The promotion of physical activity plays a major role for healthy ageing in older age. There is a lack of cross-sectional and longitudinal studies explicitly dealing with barriers and drivers to physical activities in older adults. Therefore this study aims to identify factors associated with insufficient physical activity in 65 to 75- year-olds in Europe." Lubs et al., (2018).

a. Evaluate the TWO (2) typical forms of research design (quantitative & qualitative) in both time horizons.

b. Derive TWO (2) research questions based on the above study and develop

TWO(2) relevant research hypotheses for your research questions.