Background
As a conscious activity of an individual, physical activity (PA) constitutes an element of the free-time dimension. The type of goal allows us to distinguish between sport and PA: sport performance vs. psychophysical health – hence the idea to develop a tool for measurement of the motivational function of an objective in physical activity and sport.

Participants and procedure
The normalisation sample consisted of 2141 individuals: 1163 women aged 16-64 (M = 23.90, SD = 8.30) and 978 men aged 16-66 (M = 24.50, SD = 9.40). In the process of validation, a factor analysis, and subsequently validity and reliability analysis of the tool, and normalisation of scales were performed.

Results
Based on the factor analysis and the degree to which each of the given items conformed to the theory of the motivational function of an objective, the following scales were distinguished: 1) motivational value (the extent to which the objective influences the actions undertaken by an individual), 2) time management (the level of focus on planning, arranging and organizing time for PA), 3) persistence in action (efficiency and persistence of action, and the ability to deal with adversities), and 4) motivational conflict (the level of conflict: PA objectives vs. other objectives). The Cronbach’s α reliability coefficient for this version reached .78. The Inventory of Physical Activity Objectives (IPAO) also included questions that allow one to control for variables such as the variety of forms, duration, and frequency of PA, and socio-demographic variables.

Conclusions
The IPAO, as a new method for measuring motives for physical activity and sport, is characterized by good psychometric properties. The IPAO can serve both scientific research and as a useful tool for personal trainers, helping diagnose the motives for engaging in PA and sports. With knowledge about the purposefulness of actions, it is possible to support and shape additional motivation experienced by an individual, by setting new, realistic objectives.