Correlation Between Cardiopulmonary Metabolic Cost and Lower Limb Muscle Activity

Study Overview
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Brief Summary
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The purpose of this study was to determine the effect of lower extremity muscle activity on the increase of cardiopulmonary metabolic cost during inclined treadmill gait in the elderly.

Detailed Description
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The purpose of this study was to determine the effect of lower extremity muscle activity on the increase of cardiopulmonary metabolic cost during inclined treadmill gait in the elderly. Metabolic energy expenditure and muscle activity are measured simultaneously.

Official Title
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Correlation Between Cardiopulmonary Metabolic Cost and Lower Limb Muscle Activity During Inclined Treadmill Gait in the Elderly

Conditions
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Gait

Intervention / Treatment
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* Other: Inclined treadmill gait


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Between 65 and 84 years elderly without neurological effects Ability to independent gait at least 16% inclined treadmill High levels of physical performance (SPPB > 7) Exclusion Criteria: Severe visual impairment or dizziness that increases the risk of falls Serious cardiac conditions (hospitalization for myocardial infarction or heart surgery, history of congestive heart failure, documentedserious and unstable cardiac arrhythmias, hypertrophic cardiomyopathy,severe aortic stenosis, angina or dyspnea at rest or during activities ofdaily living) Difficult to understand experimental tasks because of extremely severe cognitive impairment Recent acute injuries such as fractures within 6 months, or experience in orthopedic surgery such as artificial joint replacement Acute injuries such as fractures within 6 months or orthopedic surgery such as artificial joint replacement

Ages Eligible for Study
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Minimum Age: 65 Years
Maximum Age: 84 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: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Inclined treadmill gait<br>All subjects underwent measurements of muscle activity and respiratory metabolism energy during treadmill walking at a comfortable speed for 5 minutes and measured by three conditions (#0% inclined treadmill gait, #10% inclined treadmill gait, and #16% inclined treadmill gait) | Other: Inclined treadmill gait<br>* All subjects underwent measurements of muscle activity and respiratory metabolism energy during treadmill walking at a comfortable speed for 5 minutes and measured by three conditions (#0% inclined treadmill gait, #10% inclined treadmill gait, and #16% inclined treadmill gait)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change on metabolic energy expenditure | All subjects underwent measurements respiratory metabolism energy during treadmill walking at a comfortable speed for 5 minutes and measured by three conditions (#0% inclined treadmill gait, #10% inclined treadmill gait, and #16% inclined treadmill gait) | 1 hour | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change on muscle activity | All subjects underwent measurements of muscle activity during treadmill walking at a comfortable speed for 5 minutes and measured by three conditions (#0% inclined treadmill gait, #10% inclined treadmill gait, and #16% inclined treadmill gait) | 1 hour | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Muscle activity, Cardiopulmonary metabolic cost