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Exercise Adherence and Effect of Self-Regulatory Behavior Change Techniques in Patients Undergoing Curative Cancer Treatment: Secondary Analysis from the Phys-Can Randomized Controlled Trial.
Mazzoni, Anne-Sophie; Brooke, Hannah L; Berntsen, Sveinung; Nordin, Karin; Demmelmaier, Ingrid.
Afiliación
  • Mazzoni AS; Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.
  • Brooke HL; Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.
  • Berntsen S; Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.
  • Nordin K; Department of Sport Science and Physical Education, University of Agder, Norway.
  • Demmelmaier I; Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.
Integr Cancer Ther ; 19: 1534735420946834, 2020.
Article en En | MEDLINE | ID: mdl-32909467
ABSTRACT

INTRODUCTION:

Adherence to exercise interventions in patients with cancer is often poorly described. Further, it is unclear if self-regulatory behavior change techniques (BCTs) can improve exercise adherence in cancer populations. We aimed to (1) describe exercise adherence in terms of frequency, intensity, time, type (FITT-principles) and dropouts, and (2) determine the effect of specific self-regulatory BCTs on exercise adherence in patients participating in an exercise intervention during curative cancer treatment.

METHODS:

This study was a secondary analysis using data from a Swedish multicentre RCT. In a 2×2 factorial design, 577 participants recently diagnosed with curable breast, colorectal or prostate cancer were randomized to 6 months of high (HI) or low-to-moderate intensity (LMI) exercise, with or without self-regulatory BCTs (e.g., goal-setting and self-monitoring). The exercise program included supervised group-based resistance training and home-based endurance training. Exercise adherence (performed training/prescribed training) was assessed using attendance records, training logs and heart rate monitors, and is presented descriptively. Linear regression and logistic regression were used to assess the effect of self-regulatory BCTs on each FITT-principle and dropout rates, according to intention-to-treat.

RESULTS:

For resistance training (groups with vs without self-regulatory BCTs), participants attended on average 52% vs 53% of prescribed sessions, performed 79% vs 76% of prescribed intensity, and 80% vs 77% of prescribed time. They adhered to exercise type in 71% vs 68% of attended sessions. For endurance training (groups with vs without self-regulatory BCTs), participants performed on average 47% vs 51% of prescribed sessions, 57% vs 62% of prescribed intensity, and 71% vs 72% of prescribed time. They adhered to exercise type in 79% vs 78% of performed sessions. Dropout rates (groups with vs without self-regulatory BCTs) were 29% vs 28%. The regression analysis revealed no effect of the self-regulatory BCTs on exercise adherence.

CONCLUSION:

An exercise adherence rate ≥50% for each FITT-principle and dropout rates at ~30% can be expected among patients taking part in long-term exercise interventions, combining resistance and endurance training during curative cancer treatment. Our results indicate that self-regulatory BCTs do not improve exercise adherence in interventions that provide evidence-based support to all participants (e.g., supervised group sessions). TRIAL REGISTRATION NCT02473003.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Neoplasias de la Próstata / Entrenamiento de Fuerza Tipo de estudio: Clinical_trials Límite: Humans / Male Idioma: En Revista: Integr Cancer Ther Asunto de la revista: NEOPLASIAS / TERAPEUTICA Año: 2020 Tipo del documento: Article País de afiliación: Suecia

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Neoplasias de la Próstata / Entrenamiento de Fuerza Tipo de estudio: Clinical_trials Límite: Humans / Male Idioma: En Revista: Integr Cancer Ther Asunto de la revista: NEOPLASIAS / TERAPEUTICA Año: 2020 Tipo del documento: Article País de afiliación: Suecia