An explicative model of leisure-time physical activities among church-going African Americans in Indianapolis
详细信息
- 作者：Li ; Kaigang ; Ph.D.
- 学历：Ph.D.
- 年：2010
- 关键词：African-American ; Leisure-time physical activity
- 导师：Seo, Dong-Chul
- 毕业院校：Indiana University
- Department：School of Health, Physical Education and Recreation
- 专业：African American Studies, Black studies, Behavioral psychology, Public health, Recreation
- ISBN：9781109693782
- CBH：3397482
- Country：USA
- 语种：English
- FileSize：2427528
- Pages：208
文摘
This study consisted of three sub-studies. The problem of this study was to (1) examine the relationship between leisure-time physical activity (LTPA) and obesity among African Americans (sub-study #1), (2) construct a valid and reliable instrument based on previous studies (sub-study #2), and (3) develop and test an explicative social-ecological model of LTPA including six contributory factors to LTPA (substudy #3): self-efficacy, self-regulation, social support, perceived physical environment, outcome expectancy, and policy belief.
This study was a cross-sectional non-experimental study using a 96-item questionnaire. A total of 649 African Americans going to churches were recruited from 27 churches in Indianapolis. The instrument was developed and finalized through a process of reviewing literature, expert's review and pilot test. In examining the relationship between LTPA and obesity (sub-study #1), LTPA was classified based on the 2008 Physical Activity Guidelines for Americans (USDHHS, 2008). Logistic regression approach (n=614) was used to examine the relationship between LTPA and obesity with and without controlling for daily physical activity beyond LTPA and/or other correlates. The reliability and validity of six contributory factors to assess LTPA engagement among African Americans (n=569) were examined using item analysis, exploratory factor analysis, and multiple-group confirmatory factor analytic techniques (sub-study #2). Structural equation modeling (n=569) was used to test a social-ecological model of LTPA (sub-study #3).
Main findings of this study were: (1) the data showed an inverse graded relationship between the total volume of LTPA and obesity for African American women, but not for men; (2) all six refined scales were cross-validated by splitting the sample into two halves; and (3) the developed social-ecological model of LTPA fit the data well based on major fit indices.
Main conclusions of this study were: (1) African American women who accumulate a high volume of LTPA (i.e., 300 minutes or more per week) are less likely to be obese; (2) the six refined scales (including corresponding subscales) to measure contributory factors to LTPA among African Americans were shown reliable and valid; and (3) a multilevel approach involving intrapersonal, interpersonal, environmental, and policy factors is recommended in physical activity behavior intervention.
This study was a cross-sectional non-experimental study using a 96-item questionnaire. A total of 649 African Americans going to churches were recruited from 27 churches in Indianapolis. The instrument was developed and finalized through a process of reviewing literature, expert's review and pilot test. In examining the relationship between LTPA and obesity (sub-study #1), LTPA was classified based on the 2008 Physical Activity Guidelines for Americans (USDHHS, 2008). Logistic regression approach (n=614) was used to examine the relationship between LTPA and obesity with and without controlling for daily physical activity beyond LTPA and/or other correlates. The reliability and validity of six contributory factors to assess LTPA engagement among African Americans (n=569) were examined using item analysis, exploratory factor analysis, and multiple-group confirmatory factor analytic techniques (sub-study #2). Structural equation modeling (n=569) was used to test a social-ecological model of LTPA (sub-study #3).
Main findings of this study were: (1) the data showed an inverse graded relationship between the total volume of LTPA and obesity for African American women, but not for men; (2) all six refined scales were cross-validated by splitting the sample into two halves; and (3) the developed social-ecological model of LTPA fit the data well based on major fit indices.
Main conclusions of this study were: (1) African American women who accumulate a high volume of LTPA (i.e., 300 minutes or more per week) are less likely to be obese; (2) the six refined scales (including corresponding subscales) to measure contributory factors to LTPA among African Americans were shown reliable and valid; and (3) a multilevel approach involving intrapersonal, interpersonal, environmental, and policy factors is recommended in physical activity behavior intervention.