Isokinetic Testing Protocol in Elderly and Young Men

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.

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Key information

Conditions

Healthy Fatigue Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

20 year–75 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

University of Brasilia

Brasília, Federal District, 70919-970, Brazil

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Less than 75 years
Independent

Exclusion criteria

History of cardiovascular disease
Hypertension
Orthopedic disease

Treatment and study plan

Isokinetic Dynamometer (Biodex system III)

Device

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

Other names: Biodex Isokinetic Dynamometer, Cybex Isokinetic Dynamometer

Primary outcomes

Peak Torque

Time frame: 1 week

Sponsors and collaborators

Lead sponsor

University of Brasilia

Other

Registry information

Official study title

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

Important dates

Study start: 2005
Primary completion: 2006
Study completion: 2006
First posted: May 7, 2008
Registry last updated: May 7, 2008

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed