Combined Effects of Dual-task and Perturbation Based Training on Balance and Cognition in Stroke Patients

NCT ID: NCT07328867

Last Updated: 2026-01-09

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 33 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-06-14
• Study Completion Date: 2025-12-10

Brief Summary

This study aims to evaluate the Combined Effects of Dual-task and Perturbation Baesd Training on Balance and Cognition in Stroke Patients. Stroke is an acute cerebrovascular disorder that can impair cognitive, motor, and balanace abilites. Stroke is the second largest cause of death and disability globally. According tp studies, people who have had a stroke are more likely to fall than others who are same age and gender. PBBT is known as artificially induced balance training technique that can mimics the loss of balance that can occur naturally in freal life. Reduction in falls has been reported broadly by the use of perturbation based balance training. Current study will be and RCT on 33 participants based on the inclusion critieria. Participants will be randomly and equally divided into two groups; group B receiving Perturbation Based Training Alone and Group A receiving Dual-task and Perturbation Based Balance Training. The treatment will be given for 40 minutes, 3 days a week for 6 consecutive weeks. The assessment will be conducted at baseline, for cognition by Montreal Cognitive Assessment Scale (MoCA), for initial treadmill speed 10 Meter Walk Test (10MWT), for balance by Berg Balance Scale (BBS), and for fall riak by Fall Efficacy Scale (FES). Final assessment will be conducted after 6 weeks.

Detailed Description

Stroke is a multifaceted disease that can be caused by a variety of risk factors, disease processes and causes. Stroke results in the change of cognitive function, which effects resulting in minor impairment to the development of post-stroke dementia. The cognitive deficiencies in a stroke survivors have significant influence on their daily productivity. In addition, falls are a prevalent and potentially fatal issue for as many as 47% of all stroke patients admitted to the hospital.Some studies suggest that Dual-task training when paired with mechanical action of treadmill could maximize the constraint on the cognitive control processes for gait.

Conditions

Stroke; Balance; Cognition; Fall Risk

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Dual-task and Perturbation Based Training

1. Participants in the experimental group received combined perturbation and dual task training

2. The intervention was conducted for 3 days a week for 6 consecutive weeks

3. Each treatment session lasted approximately 40 minutes including 5 minute of warmup and 2 minutes of rest between 2 segments

4. Primary training modality was treadmill

5. Initial walking speed was determined individually for each participant by using 10MWT

6. Perturbations were applied manually during treadmill walking

7. The intensity of treadmill was progressively increased across sessions by change in directions of perturbations, unpredictability, walking speed and reducing hand support when safe

8. Dual-task training is added after 3 session and will be performed concurrently with perturbation training.

9. Cognitive tasks include counting backwards, naming animals, subtracting 3 from 100.

10. The complexity of the task will progressively increased

11. Safety should be ensured by using the harness

Group Type: EXPERIMENTAL

Perturbation + Dual-Task Training

Intervention Type: PROCEDURE

The intervention program spans six weeks and involves both supervised Perturbation sessions and Dual-Task training exercises. Participants will attend three supervised Perturbation based training per week, with each session consisting of two 8-minute segments of the training.

In addition, participants will perform Dual-Task training and perturbations on treadmill, with each cycle consisting of two segments. This combination of supervised practice will be increased progressively throughout all six weeks. Across the entire program, participants will complete a total of 18 supervised perturbation based balance training and 18 Dual-task training sessions.

Perturbation Based Training

1. Participants in control group received Perturbation Baesd Training Alone

2. The intervention was conducted for 3 days a week for 6 consecutive weeks

3. Each treatment session lasted 40 minutes including 5 minute of warm up and 2 minute of rest between segments

4. Primary training modality was treadmill

5. Initial walking speed was determined individually for each participant by using 10MWT

6. Perturbations were appllied manually during treadmill walking

7. The intensity of treadmill was progressively increased across sessions by chanfe in directions of perturbations, unpredictability, walking speed and reducing hand support when safe

8. Safety should be ensured by using the harness, keeping emergency stop at reach, and use of handrails when necessary

Group Type: ACTIVE_COMPARATOR

Perturbation-Based Training

Intervention Type: PROCEDURE

The control group will participate in a structured six-week intervention program consisting exclusively of the Perturbation Based Balance Training. Participants will attend three supervised sessions per week, ensuring consistent oversight and proper technique throughout the program. Each session will began with a warm-up period, followed by two 8-minute segments of perturbation-based treadmill training, with participants allowed a rest period of 60 second to 2 minute between repetitions to prevent fatigue and maintain the quality of each movement. The frequency is maintained consistently, however, perturbations dosage was progressively increased across all six weeks to provide a standardized exposure, allowing for accurate comparison with other intervention groups. Over the entire six-week period, participants will complete a total of 18 supervised sessions, each with three repetitions, summing up to 108 bouts across the intervention.

Interventions

Perturbation-Based Training

The control group will participate in a structured six-week intervention program consisting exclusively of the Perturbation Based Balance Training. Participants will attend three supervised sessions per week, ensuring consistent oversight and proper technique throughout the program. Each session will began with a warm-up period, followed by two 8-minute segments of perturbation-based treadmill training, with participants allowed a rest period of 60 second to 2 minute between repetitions to prevent fatigue and maintain the quality of each movement. The frequency is maintained consistently, however, perturbations dosage was progressively increased across all six weeks to provide a standardized exposure, allowing for accurate comparison with other intervention groups. Over the entire six-week period, participants will complete a total of 18 supervised sessions, each with three repetitions, summing up to 108 bouts across the intervention.

Intervention Type: PROCEDURE

Perturbation + Dual-Task Training

The intervention program spans six weeks and involves both supervised Perturbation sessions and Dual-Task training exercises. Participants will attend three supervised Perturbation based training per week, with each session consisting of two 8-minute segments of the training.

In addition, participants will perform Dual-Task training and perturbations on treadmill, with each cycle consisting of two segments. This combination of supervised practice will be increased progressively throughout all six weeks. Across the entire program, participants will complete a total of 18 supervised perturbation based balance training and 18 Dual-task training sessions.

Intervention Type: PROCEDURE

Eligibility Criteria

Inclusion Criteria

• No limitation of genders.
• Age between 25-80 years
• Participants diagnosed with chronic stroke
• Participants being able to walk with or without walking aid independently or under supervision
• Participants with impaired balance as indicated by a score of <=41 on BBS
• Participants with Montreal Cognitive Assessment Score <26

Exclusion Criteria

• Patient with sinificant co morbidties or secondary complications including orthopedic or rheumatological disorders were excluded
• Patients with severe cognitive impairment or dementia
• Apraxia or hemi-neglect
• Participants with body weight >100kg
• Participants with significant visual or hearing impairments
• Patients with epilepsy or pacemaker
• Participants with peripheral or central neuropathies that could impair balance

• Minimum Eligible Age: 25 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Foundation University Islamabad

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Foundation University College of Physical Therapy

Islamabad, , Pakistan

Countries

Pakistan

Other Identifiers

FUI/CTR/2025/16

Identifier Type: -

Identifier Source: org_study_id