Interactions of physical training and heat acclimation

Gespeichert in:
Bibliographische Detailangaben
Deutscher übersetzter Titel:Wechselbeziehungen zwischen koerperlichem Training und Hitzeanpassung
Autor:McLellan, T.M.; Shephard, R.J.; Aoyagi, Y.
Erschienen in:Sports medicine
Veröffentlicht:23 (1997), 3, S. 173-210, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource Elektronische Ressource (online)
Sprache:Englisch
ISSN:0112-1642, 1179-2035
DOI:10.2165/00007256-199723030-00004
Schlagworte:
Online Zugang:
Erfassungsnummer:PU199709206999
Quelle:BISp

Abstract des Autors

Physical training and heat acclimation are both commonly adopted tactics to improve performance and/or tolerance times when individuals must compete or work in the heat. Potential benefits include: 1) improved aerobic fitness and thus a greater cardiovascular reserve (probably seen mainly after training), 2) a lower resting body temperature that allows greater heat storage (probably seen mainly after acclimation), 3) a decreased energy cost of a given intensity of exercise (seen after acclimation and also as the learning component of training), 4) an enhanced sweating response at a given percentage of maximal effort (probably developed by both treatments), 5) a slower increase in body temperature owing to 3) and/or 4) (seen after both treatments), 6) a reduced cardiovascular stress because of changes in the autonomic nervous system (probably realised mainly by training), expansion of blood volume (seen after both treatments) and/or a decreased peripheral pooling of blood (probably fount after both treatments), and 7) improved subjective tolerance reflecting a decrease in the relative intensity of a given activity (probably seen mainly after training), a reduction in the physiological strain (found after both treatments) and/or habituation to heat-exercise stress (probably developed by both treatments). Factors affecting improvements in physiological and psychological responses to a given set of conditions include: 1) the individual's initial fitness and acclimatisation to heat, 2) age, gender, hydration, sleep deprivation, circadian rhythms and in women the menstrual cycle, 3) use of ergogenic aids such as fluid ingestion, carbohydrate and/or electrolyte replacement and blood doping, 4) event or test conditions such as the mode of exercise, the severity of environmental heat stress and the type of clothing worn, and 5) treatment conditions such as the intensity, duration and frequency of exercise and/or heat exposure, the length of any rest intervals and cumulative depletion of body water and minerals. Verf.-Referat