EFFECTS OF AGEING ON SITTING BEHAVIOR Losing the ability to stand up may lead to avoidance of moving around, further inactivity and longer sitting. A recent not yet published study involving 884 subjects revealed a significant increase in sitting duration with ageing in the 81- 100 age group compared to the 71-80 age group (Figure 2). 12 Duration of sitting Figure 2. Cross-sectional age differences in sitting duration. Data collected in the Gray Power study of the Vrije Universiteit Amsterdam. Recent studies have suggested that breaking up prolonged sitting may improve glucose metabolism and could represent an important public health and clinical intervention strategy for reducing cardiovascular risk [8–11] and mortality , which underscores the importance of maintaining the ability to stand up from a sitting position.