Cheng Jingwei, Meng Shuqiao, Lee Jaewoo, Kwak Han-Byung, Liu Yangqing
Graduate School, Kyunggi University, Suwon, 16227, Korea.
Physical Education College of Yangzhou University, Yangzhou, 225127, China.
J Bone Miner Metab. 2022 May;40(3):528-534. doi: 10.1007/s00774-022-01317-7. Epub 2022 Mar 26.
Bone mineral density (BMD) decreases with age, leading to fractures, decreased mobility, and impaired quality of life. We aimed to determine the effects of brisk walking and exposure to sunlight on BMD and balance in the elderly with osteopenia.
We recruited 81 elderly subjects with osteopenia from January 2019 to March 2019. They were divided into four groups: a daytime-walking group (n = 20), a night-time-walking group (n = 20), a sun-exposure-only group (n = 20), and a control group (n = 21). The subjects walked briskly for 30-60 min three times a week for 24 weeks. The sun-exposure-only group received sunlight for 20-30 min three times a week. All four groups received supplemental calcium. Lumbar L1-L4 BMD, serum 25-hydroxyvitamin D3, timed-up-go-test (TUGT), five-times-sit-stand-test (FTSST), open-eye and closed-eye one-leg-stance-test (OLST) were measured at baseline and 1 day after program completion.
The lumbar L1-L4 BMD was higher in all intervention groups (P < 0.05), with the daytime-walking group outperforming the others. There was no significant difference between the night-time-walking and sun-exposure-only groups (P > 0.05). The levels of serum 25-hydroxyvitamin D3 in the daytime-walking and sun-exposure-only groups were higher than those in the night-time-walking and control groups (P < 0.05). The TUGT and FTSST times decreased in all three intervention groups and predominantly so in the daytime-walking group, whereas the open-eye and closed-eye OLST times increased (P < 0.05).
Brisk walking and sun exposure increase BMD and improve dynamic and static balance in the elderly with osteopenia.
骨密度（BMD）会随着年龄增长而降低，进而导致骨折、活动能力下降以及生活质量受损。我们旨在确定快走和晒太阳对骨质减少的老年人的骨密度及平衡能力的影响。
我们在2019年1月至2019年3月招募了81名骨质减少的老年受试者。他们被分为四组：日间步行组（n = 20）、夜间步行组（n = 20）、仅晒太阳组（n = 20）和对照组（n = 21）。受试者每周快走3次，每次30 - 60分钟，共进行24周。仅晒太阳组每周接受3次20 - 30分钟的阳光照射。所有四组均补充钙。在基线时以及项目完成后1天测量腰椎L1 - L4骨密度、血清25 - 羟基维生素D3、计时起立行走测试（TUGT）、五次坐立测试（FTSST）、睁眼和闭眼单腿站立测试（OLST）。
所有干预组的腰椎L1 - L4骨密度均较高（P < 0.05），其中日间步行组表现优于其他组。夜间步行组和仅晒太阳组之间无显著差异（P > 0.05）。日间步行组和仅晒太阳组的血清25 - 羟基维生素D3水平高于夜间步行组和对照组（P < 0.05）。所有三个干预组的TUGT和FTSST时间均减少，日间步行组减少尤为明显，而睁眼和闭眼OLST时间增加（P < 0.05）。
快走和晒太阳可提高骨质减少老年人的骨密度，并改善其动态和静态平衡能力。
