The effect of cigarette smoking history on autonomic and cerebral oxygenation responses to an acute exercise bout in smokers.

Hartmann, TE; Marino, FE; Duffield, R

The effect of cigarette smoking history on autonomic and cerebral oxygenation responses to an acute exercise bout in smokers.

Hartmann, TE Marino, FE Duffield, R

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: Physiological reports, 2020, 8, (19)
Issue Date:: 2020-10

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Field	Value	Language
dc.contributor.author	Hartmann, TE
dc.contributor.author	Marino, FE
dc.contributor.author	Duffield, R https://orcid.org/0000-0002-5641-1314
dc.date.accessioned	2020-10-21T03:27:40Z
dc.date.available	2020-09-03
dc.date.available	2020-10-21T03:27:40Z
dc.date.issued	2020-10
dc.identifier.citation	Physiological reports, 2020, 8, (19)
dc.identifier.issn	2051-817X
dc.identifier.issn	2051-817X
dc.identifier.uri	http://hdl.handle.net/10453/143422
dc.description.abstract	The extent of smoking history is causally linked to adverse cerebro- and cardiovascular health outcomes, while conversely, exercise decreases this risk and associated mortality. However, the acute cerebro- and cardiovascular responses to exercise in smokers are unknown, and may provide insight to understand chronic adaptation. This study examined the acute heart rate (HR) variability (R-R intervals) and cerebral oxygenation responses to exercise in smokers compared to nonsmokers. Fifty-four males classified as smokers (n = 27) or nonsmokers (n = 27) were allocated into either younger (YSM, YNS) or middle-aged groups (MSM, MNS). Participants completed 40 min of stationary cycle ergometry at 50% of VO2peak. Cerebral oxygenation (near-infrared spectroscopy) and autonomic function (HR variability) were collected before, during, and after exercise at 0, 30 min, 1, and 4 hr postexercise. The nonsmoker cohort (MNS and YNS) demonstrated higher values for the standard deviation (SD) of the R-R interval (SDNN) and the root mean squared of the SD at 1 and 4 hr postexercise versus smokers (p < .05). The low frequency (LF) band in YSM was lower than in YNS at 1 hr (p < .05). However, LF and high frequency were higher for MNS compared to MSM at 1 hr (p < .05). Oxygenated hemoglobin during and following exercise were elevated in NS with values for MSM lower than YSM (p < .05). The findings show smoking history can affect cerebral oxygenation during and following an acute exercise bout. Further, following exercise, smokers may exhibit a delay or inhibition in parasympathetic activity.
dc.format	Print
dc.language	eng
dc.publisher	Wiley
dc.relation.ispartof	Physiological reports
dc.relation.isbasedon	10.14814/phy2.14596
dc.rights	This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0606 Physiology, 1103 Clinical Sciences, 1116 Medical Physiology
dc.title	The effect of cigarette smoking history on autonomic and cerebral oxygenation responses to an acute exercise bout in smokers.
dc.type	Journal Article
utslib.citation.volume	8
utslib.location.activity	United States
utslib.for	0606 Physiology
utslib.for	1103 Clinical Sciences
utslib.for	1116 Medical Physiology
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Strength - CHSP - Health Services and Practice
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2020-10-21T03:27:25Z
pubs.issue	19
pubs.publication-status	Published
pubs.volume	8
utslib.citation.issue	19

Abstract:

The extent of smoking history is causally linked to adverse cerebro- and cardiovascular health outcomes, while conversely, exercise decreases this risk and associated mortality. However, the acute cerebro- and cardiovascular responses to exercise in smokers are unknown, and may provide insight to understand chronic adaptation. This study examined the acute heart rate (HR) variability (R-R intervals) and cerebral oxygenation responses to exercise in smokers compared to nonsmokers. Fifty-four males classified as smokers (n = 27) or nonsmokers (n = 27) were allocated into either younger (YSM, YNS) or middle-aged groups (MSM, MNS). Participants completed 40 min of stationary cycle ergometry at 50% of VO2peak. Cerebral oxygenation (near-infrared spectroscopy) and autonomic function (HR variability) were collected before, during, and after exercise at 0, 30 min, 1, and 4 hr postexercise. The nonsmoker cohort (MNS and YNS) demonstrated higher values for the standard deviation (SD) of the R-R interval (SDNN) and the root mean squared of the SD at 1 and 4 hr postexercise versus smokers (p < .05). The low frequency (LF) band in YSM was lower than in YNS at 1 hr (p < .05). However, LF and high frequency were higher for MNS compared to MSM at 1 hr (p < .05). Oxygenated hemoglobin during and following exercise were elevated in NS with values for MSM lower than YSM (p < .05). The findings show smoking history can affect cerebral oxygenation during and following an acute exercise bout. Further, following exercise, smokers may exhibit a delay or inhibition in parasympathetic activity.

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http://hdl.handle.net/10453/143422