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11.
Fisher M Paolone V Rosene J Drury D Van Dyke A Moroney D 《Research quarterly for exercise and sport》1999,70(4):361-368
Five women and 5 men were studied to examine the effects of submaximal exercise on thermoregulatory and hemodynamic variables during recovery in two environments: (a) control (C), 22 degrees C, 33% rh; and (b) hot humid (H), 32 degrees C. The participants exercised on a cycle ergometer at 60% of peak oxygen consumption for 35 min prior to 90 min of seated recovery. Sessions were identical, except for environment. Variables evaluated (p < .05) were: core temperature (TR), mean skin temperature (Ts), sweat rate (SR), heart rate (HR), stroke index (SI), cardiac index (CI), forearm blood flow (FBF), systolic blood pressure (SBP), and diastolic blood pressure (DBP). Men and women exhibited similar patterns of TR, Ts, and SR in both environments. Ts and SR (collapsed means for gender) were higher in the H than in the C. DBP was higher in men than in women throughout recovery in both environments. With combined means for gender, HR was higher in the H than in the C. CI, SI, FBF, and SBP were similar in both environments and returned to baseline within 15 min into recovery. These data suggest that heat dissipation during extended recovery was accomplished with similar contributions of cutaneous vasodilation and sweating in M and F. Furthermore, the moderate exercise level did not influence hemodynamics beyond 15 min of recovery in either environment. 相似文献
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Jennifer Curtin 《国际体育史杂志》2015,32(18):2123-2134
ABSTRACTThe presence of women in and around rugby union in New Zealand remains on the margins of the histories of the game of rugby and the more social and cultural histories that explore rugby’s impact on the formation of a New Zealand national identity. Yet, as this article demonstrates, women have long since engaged with rugby union in ways that may well have assisted in its ascendancy and ultimate claiming of the title of New Zealand’s national game. Through readings of newspapers, magazines, and club histories covering the period from the 1870s through to the Great War a picture emerges: women from both the middle and lower classes of New Zealand society supported the game of rugby as spectators, supporters, and fans. They did so in a manner that was sometimes acceptable but at other times regarded as distinctly inappropriate. In addition, women’s involvement was informal and localized – most obvious at the community level – and it is this feature that helps to explain women’s virtual invisibility in the histories of rugby union in New Zealand. 相似文献
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Category‐based induction is a hallmark of mature cognition; however, little is known about its origins. This study evaluated the hypothesis that category‐based induction is related to semantic development. Computational studies suggest that early on there is little differentiation among concepts, but learning and development lead to increased differentiation based on taxonomic relatedness. This study reports findings from a new task aimed to (a) examine this putative increase in semantic differentiation and (b) test whether individual differences in semantic differentiation are related to category‐based induction in 4‐ to 7‐year‐old children (N = 85). The results provide the first empirical evidence of an age‐related increase in differentiation of representations of animal concepts and suggest that category‐based induction is related to increased semantic differentiation. 相似文献
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