1. Activity and Health Research. (1992). A report on activity patterns and fitness levels: Main findings. Allied Dunbar fitness survey. London: Sports Council and Health Education Authority.
2. American College of Sports Medicine Position Stand. Exercise and physical activity for older adults. (1998). Medicine and Science in Sports and Exercise, 30(6), 992–1008.
3. Angevaren, M., Aufdemkampe, G., Verhaar, H. J., Aleman, A., & Vanhees, L. (2008). Physical activity and enhanced fitness to improve cognitive function in older people without known cognitive impairment. Cochrane Database Systematic Reviews, 3, CD005381.
4. Baker, M. K., Atlantis, E., & Fiatarone Singh, M. A. (2007). Multi-modal exercise programs for older adults. Age and Ageing, 36(4), 375–381.
5. Bassey, E. J. (2000). The benefits of exercise for the health of older people. Reviews in Clinical Gerontology, 10, 17–31.