european college of sport science

Saturday, June 27th, 2009
a more realistic maximal Tc is likely to improve the utility of the index. For the latter, a value of 41°C represents a more realistic maximal Tc
for trained and acclimatized distance runners competing in environmental heat (Byrne et al., 2006).
Byrne C, Lee JKW, Chew SAN, Lim CL, and Tan EYM. Continuous thermoregulatory responses to mass-participation distance running in
heat. Med Sci Sports Exerc 38: 803-810, 2006.
Moran DS, Shitzer A, and Pandolf KB. A physiological strain index to evaluate heat stress. Am J Physiol 275: R129-R134, 1998.
EFFECT OF A LOWER BODY COMPRESSION GARMENT ON RUNNING PERFORMANCE IN COLD AND HOT ENVIRON-
MENTS
GOH, S., NOSAKA, K., DASCOMBE, B., LAURSEN, P.
EDITH COWAN UNIVERSITY
Introduction: Lower body compression garments (LBCG) are popular attire worn amongst high performance athletes and the general
sporting population. Only two previous studies have investigated the effect of LBCG on endurance running performance. One study [1]
showed improvement in running economy with LBCG; the other [2] did not find an effect on 10 km running performance. Due to the potential
insulatory and thermal effects that LBCG could have during exercise, LBCG should be examined under different ambient temperatures.
The purpose of the present study was to investigate the effect of LBCG on sub-maximal and maximal running performance in hot
and cold environments.
Methods: Ten male recreational runners (19 - 44 y, VO2max: 56 - 64 ml/kg/min) performed 4 running performance tests (20 minutes at
first ventilatory threshold [VT1], followed immediately by a run to exhaustion at VO2max running speed [v.VO2max]) under 4 different
conditions (10°C with LBCG, 10°C without LBCG, 32°C with LBCG, 32°C without LBCG) in a random order. Changes in oxygen consumption
(VO2), heart rate, rating of perceived exertion (RPE), blood lactate and skin and rectal temperature were compared with (LBCG) and without
LBCG (CONTROL) for each temperature separately using a two-way repeated measures ANOVA. Time to exhaustion (TTE) was compared
between conditions with a paired t-test. Significance was set at p