The Effect of Home-based Velocity Training in Individuals With Total Knee Replacement (TKR)
The purpose of this study will be to find out the effect of two different interventions on muscle strength, ability to produce muscle force quickly (power), daily function, and number of steps and physical activity an individual with total knee replacement do daily.
The research hypotheses for this study will be as follows:
- For individuals who are at least 6 months post-total knee replacement, home-based high-velocity training exercises will result in significantly greater improvements in muscle strength and power compared to those who receive a walking program only.
- For individuals who are at least 6 months post-total knee replacement, home based high-velocity training exercises will result in significantly greater improvements of daily function(eg. sit to stand, climb a set of stairs)than those who receive a walking program only.
- For individuals who are at least 6 months post-total knee replacement, home based high-velocity training exercises will result in significantly greater improvements in physical activity behavior (eg. number of steps per day)compared to those who receive a walking program only.
|Total Knee Arthroplasty||Other: Exercises plus walking program Other: Walking only program|
|Study Design:||Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Single (Investigator)
Primary Purpose: Treatment
|Official Title:||The Effect of Home-Based High-Velocity Training on Muscle Strength and Power, Functional Performance, and Physical Activity Behavior in Individuals With Total Knee Arthroplasty.|
- Muscle Power [ Time Frame: Baseline and 8 weeks ]Change in quadriceps muscle power (force versus velocity)
- muscle strength [ Time Frame: Baseline and 8 weeks ]Change in quadriceps muscle strength.
- Functional Performance [ Time Frame: Baseline and 8 weeks ]Change the ability to perform the stair climb test faster and walking a further distance during the 6 minute walking test.
- Physical activity behavior [ Time Frame: Baseline and 8 weeks ]increase the number of steps per day and the minutes of moderate and/or vigorous physical activities.
|Study Start Date:||March 2013|
|Estimated Study Completion Date:||May 2017|
|Estimated Primary Completion Date:||May 2017 (Final data collection date for primary outcome measure)|
Experimental: Intervention group
Home exercise program plus walking program during 8-week period
Other: Exercises plus walking program
Exercise group Consist of functional exercises such as mini-squats, sit to stand, and exercises with use of thera-bands. For each exercise, participants will be taught to perform the concentric phase forcefully and as fast as they can and return to the initial position slowly and with control. Participants will be asked to perform the exercises 3 times per week as a home exercise program daily throughout the 8-week intervention period. Additionally, they will be asked to wear a pedometer daily throughout the 8-week intervention to monitor steps. A step goal will be provided to gradually increase daily to become "somewhat active" or "active" by the end of the 8-week intervention.
Active Comparator: Comparison group
Walking only program throughout the 8-week period.
Other: Walking only program
Participants will be asked to wear a pedometer and instructions for use just as the exercise group. They will also will given a step goal just as the participants in the exercise group and will similarly be asked to record number of steps form their pedometer in a daily log along with the minutes of moderate and vigorous physical activity throughout the 8-week intervention period.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01808781
|Contact: Emerenciana S Hines, PhD||214-689-6745 ext firstname.lastname@example.org|
|United States, Texas|
|Texas Woman's University||Recruiting|
|Dallas, Texas, United States, 75235-7299|
|Contact: Eme Hines, PhD in Physical Therapy|
|Principal Investigator: Emerenciana S Hines|
|Principal Investigator:||Emerenciana S Hines, PhD||Texas Woman's University|