Hand grip strength in older and very old people: Results of the study Gesundheit 65+

Abstract

Abstract Background Functional capacity decreases with increasing age. Hand grip strength (HGS) is considered as an objective general measure of health and a parameter of muscle strength, a component of functional capacity and is part of the evaluation of frailty. HGS is important for many everyday functions, such as holding heavy objects or supporting oneself to prevent a fall. Low HGS is associated with a higher mortality risk. In our study we describe HGS in people aged 66 to 101 years in Germany and identify groups with low HGS. Methods Gesundheit 65+ is a longitudinal epidemiologic study of the health status of persons 65 years and older in Germany by the Robert Koch Institute. In 2022/23, one year after baseline, isometric HGS was measured during the examination part of the study using a hand-held dynamometer (Smedley, Scandidact, Denmark, 100 kg). Two values were recorded for each hand. Maximum HGS from all attempts was used for analyses. Weighted prevalence estimates and 95% confidence interval (CI) for grip strength are reported by sex, age-group, height, self-rated health, chronic conditions, and difficulties in activities of daily living (ADL). Results HGS was measured in 1,457 persons aged 66 to 101 (48% women). Mean maximum HGS was 28.8 kg (CI 28.4-29.3). HGS was significantly related to sex (men: 35.4 kg, CI 34.8-36.0, women 21.8 kg, CI 21.4-22.2) and age (66-79: 31.0 kg, CI 30.1-31.9, 80+: 23.9 kg, CI 23.0-24.7). In both sexes, shorter persons and persons with bad self-rated health, chronic conditions or difficulties in ADL showed lower HGS than their reference group. Conclusions HGS was reduced in very old people, people with support needs, and people with poor health or chronic diseases, identifying these people as important risk groups for preventive measures. These should aim to improve not only endurance but also strength in older and very old people. In the long term, this could also maintain independence and reduce serious injuries from falls. Key messages • We found sex and age-related differences in hand grip strength in older people in Germany. • Based on the results, planning of prevention and intervention could be enhanced.