes (X+/-SD: age=36+/-5 years, mass=69+/-8 kg, body fat=12+/-1%) performed progressive exercise to exhaustion during cycle ergometry and treadmill running. Gas exchange was determined, while oxyhemoglobin saturation (SaO(2)) was measured with an ear oximeter. At maximal exercise, the respiratory exchange ratio (1.15+/-0.06 vs. 1.10+/-0.05) and the ventilatory equivalent for oxygen uptake (37.6+/-3.8 vs. 34.2+/-2.7) were greater during cycling vs. running (P<0.05). However, there were no differences at maximal exercise in oxygen uptake (64.4+/-3.2 vs. 67.0+/-4.6 mL kg(-1) min(-1)), SaO(2) (93.4+/-2.8% vs. 92.6+/-2.2%), or the ventilatory equivalent for carbon dioxide (V(E)/VCO(2); 33.1+/-3.1 vs. 31.0+/-3.1), during cycling vs. running, respectively. During submaximal exercise, the V(E)/VCO(2) was less for cycling (26.0+/-1.0) compared with running (29.1+/-0.4; P<0.05), but this had no apparent effect on the SaO(2) response. In conclusion, EIAH was not significantly different during cycling and running in athletes who were well trained in both exercise modalities.

DOI

10.1111/j.1600-0838.2004.00391.x

 

Link to publisher version (DOI)

10.1111/j.1600-0838.2004.00391.x