Search Results

You are looking at 1 - 3 of 3 items for

  • Author: Miyoung Lee x
Clear All Modify Search
Restricted access

Weimo Zhu and Miyoung Lee


The purpose of this study was to investigate the validity and reliability evidences of the Omron BI pedometer, which could count steps taken even when worn at different locations on the body.


Forty (20 males and 20 females) adults were recruited to walk wearing 5 sets, 1 set at a time, of 10 BI pedometers during testing, 1 each at 10 different locations. For comparison, they also wore 2 Yamax Digi-Walker SW-200 pedometers and a Dynastream AMP 331 activity monitor. The subjects walked in 3 free-living conditions: a fat sidewalk, stairs, and mixed conditions.


Except for a slight decrease in accuracy in the pant pocket locations, Omron BI pedometers counted steps accurately across other locations when subjects walked on the fat sidewalk, and the performance was consistent across devices and trials. When the subjects climbed up stairs, however, the absolute error % of the pant pocket locations increased significantly (P < .05) and similar or higher error rates were found in the AMP 331 and SW-200s.


The Omron BI pedometer can accurately count steps when worn at various locations on the body in free-living conditions except for front pant pocket locations, especially when climbing stairs.

Restricted access

Alicia Dixon-Ibarra, Miyoung Lee and Anisia Dugala

The purpose of this study was to examine the physical activity patterns of older adults with intellectual disabilities (ID) in comparison with younger adults with ID and older adults without ID. A sample of 109 participants was included in the study. Sophisticated data reduction, time stamped technology, and multiple objective measures (i.e., pedometers and accelerometers) were used to determine physical activity intensities and walking patterns of participants. Results indicate that older adults with ID are performing less physical activity than comparison groups. A small proportion of older adults with ID (6%) met national physical activity recommendations of 150 min of moderate or 75 min of vigorous physical activity in bouts greater than ten minutes across the week (USDHHS, 2008). Sedentary behavior was also an observable factor in this study. These findings demonstrate the need for health promotion efforts for adults with ID across the lifespan.

Restricted access

JooYong Park, Aesun Shin, Miyoung Lee, Jaesung Choi, Minkyo Song, Yeonjung Kim, Jong-koo Lee, Daehee Kang and Ji-Yeob Choi

Background: This study aimed to estimate the prevalence and trends of participation in physical activity (PA) in Korean adults. Methods: The Korea National Health and Nutrition Examination Survey (KNHANES; 2009–2013) and the Korea Community Health Survey (KCHS; 2009–2013) were used to estimate the prevalence of PA. Age standardization was performed using population projections for Korea in 2005 as a standard population. Trends of the prevalence from 2009 to 2013 were assessed by joinpoint regression analysis. Results: The age-standardized prevalence for achieving the recommended level of PA was 63.0% in KNHANES and 64.5% in KCHS for men, and 53.7% in KNHANES and 56.3% in KCHS for women. Decreasing trends were observed for the prevalence of achieving the recommended level of PA in the KNHANES and KCHS; however, only the trend for women in KNHANES was statistically significant. Conclusions: Approximately, 60% of adults participate in the recommended level of PA in Korea. The survey design and characteristics should be considered when interpreting the prevalence of PA from different databases.