Trainability of cold induced vasodilatation in fingers and toes

The temperatures of the tip of the middle fingers ( Ts) of nine comfortably warm subjects have been recorded during immersion of all the fingers of one hand in a 27–liter bath containing slowly stirred water at temperatures ranging from 4.6 to 40 C ( Tw). Blood flow ( F = ml/cm2 per min) was estimated from the average Ts for the last 15 min of a 20-min period, Tw and body temperature ( Tb) by using the equation: F = 1,087 x K( Ts – Tw)/ ( Tb – Ts). (K = 0.0134 kcal/cm2 per min per °C.) The increase in F per °C reduction in Tw below 10 C was 0.16 ± 0.077 (P < .05). This value gives a measure of the vasodilatation occasioned by immersion in water below 10 C. The sample regression equation of F on Tw was: F = 4.1 – .16 Tw ± 0.17 (n = 27; range of Tw = 4.6 to 10 C). This method of estimating blood flow at several levels of Tw describes more fully the peripheral circulatory response to cold than methods in which only one level of Tw is used. cold-induced vasodilatation; temperature and finger blood flow Submitted on August 28, 1963

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Cold-induced vasodilatation in the foot is not homogenous or trainable over repeated cold exposure

European Journal of Applied Physiology ◽

10.1007/s00421-007-0566-9 ◽

2007 ◽

Vol 102 (1) ◽

pp. 73-78 ◽

Cited By ~ 20

Author(s):

Luke F. Reynolds ◽

Igor B. Mekjavic ◽

Stephen S. Cheung

Keyword(s):

Cold Exposure ◽

Cold Induced Vasodilatation

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ATTENUATED COLD-INDUCED VASODILATATION AFTER REPEATED COLD-WATER IMMERSION OF THE HAND

Medicine & Science in Sports & Exercise ◽

10.1097/00005768-200305001-01411 ◽

2003 ◽

Vol 35 (Supplement 1) ◽

pp. S254

Author(s):

C L.M. Geurts ◽

G G. Sleivert ◽

M Tingley

Keyword(s):

Cold Water ◽

Water Immersion ◽

Cold Water Immersion ◽

Cold Induced Vasodilatation

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Cold-induced vasodilatation response in the fingers at 4 different water temperatures

Applied Physiology Nutrition and Metabolism ◽

10.1139/apnm-2012-0118 ◽

2013 ◽

Vol 38 (1) ◽

pp. 14-20 ◽

Cited By ~ 11

Author(s):

Igor B. Mekjavic ◽

Uroš Dobnikar ◽

Stylianos N. Kounalakis

Keyword(s):

Young Male ◽

The Other ◽

Subjective Ratings ◽

Thermal Discomfort ◽

Temperature Sensation ◽

Cold Induced Vasodilatation ◽

Finger Skin ◽

Male Subjects ◽

Skin Temperatures ◽

Temperature Amplitude

We evaluated the cold-induced vasodilatation (CIVD) response at 4 different water temperatures. Nine healthy young male subjects immersed their right hands in 35 °C water for 5 min, and immediately thereafter for 30 min in a bath maintained at either 5, 8, 10, or 15 °C. The responses of finger skin temperatures, subjective ratings of thermal comfort and temperature sensation scores were compared between the 4 immersion trials. The number of subjects who exhibited a CIVD response was higher during immersion of the hand in 5 and 8 °C (100%) compared with 10 and 15 °C water (87.5% and 37.5%, respectively). The CIVD temperature amplitude was 4.2 ± 2.6, 3.4 ± 2.0, 2.1 ± 1.6, and 2.8 ± 2.0 °C at 5, 8, 10, and 15 °C trials, respectively; higher in 5 and 8 °C compared with 10 and 15 °C water (p = 0.003). No differences in CIVD were found between the 5 and 8 °C immersions. However, during immersion in 5 °C, subjects felt “uncomfortable” while in the other trials felt “slightly uncomfortable” (p = 0.005). The temperature sensation score was “cold” for 5 °C and “cool” for the other trials, but no statistical differences were observed. Immersion of the hand in 8 °C elicits a CIVD response of similar magnitude as immersion in 5 °C, but with less thermal discomfort.

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