Balance and mobility relationships in older adults: A representative population-based cross-sectional study in Madeira, Portugal

Gouveia, Élvio R.; Gouveia, Bruna R.; Ihle, Andreas; Kliegel, Matthias; Marques, Adilson; Freitas, Duarte L.

http://hdl.handle.net/10400.13/2263

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Background: Balance and mobility impairments are important modiﬁable risk factors associated with falls in older people. Purpose: To investigate how diﬀerent functional ﬁtness components relate to balance and mobility, after controlling for age, sex, body mass index (BMI), and diﬀerent physical activity (PA) domains. Methods: This representative cross-sectional study included 802 individuals, 401 males and 401 females (69.8 ± 5.6 years) from Madeira, Portugal. The Fullerton Advance Balance (FAB) scale was used to assess balance. Mobility in terms of gait velocity, cadence, stride length, and gait stability ratio (GSR) were assessed using the 50-foot Walk test. PA was assessed through a face-to-face interview using the Baecke questionnaire, and functional ﬁtness was assessed with Senior Fitness tests (strength, ﬂexibility, and aerobic endurance). Results: Balance and mobility were negatively associated with age and BMI, and positively related to PA and functional ﬁtness. Moreover, male presented better performance in balance and mobility. Hierarchical multiple regression analyses showed that functional ﬁtness explained the highest amount of variance in balance and all mobility parameters(over andaboveage,sex,BMI,and PA).Speciﬁcally, entering functional ﬁtnesscomponents signiﬁcantly increased explained variance in FAB (+19%), gait velocity (+25%), cadence (+15%), stride length (+9%), and GSR (+ 31%). In these models, aerobic endurance consistently had the strongest contribution. Conclusion: Strength, ﬂexibility, and especially aerobic endurance, over and above non-modiﬁable variables like age and sex, are crucial for maintaining or improving balance and mobility and, thereby, prevent falls in older people.