NCT07042932

Brief Summary

Advances in the medical treatment of childhood acute lymphoblastic leukemia (ALL) have resulted in 5-year survival rates above 90%- however, the success is not without consequences. Childhood ALL survivors experience markedly impaired physical capacity - reducing their opportunity to engage in everyday activities including leisure activities, sports, and school - affecting their quality of life. Furthermore, Childhood ALL survivors have markedly increased risk of chronic medical conditions including cardiometabolic diseases - that can be prevented through an active lifestyle. Thus, it is imperative to develop novel interventions that can mitigate these treatment-related late-effects. In this RCT, including 82 childhood ALL survivors (10-21 years-old), we will investigate a 26-week online exercise intervention combined with access to a lifestyle physical activity webpage, and health consultations on cardiorespiratory fitness (primary outcome) markers of metabolic syndrome, and physical activity habits. While other pilot studies have investigated the effects of exercise for childhood ALL survivors, this study is the first RCT internationally to investigate the effects of online exercise combined with education through an app and health counselling for childhood ALL survivor. Using this approach, we are geographically able to reach every survivor in our targeted population, thereby, minimizing logistic challenges like travel distances. This study has the potential to radically change the way physical rehabilitation is approached in childhood ALL survivors - Potentially changing the workflow of health professionals from referring only survivors with specific deficits to local physiotherapy to referring all survivors to an exercise program tailored to their needs. By improving the children's general physical capacity, we can give the children the required tools to re-enter everyday life activities, including school physical education, leisure activities, and sports earlier after treatment has ended - ultimately minimizing the social complications of treatment. This study will also answer the government´s call to digitalize 30% of rehabilitation by the 2030.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
82

participants targeted

Target at P50-P75 for not_applicable

Timeline
57mo left

Started Jul 2025

Longer than P75 for not_applicable

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress15%
Jul 2025Dec 2030

First Submitted

Initial submission to the registry

June 17, 2025

Completed
12 days until next milestone

First Posted

Study publicly available on registry

June 29, 2025

Completed
2 days until next milestone

Study Start

First participant enrolled

July 1, 2025

Completed
4.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2029

Expected
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2030

Last Updated

June 29, 2025

Status Verified

June 1, 2025

Enrollment Period

4.5 years

First QC Date

June 17, 2025

Last Update Submit

June 25, 2025

Conditions

Keywords

ExerciserehabilitationAcute lymphoblastic leukemiachildhood cancer survivors

Outcome Measures

Primary Outcomes (1)

  • cardiorespiratory fitness (VO2peak (ml/min/kg)

    The primary outcome is the difference in cardiorespiratory fitness (VO2peak (ml/min/kg)) between the intervention group and the waiting list control group after 26- weeks. VO2peak is defined as the highest mean over 30 s and expressed in mL/kg/min Furthermore, two objective criteria need to be fulfilled before the test is valid. The criteria are heart rate \>85% of estimated maximal heart rate and a respiratory exchange ratio (RER)\>1.1.

    at enrollment and 26 weeks after inclusion

Secondary Outcomes (16)

  • Physical activity and sedentary time

    at enrollment, 26 weeks after inclusion, 52 weeks after inclusion, 1 year- post intervention assessment

  • cardiorespiratory fitness (VO2peak (ml/min/kg)

    at 52 weeks after inclusion and 1-year post intervention

  • Lower extremity isometric knee extension strength:

    at enrolment, 26-weeks after inclusion, 52 weeks after inclusion, 1-year post intervention

  • Handgrip strength:

    at enrolment, 26 weeks after inclusion, 52 weeks after inclusion 1 year post intervention

  • Maximal Leg extension power:

    at enrollment, 26 weeks after inclusion, 52 weeks after inclusion, 1 year post intervention

  • +11 more secondary outcomes

Other Outcomes (2)

  • Qualitative evaluation of the interventions

    at 26 weeks after inclusion

  • General Physical Acivity: Self-Report

    at enrollment, 26 weeks after inclusion, 52 weeks after inclusion, 1 year post intervention

Study Arms (2)

Usual care

NO INTERVENTION

This arm will receive institutional follow-up care during the first 26 weeks. afterward they will receive the intervention

Exercise

OTHER

the intervention group will receive 26 weeks of online supervised exercise (1-2 sessions per week) + access to an 8 modele educational material on a webpage + weekly motivational counseling sessions

Other: Exercise

Interventions

26 weeks online high intensity functional training, performed 1-2 times per week + access to a LIFESTYLE PHYSICAL ACTIVITY WEBSITE including 8 modules; 1) Welcome, information about the intervention and the aims of the study, 2) Living a physically active lifestyle, 3) Sedentary behavior, 4) General exercise recommendations, 5) How to stay motivated, 6) Strength training, 7) flexibility, balance, and coordination, and 8) Healthy eating + weekly motivational counseling

Exercise

Eligibility Criteria

Age10 Years - 21 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • aged 10-21 years old,
  • at least one year from ended treatment of acute lymphoplastic leukemia
  • not adhering to WHO's recommendations for physical activity (i.e., 60 minutes of daily moderate-to-vigorous intensity physical activity including two weekly sessions of strength training for children and 150 minutes of moderate-to-vigorous intensity weekly for adults),
  • followed at the pediatric oncology out-patient clinic at Copenhagen University Hospital, Rigshospitalet.

You may not qualify if:

  • Children with a mental disability,
  • other severe physical co-morbidity contradicting physical exercise,
  • and/or terminal illness

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Precursor Cell Lymphoblastic Leukemia-LymphomaMotor Activity

Interventions

Exercise

Condition Hierarchy (Ancestors)

Leukemia, LymphoidLeukemiaNeoplasms by Histologic TypeNeoplasmsHematologic DiseasesHemic and Lymphatic DiseasesLymphoproliferative DisordersLymphatic DiseasesImmunoproliferative DisordersImmune System DiseasesBehavior

Intervention Hierarchy (Ancestors)

Motor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Study Officials

  • Martin K Fridh, Ph.D

    Rigshospitalet, Denmark

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Martin K Fridh, Ph.D.

CONTACT

Hanne B Larsen, Ph.D.

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
CROSSOVER
Model Details: The study is a randomized controlled trial with primary outcome of 26 weeks of exercise. Following primary outcome assessment, the control will receive the intervention components.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

June 17, 2025

First Posted

June 29, 2025

Study Start

July 1, 2025

Primary Completion (Estimated)

December 31, 2029

Study Completion (Estimated)

December 31, 2030

Last Updated

June 29, 2025

Record last verified: 2025-06

Data Sharing

IPD Sharing
Will share

following the final analyses of the study, the IPD will be available upon request

Shared Documents
STUDY PROTOCOL, SAP