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Effects of Two Water-based Aerobic Training Programs in Elderly Women

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ClinicalTrials.gov Identifier: NCT03289091
Recruitment Status : Recruiting
First Posted : September 20, 2017
Last Update Posted : September 25, 2017
Sponsor:
Information provided by (Responsible Party):
Stephanie Santana Pinto, Federal University of Pelotas

Brief Summary:

The aim of the study is to investigate the effects of two water based aerobic training programs on cardiorespiratory, neuromuscular and quality of life parameters in old women.

Volunteer old women age range: 60-75 years old, will participate to this study, and will randomly divided into two groups: continuous aerobic training group and interval aerobic training group.

Both group subjects will participate in two-week training sessions during 12 weeks. Independent of the group, participants will perform three water-based exercises: stationary running, frontal kick and cross-country skiing. The intensity of aerobic exercise will be based Rating Perceived Exertion (RPE). Along the training, the intensity of aerobic exercise will increase in both groups. Before and after intervention, there will be evaluation of muscle quality, muscle thickness, peak oxygen uptake and oxygen uptake at ventilatory threshold, maximal isometric and dynamic strength of knee extensors, maximal and submaximal isometric eletromiografy (EMG) activity of vastus lateralis and rectus femoris, muscle endurance, performance in functional tests and assessment of the perception of quality of life.

Data will be analyzed by Generalized Estimating Equations (GEE) and Bonferroni's post-hoc test (α=0.05), including both protocol and intention to treat analyses (α=0,05).


Condition or disease Intervention/treatment Phase
Elderly Women Behavioral: water-based continuous aerobic training Behavioral: water-based interval aerobic training Not Applicable

Detailed Description:

Aging is associated with impairment in cardiorespiratory fitness, strength performance and muscle mass decrease, which affects the functional capacity of older adults directly. Consequently carrying out routine activities can be harmed. However regular exercise practice points out as an efficient tool to mitigate factors associated with aging.

Therefore, carrying out water-based exercises has been widely suggested for older adults due to their advantages, such as low impact on lower limbs and lower cardiovascular load.

The aim of the study is to investigate the effects of two water based aerobic training programs on cardiorespiratory, neuromuscular and quality of life parameters in old women.

Volunteer old women age range: 60-75 years old, will participate to this study, and will randomly divided into two groups: continuous aerobic training group and interval aerobic training group.

Both group subjects will participate in two-week training sessions during 12 weeks. Independent of the group, participants will perform three water-based exercises: stationary running, frontal kick and cross-country skiing. The intensity of aerobic exerecise will be based Rating Perceived Exertion (RPE). Along the training, the intensity of aerobic exercise will increase.

Participants who will be randomized for the continuous aerobic training group will carry out exercises with no interval for exercise change. Intensity will be increased every mesocycle. In the first mesocycle (weeks 1-4), participants will carry out three 4-minute series of each exercise whose intensity corresponds to the Rating of Perceived Exertion (RPE) 13. In the second mesocycle (weeks 5-8), participants will perform four 3-minute series of each exercise corresponding to RPE 14. In the third mesocycle, participants will perform six 2-minute series of each exercise at intensity corresponding to RPE 15 from weeks 9-10, whereas intensity corresponding to RPE 16 will be experienced from weeks 11-12.

Participants who will be randomized for interval aerobic training group will carry out exercises which associate effort phases, at higher intensity and recovery phases, at lower intensity, with no interval for exercise change. Intensity will be increased every mesocycle. The first mesocycle (weeks 1-4) comprises three 4-minute series of each exercise whose intensity corresponds to the RPE 16 for 2 minutes and RPE 11 for 2 minutes. The second mesocycle (weeks 5-8) includes four 3-minute series of each exercise whose intensity corresponds to the RPE 17 for 1.5 minutes and RPE 11 for 2 minutes. The third mesocycle (weeks 9-12) comprises six 2-minute series of each exercise whose intensity corresponds to the RPE 18 for 1 minute and RPE 11 for 1 minute.

Before and after intervention, there will be evaluation of muscle quality, muscle thickness, peak oxygen uptake and oxygen uptake at ventilatory threshold, maximal isometric and dynamic strength of knee extensors, maximal and submaximal isometric eletromiografy (EMG) activity of vastus lateralis and rectus femoris, muscle endurance, performance in functional tests and assessment of the perception of quality of life.

Data will be analyzed by Generalized Estimating Equations (GEE) and Bonferroni's post-hoc test (α=0.05), including both protocol and intention to treat analyses (α=0,05).


Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 30 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Effects of Two Water-based Aerobic Training Programs on Cardiorespiratory and Neuromuscular Parameters in Elderly Women: a Randomized Controlled Trial
Actual Study Start Date : September 18, 2017
Estimated Primary Completion Date : May 2018
Estimated Study Completion Date : July 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Drinking Water

Arm Intervention/treatment
Experimental: water-based continuous aerobic training
Participants who will be randomized for the intervention in the continuous aerobic training group will carry out exercises with no interval for exercise change. Intensity will be increased every mesocycle. In the first mesocycle (weeks 1-4), participants will carry out three 4-minute series of each exercise whose intensity corresponds to the Rating of Perceived Exertion (RPE) 13. In the second mesocycle (weeks 5-8), participants will perform four 3-minute series of each exercise corresponding to RPE 14. In the third mesocycle, participants will perform six 2-minute series of each exercise at intensity corresponding to RPE 15 from weeks 9-10, whereas intensity corresponding to RPE 16 will be experienced from weeks 11-12.
Behavioral: water-based continuous aerobic training
Participants who will be randomized for the continuous aerobic training group will carry out exercises with no interval for exercise change. Intensity will be increased every mesocycle. In the first mesocycle (weeks 1-4), participants will carry out three 4-minute series of each exercise whose intensity corresponds to the Rating of Perceived Exertion (RPE) 13. In the second mesocycle (weeks 5-8), participants will perform four 3-minute series of each exercise corresponding to RPE 14. In the third mesocycle, participants will perform six 2-minute series of each exercise at intensity corresponding to RPE 15 from weeks 9-10, whereas intensity corresponding to RPE 16 will be experienced from weeks 11-12.

Experimental: water-based interval aerobic training
Participants who will be randomized for the intervention in the interval aerobic training group will carry out exercises which associate effort phases, at higher intensity and recovery phases, at lower intensity, with no interval for exercise change. Intensity will be increased every mesocycle. The first mesocycle (weeks 1-4) comprises three 4-minute series of each exercise whose intensity corresponds to the RPE 16 for 2 minutes and RPE 11 for 2 minutes. The second mesocycle (weeks 5-8) includes four 3-minute series of each exercise whose intensity corresponds to the RPE 17 for 1.5 minutes and RPE 11 for 2 minutes. The third mesocycle (weeks 9-12) comprises six 2-minute series of each exercise whose intensity corresponds to the RPE 18 for 1 minute and RPE 11 for 1 minute.
Behavioral: water-based interval aerobic training
Participants who will be randomized for interval aerobic training group will carry out exercises which associate effort phases, at higher intensity and recovery phases, at lower intensity, with no interval for exercise change. Intensity will be increased every mesocycle. The first mesocycle (weeks 1-4) comprises three 4-minute series of each exercise whose intensity corresponds to the RPE 16 for 2 minutes and RPE 11 for 2 minutes. The second mesocycle (weeks 5-8) includes four 3-minute series of each exercise whose intensity corresponds to the RPE 17 for 1.5 minutes and RPE 11 for 2 minutes. The third mesocycle (weeks 9-12) comprises six 2-minute series of each exercise whose intensity corresponds to the RPE 18 for 1 minute and RPE 11 for 1 minute.




Primary Outcome Measures :
  1. Cardiorespiratory Fitness evaluation change after 12 weeks [ Time Frame: Testing of VO2peak change - Baseline and 12 week ]

    We created a protocol on the treadmill to determine the peak oxygen uptake change(VO2peak), the first ventilatory threshold and the second ventilatory threshold. The protocol consists in 1-minute stages. The initial speed is 1.86 miles per hour. In each stage, the speed increases 0.3 miles per hour and every 2 stages, the treadmill inclination increases 1%. The test is interrupted when the subject indicates exhaustion. The respiratory gases will be collected through a portable gas analyzer (VO2000, MedGraphics, Ann Arbor, USA).

    The maximum value of VO2 , closed to exhaustion will be considered the VO2peak. The fist and the second ventilatory threshold will be determined by the ventilation versus intensity curve and confirmed by the O2 and Carbon dioxide ventilatory equivalents by two independent physiologists in a visual inspection.



Secondary Outcome Measures :
  1. Quality of Life change after 12 weeks (Score) [ Time Frame: Baseline and 12 week ]
    World Health Organization Quality of Life-bref - WHOQOL-bref

  2. Maximal dynamic strength change after 12 weeks (kg) [ Time Frame: Baseline and 12 week ]
    maximum repetition of knee extensors

  3. Maximal voluntary isometric contraction of knee extensors change after 12 weeks [ Time Frame: Baseline and 12 week ]
    electromyography

  4. muscle thickness of knee extensors change after 12 weeks [ Time Frame: Baseline and 12 week ]
    ultrasound image

  5. neuromuscular economy of vastus lateralis and rectus femoris change after 12 weeks [ Time Frame: Baseline and 12 week ]
    electromyography

  6. maximum muscular activity of vastus lateralis and rectus femoris change after 12 weeks [ Time Frame: Baseline and 12 week ]
    electromyography



Information from the National Library of Medicine

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Ages Eligible for Study:   60 Years to 75 Years   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

Volunteer elderly women, aged between 60-75 years old who were not participating on any regular training program in the last six months.

Exclusion Criteria:

  • Cardiovascular disease (except hypertension controlled by medication);
  • Physical impairments for exercise diagnosed through anamnesis;

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03289091


Contacts
Contact: Luana Andrade, graduated 5553999821398 andradelu94@gmail.com

Locations
Brazil
Universidade Federal de Pelotas Recruiting
Pelotas, RS, Brazil, 96055-630
Contact: Luana G Luana Andrade    5553999821398    andradelu94@gmail.com   
Sponsors and Collaborators
Federal University of Pelotas
Investigators
Principal Investigator: Cristine Alberton, Phd UFPel

Responsible Party: Stephanie Santana Pinto, Professor in Physical Education School, Federal University of Pelotas
ClinicalTrials.gov Identifier: NCT03289091     History of Changes
Other Study ID Numbers: WATER
First Posted: September 20, 2017    Key Record Dates
Last Update Posted: September 25, 2017
Last Verified: August 2017

Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Stephanie Santana Pinto, Federal University of Pelotas:
aerobic training
aquatic exercise
aging