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Do physical activity beliefs differ by age and gender? 总被引：1，自引：0，他引：1
Age and gender are consistently related to physical activity (PA), yet theoretical explanation for these associations is scant. The present study compared the mean values and correlations of a population sample, divided by gender and age group, with respect to theory of planned behavior beliefs (behavioral, normative, and control) and PA. Participants were a sample (N=6,739) of adults (M age=49.65, SD=16.04) who completed measures of social and health demographics, theory of planned behavior beliefs, and self-reported PA. Mean analyses identified greater perceived control over PA for seniors than for young and middle-aged adults (N>.025). Belief-behavior correlations, however, were not different across age and gender in 24 of 26 tests (q<.19). Thus, PA beliefs are invariant across age and gender with the exception of mean levels of perceived control, which are lower among younger adults than older adults. Factors such as early parenthood and career demands were considered the likely reasons for differences. Overall, the evidence suggests that adapting theoretical models for specific age groups or based on gender may not be necessary. 相似文献
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基于AT89C51的单片机综合实验设计 总被引：1，自引：0，他引：1
采用AT89C51单片机为核心，通过其串行口接收来自温度传感器的数据以探测室内温度，并由其P1．1口输出信号控制继电器通断，由继电器进一步控制加热器通断，从而构成“室温自动控制系统”并设计成综合实验，使学生对51系列单片机应用系统的开发方法有更为全面的理解。 相似文献
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