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Cool-Water Immersion Reduces Postexercise Quadriceps Femoris Muscle Perfusion More Than Cold-Water Immersion
Liverpool John Moores University, Liverpool, United Kingdom; Mahidol University, Nakhon Pathom, Thailand.
Halmstad University, School of Business, Innovation and Sustainability. Turku University Hospital, Turku, Finland; University Of Turku, Turku, Finland.ORCID iD: 0000-0001-8608-4839
Liverpool John Moores University, Liverpool, United Kingdom.
Turku University Hospital, Turku, Finland.
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2022 (English)In: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 54, no 7, p. 1085-1094Article in journal (Refereed) Published
Abstract [en]

Purpose: The muscle perfusion response to postexercise cold-water immersion (CWI) is not well understood. We examined the effects of graded postexercise CWI upon global and regional quadriceps femoris muscle perfusion using positron emission tomography and [15O]H2O. Methods: Using a matched-group design, 30 healthy men performed cycle ergometer exercise at 70% VO2peak to a core body temperature of 38°C, followed by either 10 min of CWI at 8°C, 22°C, or seated rest (control). Quadriceps muscle perfusion; thigh and calf cutaneous vascular conductance; intestinal, muscle, and local skin temperatures; thermal comfort; mean arterial pressure; and heart rate were assessed at preexercise, postexercise, and after CWI. Results: Global quadriceps perfusion was reduced beyond the predefined minimal clinically relevant threshold (0.75 mL per 100 g·min-1) in 22°C water versus control (difference (95% confidence interval (CI)), -2.5 (-3.9 to -1.1) mL per 100 g·min-1). Clinically relevant decreases in muscle perfusion were observed in the rectus femoris (-2.0 (-3.0 to -1.0) mL per 100 g·min-1) and vastus lateralis (-3.5 (-4.9 to -2.0) mL per 100 g·min-1) in 8°C water, and in the vastus lateralis (-3.3 (-4.8 to -1.9) mL per 100 g·min-1) in 22°C water versus control. The mean effects for vastus intermedius and vastus medialis perfusion were not clinically relevant. Clinically relevant decreases in thigh and calf cutaneous vascular conductance were observed in both cooling conditions. Conclusions: The present findings revealed that less noxious CWI (22°C) promoted clinically relevant postexercise decreases in global quadriceps muscle perfusion, whereas noxious cooling (8°C) elicited no effect. © Lippincott Williams & Wilkins

Place, publisher, year, edition, pages
Philadelphia, PA: Lippincott Williams & Wilkins, 2022. Vol. 54, no 7, p. 1085-1094
Keywords [en]
Blood flow, Cooling, Exercise, Recovery
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:hh:diva-48933DOI: 10.1249/MSS.0000000000002898ISI: 000811055000006PubMedID: 35220370Scopus ID: 2-s2.0-85132453422OAI: oai:DiVA.org:hh-48933DiVA, id: diva2:1719798
Note

The data reported here are part of a research program funded by an internal Aspire Zone Foundation Research Grant.

Available from: 2022-12-16 Created: 2022-12-16 Last updated: 2022-12-16Bibliographically approved

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Heinonen, Ilkka

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