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dc.contributor.authorBeckett-Brown, Nicholas-
dc.description.abstractThis study investigated oxygen kinetics and blood flow in response to core and muscle cooling at the onset of moderate exercise. Eight males performed two 3-min cycling bouts at moderate intensity (80% of the first ventilatory threshold) with (leg cooling; LC), and without (thermoneutral; TN) cooling of the vastus laterals (VL) muscle by 6 °C, and when core temperature was also decreased (whole-body cooling; WBC) by 1 °C. Muscle blood flow, and muscle (VO2m) oxygen uptake, and kinetics, as well as cardiovascular hemodynamics kinetics, were assessed. VO2 was higher in WBC (+1.96 mL kg -min', p = 0.023). Despite central (reduced cardiac output, heart rate pH, PO, SO2, and increased VO20 whole-body A-VO,Diff, PCO,) and local changes (decreased muscle blood flow and increased local-leg A-VO,Diff) induced by core and muscle cooling, oxygen and cardiovascular hemodynamics kinetics remained unaltered. This study demonstrated that local muscle cooling by 6 °C and core cooling by 1 °C do not influence local muscle or pulmonary oxygen kinetics during moderate exercise. Whether muscle priming, antagonist muscle activity, exercise intensity, cooling intensity or modality influenced the lower oxidative capacity of cooled muscles on kinetics remains unclear.en_US
dc.subjectMuscle coolingen_US
dc.subjectcore coolingen_US
dc.subjectoxygen kineticsen_US
dc.subjectmoderate exerciseen_US
dc.subjectnear-infrared spectroscopyen_US
dc.titleThe influence of local and whole-body cooling on pulmonary and muscle oxygen uptake kinetics during moderate exerciseen_US
dc.description.degreeMaster of Human Kinetics (MHK)en_US
dc.publisher.grantorLaurentian University of Sudburyen_US
Appears in Collections:Human Kinetics - Master's Theses

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