• Preventive medicine · Oct 2023

    Walking more, not faster, is associated with bone health in China of community-dwelling older women:A cross-sectional study.

    • Shuting Yin, Litao Du, Qiang He, Yang Pan, Ting Li, Xiaoyu Ren, Si Chen, and Xianliang Zhang.
    • School of Physical Education, Shandong University, 17922 Jingshi Road, Lixia District, Jinan City, Shandong Province 250061, China.
    • Prev Med. 2023 Oct 1; 175: 107722107722.

    AimsTo examine the association between daily steps and step intensity with bone health in Chinese community-dwelling older women.MethodsData from 1116 women in the Physical Activity and Health in Older Women Study in China, 2021. Three bone parameters: bone quality index (BQI), speed of sound (SOS), and broadband ultrasound attenuation (BUA) were measured in the left heel using an ultrasound bone densitometer and transformed into dichotomous variables from medians. Daily steps and step intensity (slow step time, brisk step time, peak 1-min cadence, peak 30-min cadence, and peak 60-min cadence) were measured using a triaxial accelerometer. Participants with high BQI, SOS, and BUA levels were used as references for logistic regression models to explore the association of daily steps and step intensity with bone health.ResultsDaily steps were positively associated with the BQI (odds ratio [OR] = 0.94, confidence interval [CI] = 0.89,1.00), SOS (OR = 0.93, CI = 0.88,0.99), and BUA (OR = 0.93, CI = 0.88,0.99) among older women. There was no significant association between peak cadence and bone health. Slow step time was positively associated with the BQI (OR = 0.94, CI = 0.90,0.99) and SOS (OR = 0.93, CI = 0.88,0.97), while brisk step time was positively associated with the BQI (OR = 0.89, CI = 0.82,0.97), SOS (OR = 0.87, CI = 0.80,0.94), and BUA (OR = 0.89, CI = 0.82,0.97). Moreover, 10,000 steps/day or more was significantly associated with the BQI (OR = 0.52, CI = 0.33,0.81), SOS (OR = 0.55, CI = 0.35,0.86), and BUA (OR = 0.45, CI = 0.28, 0.70) compared to <6000 steps/day.ConclusionIncreasing the number of daily steps or the duration of walking, whether fast or slow, may benefit the bone health of older women.Copyright © 2023. Published by Elsevier Inc.

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