Cable, Tim

Di Salvo, Valter

Gregson, Warren

Han, Chunlei

Heinonen, Ilkka

Jones, Helen

Kalliokoski, Kari

Kemppainen, Jukka

Kirjavainen, Anna

Low, David

Mawhinney, Christopher

Weston, Matthew

We examined the influence of graded cold-water immersion (CWI) on global and regional quadriceps muscle perfusion using positron emission tomography (PET) and [15O]H2O. In thirty healthy males (33±8 yrs; 81±10 kg; 184±5 cm; percentage body fat: 13±5%; V̇O2peak: 47±8 mL·kg-1·min-1) quadriceps perfusion, thigh and calf cutaneous vascular conductance (CVC), intestinal, muscle and local skin temperatures, thermal comfort, mean arterial pressure and heart rate were assessed prior to and following 10-min of CWI at 8°C, 15°C or 22°C. Global quadriceps perfusion did not change beyond a clinically relevant threshold (0.75 mL∙100g∙min-1) in any condition, and was similar between conditions [range of the differences (95% confidence interval [CI]); 0.1 mL∙100g∙min-1 (-0.9 to 1.2 mL∙100g∙min-1) to 0.9 mL∙100g∙min-1 (-0.2 to 1.9 mL∙100g∙min-1)]. Muscle perfusion was greater in vastus intermedius (VI) compared with vastus lateralis (VL) (2.2 mL∙100g∙min-1; 95%CI 1.5 to 3.0 mL∙100g∙min-1) and rectus femoris (RF) (2.2 mL∙100g∙min-1; 1.4 to 2.9 mL∙100g∙min-1). A clinically relevant increase in VI muscle perfusion after immersion at 8°C and a decrease in RF muscle perfusion at 15°C were observed. A clinically relevant increase in perfusion was observed in the VI in 8°C compared with 22°C water (2.3 mL∙100g∙min-1; 1.1 to 3.5 mL∙100g∙min-1). There were no clinically relevant between-condition differences in thigh CVC. Our findings suggest that CWI (8-22°C) does not reduce global quadriceps muscle perfusion to a clinically relevant extent, however, colder-water (8°C) increases deep muscle perfusion and reduces (15°C) superficial muscle (RF) perfusion in the quadriceps muscle

Teeside University's Research Repository

English

Changes in Quadriceps Femoris Muscle Perfusion Following Different Degrees of Cold-Water Immersion:Muscle perfusion and cold-water immersion

Changes in Quadriceps Femoris Muscle Perfusion Following Different Degrees of Cold-Water Immersion:Muscle perfusion and cold-water immersion

Abstract

Similar works

Full text

Available Versions

Teeside University's Research Repository

Teeside University's Research Repository