Prior maximal exercise decreases pulmonary diffusing capacity during subsequent exercise

J. C. Baldi, M. J. Dacey, M. J. Lee, J. R. Coast

Research output: Contribution to journalArticle

Abstract

Pulmonary diffusion (DLCO) increases during exercise due to greater pulmonary capillary volume (Vc) and membrane diffusing capacity (DM). However, after heavy exercise there is a reduction in resting DLCO. It is unclear whether this post-exercise effect will attenuate the normal increase in DLCO, Vc and DM during subsequent exercise and whether this affects SpO2 (pulse oximeter). DLCO, Vc, DM, cardiac output and SpO2 were measured at rest, moderate (~70% VO2peak) and heavy (~90 VO2peak) exercise in 9 subjects during 2 sessions separated by ~90 min. DLCO, Vc and DM increased during exercise (P<0.05). DLCO (P<0.05) and Vc (P<0.10), but not DM or SpO2 were lower in session 2 compared to the first. Reductions in DLCO and Vc appeared to be smallest during rest (1-4%) and greatest at high-intensity exercise (8-20%), but the interaction was not significant. SpO2 decreased by 4.9% and 5.1% from rest to high-intensity exercise during the first and second exercise bout, but these changes were not different. These data confirm that a bout of high-intensity exercise reduces DLCO and Vc, and may indicate that these changes are exacerbated during subsequent high-intensity exercise. Despite these changes, SpO2 was not affected by previous exercise.

Original languageEnglish (US)
Pages (from-to)982-986
Number of pages5
JournalInternational Journal of Sports Medicine
Volume35
Issue number12
DOIs
StatePublished - Nov 1 2014

Fingerprint

Pulmonary Diffusing Capacity
Lung
Cardiac Output
Pulse
Membranes

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Prior maximal exercise decreases pulmonary diffusing capacity during subsequent exercise. / Baldi, J. C.; Dacey, M. J.; Lee, M. J.; Coast, J. R.

In: International Journal of Sports Medicine, Vol. 35, No. 12, 01.11.2014, p. 982-986.

Research output: Contribution to journalArticle

@article{6d23215176724c28985529fb56160cce,
title = "Prior maximal exercise decreases pulmonary diffusing capacity during subsequent exercise",
abstract = "Pulmonary diffusion (DLCO) increases during exercise due to greater pulmonary capillary volume (Vc) and membrane diffusing capacity (DM). However, after heavy exercise there is a reduction in resting DLCO. It is unclear whether this post-exercise effect will attenuate the normal increase in DLCO, Vc and DM during subsequent exercise and whether this affects SpO2 (pulse oximeter). DLCO, Vc, DM, cardiac output and SpO2 were measured at rest, moderate (~70{\%} VO2peak) and heavy (~90 VO2peak) exercise in 9 subjects during 2 sessions separated by ~90 min. DLCO, Vc and DM increased during exercise (P<0.05). DLCO (P<0.05) and Vc (P<0.10), but not DM or SpO2 were lower in session 2 compared to the first. Reductions in DLCO and Vc appeared to be smallest during rest (1-4{\%}) and greatest at high-intensity exercise (8-20{\%}), but the interaction was not significant. SpO2 decreased by 4.9{\%} and 5.1{\%} from rest to high-intensity exercise during the first and second exercise bout, but these changes were not different. These data confirm that a bout of high-intensity exercise reduces DLCO and Vc, and may indicate that these changes are exacerbated during subsequent high-intensity exercise. Despite these changes, SpO2 was not affected by previous exercise.",
author = "Baldi, {J. C.} and Dacey, {M. J.} and Lee, {M. J.} and Coast, {J. R.}",
year = "2014",
month = "11",
day = "1",
doi = "10.1055/s-0034-1372635",
language = "English (US)",
volume = "35",
pages = "982--986",
journal = "International Journal of Sports Medicine",
issn = "0172-4622",
publisher = "Georg Thieme Verlag",
number = "12",

}

TY - JOUR

T1 - Prior maximal exercise decreases pulmonary diffusing capacity during subsequent exercise

AU - Baldi, J. C.

AU - Dacey, M. J.

AU - Lee, M. J.

AU - Coast, J. R.

PY - 2014/11/1

Y1 - 2014/11/1

N2 - Pulmonary diffusion (DLCO) increases during exercise due to greater pulmonary capillary volume (Vc) and membrane diffusing capacity (DM). However, after heavy exercise there is a reduction in resting DLCO. It is unclear whether this post-exercise effect will attenuate the normal increase in DLCO, Vc and DM during subsequent exercise and whether this affects SpO2 (pulse oximeter). DLCO, Vc, DM, cardiac output and SpO2 were measured at rest, moderate (~70% VO2peak) and heavy (~90 VO2peak) exercise in 9 subjects during 2 sessions separated by ~90 min. DLCO, Vc and DM increased during exercise (P<0.05). DLCO (P<0.05) and Vc (P<0.10), but not DM or SpO2 were lower in session 2 compared to the first. Reductions in DLCO and Vc appeared to be smallest during rest (1-4%) and greatest at high-intensity exercise (8-20%), but the interaction was not significant. SpO2 decreased by 4.9% and 5.1% from rest to high-intensity exercise during the first and second exercise bout, but these changes were not different. These data confirm that a bout of high-intensity exercise reduces DLCO and Vc, and may indicate that these changes are exacerbated during subsequent high-intensity exercise. Despite these changes, SpO2 was not affected by previous exercise.

AB - Pulmonary diffusion (DLCO) increases during exercise due to greater pulmonary capillary volume (Vc) and membrane diffusing capacity (DM). However, after heavy exercise there is a reduction in resting DLCO. It is unclear whether this post-exercise effect will attenuate the normal increase in DLCO, Vc and DM during subsequent exercise and whether this affects SpO2 (pulse oximeter). DLCO, Vc, DM, cardiac output and SpO2 were measured at rest, moderate (~70% VO2peak) and heavy (~90 VO2peak) exercise in 9 subjects during 2 sessions separated by ~90 min. DLCO, Vc and DM increased during exercise (P<0.05). DLCO (P<0.05) and Vc (P<0.10), but not DM or SpO2 were lower in session 2 compared to the first. Reductions in DLCO and Vc appeared to be smallest during rest (1-4%) and greatest at high-intensity exercise (8-20%), but the interaction was not significant. SpO2 decreased by 4.9% and 5.1% from rest to high-intensity exercise during the first and second exercise bout, but these changes were not different. These data confirm that a bout of high-intensity exercise reduces DLCO and Vc, and may indicate that these changes are exacerbated during subsequent high-intensity exercise. Despite these changes, SpO2 was not affected by previous exercise.

UR - http://www.scopus.com/inward/record.url?scp=84931071833&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84931071833&partnerID=8YFLogxK

U2 - 10.1055/s-0034-1372635

DO - 10.1055/s-0034-1372635

M3 - Article

VL - 35

SP - 982

EP - 986

JO - International Journal of Sports Medicine

JF - International Journal of Sports Medicine

SN - 0172-4622

IS - 12

ER -