Pan African Clinical Trials Registry
South African Medical Research Council, South African Cochrane Centre
PO Box 19070, Tygerberg, 7505, South Africa
Telephone: +27 21 938 0506 / +27 21 938 0834 Fax: +27 21 938 0836
Email: pactradmin@mrc.ac.za Website: pactr.samrc.ac.za
Trial no.: PACTR202604573133790 Date of Registration: 22/04/2026
Trial Status: Registered in accordance with WHO and ICMJE standards
TRIAL DESCRIPTION
Public title feasibility and preliminary testing of rebound exercise on cardiopulmonary health, lower limb health and disability among multimorbid older adults: a pilot study
Official scientific title feasibility and preliminary testing of rebound exercise on cardiopulmonary health, lower limb health and disability among multimorbid older adults: a pilot study
Brief summary describing the background and objectives of the trial Exercise is widely recognised as an effective non-pharmacological strategy for reducing functional decline in ageing and multimorbidity. Research suggests that structured physical activity improves cardiopulmonary capacity, muscular strength, mobility, and quality of life. Rebound exercise, a low-impact activity performed on a mini-trampoline, has emerged as a potentially accessible alternative; however, evidence in multimorbid older adults remains limited, particularly regarding feasibility and multi-domain outcomes in low-resource settings. This study therefore examines the feasibility and preliminary effects of a structured rebound exercise programme on cardiopulmonary function, lower-limb performance, and disability among community-dwelling multimorbid older adults.
Type of trial RCT
Acronym (If the trial has an acronym then please provide) RCT
Disease(s) or condition(s) being studied Geriatric
Sub-Disease(s) or condition(s) being studied
Purpose of the trial Rehabilitation
Anticipated trial start date 01/06/2026
Actual trial start date 01/06/2026
Anticipated date of last follow up 01/06/2027
Actual Last follow-up date 01/06/2027
Anticipated target sample size (number of participants) 30
Actual target sample size (number of participants)
Recruitment status Not yet recruiting
Publication URL
Secondary Ids Issuing authority/Trial register
STUDY DESIGN
Intervention assignment Allocation to intervention If randomised, describe how the allocation sequence was generated Describe how the allocation sequence/code was concealed from the person allocating the participants to the intervention arms Masking If masking / blinding was used
Parallel: different groups receive different interventions at same time during study Randomised Simple randomization using by using procedures such as coin-tossing or dice-rolling Sealed opaque envelopes Masking/blinding used Outcome Assessors
INTERVENTIONS
Intervention type Intervention name Dose Duration Intervention description Group size Nature of control
Experimental Group REBOUND EXERCISE • Frequency: 3 sessions per week • Duration: 30–40 minutes per session • Intensity: moderate (guided by Borg scale) Length: 8weeks Structured Healthy bounce rebound exercise programme performed on a mini-trampoline with support handle. 15
Control Group conventional clinic exercises • Frequency: 3 sessions per week • Duration: 30–40 minutes per session • Intensity: moderate (guided by Borg scale) Length: 8–12 weeks Participants receive conventional clinic exercises, such as: • Walking exercises • Strength training • Balance training • Flexibility exercises 15 Active-Treatment of Control Group
ELIGIBILITY CRITERIA
List inclusion criteria List exclusion criteria Age Category Minimum age Maximum age Gender
Inclusion criteria • Age ≥ 60 years • Presence of two or more chronic conditions (multimorbidity) • Medically stable and cleared for exercise • Able to ambulate with or without assistive devices • Cognitive soundness, defined as a score of ≥24 out of 30 on the Mini-Mental State Examination. •Unstable or uncontrolled cardiovascular conditions • Severe balance impairment preventing safe exercise • Neurological conditions that impair balance, coordination, or postural control (e.g., stroke, Parkinsonian syndromes), resulting in exclusion due to increased fall risk during rebound exercise. • Severe lower-limb musculoskeletal disorders that limit weight-bearing, joint stability, or functional mobility, thereby restricting safe participation. • Severe upper-limb musculoskeletal disorders that compromise grip, support, or balance assistance, limiting safe execution of rebound exercise tasks. Aged: 65 Year(s)-79 Year(s),Middle Aged: 45 Year(s)-64 Year(s) 60 Year(s) 75 Year(s) Both
ETHICS APPROVAL
Has the study received appropriate ethics committee approval Date the study will be submitted for approval Date of approval Name of the ethics committee
No 01/05/2026 Health Research Ethics Committee HREC
Ethics Committee Address
Street address City Postal code Country
Idi-araba Lagos 102215 Nigeria
OUTCOMES
Type of outcome Outcome Timepoint(s) at which outcome measured
Primary Outcome 1.Cardiopulmonary health. VO₂max (estimated), Heart rate recovery, Six-Minute Walk distance All outcomes will be assessed at baseline, 4 weeks and at 8 weeks. Heart rate recovery will be measured following a standardized exercise bout at each assessment point.
Secondary Outcome 1. Lower limb health. Gait speed, functional lower-limb muscle strength 2. Disability. WHODAS 2.0 3. Feasibility outcomes. Adherence (session attendance %), perceived usability of a system or intervention specifically, in terms of ease of use and Learnability. All outcomes will be assessed at baseline, 4 weeks and at 8 weeks, while safety and adherence will be monitored at 4 weeks and 8 weeks.
RECRUITMENT CENTRES
Name of recruitment centre Street address City Postal code Country
LAGOS UNIVERSITY TEACHING HOSPITAL Idi-araba. Lagos Nigeria
FUNDING SOURCES
Name of source Street address City Postal code Country
IGWE Chizoba Favour College of Medcine University of Lagos Lagos 102215 Nigeria
SPONSORS
Sponsor level Name Street address City Postal code Country Nature of sponsor
Primary Sponsor IGWE Chizoba Favour College of Medcine University of Lagos Lagos 102215 Nigeria Individual
COLLABORATORS
Name Street address City Postal code Country
CONTACT PEOPLE
Role Name Email Phone Street address
Principal Investigator Chizoba Favour IGWE cigwe@unilag.edu.ng +2348037300297 College of Medcine University of Lagos
City Postal code Country Position/Affiliation
Lagos 102215 Nigeria Researcher
Role Name Email Phone Street address
Scientific Enquiries Chizoba Favour IGWE cigwe@unilag.edu.ng +2348037300297 College of Medcine University of Lagos, Idi-araba
City Postal code Country Position/Affiliation
Lagos 102215 Nigeria Researcher
Role Name Email Phone Street address
Public Enquiries Chizoba Favour IGWE cigwe@unilag.edu.ng +2348037300297 College of Medcine University of Lagos, Idi-araba
City Postal code Country Position/Affiliation
Lagos 102215 Nigeria Researcher
REPORTING
Share IPD Description Additional Document Types Sharing Time Frame Key Access Criteria
Yes Individual participant data will be made available. Individual participant data that underline the results reported in this article, after deidentification (text, tables, figures and appendices) will be shared. Statistical Analysis Plan,Study Protocol Immediately following publication. No end date. Researchers who provide a methodological sound proposal to achieve aims in the research proposal.
URL Results Available Results Summary Result Posting Date First Journal Publication Date
No
Result Upload 1: Result Upload 2: Result Upload 3: Result Upload 4: Result Upload 5:
Result URL Hyperlinks Link To Protocol
Result URL Hyperlinks
Changes to trial information
Section Name Field Name Date Reason Old Value Updated Value
Trial Information Public title 30/03/2026 I changed this from capital to align with the guidelines of submission. FEASIBILITY AND PRELIMINARY TESTING OF REBOUND EXERCISE ON CARDIOPULMONARY HEALTH, LOWER LIMB HEALTH AND DISABILITY AMONG MULTIMORBID OLDER ADULTS: A PILOT STUDY Feasibility and Preliminary Testing of Rebound Exercise on Cardiopulmonary Health, Lower Limb Health And Disability among Multimorbid Older Adults: A Pilot Study
Section Name Field Name Date Reason Old Value Updated Value
Trial Information Public title 01/04/2026 To align with protocol format Feasibility and Preliminary Testing of Rebound Exercise on Cardiopulmonary Health, Lower Limb Health And Disability among Multimorbid Older Adults: A Pilot Study feasibility and preliminary testing of rebound exercise on cardiopulmonary health, lower limb health and disability among multimorbid older adults: a pilot study
Section Name Field Name Date Reason Old Value Updated Value
Trial Information Official scientific title 30/03/2026 I changed this from capital to align with the guidelines of submission. FEASIBILITY AND PRELIMINARY TESTING OF REBOUND EXERCISE ON CARDIOPULMONARY HEALTH, LOWER LIMB HEALTH AND DISABILITY AMONG MULTIMORBID OLDER ADULTS: A PILOT STUDY Feasibility and Preliminary Testing of Rebound Exercise on Cardiopulmonary Health, Lower Limb Health And Disability among Multimorbid Older Adults: A Pilot Study
Section Name Field Name Date Reason Old Value Updated Value
Trial Information Official scientific title 01/04/2026 To align with protocol format Feasibility and Preliminary Testing of Rebound Exercise on Cardiopulmonary Health, Lower Limb Health And Disability among Multimorbid Older Adults: A Pilot Study feasibility and preliminary testing of rebound exercise on cardiopulmonary health, lower limb health and disability among multimorbid older adults: a pilot study
Section Name Field Name Date Reason Old Value Updated Value
Eligibility Age group 22/04/2026 PACTR Admin Aged: 65+ Year(s) Middle Aged: 45 Year(s)-64 Year(s), Aged: 65+ Year(s)
Section Name Field Name Date Reason Old Value Updated Value
Ethics Ethics List 30/03/2026 To align with registration guideline FALSE, Health Research Ethics Committee HREC, Idi-araba, Lagos, 102215, Nigeria, 01 May 2026, , +2348037300297, cigwe@unilag.edu.ng, FALSE, Health Research Ethics Committee HREC, Idi-araba, Lagos, 102215, Nigeria, 01 May 2026, , +2348037300297, hrec@cmul.edu.ng,