Feedback Leads to Better Exercise Quality in Adolescents with Patellofemoral Pain

Henrik Riel, Mark Matthews, Bill Vicenzino, Thomas Bandholm, Kristian Thorborg, Michael Rathleff

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

PURPOSE: Adolescents with patellofemoral pain (PFP) do not comply with their exercise prescription, performing too few and too fast repetitions, compromising recovery. We investigated if real-time feedback on contraction time would improve the ability of adolescents with PFP to perform exercises as prescribed. METHODS: A randomized, controlled, participant-blinded, superiority trial with a 6-wk intervention of three weekly sessions of three elastic band exercises was undertaken. Forty 15- to 19-yr-old adolescents with PFP were randomized to real-time BandCizer™-iPad feedback on contraction time or not by a physiotherapist. The primary outcome was the mean deviation from the prescribed contraction time of 8 s per repetition. Secondary outcomes included isometric hip and knee strength, Kujala Patellofemoral Scale, and Global Rating of Change. RESULTS: The mean deviation from prescribed 8 s per repetition contraction time was 1.5 ± 0.5 s for the feedback group, compared with 4.3 ± 1.0 s for the control group (mean difference: 2.7 s (95% confidence interval = 2.2-3.2, P < 0.001). On the basis of total contraction time during the intervention, the feedback group received 35.4% of the prescribed exercise dose whereas the control group received 20.3%. Isometric hip and knee strength increased significantly more in the feedback group compared with controls (mean difference = 1.35 N·kg, 95% confidence interval = 0.02-2.68, P = 0.047). There were no significant differences in Kujala Patellofemoral Scale and Global Rating of Change between groups, but the study was not powered for this. CONCLUSION: Real-time feedback on contraction time resulted in the ability to perform exercises closer to the prescribed dose and also induced larger strength gains.
LanguageEnglish
Pages28-35
Number of pages7
JournalMedicine and Science in Sports and Exercise
Volume50
Issue number1
DOIs
Publication statusPublished - Aug 2017

Fingerprint

Exercise
Pain
Aptitude
Hip
Knee
Confidence Intervals
Control Groups
Physical Therapists
Prescriptions

Cite this

Riel, Henrik ; Matthews, Mark ; Vicenzino, Bill ; Bandholm, Thomas ; Thorborg, Kristian ; Rathleff, Michael. / Feedback Leads to Better Exercise Quality in Adolescents with Patellofemoral Pain. In: Medicine and Science in Sports and Exercise. 2017 ; Vol. 50, No. 1. pp. 28-35.
@article{49aee27a64db47d7a89b0a2d24b0c8f0,
title = "Feedback Leads to Better Exercise Quality in Adolescents with Patellofemoral Pain",
abstract = "PURPOSE: Adolescents with patellofemoral pain (PFP) do not comply with their exercise prescription, performing too few and too fast repetitions, compromising recovery. We investigated if real-time feedback on contraction time would improve the ability of adolescents with PFP to perform exercises as prescribed. METHODS: A randomized, controlled, participant-blinded, superiority trial with a 6-wk intervention of three weekly sessions of three elastic band exercises was undertaken. Forty 15- to 19-yr-old adolescents with PFP were randomized to real-time BandCizer™-iPad feedback on contraction time or not by a physiotherapist. The primary outcome was the mean deviation from the prescribed contraction time of 8 s per repetition. Secondary outcomes included isometric hip and knee strength, Kujala Patellofemoral Scale, and Global Rating of Change. RESULTS: The mean deviation from prescribed 8 s per repetition contraction time was 1.5 ± 0.5 s for the feedback group, compared with 4.3 ± 1.0 s for the control group (mean difference: 2.7 s (95{\%} confidence interval = 2.2-3.2, P < 0.001). On the basis of total contraction time during the intervention, the feedback group received 35.4{\%} of the prescribed exercise dose whereas the control group received 20.3{\%}. Isometric hip and knee strength increased significantly more in the feedback group compared with controls (mean difference = 1.35 N·kg, 95{\%} confidence interval = 0.02-2.68, P = 0.047). There were no significant differences in Kujala Patellofemoral Scale and Global Rating of Change between groups, but the study was not powered for this. CONCLUSION: Real-time feedback on contraction time resulted in the ability to perform exercises closer to the prescribed dose and also induced larger strength gains.",
author = "Henrik Riel and Mark Matthews and Bill Vicenzino and Thomas Bandholm and Kristian Thorborg and Michael Rathleff",
year = "2017",
month = "8",
doi = "doi: 10.1249/MSS.0000000000001412.",
language = "English",
volume = "50",
pages = "28--35",
journal = "Medicine and Science in Sports and Exercise",
issn = "0195-9131",
number = "1",

}

Feedback Leads to Better Exercise Quality in Adolescents with Patellofemoral Pain. / Riel, Henrik; Matthews, Mark; Vicenzino, Bill; Bandholm, Thomas; Thorborg, Kristian; Rathleff, Michael.

In: Medicine and Science in Sports and Exercise, Vol. 50, No. 1, 08.2017, p. 28-35.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Feedback Leads to Better Exercise Quality in Adolescents with Patellofemoral Pain

AU - Riel, Henrik

AU - Matthews, Mark

AU - Vicenzino, Bill

AU - Bandholm, Thomas

AU - Thorborg, Kristian

AU - Rathleff, Michael

PY - 2017/8

Y1 - 2017/8

N2 - PURPOSE: Adolescents with patellofemoral pain (PFP) do not comply with their exercise prescription, performing too few and too fast repetitions, compromising recovery. We investigated if real-time feedback on contraction time would improve the ability of adolescents with PFP to perform exercises as prescribed. METHODS: A randomized, controlled, participant-blinded, superiority trial with a 6-wk intervention of three weekly sessions of three elastic band exercises was undertaken. Forty 15- to 19-yr-old adolescents with PFP were randomized to real-time BandCizer™-iPad feedback on contraction time or not by a physiotherapist. The primary outcome was the mean deviation from the prescribed contraction time of 8 s per repetition. Secondary outcomes included isometric hip and knee strength, Kujala Patellofemoral Scale, and Global Rating of Change. RESULTS: The mean deviation from prescribed 8 s per repetition contraction time was 1.5 ± 0.5 s for the feedback group, compared with 4.3 ± 1.0 s for the control group (mean difference: 2.7 s (95% confidence interval = 2.2-3.2, P < 0.001). On the basis of total contraction time during the intervention, the feedback group received 35.4% of the prescribed exercise dose whereas the control group received 20.3%. Isometric hip and knee strength increased significantly more in the feedback group compared with controls (mean difference = 1.35 N·kg, 95% confidence interval = 0.02-2.68, P = 0.047). There were no significant differences in Kujala Patellofemoral Scale and Global Rating of Change between groups, but the study was not powered for this. CONCLUSION: Real-time feedback on contraction time resulted in the ability to perform exercises closer to the prescribed dose and also induced larger strength gains.

AB - PURPOSE: Adolescents with patellofemoral pain (PFP) do not comply with their exercise prescription, performing too few and too fast repetitions, compromising recovery. We investigated if real-time feedback on contraction time would improve the ability of adolescents with PFP to perform exercises as prescribed. METHODS: A randomized, controlled, participant-blinded, superiority trial with a 6-wk intervention of three weekly sessions of three elastic band exercises was undertaken. Forty 15- to 19-yr-old adolescents with PFP were randomized to real-time BandCizer™-iPad feedback on contraction time or not by a physiotherapist. The primary outcome was the mean deviation from the prescribed contraction time of 8 s per repetition. Secondary outcomes included isometric hip and knee strength, Kujala Patellofemoral Scale, and Global Rating of Change. RESULTS: The mean deviation from prescribed 8 s per repetition contraction time was 1.5 ± 0.5 s for the feedback group, compared with 4.3 ± 1.0 s for the control group (mean difference: 2.7 s (95% confidence interval = 2.2-3.2, P < 0.001). On the basis of total contraction time during the intervention, the feedback group received 35.4% of the prescribed exercise dose whereas the control group received 20.3%. Isometric hip and knee strength increased significantly more in the feedback group compared with controls (mean difference = 1.35 N·kg, 95% confidence interval = 0.02-2.68, P = 0.047). There were no significant differences in Kujala Patellofemoral Scale and Global Rating of Change between groups, but the study was not powered for this. CONCLUSION: Real-time feedback on contraction time resulted in the ability to perform exercises closer to the prescribed dose and also induced larger strength gains.

U2 - doi: 10.1249/MSS.0000000000001412.

DO - doi: 10.1249/MSS.0000000000001412.

M3 - Article

VL - 50

SP - 28

EP - 35

JO - Medicine and Science in Sports and Exercise

T2 - Medicine and Science in Sports and Exercise

JF - Medicine and Science in Sports and Exercise

SN - 0195-9131

IS - 1

ER -