The sauna: killer or healer?

Hawkins, C

doi:10.1136/bmj.295.6605.1015-a

Cited by 13 publications

(15 citation statements)

References 4 publications

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“…The average BML [kg] in our research was similar to that reported in men in other studies [23,33,42], but lower than that noted by Pilch et al [32]. The fact that women lost less body mass [kg] could be attributed to the fact that females are generally characterized by lower levels of total body water (48 ± 6%) [44] and a higher content of adipose tissue, which reduces sweating, evaporation and BML [kg] [12,14]. Women also require a greater increase in body temperature before they begin to sweat.…”

Section: Discussionsupporting

confidence: 73%

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Sauna-induced body mass loss in physically inactive young women and men

Podstawski

Boraczyński

et al. 2016

Biomedical Human Kinetics

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SummaryStudy aim: The aim of this study was to evaluate the relationship between basic somatic features (body mass and height) and body mass loss in physically inactive young women and men exposed to thermal stress in a dry sauna. Materials and methods:The research was conducted in 2015 on 685 first-year full-time students (333 women, 352 men), aged 19-20 years old. Nude body mass was measured after the students dried off before and after using the sauna.Results: An analysis of regression equations indicated that an increase in the body mass of women and men leads to a significant increase in sauna-induced body mass loss. On the other hand, body mass loss decreased with an increase in height in women and men, but to a smaller extent. From among the tested somatic features, body height and body mass, body mass had a decisive influence on body mass loss. Body height had a minimal and statistically non-significant impact on body mass loss. Conclusions:The results of this study indicate that heavier individuals have an increased risk of dehydration and hyperthermia. Therefore, they should pay close attention to replenishing fluids lost in the sauna. The determination of body mass loss values after a visit to a dry sauna has practical significance because it supports the estimation of the fluid volume required for the maintenance of correct water balance.

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Section: Discussionsupporting

confidence: 73%

“…In several studies, the average body water loss during a standard sauna visit was estimated at 400-600 g [12,14]. Similar BWL values were observed by Pilch et al [33].…”

Section: Discussionsupporting

confidence: 69%

Sauna-induced body mass loss in physically inactive young women and men

Podstawski

Boraczyński

et al. 2016

Biomedical Human Kinetics

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“…Various studies have described the influence of sauna bathing on the cardiovascular system [1][2][3][4][5], the autonom ic nervous system [6], the endocrine system [6, 7|, and lung function [8][9][10][11]. With regard to pulmonary per formance.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Sauna on Diffusing Capacity, Pulmonary Function and Cardiac Output in Healthy Subjects

Kiss¹,

Popp²,

Wagner³

et al. 1994

Respiration

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The present study examined possible short-term effects of the heat stress during sauna bathing on gas exchange, especially in correlation with changes in cardiac output. The results obtained are as follows: (1) The heat stress of sauna bathing caused a slight but not significant increase in diffusion capacity (p = 0.239) and no change in other pulmonary function parameters. (2) Cardiac output and cardiac index increased slightly but not significantly (p = 0.2455 and p = 0.2719). We conclude that heat stress in sauna neither influences gas exchange nor does it cause a significant increase in cardiac output.

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“…A subjective experience of relaxation and well-being is often reported after thermal bathing, whatever the characteristics [1,3]. After 1 h of spa bathing at 40°C, the reduced self-reported stress has been found to be associated with a decrease in salivary cortisol and chromogranin A, that are considered physiological stress markers [8].…”

Section: Introductionmentioning

confidence: 96%

“…Thermal bathing is an ancient tradition in some countries as a standard health activity: sauna in Finland, steam bath in Turkey, hot water bath in Japan are very popular practices to relax and recover from both physical and mental fatigue [1][2][3][4]. These treatments are well tolerated by healthy people and have been documented to be safe also for most patients, including chronic heart failure and hypertensive subjects [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effects of spa treatment on cardiac autonomic control at rest in healthy subjects

Corsini¹,

Capogrosso

Perini

2015

Sport Sci Health

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Purpose Heart rate variability (HRV) was analyzed after a spa-course to test the hypothesis that cardiac autonomic modulation can reflect the feeling of relaxation and wellbeing induced by the treatment. Methods Twenty healthy males were administered a spacourse, consisting in classic sauna (15 min), steam bath (10 min), and soft sauna (10 min), each of them followed by a cooling-off and a rest period. Heart rate (HR) and blood pressure (BP) were measured at rest in supine position before and after the treatment. HRV was analyzed in time and frequency domains and by Poincaré plot. Results After the treatment, systolic and diastolic BPs were decreased by about 13 and 6 mmHg, respectively (p \ 0.05 vs. before), while HR was unchanged (55 ± 7 b/ min). HRV time domain and Poincaré parameters were significantly higher after than before the spa-course: SDNN, rMSSD, SD1 and SD2 increased by 31-35 %, NN50 and pNN50 by 64 %. The ratio SD1/SD2 was 0.6 ± 0.1 in both conditions. No modification was found in normalized power of spectral component and in their ratio (LF/HF = 1.3 ± 1.1, overall mean). Conclusions The increase in HRV with no change in markers of sympatho-vagal interaction observed after the spa-course would suggest an enhanced vagal modulation of HR, possibly reflecting the relaxing effect of the treatment.HRV analysis could be a useful tool to monitor changes in individual psychophysiological condition.

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The sauna: killer or healer?

Cited by 13 publications

References 4 publications

Sauna-induced body mass loss in physically inactive young women and men

Sauna-induced body mass loss in physically inactive young women and men

Effects of the Sauna on Diffusing Capacity, Pulmonary Function and Cardiac Output in Healthy Subjects

Effects of spa treatment on cardiac autonomic control at rest in healthy subjects

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