Havenith_Gerrett et al. Skin temp FINAL.pdf (561.54 kB)
The influence of local skin temperature on the sweat glands maximum ion reabsorption rate
journal contribution
posted on 2020-12-08, 15:31 authored by Nicola Gerrett, Tatsuro Amano, George HavenithGeorge Havenith, Yoshimitsu Inoue, N. KondoPURPOSE: Changes in mean skin temperature (Tsk) have been shown to modify the maximum rate of sweat ion reabsorption. This study aims to extend this knowledge by investigating if modifications could also be caused by local Tsk. METHODS: The influence of local Tsk on the sweat gland maximum ion reabsorption rates was investigated in ten healthy volunteers (three female and seven male; 20.8 ± 1.2 years, 60.4 ± 7.7 kg, 169.4 ± 10.4 cm) during passive heating (water-perfused suit and lower leg water immersion). In two separate trials, in a randomized order, one forearm was always manipulated to 33 °C (Neutral), whilst the other was manipulated to either 30 °C (Cool) or 36 °C (Warm) using water-perfused patches. Oesophageal temperature (Tes), forearm Tsk, sweat rate (SR), galvanic skin conductance (GSC) and salivary aldosterone concentrations were measured. The sweat gland maximum ion reabsorption rates were identified using the ∆SR threshold for an increasing ∆GSC. RESULTS: Thermal [Tes and body temperature (Tb)] and non-thermal responses (aldosterone) were similar across all conditions (p > 0.05). A temperature-dependent response for the sweat gland maximum ion reabsorption rates was evident between 30 °C (0.18 ± 0.10 mg/cm2/min) and 36 °C (0.28 ± 0.14 mg/cm2/min, d = 0.88, p < 0.05), but not for 33 °C (0.22 ± 0.12 mg/cm2/min), d = 0.44 and d = 0.36, p > 0.05. CONCLUSION: The data indicate that small variations in local Tsk may not affect the sweat gland maximum ion reabsorption rates but when the local Tsk increases by > 6 °C, ion reabsorption rates also increase.
Funding
This study was supported by a Grant-in-Aid for Scientific Research (16H04851 and 17H0253) from the Japan Society for the Promotion of Science from the Ministry of Education, Culture, Sports, Science, and Technology of Japan.
History
Published in
European Journal of Applied PhysiologyVolume
119Pages
685-695Citation
GERRETT, N. ... et al., 2019. The influence of local skin temperature on the sweat glands maximum ion reabsorption rate. European Journal of Applied Physiology, 119: 685–695.Publisher
© SpringerVersion
- AM (Accepted Manuscript)
Publisher statement
This is a post-peer-review, pre-copyedit version of an article published in European Journal of Applied Physiology. The final authenticated version is available online at: https://doi.org/10.1007/s00421-018-04059-5Acceptance date
2018-12-18Publication date
2019-02-07Copyright date
2019ISSN
1439-6319eISSN
1439-6327Publisher version
Language
- en