Visual Feedback Non-weight Bearing Exercise on the Elderly With Knee Osteoarthritis.

Study Overview
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Brief Summary
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Degenerative knee arthritis is the most common chronic arthritis disease. Once the elderly suffer from this disease, it will accelerate the loss of body function and autonomy. strength performances and maintain are the most important functional performances of lower extremities, especially in walking and balance in daily activities for elderly people with osteoarthritis(OA) of the knee. However, combining the exercise and visual feedback may promote the muscle strength and functional performances of lower limbs, facilitating the muscle strength, motor and boady functional performances for elderly adults after OA knee. Therefore, the purpose of this proposal is to investigate the changes in muscle strength and physical fitness of lower limbs in older adults following OA knee after visual feedback non-weight bearing exercise intervention.

Detailed Description
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Backgroud:In clinical observation, aging leads to a gradual degeneration of the neuromuscular system, decreasing the muscle strength and functional performances of lower extremities. Muscle strength performances and maintain are the most important functional performances of lower extremities, especially in walking and balance in daily activities for elderly people with osteoarthritis(OA) of the knee. However, non-weight bearing exercise combing visual feedback may promote functional performances of lower limbs, facilitating the muscle strength for elderly people with OA knee. Purpose: Therefore, the purpose of this proposal is to promote muscle strength and physical fitness after visual feedback non-weight bearing exercise intervention. Method:After recruiting 40 elderly people with degenerative knee arthritis, they were randomly assigned to the experimental group and the control group .The experimental group conducted visual feedback under the guidance of Labview software, and used rowing machine equipment for resistance exercise training.The training time of the two groups is 12 weeks, twice a week, 30 minutes each time, a total of 24 times.Before and after exercise training , both groups used the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) to understand their self-response of knee(pain、stiffness functional)；used MicroFets3 to measure hip and knee muscle strength；Elder Functional Fitness chose Chair stand test、Functional reach test、10m-Walking time are used to understand the body function. Stastistical analysis:Data were analyzed with SPSS18.0. Paired Sample t-test and Independent-Sample T Test were used to determine the between-groupand within-group differences on all outcome measures. The statistical significance level was set at a (p<0.05).

Official Title
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Investigating the Impacts of Visual Feedback Non-weight Bearing Exercise on Muscle Strength and Physical Fitness of Lower Limbs in Elderly People With Knee Osteoarthritis in the Community.

Conditions
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Osteoarthritis

Intervention / Treatment
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* Behavioral: visual feedback with non-weight bearing exercise
* Behavioral: elastic band exercise


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Clinical diagnosis of degenerative knee arthritis. Must be able to stand up and sit down. Exclusion Criteria: surgery on the knee or hip joint. rheumatoid arthritis and uarthritis in past six years. lower limb fractures neurological diseases,e.g.,stroke、parkinson's disease injected hyaluronic acid into the knee joint in the past two months severe cardiovascular and heart failure.

Ages Eligible for Study
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Minimum Age: 65 Years
Maximum Age: 85 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experiment group<br>non-weight bearing visual feedback intervention under the of Labview software, and used rowing machine equipment for exercise training for 30 minutes,then eselastic band exercise training for 30 minutes. | Behavioral: visual feedback with non-weight bearing exercise<br>* the training time is 12 weeks, twice a week, 60 minutes each time, a total of 24 times.<br>|
| Active Comparator: elastic band exercise<br>elastic band exercise under the Physiotherapist, and used elastic band for exercise training for 60 minutes,include muscles flexion the hip joint, muscles extention the hip joint,etc. | Behavioral: elastic band exercise<br>* the training time is 12 weeks, twice a week, 60 minutes each time, a total of 24 times.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) | The scale is mainly to trace the patient's subjective perception of the knee joint within 48 hours. There are 24 questions, divided into three aspects: pain (5 questions, 0-20 points), stiffness (2 questions, 0-8 points) , Functional activities (17 questions, 0-68 points), each item is divided into five levels: none, minor, moderate, severe, and very severe. The total of the three parts is 0-96 points. | 5 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| MicroFets3 to measure hip and knee muscle strength | we Include Hip Abductor 、Hip adductors、Hip extensors、Hip flexors、knee extensors、knee flexors etc.Before the test, the subject practiced once and then performed a formal test. The strength of each muscle contraction was recorded in kilograms. During the formal test, the subject was required to resist MicroFET3 with maximum strength, and the tester gave the order (Strong! Push hard! Push hard!), the data uses the average of three times, and each muscle rests for one minutes. | 20 minutes |