Clinical Power Testing Across Human Lifetime

Study Overview
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Brief Summary
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We will determine when to transition from the common vertical jump to chair stand depending on age and physical activity levels.

Detailed Description
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Assessing individuals' power, while it is useful in measuring fitness and performance levels, often requires expensive materials. Vertical jump height has been used to assess peak power output using specific regression equations. The issue with this test, although it is often used with older persons, is that it is not practical or useful in assessing the power output in elderly adults due to possible injury risk and lack of familiarity with providing a maximal jump performance. Power is important for elderly adults; because, higher power output in elderly adults has been shown to highly correlate with overall functionality, the ability to do activities of daily living (ADL), and a reduction in fall probability. A recent study examined the capacity of a regression equation to quantify power in elderly adults using a sit-to-stand test and determined; however, the sit-to-stand lacks the difficulty and exhibits a ceiling effect in younger individuals. Therefore, this study will attempt to determine when to transition from the vertical jump to the sit-to-stand, so that the differences in chronological versus physiological age may be determined during aging, and conversely, during improvements through physical or other interventions.

Official Title
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Optimal Manner of Measuring Power Across the Lifespan

Conditions
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Aged

Intervention / Treatment
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* Other: Power Testing


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: between 18 and 89 years old willing to commit to two days of testing Exclusion Criteria: severe musculoskeletal impairment, neurological impairment that would affect balance, severe cognitive impairment (Mini-mental 19 or below), unstable chronic disease state, severe vestibular problems severe orthostatic hypotension, Simultaneous use of cardiovascular, psychotropic and antidepressant drugs. Adults unable to consent Prisoners Pregnant females

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Ages 18-29<br>Power testing 18-29 year old men and women | Other: Power Testing<br>* Chair stand, vertical jump, computerized squat<br>|
| Ages 30-39<br>Power testing 30-39 year old men and women | Other: Power Testing<br>* Chair stand, vertical jump, computerized squat<br>|
| Ages 40-49<br>Power testing 40-49 year old men and women | Other: Power Testing<br>* Chair stand, vertical jump, computerized squat<br>|
| Ages 50-59<br>Power testing 50-59 year old men and women | Other: Power Testing<br>* Chair stand, vertical jump, computerized squat<br>|
| Ages 60-69<br>Power testing 60-69 year old men and women | Other: Power Testing<br>* Chair stand, vertical jump, computerized squat<br>|
| Ages 70-79<br>Power testing 70-79 year old men and women | Other: Power Testing<br>* Chair stand, vertical jump, computerized squat<br>|
| Ages 80+<br>Power testing men and women 80 years of age and above | Other: Power Testing<br>* Chair stand, vertical jump, computerized squat<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 30 second stand-up test | The subject will alternate standing a sitting as many times as possible in the 30 second time frame. Wattage (power) will be computed using the equation by Smith et al., Clin Interventions on Aging, 2010. | 5 minutes | 
| Countermovement jump test | The subject will begin in a standing position, quickly lower the body to a self-determined angle an reach as high as possible. Jump height will be determined by subtracting the height of the jump from standing reach. The power is computed using the Lewis formula. | 5 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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elderly