Clinical Power Testing Across Human Lifetime

Optimal Manner of Measuring Power Across the Lifespan

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

Study Overview

• Status: Completed
• Conditions: Aged
• Intervention / Treatment: Other: Power Testing

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.

• Study Type: Observational
• Enrollment (Actual): 70

Contacts and Locations

Study Locations

• United States
  • Florida
    • Coral Gables, Florida, United States, 33146
      • Max Orovitz Laboratories

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 100 years (Adult, Older Adult)
• Accepts Healthy Volunteers: N/A
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Men and women 18-100

Description

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

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Cross-Sectional

Number of groups / cohorts

7

Cohorts and Interventions

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

What is the study measuring?

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

Collaborators and Investigators

• Sponsor: University of Miami

Study record dates

Study Major Dates

• Study Start (Actual): January 25, 2017
• Primary Completion (Actual): August 15, 2019
• Study Completion (Actual): August 15, 2019

Study Registration Dates

• First Submitted: May 17, 2017
• First Submitted That Met QC Criteria: May 18, 2017
• First Posted (Actual): May 19, 2017

Study Record Updates

• Last Update Posted (Actual): September 11, 2019
• Last Update Submitted That Met QC Criteria: September 10, 2019
• Last Verified: September 1, 2019

More Information

Terms related to this study

• Keywords: elderly
• Other Study ID Numbers: 20161192

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No