Akuta effekter av fysisk träning av olika intensitet på sinnesstämning hos friska vuxna

• Main Author: Grinsvall Duf, Moa
• Format: Dissertation
• Language: Swedish
• Published: ProQuest Dissertations & Theses 01-01-2023
• Subjects: Clinical psychology; Exercise, kinesiology, and sport sciences; Kinesiology; Mental health
• ISBN: 9798381715330

AimThe purpose of the study was to investigate which exercise intensity was most favorable for changing mood acutely in a positive direction and which factors that could moderate this effect. The study’s hypothesis was that intensity close to the ventilatory threshold leads to the greatest change in mood in a positive direction for Positive and Negative Affect Schedule (PANAS) positive scale, which corresponded to medium and high intensity in this study. The hypothesis was that medium and high intensity leads to a greater change in mood in a positive direction than low intensity exercise.MethodThe study used an experimental within-individual design where positive and negative mood was measured before and after exercise with the PANAS scale. Participants performed cycling exercise based on their estimated maximum oxygen uptake capacity (VO2max) for 20 minutes at one of the following intensity levels per session: low-intensity (approx 40% of VO2max), medium-intensity (approx 60% of VO2max), high-intensity (approx 80% of VO2max).Results12 healthy young adult participants completed the study. There was no significant interaction between exercise intensity (low, medium, high) and time (pre-exercise, post-exercise) on positive mood, thus no support for the hypothesis was found. In contrast, the variable time showed a significant main effect, where positive mood increased after exercise, independent of exercise intensity. The fitness level of the participants had a significant moderating effect. Neither stress, anxiety nor gender had a significant moderating effect.ConclusionThere was no support for the study’s hypothesis that mood would change most in a positive direction at medium and high intensity. However, we found that mood change significantly and in a positive direction after exercise, regardless of exercise intensity. Future research should include a physical passive control group to ascertain whether positive mood is indeed equally benefited by low, medium and high exercise intensity.