The Role of Dietary Patterns in the Contribution of Cardiorespiratory Fitness in Community-Dwelling Older Chinese Adults in Hong Kong

Ruth Chan; Forrest Yau; Blanche Yu; Jean Woo

doi:10.1016/j.jamda.2018.12.009

The Role of Dietary Patterns in the Contribution of Cardiorespiratory Fitness in Community-Dwelling Older Chinese Adults in Hong Kong

J Am Med Dir Assoc. 2019 May;20(5):558-563. doi: 10.1016/j.jamda.2018.12.009. Epub 2019 Feb 1.

Authors

Ruth Chan¹, Forrest Yau², Blanche Yu³, Jean Woo⁴

Affiliations

¹ Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; The Chinese University of Hong Kong Centre for Nutritional Studies, Shatin, Hong Kong. Electronic address: ruthchansm@cuhk.edu.hk.
² Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; The Chinese University of Hong Kong Centre for Nutritional Studies, Shatin, Hong Kong.
³ Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; The Chinese University of Hong Kong Jockey Club Centre for Osteoporosis Care and Control, Shatin, Hong Kong.
⁴ Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; The Chinese University of Hong Kong Centre for Nutritional Studies, Shatin, Hong Kong; The Chinese University of Hong Kong Jockey Club Institute of Ageing, Shatin, Hong Kong.

PMID: 30718152
DOI: 10.1016/j.jamda.2018.12.009

Abstract

Objective: We examined the influence of various dietary patterns on cardiorespiratory fitness (CRF) expressed as peak oxygen uptake (VO₂peak), taking into account demographics and lifestyle risk factors.

Design: Prospective cohort study.

Participants and methods: We conducted multivariate linear regression analyses using available data from a cohort of community-dwelling older Chinese adults (752 men, 483 women) in Hong Kong. Baseline interviewer-administered questionnaires covered dietary intake estimation and dietary pattern generation from the food frequency questionnaire, demographic and lifestyle factors, self-reported medical history, as well as frailty status. VO₂peak at the 7-year follow-up was measured using symptom-limited maximal exercise testing on an electrically braked bicycle ergometer.

Results: In men, baseline Diet Quality Index-International (DQI-I) score (β = 0.044, P = .013) and Okinawan diet score (β = 0.265, P = .014) was independently associated with age-adjusted VO₂peak at the 7-year follow-up. The significant association was only retained for the Okinawan diet score in the multivariate adjusted model (β = 0.227, P = .039). Dietary pattern scores including the Dietary Approaches to Stop Hypertension (DASH) score, Mediterranean-DASH Intervention for Neurodegenerative Delay Diet score, Mediterranean Diet Score, and 3 other pattern scores derived by factor analysis were not associated with VO₂peak. In women, none of the dietary pattern scores at baseline was associated with VO₂peak in both the age-adjusted and multivariate-adjusted models.

Conclusions/implications: A higher Okinawan diet score was associated with a higher 7-year CRF in community-dwelling Chinese older men. Further studies are warranted to examine the underlying mechanisms on how the Okinawan diet influences CRF.

Keywords: Chinese; Dietary pattern; cardiorespiratory fitness; diet quality; intrinsic capacity.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Aged
Cardiorespiratory Fitness
Cognition Disorders / prevention & control*
Cohort Studies
Diet / statistics & numerical data*
Feeding Behavior / psychology*
Female
Food Preferences / psychology*
Geriatric Assessment / statistics & numerical data*
Hong Kong
Humans
Life Style
Male
Middle Aged
Motor Activity
Prospective Studies