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Nov 11, 2013 - Association between Dietary Fiber Intake and Physical. Performance in Older Adults: A Nationwide Study in. Taiwan. I-Chien Wu1,2, Hsing-Yi ...

Association between Dietary Fiber Intake and Physical Performance in Older Adults: A Nationwide Study in Taiwan I-Chien Wu1,2, Hsing-Yi Chang1, Chih-Cheng Hsu1, Yen-Feng Chiu1, Shu-Han Yu3, Yi-Fen Tsai1, Shi-Chen Shen4, Ken N. Kuo1,5, Ching-Yu Chen1,6, Kiang Liu7, Marion M. Lee8☯, Chao A. Hsiung1*☯ 1 Institute of Population Health Sciences, National Health Research Institutes, Miaoli, County, Taiwan, 2 Program for Aging, College of Medicine, China Medical University, Taichung, Taiwan, 3 Chung Shan Medical University Hospital, Taichung, Taiwan, 4 Mennonite Christian Hospital, Hualien, Taiwan, 5 Center for Evidence-Based Medicine, Taipei Medical University, Taipei, Taiwan, 6 Department of Family Medicine, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan, 7 Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America, 8 Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America

Abstract Background: Physical performance is a major determinant of health in older adults, and is related to lifestyle factors. Dietary fiber has multiple health benefits. It remains unclear whether fiber intake is independently linked to superior physical performance. We aimed to assess the association between dietary fiber and physical performance in older adults. Methods: This was a cross-sectional study conducted with community-dwelling adults aged 55 years and older (n=2680) from the ongoing Healthy Aging Longitudinal Study (HALST) in Taiwan 2008-2010. Daily dietary fiber intake was assessed using a validated food frequency questionnaire. Physical performance was determined objectively by measuring gait speed, 6-minute walk distance, timed “up and go” (TUG), summary performance score, hand grip strength. Results: Adjusting for all potential confounders, participants with higher fiber intake had significantly faster gait speed, longer 6-minute walk distance, faster TUG, higher summary performance score, and higher hand grip strength (all P 35.35 g/d), women in the lowest quartile for fiber intake (

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