Clinical Power Testing Across Human Lifetime

Completed

• Conditions: Aged
• Interventions: Other: Power Testing

• Registration Number: NCT03160963
• Lead Sponsor: University of Miami

Brief Summary

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

Detailed Description

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.

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study Start: 2017-01-25
• Study First Submitted: 2017-05-17
• Study First Submitted QC: 2017-05-18
• Study First Posted: 2017-05-19
• Primary Completion: 2019-08-15
• Study Completion: 2019-08-15
• Status Verified: 2019-09
• Last Update Submitted: 2019-09-10
• Last Update Posted: 2019-09-11

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 70

Inclusion Criteria

• between 18 and 89 years old willing to commit to two days of testing

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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

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Ages 70-79	Power Testing	Power testing 70-79 year old men and women
Ages 80+	Power Testing	Power testing men and women 80 years of age and above
Ages 30-39	Power Testing	Power testing 30-39 year old men and women
Ages 40-49	Power Testing	Power testing 40-49 year old men and women
Ages 60-69	Power Testing	Power testing 60-69 year old men and women
Ages 18-29	Power Testing	Power testing 18-29 year old men and women
Ages 50-59	Power Testing	Power testing 50-59 year old men and women

Primary Outcome Measures

Name	Time	Method
30 second stand-up test	5 minutes	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.
Countermovement jump test	5 minutes	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.

Trial Locations

Locations (1)

Max Orovitz Laboratories; 🇺🇸 Coral Gables, Florida, United States