An Intervention to Reduce Sedentary Behavior and Promote Physical Activity in Colorectal Cancer Chemotherapy
Development and Feasibility Evaluation of an Intervention to Reduce Sedentary Behavior and Promote Physical Activity in Patients With Colorectal Cancer Undergoing Chemotherapy
This single-group feasibility study develops and evaluates an intervention designed to reduce sedentary behavior and promote physical activity in patients with colorectal cancer undergoing chemotherapy. During chemotherapy, treatment-related symptoms such as fatigue often lead to reduced physical activity and prolonged sitting time. Replacing sedentary time with light-intensity movement is associated with improved metabolic outcomes and a lower risk of several chronic conditions, including cancer. The intervention is developed using the Capability, Opportunity, Motivation-Behavior (COM-B) model and the Behavior Change Wheel (BCW), and is delivered over 3 weeks using a smartwatch. It comprises smartwatch-based prompts to interrupt prolonged sitting, symptom assessment and symptom-management education, and feedback on physical activity and sedentary behavior. Sedentary behavior and physical activity are measured objectively by smartwatch continuously before, during, and after the 3-week intervention. The primary aim is to evaluate the feasibility of the intervention across the domains of acceptability, demand, implementation, and practicality. Secondary aims explore preliminary changes in physical activity, sedentary behavior, symptoms, health-related quality of life, and self-efficacy to reduce sedentary behavior. The findings are intended to inform the development of future interventions and nursing care to support health management in patients with cancer.
Aperçu de l'étude
Statut
Statut
Les conditions
Les conditions
Intervention / Traitement
Intervention / Traitement
Description détaillée
Background and rationale: Patients with colorectal cancer undergoing chemotherapy frequently experience symptoms such as fatigue that reduce physical activity and increase sedentary time. Prolonged sedentary behavior is independently associated with adverse health outcomes, whereas replacing sitting with light-intensity activity confers metabolic and other health benefits. Reducing sedentary behavior is a feasible, low-burden behavioral target that may be more attainable than structured exercise during active treatment. Continuous, objective monitoring of activity and symptoms using a wearable device, combined with tailored feedback, offers a practical approach for this population.
Objective: To develop a Capability, Opportunity, Motivation-Behavior (COM-B) based intervention to reduce sedentary behavior and promote physical activity in patients with colorectal cancer undergoing chemotherapy, and to evaluate its feasibility.
Intervention development: The intervention is developed using the COM-B model and the Behavior Change Wheel (BCW). A behavioral diagnosis is conducted across the COM-B components (capability, opportunity, motivation). Relevant intervention functions (education, training, enablement, environmental restructuring) and behavior change techniques (e.g., prompts/cues, self-monitoring of behavior, feedback on behavior, goal setting, problem solving, action planning, information about health consequences, verbal persuasion about capability, social rewards) are selected and mapped to interrupt prolonged sitting. The draft intervention undergoes expert review, and content validity is assessed using a 4-point scale with reference to the Item-level Content Validity Index (I-CVI) and Scale-level Content Validity Index (S-CVI); the intervention is refined based on expert feedback.
Study design and procedure: A single-group, non-randomized feasibility study with a pre-post test design is conducted. After providing written informed consent and confirming eligibility, each participant receives a study-provided smartwatch and participates in a 3-week intervention. Sedentary behavior and physical activity are recorded objectively by the smartwatch continuously for 3 weeks before, during, and 3 weeks after the intervention. The intervention comprises five core components, with the central target of interrupting prolonged sitting: when 60 minutes of continuous sitting is detected during waking hours, the participant is prompted to perform at least 1-2 minutes of light-intensity activity. The components are: (1) smartwatch-based sedentary prompts (vibration alerts after 60 minutes of continuous sitting, with guided light-activity options); (2) self-monitoring of sedentary behavior and physical activity via the smartwatch app; (3) structured weekly nurse feedback delivered by telephone (10-15 minutes; reviewing weekly activity data, reinforcing successes, and setting condition-adjusted goals); (4) weekly electronic symptom monitoring using the ESAS-r Cancer; and (5) tailored symptom-management education addressing treatment-related symptoms (e.g., fatigue, pain) as key barriers to reducing sedentary behavior. Survey-based outcomes are assessed at two time points (pre- and post-intervention) to enable pre-post comparison, scheduled to coincide with routine outpatient visits, so no additional hospital visits are required.
Measurements: Objective sedentary behavior and physical activity (smartwatch); subjective physical activity (GPAQ); symptoms and quality of life (EORTC QLQ-C30 & CR29); self-efficacy to reduce sedentary behavior (SRSB); and feasibility of the intervention (acceptability, demand, implementation, practicality).
Sample size: Forty participants are enrolled. Statistical analysis: Data are analyzed using SPSS/WIN 29.0 (alpha = .05). General and clinical characteristics and all feasibility outcomes are summarized using descriptive statistics. As exploratory secondary analyses, changes in objective sedentary behavior and physical activity across the three time points (pre-, during, and post-intervention) are analyzed using repeated-measures ANOVA, and survey-based outcomes measured at two time points are compared using ANCOVA.
Type d'étude
Type d'étude
Inscription (Estimé)
Inscription
Phase
Phase
- N'est pas applicable
Contacts et emplacements
Coordonnées de l'étude
Coordonnées de l'étude
- Nom: Jiyeon Lee, Professor
- Numéro de téléphone: +82-2-2228-3255
- E-mail: Jiyeonest@yuhs.ac
Critères de participation
Critère d'éligibilité
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Diagnosed with colorectal cancer (stage 2 or 3) and scheduled to receive or currently receiving chemotherapy
- Able to use a smartwatch and respond to smartphone-based surveys
- Able to read and understand Korean and provide written informed consent
- ECOG performance status of 0 or 1
Exclusion Criteria:
- Newly advised by the attending physician to restrict physical activity
- Any injury or condition that, in the investigator's judgment, makes study participation inappropriate
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Recherche sur les services de santé
- Répartition: N / A
- Modèle interventionnel: Affectation à un seul groupe
- Masquage: Aucun (étiquette ouverte)
Nombre de bras
Armes et Interventions
Groupe de participants / BrasGroupe de participants / Bras |
Intervention / TraitementIntervention / Traitement |
|---|---|
|
Expérimental: Intervention group
All participants receive the 3-week smartwatch-based behavioral intervention to reduce sedentary behavior and promote physical activity. Sedentary behavior and physical activity are monitored using the smartwatch for 3 weeks before, throughout, and for 3 weeks after the intervention. |
A 3-week, COM-B based behavioral intervention delivered via a smartwatch, primarily targeting the interruption of prolonged sitting: when 60 minutes of continuous sitting is detected during waking hours, the participant is prompted to perform at least 1-2 minutes of light-intensity activity. It comprises five core components: (1) smartwatch-based sedentary prompts (vibration alerts after 60 minutes of continuous sitting, with guided light-activity options); (2) self-monitoring of sedentary behavior and physical activity; (3) structured weekly nurse feedback by telephone (10-15 minutes; reviewing weekly activity data, reinforcing successes, and setting condition-adjusted goals); (4) weekly electronic symptom monitoring using the ESAS-r Cancer; and (5) tailored symptom-management education addressing treatment-related symptoms (e.g., fatigue, pain) as key barriers to reducing sedentary behavior. |
Que mesure l'étude ?
Principaux critères de jugement
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Feasibility of the intervention: acceptability
Délai: At 3 weeks after intervention start (immediately following completion of the intervention)
|
Acceptability: satisfaction/ease/burden/recommendation, 5-point Likert |
At 3 weeks after intervention start (immediately following completion of the intervention)
|
|
Feasibility of the intervention: demand (1) Recruitment rate
Délai: At enrollment (baseline)
|
enrolled participants / eligible individuals approached (%) |
At enrollment (baseline)
|
|
Feasibility of the intervention: demand (2) Retention rate
Délai: At 3 weeks after intervention start (immediately following completion of the intervention)
|
participants completing the post-intervention assessment / enrolled participants (%) |
At 3 weeks after intervention start (immediately following completion of the intervention)
|
|
Feasibility of the intervention: implementation (intervention adherence rate)
Délai: At 3 weeks after intervention start (immediately following completion of the intervention)
|
overall adherence rate to intervention components (%) |
At 3 weeks after intervention start (immediately following completion of the intervention)
|
|
Feasibility of the intervention: practicality
Délai: At 3 weeks after intervention start (immediately following completion of the intervention)
|
CTCAE-graded adverse events and technical faults (n) |
At 3 weeks after intervention start (immediately following completion of the intervention)
|
Mesures de résultats secondaires
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Change from baseline in sedentary behavior
Délai: Three weeks before, throughout the 3-week intervention, and three weeks after the intervention.
|
Sedentary time (min/day) |
Three weeks before, throughout the 3-week intervention, and three weeks after the intervention.
|
|
Change from baseline in physical activity
Délai: Three weeks before, throughout the 3-week intervention, and three weeks after the intervention.
|
Physical activity time (min/day) |
Three weeks before, throughout the 3-week intervention, and three weeks after the intervention.
|
|
Change from baseline in symptoms at 3 weeks
Délai: Baseline and 3 weeks after intervention start
|
EORTC QLQ-C30/CR29 symptom scales (0-100; higher scores indicate worse symptoms) |
Baseline and 3 weeks after intervention start
|
|
Change from baseline in quality of life at 3 weeks
Délai: Baseline and 3 weeks after intervention start
|
EORTC QLQ-C30 global health status/QoL scale (0-100; higher scores indicate better quality of life) |
Baseline and 3 weeks after intervention start
|
|
Change from baseline in self-efficacy to reduce sedentary behavior at 3 weeks
Délai: Baseline and 3 weeks after intervention start
|
Self-Efficacy to Reduce Sedentary Behavior (SRSB) Questionnaire (9-item mean score, 1-5; higher scores indicate greater self-efficacy) |
Baseline and 3 weeks after intervention start
|
Collaborateurs et enquêteurs
Parrainer
Parrainer
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Début de l'étude
Achèvement primaire (Estimé)
Achèvement primaire
Achèvement de l'étude (Estimé)
Achèvement de l'étude
Dates d'inscription aux études
Première soumission
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Première publication
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour publiée
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
Autres numéros d'identification d'étude
- 4-2026-0040
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Informations sur les médicaments et les dispositifs, documents d'étude
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