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Completed

NCT Number: NCT03206580

Functional Mobility in the Elderly: Influence of Morphological, Neuromuscular and Training Parameters

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.

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Key information

Conditions

Aging

Age range

65 year–85 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul

Porto Alegre, Rio Grande do Sul, 90690-200, Brazil

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Male;
  • 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.

Treatment and study plan

Concentric training

Other

Subjects will be submitted to 8 weeks (16 sessions) of a concentric training for knee flexors and knee extensors. This training will be performed in an isokinetic dynamometer at 70% of the subject's maximal voluntary isometric contraction.

Concentric-Eccentric training

Other

Subjects will be submitted to 8 weeks (16 sessions) of a concentric-eccentric training for knee flexors and knee extensors. This training will be performed in an isokinetic dynamometer at 70% of the subject's maximal voluntary isometric contraction.

Primary outcomes

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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 isometric strength

  15. 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 concentric strength

  16. 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

Sponsors and collaborators

Lead sponsor

Federal University of Rio Grande do Sul

Other

Registry information

Official study title

Functional Mobility in the Elderly: Influence of Morphological, Neuromuscular and Training

Important dates

Study start
2016
Primary completion
2018
Study completion
2018
First posted
Jul 2, 2017
Registry last updated
Jun 10, 2024

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.

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