Abstract:
The Mindfulness-Acceptance-Commitment (MAC) intervention produces reliable improvement
in athletic performance, but little is known about the effectiveness of the intervention in
improving psychosocial factors outside of sport. The three studies that have tested this question
have methodological problems and produced unexpected results. Utilizinga single-case multiple
baseline design, the present study tested the effect of the MAC intervention on four psychosocial
outcomes of interest: depression, generalized anxiety, social anxiety, and academic distress, Four
collegiate football players completed the seven MAC sessions and completed measures of
psychosocial outcomes. The intervention produced psychosocial improvements in some but not
all participants. Implications for future research and application are discussed.