Combined Effect of Osteoporosis and Poor Dynamic Balance on the Incidence of Sarcopenia in Elderly Chinese Community Suburban-Dwelling Individuals
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Given the increasing prevalence of osteoporosis and the important role dynamic balanced plays in the assessment of muscle function, we aimed to examine the joint and separate effects of osteoporosis and poor dynamic balance on the incidence of sarcopenia in Chinese elderly individuals.
This study was conducted on 658 (44.4% male) Chinese suburban-dwelling participants with a mean age of 68.42 ± 5.43 years who initially had no sarcopenia and were aged >60 years. A quantitative ultrasound scan of each participant’s calcaneus with a T score less than −2.5 was used to identify the prevalence of osteoporosis. Sarcopenia was diagnosed according to the Asian Working Group for Sarcopenia criteria. We assessed dynamic balance using the Timed Up and Go Test (TUGT). Participants who scored in the top 20% on the TUGT were defined as having poor dynamic balance.
After a follow-up of three years, the incidence of sarcopenia in the general population was 8.1% (9.6% in males, 6.8% in females). The incidence of sarcopenia was progressively greater in people suffering from both osteoporosis and poor dynamic balance (OR=2.416, 95%CI=1.124–5.195) compared to those who only had osteoporosis (OR=0.797, 95%CI=0.378–1.682) or poor dynamic balance (OR=1.226, 95%CI=0.447–3.363) in models without adjustments. Even after adjusting for potential confounders, the result still held true (OR=2.431, 95%CI=1.053–5.614).
In our study, we found individuals who suffered from both osteoporosis and poor dynamic balance simultaneously had a significantly higher incidence of sarcopenia than those who suffered from either one or the other.
Key wordsDynamic balancee elder people osteoporosis sarcopenia
The authors thank Guiyan Shao from the Chadian public health center and Xiaofang Ren from Hangu welfare house for providing place and organization.
Funding: This work was supported by grant from National Natural Science Foundation of China (81601952) and Tianjin Municipal Science and Technology Commission (16ZXMJSY00070, Tianjin, China), and Health and Family Planning Commission of Binhai New Area (2017BWKZ005).
Ethics approval and consent to participate: This research was approved by the Ethics Committee at Tianjin Medical University. The methodological sessions were carried out in accordance with the approved guidelines and regulations. The participants were fully informed of the nature of research and signed an informed consent to participate.
Competing interests: The authors declare that they have no competing interests in this section.
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