Intrinsic motivation in two exercise interventions: Associations with fitness and body composition
Data(s) |
01/02/2016
|
---|---|
Resumo |
OBJECTIVE: To examine the motivational process through which increases in aerobic capacity and decreases in total body fat are achieved during high-intensity intermittent training (HIT) and moderate-intensity continuous training (MICT) interventions. METHOD: Eighty-seven physically inactive adults (65% women, age = 42 ± 12, BMI = 27.67 ± 4.99 kg/m²) took part in a 10-week randomized intervention testing group-based HIT, operationalized as repeated sprints of 15-60 s interspersed with periods of recovery cycling ≤ 25 min/session, 3 sessions/wk⁻¹, or MICT, operationalized as cycling at constant workload of ∼65% maximum aerobic capacity (VO₂max, 30-45 min/session⁻¹, 5 sessions/wk⁻¹. Assessments of VO₂max and total body fat were made pre- and postintervention. Motivation variables were assessed midintervention and class attendance was monitored throughout. Path analysis was employed, controlling for treatment arm and baseline values of VO₂max and total body fat. RESULTS: The 2 groups differed in adherence only, favoring HIT. Baseline VO₂max predicted intrinsic motivation midintervention. Intrinsic motivation predicted program adherence, which in turn predicted increases in VO2max and decreases in total body fat by the end of the study. CONCLUSION: Intrinsic motivation in HIT and MICT is positively linked to adherence to these programs, which can facilitate improvements in fitness and body composition. |
Identificador | |
Idioma(s) |
eng |
Publicador |
American Psychological Association |
Relação |
http://dro.deakin.edu.au/eserv/DU:30084916/shaw-intrinsicmotivation-2016.pdf http://www.dx.doi.org/10.1037/hea0000260 |
Direitos |
2015, American Psychological Association |
Palavras-Chave | #self-determination #VO2max #body fat #HIT #path analysis |
Tipo |
Journal Article |