Functional Mobility in the Elderly: Influence of Morphological, Neuromuscular and Training
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Aging
- Sponsor
- Federal University of Rio Grande do Sul
- Enrollment
- 11
- Locations
- 1
- Primary Endpoint
- Pennation angle of rectus femoris, vastus lateralis and biceps femoris, bilaterally.
- Status
- Completed
- Last Updated
- last year
Overview
Brief Summary
Life expectancy and elderly population are increasing. Health professionals try to provide longevity with good quality of life for this population, through the functional independence maintenance. In this context, physical exercise has an important role, specially the strength training. The ability to produce muscle strength is positively associated with the functionality and independence of older people. Different types of strength training can lead to different neuromuscular and functional gains. These types of interventions can help health professionals to determine characteristics of training for the elderly, aiming the maintenance of their functional independence. Thus, the purpose of this study is to determine the effects of a concentric strength training versus a concentric-eccentric strength training for knee flexors and extensors on structural, neuromuscular and functional parameters in older people, as well as to investigate the effect of a detraining period. Additionally, the investigators will try to identify which structural and neuromuscular parameters of lower limbs are better related to the functionality.
Investigators
Marco Aurélio Vaz, PhD
Professor
Federal University of Rio Grande do Sul
Eligibility Criteria
Inclusion Criteria
- •65 years of age or more;
- •able to walk independently;
- •not engaged in regular physical exercise.
Exclusion Criteria
- •Auditory, vestibular, visual and/or neuromusculoskeletal impairments that could influence the tests and the training;
- •severe cognitive impairment;
- •lower limb surgery;
- •osteoporosis;
- •lower limb pain.
Outcomes
Primary Outcomes
Pennation angle of rectus femoris, vastus lateralis and biceps femoris, bilaterally.
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Pennation angle at rest
Countermovement vertical jump
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Maximal vertical height in the countermovement jump
Echo intensity of rectus femoris, vastus lateralis and biceps femoris, bilaterally.
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Echo intensity determined from a gray scale analysis of the muscles at rest
Sit-to-stand
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Maximal number of repetitions during 30 seconds
Power of knee extensors and knee flexors
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Power during maximal concentric and eccentric contractions
Fascicle length of rectus femoris, vastus lateralis and biceps femoris, bilaterally.
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Fascicle length at rest
Timed-up-&-go
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Time to rise from a chair, walk 3 meters, turn, walk back and sit again
Thickness of rectus femoris, vastus lateralis and biceps femoris, bilaterally.
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Muscle thickness at rest
Unipodal static balance
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Range in anterior-posterior and medio-lateral center of pressure movement during unipodal evaluation during 30 seconds
Gait speed
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Gait speed for walking 10 meters at self-selected speed
Stair ascent and descent time
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Time to stair ascent and descent stairs
6-minutes walking test
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
The distance that the subjects can walk during 6 minutes
Rate of torque production of knee extensors and knee flexors
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Rate of torque production during maximal isometric contractions
Strength of knee extensors and knee flexors
Time Frame: First evaluation, change from first evaluation to baseline, change from baseline to 8 weeks of training, change from 8 weeks of training to 4 weeks of detraining and change from 4 weeks of detraining to 8 weeks of detraining
Maximal eccentric strength