Isokinetic Testing Protocol in Elderly and Young Men

NCT ID: NCT00673998

Last Updated: 2008-05-07

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

38 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-02-28

Study Completion Date

2006-11-30

Brief Summary

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An age-related decrease in muscular strength may have a detrimental effect on muscle fatigue and recovery. To date, only one study has determined the effect of varied rest intervals (RI) between exercise sets in active younger and older women. They reported that active younger and older women require similar RI between sets to recovery full isokinetic knee extension peak torque (PT). However, we are unaware of any published studies comparing RI PT recovery between younger and older men. Thus, the purpose of this study was to compare the effect of two different RI's between sets of isokinetic knee extension exercise on PT, and Total Work (TW) between untrained younger and older men.

Detailed Description

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18 young men (24.22 ± 2.58 yrs) and 20 older men (66.85 ± 4.02 yrs) performed 3 sets of 10 unilateral isokinetic knee extension repetitions at 60°/s. The rest intervals between sets were 1 and 2 minutes and were counterbalanced across 2 testing days, separated by a minimum of 48 hours. The work-to-rest ratio was 1:3 and 1:6. All subjects were not involved in exercise programs that included resistance exercises within the last 6 months. Statistical evaluation of the data was performed using a 2x 2 x 3 mixed factor repeated measures ANOVA \[age (younger and older) x rest interval (1 and 2 min) x set (1st, 2nd, and 3rd)\]. Statistical significance was set at p \< 0.05 for all comparisons.

Conditions

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Healthy

Keywords

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Isokinetic Fatigue Strength Older

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Interventions

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Isokinetic Dynamometer (Biodex system III)

Biodex system III Isokinetic Dynamometer (Biodex Medical, Inc., Shirley, NY).

Intervention Type DEVICE

Other Intervention Names

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Biodex Isokinetic Dynamometer Cybex Isokinetic Dynamometer

Eligibility Criteria

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Inclusion Criteria

* Less than 75 years
* Independent

Exclusion Criteria

* History of cardiovascular disease
* Hypertension
* Orthopedic disease
Minimum Eligible Age

20 Years

Maximum Eligible Age

75 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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University of Brasilia

OTHER

Sponsor Role lead

Responsible Party

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University of Brasilia

Principal Investigators

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Martim Bottaro, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Brasilia

Locations

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University of Brasilia

Brasília, Federal District, Brazil

Site Status

Countries

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Brazil

Other Identifiers

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UCB-072/2004

Identifier Type: -

Identifier Source: org_study_id