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Cold-induced vasodilation during single digit immersion in 0°C and 8°C water in men and women.

Tyler CJ, Reeve T, Cheung SS - PLoS ONE (2015)

Bottom Line: Females reported feeling higher thermal sensations in 8°C and lower pain sensations in 0°C and 8°C compared to males.Fewer CIVD responses were observed when using a 4°C (1 (0-3)) threshold to quantify a CIVD wave compared to using a 1°C (2 (0-3)) or 0.5°C (2 (0-3)) amplitude.In conclusion, both 0 and 8 °C can elicit CIVD but 8°C may be more suitable when looking to optimise the number of CIVD waves while minimising participant discomfort.

View Article: PubMed Central - PubMed

Affiliation: Department of Life Sciences, University of Roehampton, London, United Kingdom.

ABSTRACT
The present study compared the thermal responses of the finger to 0 and 8°C water immersion, two commonly used temperatures for cold-induced vasodilation (CIVD) research. On two separate and counterbalanced occasions 15 male and 15 female participants immersed their index finger in 20°C water for 5 min followed by either 0 or 8°C water for 30 min. Skin temperature, cardiovascular and perceptual data were recorded. Secondary analyses were performed between sexes and comparing 0.5, 1 and 4°C CIVD amplitude thresholds. With a 0.5°C threshold, CIVD waves were more prevalent in 8°C (2 (1-3) than in 0°C (1.5 (0-3)), but the amplitude was lower (4.0 ± 2.3 v 9.2 ± 4.0°C). Mean, minimum and maximum finger temperatures were lower in 0°C during the 30 min immersion, and CIVD onset and peak time occurred later in 0°C. Thermal sensation was lower and pain sensation was higher in 0°C. There were no differences between males and females in any of the physiological or CIVD data with the exception of SBP, which was higher in males. Females reported feeling higher thermal sensations in 8°C and lower pain sensations in 0°C and 8°C compared to males. Fewer CIVD responses were observed when using a 4°C (1 (0-3)) threshold to quantify a CIVD wave compared to using a 1°C (2 (0-3)) or 0.5°C (2 (0-3)) amplitude. In conclusion, both 0 and 8 °C can elicit CIVD but 8°C may be more suitable when looking to optimise the number of CIVD waves while minimising participant discomfort. The CIVD response to water immersion does not appear to be influenced by sex. Researchers should consider the amplitude threshold that was used to determine a CIVD wave when interpreting previous data.

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Related in: MedlinePlus

Mean (± SD) finger temperature during immersion and recovery and mean water temperature during immersion.Dashed line = 8°C trial; solid line = 0°C trial. Marker = finger temperature; no marker = water temperature.
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pone.0122592.g001: Mean (± SD) finger temperature during immersion and recovery and mean water temperature during immersion.Dashed line = 8°C trial; solid line = 0°C trial. Marker = finger temperature; no marker = water temperature.

Mentions: Pairwise analyses of the 1st and 2nd CIVD responses revealed that Tmin was lower in 0°C for both waves; Tmax was lower in 0°C during the 1st wave; ΔT was lower in 8°C during the 1st wave; Δtonset was later in 0°C for both waves and Δtpeak was longer in 0°C during the 1st wave (Table 1; analysis column). Eight separate participants had a 3rd CIVD response in 0°C (n = 2) and 8°C (n = 6). There were no interaction effects (p = 0.12–0.74) or differences between sexes (p = 0.07–0.68) for any variable measured during the 1st CIVD wave (p > 0.05). Finger and water temperatures recorded during immersion and recovery are shown in Fig 1.


Cold-induced vasodilation during single digit immersion in 0°C and 8°C water in men and women.

Tyler CJ, Reeve T, Cheung SS - PLoS ONE (2015)

Mean (± SD) finger temperature during immersion and recovery and mean water temperature during immersion.Dashed line = 8°C trial; solid line = 0°C trial. Marker = finger temperature; no marker = water temperature.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4401544&req=5

pone.0122592.g001: Mean (± SD) finger temperature during immersion and recovery and mean water temperature during immersion.Dashed line = 8°C trial; solid line = 0°C trial. Marker = finger temperature; no marker = water temperature.
Mentions: Pairwise analyses of the 1st and 2nd CIVD responses revealed that Tmin was lower in 0°C for both waves; Tmax was lower in 0°C during the 1st wave; ΔT was lower in 8°C during the 1st wave; Δtonset was later in 0°C for both waves and Δtpeak was longer in 0°C during the 1st wave (Table 1; analysis column). Eight separate participants had a 3rd CIVD response in 0°C (n = 2) and 8°C (n = 6). There were no interaction effects (p = 0.12–0.74) or differences between sexes (p = 0.07–0.68) for any variable measured during the 1st CIVD wave (p > 0.05). Finger and water temperatures recorded during immersion and recovery are shown in Fig 1.

Bottom Line: Females reported feeling higher thermal sensations in 8°C and lower pain sensations in 0°C and 8°C compared to males.Fewer CIVD responses were observed when using a 4°C (1 (0-3)) threshold to quantify a CIVD wave compared to using a 1°C (2 (0-3)) or 0.5°C (2 (0-3)) amplitude.In conclusion, both 0 and 8 °C can elicit CIVD but 8°C may be more suitable when looking to optimise the number of CIVD waves while minimising participant discomfort.

View Article: PubMed Central - PubMed

Affiliation: Department of Life Sciences, University of Roehampton, London, United Kingdom.

ABSTRACT
The present study compared the thermal responses of the finger to 0 and 8°C water immersion, two commonly used temperatures for cold-induced vasodilation (CIVD) research. On two separate and counterbalanced occasions 15 male and 15 female participants immersed their index finger in 20°C water for 5 min followed by either 0 or 8°C water for 30 min. Skin temperature, cardiovascular and perceptual data were recorded. Secondary analyses were performed between sexes and comparing 0.5, 1 and 4°C CIVD amplitude thresholds. With a 0.5°C threshold, CIVD waves were more prevalent in 8°C (2 (1-3) than in 0°C (1.5 (0-3)), but the amplitude was lower (4.0 ± 2.3 v 9.2 ± 4.0°C). Mean, minimum and maximum finger temperatures were lower in 0°C during the 30 min immersion, and CIVD onset and peak time occurred later in 0°C. Thermal sensation was lower and pain sensation was higher in 0°C. There were no differences between males and females in any of the physiological or CIVD data with the exception of SBP, which was higher in males. Females reported feeling higher thermal sensations in 8°C and lower pain sensations in 0°C and 8°C compared to males. Fewer CIVD responses were observed when using a 4°C (1 (0-3)) threshold to quantify a CIVD wave compared to using a 1°C (2 (0-3)) or 0.5°C (2 (0-3)) amplitude. In conclusion, both 0 and 8 °C can elicit CIVD but 8°C may be more suitable when looking to optimise the number of CIVD waves while minimising participant discomfort. The CIVD response to water immersion does not appear to be influenced by sex. Researchers should consider the amplitude threshold that was used to determine a CIVD wave when interpreting previous data.

Show MeSH
Related in: MedlinePlus