title: Sauna-induced body mass loss in young sedentary women and men.
abstract: The aim of the study was to evaluate the relationship between body mass index (BMI) and body mass loss (BML) induced by thermal stress in a dry sauna. The study was conducted on a group of 674 sedentary students, 326 women and 348 men aged 19-20. The correlations between BMI scores and BML were determined. The subjects were placed in supine position in a dry sauna for two sessions of 10 minutes each with a 5-minute break. The influence of BMI on the amount of BML in the sauna was determined by nonlinear stepwise regression. The smallest BML was noted in underweight subjects; students with normal weight lost more weight, whereas the greatest BML was reported in overweight and obese subjects. Persons with a high BMI are at higher risk of dehydration, and they should pay particular attention to replenishing fluids during a visit to the sauna. The proposed equations for calculating BML based on a person's BMI can be useful in estimating the amount of fluids that should be replenished by both men and women during a visit to a dry sauna.
authors.affiliation: Department of Physical Education and Sport, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 7, 10-720 Olsztyn, Poland.
authors.forename: Robert
authors.initials: R
authors.lastname: Podstawski
authors.affiliation: Jozef Rusiecki Olsztyn University College, Bydgoska 33, 10-243 Olsztyn, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Boraczyński
authors.affiliation: Jozef Rusiecki Olsztyn University College, Bydgoska 33, 10-243 Olsztyn, Poland.
authors.forename: Michał
authors.initials: M
authors.lastname: Boraczyński
authors.affiliation: Department of Heavy Duty Machines and Research Methodology, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-719 Olsztyn, Poland.
authors.forename: Dariusz
authors.identifier: 0000-0002-3119-9038
authors.initials: D
authors.lastname: Choszcz
authors.affiliation: Department of Heavy Duty Machines and Research Methodology, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-719 Olsztyn, Poland.
authors.forename: Stefan
authors.identifier: 0000-0001-6692-3906
authors.initials: S
authors.lastname: Mańkowski
authors.affiliation: Department of Heavy Duty Machines and Research Methodology, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-719 Olsztyn, Poland.
authors.forename: Piotr
authors.identifier: 0000-0002-4390-788X
authors.initials: P
authors.lastname: Markowski
mesh_terms: D000328:Adult; D015992:Body Mass Index; D001835:Body Weight; D005260:Female; D006801:Humans; D008297:Male; D009765:Obesity / Q000378:metabolism / Q000628:therapy*; D057185:Sedentary Behavior; D029002:Steam Bath; D011795:Surveys and Questionnaires; D015431:Weight Loss / Q000502:physiology*; D055815:Young Adult