Perceptual and cerebro-spinal responses to graded innocuous and noxious stimuli following aerobic exercise

Micalos, P.S., Harris, J., Drinkwater, E.J., Cannon, J. and Marino, F.E. 2015, Perceptual and cerebro-spinal responses to graded innocuous and noxious stimuli following aerobic exercise, Journal of sports medicine and physical fitness, vol. 55, no. 11, pp. 1407-1415.

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Title Perceptual and cerebro-spinal responses to graded innocuous and noxious stimuli following aerobic exercise
Author(s) Micalos, P.S.
Harris, J.
Drinkwater, E.J.ORCID iD for Drinkwater, E.J. orcid.org/0000-0002-9594-9360
Cannon, J.
Marino, F.E.
Journal name Journal of sports medicine and physical fitness
Volume number 55
Issue number 11
Start page 1407
End page 1415
Total pages 9
Publisher Edizioni Minerva Medica
Place of publication Turin, Italy
Publication date 2015-11
ISSN 0022-4707
Summary The aim of this study was to evaluate the effect of aerobic exercise on perceptual and cerebro-spinal responses to graded electrocutaneous stimuli. The design comprised 2 x 30 min of cycling exercise at 30% and 70% of peak oxygen consumption (VO2 peak) on separate occasions in a counter-balanced order in 10 healthy participants. Assessment of nociceptive withdrawal reflex threshold (NWR-T), pain threshold (PT), and somatosensory evoked potentials (SEPs) to graded electrocutaneous stimuli were performed before and after exercise. Perceptual magnitude ratings and SEPs were compared at 30%PT, 60%PT, 100%PT before (Pre), 5 min after (Post1), and 15 min after (Post2) aerobic exercise. There was no difference in the NWR-T and the PT following exercise at 30% and 70% of VO2 peak. ANOVA for the perceptual response within pooled electrocutaneous stimuli show a significant main effect for time (F2,18=5.41, P=0.01) but no difference for exercise intensity (F1,9=0.02, P=0.88). Within-subject contrasts reveal trend differences between 30%PT and 100%PT for Pre-Post1 (P=0.09) and Pre-Post2 (P=0.02). ANOVA for the SEPs peak-to-peak signal amplitude (N1-P1) show significant main effect for time (F2,18=4.04, P=0.04) but no difference for exercise intensity (F1,9=1.83, P=0.21). Pairwise comparisons for time reveal differences between Pre-Post1 (P=0.06) and Pre-Post2 (P=0.01). There was a significant interaction for SEPs N1-P1 between exercise intensity and stimulus intensity (F2,18=3.56, P=0.05). These results indicate that aerobic exercise did not increase the electrocutaneous threshold for pain and the NWR-T. Aerobic exercise attenuated perceptual responses to innocuous stimuli and SEPs N1-P1 response to noxious stimuli.
Language eng
Field of Research 1106 Human Movement And Sports Science
0913 Mechanical Engineering
Socio Economic Objective 929999 Health not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Edizioni Minerva Medica
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083264

Document type: Journal Article
Collections: Faculty of Health
School of Exercise and Nutrition Sciences
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