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Mawhinney, C, Heinonen, I, Low, DA, Han, C, Jones, H, Kalliokoski, KK, Kirjavainen, A, Kemppainen, J, Di Salvo, V, Lolli, L, Cable, NTIM and Gregson, W (2022) Cool-Water Immersion Reduces Postexercise Quadriceps Femoris Muscle Perfusion More Than Cold-Water Immersion. Medicine and Science in Sports and Exercise, 54 (7). pp. 1085-1094. ISSN 0195-9131
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Coolwater immersion reduces postexercise quadriceps femoris muscle perfusion more than coldwater immersion.pdf - Accepted Version Download (222kB) | Preview |
Abstract
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.
| Item Type: | Article |
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| Additional Information: | This is a non-final version of an article published in final form in Medicine & Science in Sports & Exercise: MAWHINNEY, CHRIS1,2; HEINONEN, ILKKA3,4,5; LOW, DAVID A.1; HAN, CHUNLEI3; JONES, HELEN1; KALLIOKOSKI, KARI K.3; KIRJAVAINEN, ANNA3; KEMPPAINEN, JUKKA3; DI SALVO, VALTER6,7; LOLLI, LORENZO1,7; CABLE, N. TIM8; GREGSON, WARREN1,7. Cool-Water Immersion Reduces Postexercise Quadriceps Femoris Muscle Perfusion More Than Cold-Water Immersion July 2022 - Volume 54 - Issue 7 - p 1085-1094 doi: 10.1249/MSS.0000000000002898 |
| Uncontrolled Keywords: | Humans; Water; Immersion; Perfusion; Male; Quadriceps Muscle; Cold Temperature; Cold Temperature; Humans; Immersion; Male; Perfusion; Quadriceps Muscle; Water; 1106 Human Movement and Sports Sciences; 1116 Medical Physiology; 1117 Public Health and Health Services; Sport Sciences |
| Subjects: | R Medicine > RC Internal medicine > RC1200 Sports Medicine |
| Divisions: | Sport & Exercise Sciences |
| Publisher: | Wolters Kluwer Health |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 15 Aug 2022 09:47 |
| Last Modified: | 28 Feb 2023 00:50 |
| DOI or ID number: | 10.1249/MSS.0000000000002898 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/17386 |
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