Effect of Handgrip Training in Extreme Heat on the Development of Handgrip Maximal Isometric Strength among Young Males

Ignacio Bartolomé, Jesús Siquier-Coll, Mario Pérez-Quintero, María Concepción Robles-Gil, Diego Muñoz and Marcos Maynar-Mariño
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Ignacio Bartolomé: Department of Physiology, School of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
Jesús Siquier-Coll: Movement, Brain and Health Research Group (MOBhE), Center of Higher Education Alberta Giménez, Comillas Pontifical University, 07013 Palma de Mallorca, Spain
Mario Pérez-Quintero: Department of Physiology, School of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
María Concepción Robles-Gil: Department of Didactics of Musical, Plastic and Corporal Expression, School of Teacher Training, University of Extremadura, 10003 Cáceres, Spain
Diego Muñoz: Department of Didactics of Musical, Plastic and Corporal Expression, School of Teacher Training, University of Extremadura, 10003 Cáceres, Spain
Marcos Maynar-Mariño: Department of Physiology, School of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain

IJERPH, 2021, vol. 18, issue 10, 1-15

Abstract: The aim of this study was to evaluate the acute and adaptive effects of passive extreme heat (100 ± 3 °C) exposition in combination with a strength training protocol on maximal isometric handgrip strength. Fifty-four untrained male university students participated in this investigation. Twenty-nine formed the control group (NG) and 25 the heat-exposed group (HG). All the participants performed a 3-week isotonic handgrip strength training program twice a week with a training volume of 10 series of 10 repetitions with 45-s rest between series, per session. All the subjects only trained their right hand, leaving their left hand untrained. HG performed the same training protocol in hot (100 ± 3 °C) conditions in a dry sauna. Maximal isometric handgrip strength was evaluated each training day before and after the session. NG participants did not experience any modifications in either hand by the end of the study while HG increased maximal strength values in both hands ( p < 0.05), decreased the difference between hands ( p < 0.05), and recorded higher values than the controls in the trained ( p < 0.05) and untrained ( p < 0.01) hands after the intervention period. These changes were not accompanied by any modification in body composition in either group. The performance of a unilateral isotonic handgrip strength program in hot conditions during the three weeks induced an increase in maximal isometric handgrip strength in both hands without modifications to bodyweight or absolute body composition.

Keywords: strength training; isometric strength; heat acclimation; performance; handgrip (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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