Yu-Jie Zhang1, Shi-Hui Fu1, Jing-Xin Wang2, Xin Zhao3, Qiang Zeng3, Xiao-Ying Li4. 1. Department of Geriatric Cardiology, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, China. 2. Department of Rehabilitation, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China; Department of Rehabilitation, Chinese PLA General Hospital, Beijing, China. 3. International Medical Center, Chinese PLA General Hospital, Beijing, China. 4. Department of Geriatric Cardiology, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, China. Electronic address: xyli301@foxmail.com.
Abstract
BACKGROUND: The aim of this study was to evaluate the usefulness of percentage body fat (PBF) in screening for the risk of low muscle mass (LMM) in elderly people. METHODS: A prospective study was carried out in Chinese PLA General Hospital with 413 participants who underwent baseline and an average 2.2-year follow-up health check-up examinations. RESULTS: The average age of the participants at baseline was 63.6 years. The incidence of newly developed LMM was 10.3% in men and 18.2% in women during follow-up. Linear regression demonstrated that baseline PBF were negatively correlated with follow-up total muscle mass index (TMMI) in both men and women (β=-0.124 for men and -0.233 for women, all P < 0.001). The cut-off points of baseline PBF in elderly people for future LMM were 25.45% in men and 30.95% in women and were identified by Receiver Operator Curves (ROC). CONCLUSIONS: Elderly people with a high PBF had a higher risk of new LMM, which suggested that baseline PBF had a close relationship with future LMM and the screening of high PBF should be paid enough attention in health care management in the senior people.
BACKGROUND: The aim of this study was to evaluate the usefulness of percentage body fat (PBF) in screening for the risk of low muscle mass (LMM) in elderly people. METHODS: A prospective study was carried out in Chinese PLA General Hospital with 413 participants who underwent baseline and an average 2.2-year follow-up health check-up examinations. RESULTS: The average age of the participants at baseline was 63.6 years. The incidence of newly developed LMM was 10.3% in men and 18.2% in women during follow-up. Linear regression demonstrated that baseline PBF were negatively correlated with follow-up total muscle mass index (TMMI) in both men and women (β=-0.124 for men and -0.233 for women, all P < 0.001). The cut-off points of baseline PBF in elderly people for future LMM were 25.45% in men and 30.95% in women and were identified by Receiver Operator Curves (ROC). CONCLUSIONS: Elderly people with a high PBF had a higher risk of new LMM, which suggested that baseline PBF had a close relationship with future LMM and the screening of high PBF should be paid enough attention in health care management in the senior people.