Acute mood responses to a 15min-long walking session at self-selected intensity: effects of an experimentally-induced telic or paratelic state.

In the present controlled experiment, we examine the influence of opposite states of mind (the "telic" vs. "paratelic" state) on mood response to a 15 min long walk at self-selected pace. Fifty-five first-year students were randomized to a telic (n = 22) or paratelic (n = 33) motivational environment. These opposed motivational environments were created using established reversal theory based procedures to induce the telic versus paratelic state. More than 90% of participants walked within a motivational state corresponding to the environment they were allocated. No significant mood changes (neither positive, nor negative) occurred pre- to postexercise in participants who walked with the telic state operative (p > .05). This has important implications when considering the use of exercise to relieve depression in clinical populations. Also, our findings shed new light on the reasons why not all individuals respond in the same way to moderate exercise. Practically, these results suggest that motivational state should be considered to optimize the mood enhancing effects of aerobic exercise.