Abstract
The aim of this study was to review the literature dealing with the force-time characteristics of different forms of physical activity performed with upper limbs by the elderly and the disabled (Nordic Walking and using a wheelchair, respectively) and of manual techniques used by physiotherapists. Values of work and power were analysed as well. Based on the analysis of the literature concerning the substantive areas included in this article, we believe that objective measurements will expand the present knowledge about values of force developed by upper limbs during different forms of human activity. It seems to be of particular significance in the application of manual therapy techniques, because currently values of force exerted upon the patient while applying these techniques are selected by a physiotherapist intuitively and are neither objective nor systematically controlled. The identification of the values of force developed with upper limbs by the elderly, the disabled and physiotherapists during the aforementioned forms of activity will make an original contribution to the broadly defined physical culture, especially rehabilitation and health promotion.