Strength Training for Elderlies and Their Effects on Muscle Fatigue and Microcirculation - Randomized Clinical Trial

Study Overview
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Brief Summary
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The purpose of this study is to verify the effects of a strength training program on functional capacity, muscle performance and microcirculation in the elderly.

Detailed Description
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Purpose The primary research question is: Do muscular strength training programs can improve functional capacity, muscle performance and microcirculation in the elderly? Hypothesis: Strength training program will promote electromyographic changes during the development of peripheral muscle fatigue and microcirculatory blood flow contributing to functional autonomy. Secondary Research Questions Does the strength training program in the elderly improve the standard of electromyographic fatigue? Hypothesis: Elderly practitioners of strength exercise program showed increased neuromuscular efficiency and electromyographic fatigue index. Do the strength training program in the elderly improve peripheral microcirculation? Hypothesis: A regular program of strength exercise in the elderly increases the blood flow in peripheral microcirculation changing the process of muscle fatigue. These biomechanical and physiological changes contribute to increased functional autonomy and reducing the risk of falls in the elderly.

Official Title
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Strength Training for Elderlies and Their Effects on Muscle Fatigue and Microcirculation - Randomized Clinical Trial

Conditions
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Aging

Intervention / Treatment
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* Other: Strength training program


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: sedentary elderly individuals who have physical and medical conditions to perform strength training individuals who participate in the Open University Maturity Program Exclusion Criteria: individuals who do not have physical and medical conditions to perform strength training

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: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Group A<br>group of elderly participants of strength training program | Other: Strength training program<br>* Strength Training program applied twice a week for sixteen weeks. Each training exercises has a total time of 50 minutes. Warm-up: 5 minutes of stretching. Training: Leg press; Leg Curl; Vertical traction; Chest press; Abdominal crunch; Lower back. Gametherapy. Relaxation: 5 minutes of stretching.<br>|
| No Intervention: Group B<br>group of seniors who did not practice strength training program | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in elderlies's microcirculatory blood flow after 4 months | The blood flow in the microcirculation in the elderly will be measured by laser-doppler flowmetry. The measures blood flow in the microcirculation will be quantified by the reactive hyperemia Post-occlusion protocol (PORH). | 4 months | 
| Change in elderlies's muscle fatigue after 4 months | muscle fatigue will be quantified by surface electromyography of the muscles of the lower limbs. The electromyographic fatigue threshold and fatigue index will be calculated by the Root Mean Square (RMS) and Median Frequency variables after 4 months. | 4 months | 
| Change in elderlies's functional capacity after 4 months | The functional capacity of the elderly will be evaluated by the Berg Balance Scale, the Timed up-and-go Test, and Falls Efficacy Scale International (FES-I) after 4 months | 4 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in elderlies's strength after 4 months | The lower body strength of the elderly will be measured by 30-s chair test stand after 4 months. | 4 months | 
| Change in elderlies's functional autonomy after 4 months | The functional autonomy of the elderly will be determined by the general functionality index of the Latin American Development Group to Maturity Protocol after 4 months. | 4 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Microcirculation, Electromyography, Motor Activity