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391.
We compared the relationship between predicted VO2 max (ml kg‐1min‐1) and recreational exercise patterns, using secondary data analysis of a comprehensive national survey (18,293 subjects aged 15–69 years). Exercise participation and predicted VO2 max data were available for about 50% of this sample (4933 females, 4738 males). As expected, VO2 max was significantly lower in the females than in the males at any age (P < 0.0001). Age was the most significant predictor of VO2 max (r = ‐0.71 for males, r = ‐0.73 for females). Adjusting the data for the body mass index (BMI) increased this relationship only slightly in the males (R — 0.75) and females (R = 0.79). The simultaneous inclusion of exercise participation data (intensity, duration, energy expenditure) did not increase the predictions meaningfully (R = 0.78 for the males, R = 0.81 for the females). These exercise participation parameters concomitantly accounted for only a very slight amount of the variance of VO2 max in both the females (3.0%) and males (4.5%). To minimize the effects of age, the data were analysed using 5‐year intervals. Again, the exercise participation parameters accounted for only a small part of the variance in VO2 max (< 10%), except in the 15‐ to 19‐year‐old males (24%). These data suggest that VO2 max is not associated with participation in recreational exercise. 相似文献
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393.
Kylie Shaw Allyson Holbrook Jill Scevak Sid Bourke 《The Australian Educational Researcher》2008,35(3):89-109
This paper draws on 159 survey responses of fourth year Education students as they embark on a research project based in their
internship school. The project explores predisposition to research and the level of preparedness to undertake a research project.
The students who met most frequently with their supervisor and showed higher research self-efficacy were also most likely
to want to undertake postgraduate study and reacted positively to good personal support and a feeling of belonging to a research
“community”. Many felt they were “unconnected” to a learning community, and specifically to their supervisor. They were generally
positive about their ability to do the tasks, such as finding and writing up literature, even though they were concerned about
managing the overall commitment. Despite this they were optimistic about completion. Only 5% were sure they would undertake
postgraduate study in the future, and 65% were sure they would not do so. In an environment where there is commitment to promoting
research skills consistent with the needs of a knowledge society and drawing on evidence to inform practice, the findings
not only raise the question of how best to support and give meaning to early research endeavours of preservice teachers, but
also highlights the challenge of achieving this against a high level of disinterest in further tertiary study. 相似文献
394.
Shana Shaw Priya Nihalani Michael Mayrath Daniel H. Robinson 《Educational technology research and development : ETR & D》2012,60(5):807-820
It has long been assumed that graphic organizers (GOs) should be presented to students following text as an organizer, rather than preceding text as an overview. Robinson et al. (Educational Technology Research & Development, 51(4), 25?C41, 2003) challenged this assumption by finding support for GOs as an overview. The present study further examined this issue by having 111 undergraduates view three GOs before (overview) or after (organizer) reading or listening to a narration of a 3,400-word text, followed by measures of retention and transfer. Students who received GOs as organizers transferred knowledge better than those who received GOs as overviews. Whether GOs should also be used as overviews, as prescribed by Robinson et al., is unclear and in need of further investigation. 相似文献
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