Prediction of maximal oxygen consumption using the Young Men's Christian Association-step test in Korean adults.

Purpose: To develop accurate and practical prediction models of maximal oxygen consumption (VOmax) using the Young Men's Christian Association (YMCA)-step test in South Korean adults.

Methods: In total, 568 adults (20-66 years) were included in this study. To develop and cross-validate prediction models of VOmax, the total sample was divided into 80% training and 20% testing using a simple random sampling method.

Motivational signage increases stair usage on a Hispanic serving institution.

Stair climbing is considered a good physical activity. Motivational signage has been successful in promoting stair usage in various settings. This study was to investigate the effects of motivational signage on stair usage in a Hispanic serving institution.

Levels and patterns of self-reported and objectively-measured free-living physical activity among prostate cancer survivors: A prospective cohort study.

Background: No prior study has measured or compared self-reported and objectively measured physical activity trajectories in prostate cancer survivors before and after treatment.

Methods: Clinically localized prostate cancer patients treated with radical prostatectomy were recruited between 2011 and 2014. Of the 350 participants enrolled at the main site, 310 provided self-reported physical activity at baseline before radical prostatectomy, and 5 weeks, 6 months, and 12 months after radical prostatectomy.

Association between objectively measured sedentary behavior and a criterion measure of obesity among adults.

Objective: Results of published studies on the association between sedentary behavior (SB) and obesity are inconsistent, possibly due to reliance on subjective measures of SB and inappropriate measures of obesity. The aim of this study was to examine the relationship between objectively measured SB and criterion-measured obesity among adults.

Methods: A total of 2284 adults (≥18 years) from the 2003 to 2004 National Health and Nutrition Examination Survey were included in the analysis.

Development and Cross-Validation of Equation for Estimating Percent Body Fat of Korean Adults According to Body Mass Index.

Background: Using BMI as an independent variable is the easiest way to estimate percent body fat. Thus far, few studies have investigated the development and cross-validation of an equation for estimating the percent body fat of Korean adults according to the BMI. The goals of this study were the development and cross-validation of an equation for estimating the percent fat of representative Korean adults using the BMI.