Live Feedback to Increase Adherence in Adolescents With Patellofemoral Pain

Aalborg University40 enrolled

Overview

This study investigates if live feedback during home-based exercises will improve the ability to perform the exercises with the prescribed time under tension (TUT) per repetition compared with no feedback among adolescents with patellofemoral pain. The hypothesis is that adolescents who receive live feedback from BandCizer™ will have a mean TUT that is significantly closer to the prescribed TUT compared to the group not receiving feedback during the course of the intervention.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Patellofemoral Pain Syndrome Musculoskeletal Disorders Joint Diseases

Interventions

Feedback on TUTOTHER

Access to live visual and auditory feedback on TUT and pulling force from an application on an iPad.

No feedback on TUTOTHER

Access only to live visual feedback on pulling force from an application on an iPad.

ExerciseOTHER

3 exercises (knee extension, hip abduction and hip extension) using an elastic band with 3 sets of 10 repetitions at 10-12 RM 3 times a week for 6 weeks.

Eligibility

Sex: ALLMin age: 15 YearsMax age: 19 Years

Medical Language ↔ Plain English

Inclusion Criteria: * 15 to 19 years of age * Anterior knee pain of non-traumatic origin which is provoked by at least two of the following activities: prolonged sitting with bended knees or kneeling, squatting, running, jumping or ascending or descending stairs * Tenderness on palpation of the peripatellar borders * Pain of more than 6 weeks duration * Worst pain during the previous week ≥ 30 mm on a 100 mm VAS Exclusion Criteria: * Concomitant pain from other structures in the knee (e.g. ligament, tendon or cartilage), the hip or the lumbar spine * Previous knee surgery * Patellofemoral instability

Locations (1)

Aalborg Universitetshospital

Aalborg, The North Denmark Region, Denmark

Outcomes

Primary Outcomes

Mean deviation from the prescribed TUT per repetition in seconds during the course of the intervention

The mean deviation is calculated as the difference between actual TUT and prescribed TUT (8 seconds). E.g. if the actual TUT is 6.5 seconds, the deviation is 1.5 seconds

Time frame: From 0-6 weeks

Secondary Outcomes

The total number of repetitions performed

Time frame: From 0-6 weeks

Pulling force exerted per repetition measured in kilos

This will be expressed as the maximum pulling force during each repetition

Time frame: From 0-6 weeks

Isometric strength

Presented as Nm/kg in x, y and z direction

Time frame: At baseline and at the 6 week follow up

Pain measured on a 100 mm VAS

Is entered into the app by the adolescent before and after each exercise

Time frame: From 0-6 weeks

Kujala Patellofemoral Scale-score

Gives a score on patellofemoral pain ranging from 0 to 100 with 0 as complete disability and 100 as fully functional

Time frame: At baseline and at the 6 week follow up

Global rating of change

Self-reported recovery on a 7-point Likert scale ranging from "much improved" to "much worse"

Time frame: At the 6 week follow up

Summary of resistance

Total pulling force exerted during the course of the intervention measured in kilos

Data from ClinicalTrials.gov

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