Details

Autor(en) / Beteiligte

• Lagally, Kristen M
• O'Hara, Shannon
• Amorose, Anthony J
• Suhadolnik, Liana
• Kurka, Jonathan

Titel

Comparison Of Affective Responses To Exercise When Intensity is Self-selected versus Imposed

Ist Teil von

• Medicine and science in sports and exercise, 2012-05, Vol.44 (5S), p.861-861

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Allowing individuals to have autonomy over the intensity of their physical activity may lead to more positive affective responses about exercise when compared to situations where intensity is imposed. PURPOSE: The purpose of this study was to compare affective responses between two exercise conditions: 1) where intensity is imposed (i.e. low autonomy) and 2) where intensity is self-selected (i.e. high autonomy). METHODS: Eleven subjects (6 women, 5 men; age = 22.2+ or -3.8 years, VO super(2)max = 53.1+ or -12.1 ml times kg super(-1) times min super(-1 )) performed a maximal exercise test to allow determination of relative workloads in the subsequent experimental sessions, which involved 30 minutes of treadmill exercise. During the first experimental session, participants were asked to self-select a speed and grade that they would prefer for a workout and were permitted to adjust intensity at 5-minute intervals. For the second session, the speed and grade were imposed by the investigator, but were the same as in the self-selected session. Speed, grade and heart rate responses were hidden from participants in both sessions. RESULTS: Participants self-selected intensities that ranged from 68-91% (M+ or -SD=80.7+ or -7.3%) of measured maximal heart rate. Manipulation checks found no significant differences in intensity (i.e. heart rate and RPE) between sessions but found that perceived autonomy was significantly higher in the self-selected session. Repeated-measures ANOVA (Session: self-selected vs. imposed X Time: pre- vs. post-exercise) indicated a significant interaction for positive affect (partial Eta squared = .31). Positive affect increased over time in both sessions, but there was a greater increase in the self-selected session (self-selected =2.15 vs. 3.12; imposed =2.06 vs. 2.70). CONCLUSIONS: These results suggest that perceived autonomy is related to affective responses to exercise.