scholarly journals Role of skin blood flow and sweating rate in exercise thermoregulation after bed rest

2002 ◽  
Vol 92 (5) ◽  
pp. 2026-2034 ◽  
Author(s):  
Stuart M. C. Lee ◽  
W. Jon Williams ◽  
Suzanne M. Schneider
Keyword(s):  
Blood Flow ◽  
Skin Blood Flow ◽  
Bed Rest ◽  
Peak Exercise ◽  
Sweating Rate ◽  
Sweat Loss ◽  
Delayed Onset ◽  
Percent Increase ◽  
Exercise Thermoregulation

Two potential mechanisms, reduced skin blood flow (SBF) and sweating rate (SR), may be responsible for elevated intestinal temperature (Tin) during exercise after bed rest and spaceflight. Seven men underwent 13 days of 6° head-down bed rest. Pre- and post-bed rest, subjects completed supine submaximal cycle ergometry (20 min at 40% and 20 min at 65% of pre-bed rest supine peak exercise capacity) in a thermoneutral room. After bed rest, Tin was elevated at rest (+0.31 ± 0.12°C) and at the end of exercise (+0.33 ± 0.07°C). Percent increase in SBF during exercise was less after bed rest (211 ± 53 vs. 96 ± 31%; P ≤ 0.05), SBF/Tin threshold was greater (37.09 ± 0.16 vs. 37.33 ± 0.13°C; P ≤ 0.05), and slope of SBF/Tin tended to be reduced (536 ± 184 vs. 201 ± 46%/°C; P = 0.08). SR/Tin threshold was delayed (37.06 ± 0.11 vs. 37.34 ± 0.06°C; P ≤ 0.05), but the slope of SR/Tin(3.45 ± 1.22 vs. 2.58 ± 0.71 mg · min−1 · cm−2 · °C−1) and total sweat loss (0.42 ± 0.06 vs. 0.44 ± 0.08 kg) were not changed. The higher resting and exercise Tin and delayed onset of SBF and SR suggest a centrally mediated elevation in the thermoregulatory set point during bed rest exposure.

scholarly journals Higher Sweating Rate and Skin Blood Flow during the Luteal Phase of the Menstrual Cycle

2014 ◽  
Vol 234 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Haneul Lee ◽  
Jerrold Petrofsky ◽  
Nirali Shah ◽  
Abdulaziz Awali ◽  
Karan Shah ◽  
...  
Keyword(s):  
Blood Flow ◽  
Menstrual Cycle ◽  
Skin Blood Flow ◽  
Luteal Phase ◽  
Sweating Rate

The Role of Nitric Oxide in Skin Blood Flow Increases Due to Vibration in Healthy Adults and Adults with Type 2 Diabetes

2009 ◽  
Vol 11 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Colleen Maloney-Hinds ◽  
Jerrold S. Petrofsky ◽  
Grenith Zimmerman ◽  
David A. Hessinger
Keyword(s):  
Nitric Oxide ◽  
Type 2 Diabetes ◽  
Blood Flow ◽  
Skin Blood Flow ◽  
Healthy Adults

Reflex control of skin blood flow by skin temperature: role of core temperature

1979 ◽  
Vol 47 (6) ◽  
pp. 1188-1193 ◽  
Author(s):  
J. M. Johnson ◽  
M. K. Park
Keyword(s):  
Blood Flow ◽  
Skin Temperature ◽  
Skin Blood Flow ◽  
Work Load ◽  
Reflex Response ◽  
Esophageal Temperature ◽  
Internal Temperature ◽  
Reflex Control ◽  
Different Levels

Two protocols were used to discover whether the reflex response in skin blood flow (SkBF) to rising skin temperature (Tsk) was dependent on the level of internal temperature. Part I. In five subjects, Tsk (controlled with water-perfused suits) was raised to 37 degrees C prior to, between 2 and 5 min, or between 10 and 17 min of exercise. The associated SkBF elevation per degree rise in Tsk averaged 0.20, 1.28, and 1.75 ml/100 ml . min, respectively. When Tsk was raised during the first 5 min of exercise, esophageal temperature (Tes) rose markedly (0.39 degrees C), but transiently fell if Tsk was raised after 10 min of exercise. Part II. In six subjects, different work loads were used to develop different levels of internal temperature. Tsk was elevated to 37 degrees C after 10--15 min at light (50--75 W) or moderate (100--150 W) work loads. At the heavier work load (and higher Tes), the rise in forearm SkBF per degree rise in Tsk averaged 2.33 +/- 0.38 (SE) times that observed at the light work load. These data strongly suggest that the reflex response of SkBF to rising Tsk is dependent on the level of internal temperature.

RELATIONSHIPS BETWEEN SWEATING RATE AND SKIN BLOOD FLOW IN PREPUBERTAL BOYS AND YOUNG MEN 780

1997 ◽  
Vol 29 (Supplement) ◽  
pp. 135
Author(s):  
Y. Inoue ◽  
M. Shibasaki ◽  
N. Kondo ◽  
K. Hirata ◽  
H. Ueda
Keyword(s):  
Blood Flow ◽  
Skin Blood Flow ◽  
Young Men ◽  
Sweating Rate ◽  
Prepubertal Boys

scholarly journals Correction to: The skin blood flow response to exercise in boys and men and the role of nitric oxide

2020 ◽  
Vol 120 (4) ◽  
pp. 763-764
Author(s):  
Alexandra Woloschuk ◽  
Gary J. Hodges ◽  
Raffaele J. Massarotto ◽  
Panagiota Klentrou ◽  
Bareket Falk
Keyword(s):  
Nitric Oxide ◽  
Blood Flow ◽  
Skin Blood Flow ◽  
Blood Flow Response ◽  
Flow Response ◽  
Response To Exercise

scholarly journals Role of α 2C -adrenoceptors in the reduction of skin blood flow induced by local cooling in mice

2007 ◽  
Vol 152 (1) ◽  
pp. 91-100 ◽  
Author(s):  
M Honda ◽  
M Suzuki ◽  
K Nakayama ◽  
T Ishikawa
Keyword(s):  
Blood Flow ◽  
Skin Blood Flow ◽  
Local Cooling

Relationship between skin blood flow and sweating rate, and age related regional differences

1998 ◽  
Vol 79 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Yoshimitsu Inoue ◽  
Manabu Shibasaki ◽  
Kozo Hirata ◽  
Tsutomu Araki
Keyword(s):  
Blood Flow ◽  
Skin Blood Flow ◽  
Regional Differences ◽  
Sweating Rate ◽  
Age Related

Haemodynamic role of vasopressin released during Finnish sauna

1986 ◽  
Vol 112 (2) ◽  
pp. 166-171 ◽  
Author(s):  
J. P. Bussien ◽  
R. C. Gaillard ◽  
J. Nussberger ◽  
B. Waeber ◽  
K. G. Hofbauer ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Blood Flow ◽  
Skin Blood Flow ◽  
Plasma Osmolality ◽  
Plasma Renin ◽  
Plasma Norepinephrine ◽  
Hot Air ◽  
Simultaneous Change

Abstract. The effect of vasopressin released during Finnish sauna on blood pressure, heart rate and skin blood flow was investigated in 12 healthy volunteers. Exposure to the hot air decrease body weight by 0.6 to 1.25 kg (mean = 0.8 kg, P < 0.001). One hour after the end of the sauna sessions, plasma vasopressin was higher (1.7 ± 0.2 pg/ml, P < 0.01 mean ± sem) than before the sauna (1.0 ± 0.1 pg/ml). No simultaneous change in plasma osmolality, plasma renin activity, plasma norepinephrine, epinephrine, cortisol, aldosterone, beta-endorphin and metenkephalin levels was observed. Despite the slight sauna-induced elevation in circulating vasopressin, intravenous injection of the specific vascular vasopressin antagonist d(CH2)5Tyr-(Me)AVP (5 μg/kg) 1 h after the sauna had no effect on blood pressure, heart rate or skin blood flow. These data suggest that vasopressin released into the circulation during a sauna session reaches concentrations which are not high enough to interfere directly with vascular tone.

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