ORCID Profile
0000-0002-8893-7126
Current Organisation
University of Turku
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Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 05-2012
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 28-02-2022
DOI: 10.1249/MSS.0000000000002898
Abstract: 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 [ 15 O]H 2 O. Using a matched-group design, 30 healthy men performed cycle ergometer exercise at 70% V̇O 2peak 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. 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. 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.
Publisher: American Physiological Society
Date: 05-2020
DOI: 10.1152/JAPPLPHYSIOL.00833.2019
Abstract: Using positron emission tomography, we report for the first time muscle perfusion heterogeneity in the quadriceps femoris in response to different degrees of cold-water immersion (CWI). Noxious CWI temperatures (8°C) increase perfusion in the deep quadriceps muscle, whereas superficial quadriceps muscle perfusion is reduced in cooler (15°C) water. Therefore, these data have important implications for the selection of CWI approaches used in the treatment of soft tissue injury, while also increasing our understanding of the potential mechanisms underpinning CWI.
Publisher: Springer Science and Business Media LLC
Date: 16-08-2013
Publisher: Springer Science and Business Media LLC
Date: 09-2021
No related grants have been discovered for Kari Kalliokoski.