Acclimatization in Women

X. Li of the Nara Women's University, Japan offers a gender-controlled study in acclimatization in two IJB papers (38:40-43 and 38: 111-115). Acclimatization means that the physiology of the corpus of an organism changes from winter to summer and summer to winter. The two most often used measures of acclimatization are heart rate and rectal temperature. In earlier studies on men the following general rule-of-thumb can be extracted: the acclimatized person has higher core body temperatures and faster heart rates in summer and lower core body temperatures and faster heart rates in winter. The advantages are 1) heat conservation in winter and 2) water conservation in summer when body cooling requires sweating. So Li asks, what role do sartorial choices play in acclimatization? For a summer to winter transition (SON) and a winter to summer transition (MMJ) young girls (X.Li choice of gender description. Here in Virginia they might be young mams) were outfitted with either trousers or knee-length skirts. Rectal temperatures in skirt-wearers rose from 37.3 C to 37.6 C from March to July. Trouser wearing subjects showed an acclimatization of only 0.1 C (37.1 C to 37.2 C). For the passage to winter rectal temperatures of skirted subjects changed from 37.1 C to 36.5 C while in trousered girls rectal temperatures fell only from 37.1 C to 36.9 C. So wearing skirts fosters acclimatization. You conserve heat better in winter and water in summer. Now you can appreciate the fine skirted-Scot Mel Gibson in Braveheart! Studies of short-term or quick acclimatization also point to the importance of the extremities in becoming tolerant of cold in winter and heat in summer. When you leave your appendages free to swing in the breezes your body prepares either for the summer or winter to come. Note: IJB stands for the International Journal of Biometeorology.


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