Isokinetic Testing Protocol in Elderly and Young Men

Healthy Clinical Trial

Official title:

The Effects of Rest Interval on Quadriceps Torque During an Isokinetic Testing Protocol in Elderly and Young Men

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00673998
• Other study ID #: UCB-072/2004
• Status: Completed
• Phase: N/A
• First received: April 30, 2008
• Last updated: May 6, 2008
• Start date: February 2005
• Est. completion date: November 2006

Study information

• Verified date: May 2008
• Source: University of Brasilia
• Contact: n/a
• Is FDA regulated: No
• Health authority: Brazil: Ministry of Health
• Study type: Interventional

Clinical Trial Summary

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.

Description:

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 38
• Est. completion date: November 2006
• Est. primary completion date: March 2006
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 20 Years to 75 Years

Eligibility

Inclusion Criteria:

• Less than 75 years

• Independent

Exclusion Criteria:

• History of cardiovascular disease

• Hypertension

• Orthopedic disease

Study Design

Allocation: Randomized, Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic

Related Conditions & MeSH terms

• Healthy

Intervention

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

Locations

Country	Name	City	State
Brazil	University of Brasilia	Brasilia	DF

Sponsors (1)

Lead Sponsor	Collaborator
University of Brasilia

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Peak Torque		1 week	Yes