Yasmina Nasstasia

Pilot Study of an Exercise Intervention for Depressive Symptoms and Associated Cognitive-behavioral Factors in Young Adults With Major Depression.

Abstract This study assesses the feasibility of integrating motivational interviewing (MI) with an exercise intervention. It also explores patterns of depressive symptom changes (cognitive, affective, and somatic subscales) and their relationship to cognitive, behavioral, and immunological factors (interleukin 6, IL-6, a marker for inflammation) across the exercise intervention. Twelve young adults (20.8 ± 1.7 years) meeting DSM-IV criteria for major depressive disorder received a brief MI intervention followed by a 12-week exercise intervention. Assessments were conducted preintervention, postintervention, throughout the intervention, and at follow-up. Preliminary results show differential effects of exercise, with the largest standardized mean improvements for the affective subscale (−1.71), followed by cognitive (−1.56) and somatic (−1.39) subscales. A significant relationship was observed between increased behavioral activation and lower levels of IL-6. Despite study limitations, the magnitude of changes suggests that natural remission of depressive symptoms is an unlikely explanation for the findings. A randomized controlled trial has commenced to evaluate effectiveness of the intervention.

Evaluating the efficacy of an integrated motivational interviewing and multi-modal exercise intervention for youth with major depression: Healthy Body, Healthy Mind randomised controlled trial protocol

Background Recent meta-analytic reviews suggest exercise can reduce depression severity among adults with major depressive disorder (MDD); however, efficacy studies with depressed youth are limited. Few studies have investigated the efficacy of multi-modal exercise interventions in this population, addressed treatment engagement, or explored the differential effects of exercise on depressive symptom profiles. Objectives This paper describes the study protocol and recruitment pattern for an assessor blinded, two-arm randomised controlled trial investigating the efficacy of an integrated motivational interviewing (MI) and multi-modal exercise intervention in youth diagnosed with MDD. Associations between depressive symptom profiles (cognitive, somatic and affective) and psychological, physiological (fitness), and biological (blood biomarker) outcomes will also be examined. Methods Participants aged 15–25 years with current MDD were recruited. Eligible participants were randomised and stratified according to gender and depression severity to either an immediate or delayed (control) group. The immediate group received a brief MI intervention followed by a 12-week small group exercise intervention (3 times per week for 1 h), all delivered by personal trainers. The delayed control group received the same intervention 12-weeks later. Both groups were reassessed at mid-treatment or mid-control, post-treatment or post-control, and follow-up (12 weeks post-treatment). Results 68 participants were recruited and randomly allocated to an intervention group. Conclusion This trial will increase our understanding of the efficacy of multi-modal exercise interventions for depression and the specific effects of exercise on depressive symptom profiles. It also offers a novel contribution by addressing treatment engagement in exercise efficacy trials in youth with MDD.