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Objective determination of fatigue development following sun exposure using Advanced Trail Making Test.

Abstract：

:Sun exposure during leisure activity evokes fatigue. We employed the Advanced Trail Making Test (ATMT), a recently developed objective method of evaluating brain function performance used to measure mental fatigue, for objective determination of fatigue development caused by solar exposure to the human body. First, a survey of consumer awareness was performed, and fatigue development from solar exposure was generally recognized in both summer and spring. In the field test, 15 males (26-41 years old) received sun exposure equivalent to 100 kJ m(-2) of ultraviolet radiation three to four times each day for 3 days, during which the subjects wore a short sleeve shirt and a short pant, and covered their head with a towel. A significant increase in scores for subjective sense of fatigue was observed in the evening of all 3 days following sun exposure and on the fourth day, which had no exposure, as well as in the morning of the third and fourth days, as compared with those periods during the control week, which did not have experimental solar exposure. ATMT showed a significant increase in average value in the evening of the first and second days following sun exposure, as well as in the morning of the third and fourth days. In addition, increases in body temperature and heart rate were observed during the exposure periods. The results of multiple regression analysis of subjective feelings showed that fatigue caused by solar exposure was qualitatively different from that in the control week. These results suggest that brain function performance declined following solar exposure as did fatigue development. ATMT results may be useful for quantitative and objective evaluation of mental fatigue caused by sun exposure, along with development of sun care products for the prevention of solar-caused fatigue.

journal_name

Int J Cosmet Sci

journal_title

International journal of cosmetic science

authors

Horikoshi T,Matsue K,Takahashi T,Ishii H,Yamada K,Hayashi S,Yabune M,Murakami M,Kajimoto O

doi

10.1111/j.0142-5463.2004.00200.x

subject

Has Abstract

pub_date

2004-02-01 00:00:00

pages

9-17

issue

eissn

0142-5463

issn

1468-2494

pii

ICS200

journal_volume

pub_type

杂志文章

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Objective determination of fatigue development following sun exposure using Advanced Trail Making Test.