Muscle, Health and Costs: A Glance at their Relationship.

OBJECTIVE: To assess the association between muscle parameters (mass, strength, physical performance) and activities of daily living (ADL), quality of life (QoL), and health care costs. DESIGN: Cross-sectional Maastricht Sarcopenia Study (MaSS). SETTING: Community-dwelling, assisted-living, residential living facility. PARTICIPANTS: 227 adults aged 65 and older. MEASUREMENTS: Muscle mass, hand grip strength and physical performance were assessed by bio-electrical impedance, JAMAR dynamometer and the Short Physical Performance Battery, respectively. Health outcomes were measured by the Groningen Activity Restriction Scale (disability in ADL) and the EQ-5D-5L (QoL). Health care costs were calculated based on health care use in the past three months. RESULTS: Muscle strength and physical performance showed a strong correlation with ADL, QoL, and health care costs (P<.01); for muscle mass no significant correlations were observed. Regression analyses showed that higher gait speed (OR 0.06, 95%CI 0.01-0.55) was associated with a lower probability of ADL disability. Furthermore, slower chair stand (OR 1.23, 95%CI 1.08-1.42), and more comorbidities (OR 1.58, 95%CI 1.23-2.02) were explanatory factors for higher ADL disability. Explanatory factors for QoL and costs were: more disability in ADL (OR 1.26, 95%CI 1.12-1.41 for QoL; B = 0.09, P<.01 for costs) and more comorbidities (OR 1.44, 95%CI 1.14-1.82 for QoL; B = 0.35, P<.01 for costs). CONCLUSION: Lower gait speed and chair stand were potential drivers of disability in ADL. Disability in ADL and comorbidities were associated with QoL and health care costs in community-dwelling older adults. Improving physical performance may be a valuable target for future intervention and research to impact health burden and costs.

[Sarcopenia]. / Sarcopenie.

Sarcopenia, the decrease in muscle mass and function, may lead to various negative health outcomes, including loss of physical performance and loss of the ability to perform the activities of daily living. The exact mechanisms of sarcopenia are not yet fully understood, but it is obvious that besides ageing, metabolic alterations, diseases, nutrition, and physical exercise play a major role. In the Netherlands, screening ofsarcopenia is not yet performed in daily practice. Evidence exists that training of muscle strength, whether or not combined with a dietary intervention, has a positive effect on the loss of muscle mass and function.