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Kun Liang

the 2006 and the 2010 Sample Survey on Aged Population in Urban/Rural China (SSAPUR). The two waves of surveys were conducted by the China Research Center on Aging. In 2006, this center selected 20 divisions out of 31 provincial-level administrative divisions from all regions of China, including north

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Byron Lai, Katie Cederberg, Kerri A. Vanderbom, C. Scott Bickel, James H. Rimmer and Robert W. Motl

evidence and interpret the context for which summative findings can be transferred ( Lavis et al., 2003 ). To accurately project research findings beyond the sample of a given study, researchers require an understanding of the various demographic and clinical characteristics of the participants involved in

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Susan Aguiñaga, Diane K. Ehlers, Elizabeth A. Salerno, Jason Fanning, Robert W. Motl and Edward McAuley

the effects of changes in physical activity with decreases in depression and anxiety across the trial. Because the effects of exercise on depression and anxiety are likely to be attenuated in nonclinical samples, we also conducted exploratory analyses examining whether effects of the intervention were

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Junxin Li, Binbin Yang, Miranda Varrasse, Xiaopeng Ji, MaoChun Wu, Manman Li and Kun Li

understanding on the relationship between physical activity and older adults’ well-being. In this study, both leisure-time exercise and nonexercise activities were examined. The present study aimed to describe physical activity and sleep in a sample of community-dwelling older adults in China and to examine the

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Hotaka Maeda, Chris C. Cho, Young Cho and Scott J. Strath

, Lauderdale, & Waite, 2017 ). Drops in PA measurement validity can result in loss of power for statistical analyses and unstable study results. In addition, the loss of sample size is equally concerning for loss of statistical power as well as biasing the study sample to compliant participants. Therefore

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Fatemeh Azadinia, Ismail Ebrahimi-Takamjani, Mojtaba Kamyab, Morteza Asgari and Mohamad Parnianpour

, Winterthur, Switzerland). The force platform data were sampled at a frequency of 100 Hz and filtered with a second-order Butterworth filter with a cutoff frequency of 10 Hz so as to calculate the traditional linear CoP parameters. Nonetheless, filtering was not used for calculating the structural nonlinear

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Ryan S. Garten, Matthew C. Scott, Tiffany M. Zúñiga, Austin C. Hogwood, R. Carson Fralin and Jennifer Weggen

with the probe appropriately positioned to maintain an insonation angle of 60° or less. The sample volume was maximized according to vessel size and was centered within the vessel based on real-time ultrasound visualization. The CFA diameter and mean blood velocity ( V m ) (angle corrected and

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Joshua Woods

analyses would be untenable ( Kalton, 2014 ). Oversampling respondents from small-sport communities is possible but may be impractical or too expensive. Onsite data collections could be more effective, but the size and geographical reach of the sampling frame would still be limited under cost

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Amanda Santos, Sandra Silva-Santos, Michael Duncan, Maria João Lagoa, Susana Vale and Jorge Mota

young schoolchildren (6–9 y). Methods Participants This is a school-based longitudinal study. The data were collected in 2 schools in the metropolitan area of Porto, in the North of Portugal, and the sample was part of the Preschool Physical Activity, Body Composition and Lifestyle Study. For the

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Pedro J. Teixeira, Adilson Marques, Carla Lopes, Luís B. Sardinha and Jorge A. Mota

these activities. This investigation describes the level of self-reported physical activity, the frequency of selected opportunistic nonsedentary behaviors, and the preferences of leisure-time activities in a nationally representative sample of Portuguese adults, using data from the most recent national