Universität zu Köln

Zwingmann, Lukas, Below, Tim, Braun, Hans, Wahl, Patrick ORCID: 0000-0001-8682-5916 and Goldmann, Jan-Peter (2022). Consequences of police-related personal protective equipment and physical training status on thermoregulation and exercise energy expenditure. J. Sports Med. Phys. Fit., 62 (9). S. 1137 - 1147. TURIN: EDIZIONI MINERVA MEDICA. ISSN 1827-1928

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Abstract

BACKGROUND: The aim of this study was to examine the impact of personal protective equipment (PPE) on human thermoregulation and its alteration in groups of different training status. METHODS: Forty-five men performed a maximum voluntary contraction test in an upright pull position to determine lower body strength and a graded treadmill test to determine maximum oxygen uptake (V.O2max). Body composition was estimated via bioelectric impedance analysis. According to specific cutoff values, participants were assigned to a group of endurance-trained, strength-trained, endurance- and strength-trained, or untrained individuals. Subsequently, they completed two graded exercise tests until volitional exhaustion, once wearing sports wear (SPW) and once wearing PPE (20.9 kg). Participants were weighed before and afterward to investigate sweat loss and sweat rate. Body temperature was measured continuously from the tympanic membrane. Energy expenditure was derived from breathing gas analysis. RESULTS: Sweat rate was 91% higher in PPE than in SPW but not significantly different between groups (P>0.05). Body temperature was significantly higher in PPE during submaximal (+1.14 +/- 0.45 degrees C) and maximal exercise intensity (0.68 +/- 0.57 degrees C) and was poorely related to (V) over dotO(2)max and body composition. Energy expenditure significantly differed between both garments (+37% in PPE) and groups (P<0.05). Additionally, energy expenditure significantly correlated with body weight (r=0.84 in SPW and r=0.68 in PPE). CONCLUSIONS: Strength training alone does not seem to have any or negligible effects on thermoregulation. Endurance training and weight management might lead to rather small improvements in heat tolerance.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zwingmann, Lukas UNSPECIFIED UNSPECIFIED UNSPECIFIED Below, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED Braun, Hans UNSPECIFIED UNSPECIFIED UNSPECIFIED Wahl, Patrick UNSPECIFIED orcid.org/0000-0001-8682-5916 UNSPECIFIED Goldmann, Jan-Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-662027
DOI:	10.23736/S0022-4707.21.12196-6
Journal or Publication Title:	J. Sports Med. Phys. Fit.
Volume:	62
Number:	9
Page Range:	S. 1137 - 1147
Date:	2022
Publisher:	EDIZIONI MINERVA MEDICA
Place of Publication:	TURIN
ISSN:	1827-1928
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BODY-TEMPERATURE; AEROBIC FITNESS; HEAT TOLERANCE; LOAD CARRIAGE; HOT-WET; WALKING; ACCLIMATION; PERFORMANCE; ADVANTAGES; ABILITY Multiple languages Sport Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66202