Ryoji Tominaga1, Shingo Fukuma2,3, Shin Yamazaki2,4, Miho Sekiguchi1, Koji Otani1, Shin-Ichi Kikuchi1, Sho Sasaki3, Susumu Kobayashi3, Shunichi Fukuhara2,3, Shin-Ichi Konno1. 1. Department of Orthopaedic Surgery, School of Medicine, Fukushima Medical University. 2. Department of Healthcare Epidemiology, Kyoto University School of Public Health. 3. Center for Innovative Research for Communities and Clinical Excellence (CIRCLE), Fukushima Medical University. 4. Center for Environmental Health Science, National Institute for Environmental Studies, Tsukuba, Japan.
Abstract
STUDY DESIGN: A cohort study using data from the Locomotive Syndrome and Health Outcome in Aizu Cohort Study, a population-based prospective cohort study of residents of the towns of Tadami and Minamiaizu in Fukushima Prefecture, Japan. OBJECTIVE: The aim of this study was to clarify the association between kyphotic posture and falls, and to investigate the presence or absence of sex differences. SUMMARY OF BACKGROUND DATA: In our literature review, we found no studies focusing on sex differences in the association between kyphotic posture and falls. METHODS: We included subjects aged more than 40 years who participated in annual health check-ups from 2009 to 2010. We analyzed the effects of kyphotic posture, measured using the wall-occiput test (WOT), on falls, adjusting for potential confounders, such as age, body mass index, symptoms of depression, sedative medication, and other comorbidities. RESULTS: We enrolled a total of 1418 subjects into primary analyses (593 men, 825 women; mean [standard deviation] age, 68.1 [7.7] yrs). We then stratified subjects into the following groups according to the degree of kyphotic posture: nonkyphotic posture (n = 1138, 80.3%), mild kyphotic posture (n = 172, 12.1%), and severe kyphotic posture (n = 108, 7.6%). We observed no significant difference in the severity of kyphotic posture between men and women (P = 0.18). Overall, 284 subjects (20.0%) experienced at least one fall during the one-year period. After adjustment for potential confounders using a logistic regression model, we observed a significant association between severe kyphotic posture and falls for men [odds ratio (OR) 2.14 (1.01-4.57); P = 0.048]. In contrast, we observed no significant association for women [OR for severe kyphotic posture 0.80 (0.43-1.50), OR for mild kyphotic posture 0.91 (0.53-1.57)]. CONCLUSION: We identified a sex difference in the association between kyphotic posture and falls in community-dwelling adults. In particular, severe kyphotic posture might only increase the incidence of falls in men. LEVEL OF EVIDENCE: 3.
STUDY DESIGN: A cohort study using data from the Locomotive Syndrome and Health Outcome in Aizu Cohort Study, a population-based prospective cohort study of residents of the towns of Tadami and Minamiaizu in Fukushima Prefecture, Japan. OBJECTIVE: The aim of this study was to clarify the association between kyphotic posture and falls, and to investigate the presence or absence of sex differences. SUMMARY OF BACKGROUND DATA: In our literature review, we found no studies focusing on sex differences in the association between kyphotic posture and falls. METHODS: We included subjects aged more than 40 years who participated in annual health check-ups from 2009 to 2010. We analyzed the effects of kyphotic posture, measured using the wall-occiput test (WOT), on falls, adjusting for potential confounders, such as age, body mass index, symptoms of depression, sedative medication, and other comorbidities. RESULTS: We enrolled a total of 1418 subjects into primary analyses (593 men, 825 women; mean [standard deviation] age, 68.1 [7.7] yrs). We then stratified subjects into the following groups according to the degree of kyphotic posture: nonkyphotic posture (n = 1138, 80.3%), mild kyphotic posture (n = 172, 12.1%), and severe kyphotic posture (n = 108, 7.6%). We observed no significant difference in the severity of kyphotic posture between men and women (P = 0.18). Overall, 284 subjects (20.0%) experienced at least one fall during the one-year period. After adjustment for potential confounders using a logistic regression model, we observed a significant association between severe kyphotic posture and falls for men [odds ratio (OR) 2.14 (1.01-4.57); P = 0.048]. In contrast, we observed no significant association for women [OR for severe kyphotic posture 0.80 (0.43-1.50), OR for mild kyphotic posture 0.91 (0.53-1.57)]. CONCLUSION: We identified a sex difference in the association between kyphotic posture and falls in community-dwelling adults. In particular, severe kyphotic posture might only increase the incidence of falls in men. LEVEL OF EVIDENCE: 3.
Authors: Marije C Koelé; Hanna C Willems; Karin M A Swart; Suzanne C van Dijk; Paul Lips; Lisette C P G M de Groot; Tischa J M van der Cammen; M Carola Zillikens; Natasja M van Schoor; Nathalie van der Velde Journal: Osteoporos Int Date: 2021-09-08 Impact factor: 4.507