Power Training Progression Methods
ConditionActivity, Motor
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age50-90
SponsorUniversity of Miami
About this trial
This study will investigate the impact of two unique progression models for power training in a sample of healthy older adults. The objective is to identify the most practical methodology for implementing power training, which is considered a critical marker of functional capacity in older populations.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
50 - 90 years of age.
Be able to walk 50m without any sort of assistance device.
Be able to understand and communicate in English to properly conduct the training and testing processes.
Disqualifiers
Uncontrolled cardiovascular or neuromuscular disease that prevent participation in a training program.
Any systemic inflammatory or autoimmune conditions such as rheumatoid arthritis, or other serious concomitant medical illness.
Unresolved injury or surgery to the upper or lower limbs that prevents weight training.
- Montreal Cognitive Assessment (MoCA) score below 18
Trial design
Design model
Parallel
Treatments tested in this trial
RPE-Based Power Training
BehavioralThe RPE system will be based on movement speed with an unloaded condition producing maximal speed (RPE=10) and a 1RM producing minimal speed (RPE = 1). If RPE is above 5, loads will be increased by 5% for upper body exercises and 2.5% for lower body exercises. If the RPE = between 4 and 5 the load will remain unchanged. If RPE falls below 4, loads will be lowered using the same percentages.
Power Plateau-Based Power Training
BehavioralFollowing two training sessions, the average power for each exercise will be calculated. When average power increases by a minimum of 5% from session one to session two, the load will remain unchanged to continue to reap power improvements. When the average power does not increase by at least 5% from session one to two, the load will be increased by the same protocol described above. Loads will only decrease when subjects cannot complete all repetitions with adequate form.
Treatment groups
45 Participants
are divided into 2 treatment groupsGroup A: RPE-Based Power TrainingActive comparator 1 intervention
Group B: Power Plateau-Based Power TrainingActive comparator 1 intervention
Trial outcomes
Primary outcomes
1
Change in neuromuscular performance as measured by 1-repetition maximum (1RM)
Maximal load that can be lifted in one repetition (1RM) will be assessed in both leg press and chest press exercises. The loads on the testing equipment will be increased across 5 to 7 testing repetitions. The persons 1RM will be the highest load the person can move through the range of motion of the exercise. There are no minimum or maximum scores for this test. The higher the 1RM the stronger the person is. The unit of measurement is kilograms.
Time frame
Baseline, 12 weeks2
Change in neuromuscular performance as measured by Watts
This test measures the power a person can produce at maximal speed using loads of 20%, 40%, 60%, 80%, and 90% of 1RM for the chest press and leg press. Power shows how fast a person can do work. Unit of measure is Watts.
Time frame
Baseline, 12 weeksSecondary outcomes
1
Change in the Speed of the Ten-Meter Walk Test.
The ten-meter walk test will be used to assess gait velocity. The participants will be asked to walk at usual walking speed and as quickly as possible in a straight line on a 10-m course marked at 0, 2, 8 and 10 m. On verbal command, participants will start on the 0-m mark and stop when the 10-m mark is crossed. The total time to ambulate from the 2-m mark to the 8-m mark (6 m total) will be timed to the hundredth of a second. Two trials will be performed at each speed, and the average will be documented in meters per second. One-minute recoveries will be provided between trials.
Time frame
Baseline, 12 weeks2
Change in Time for the Five Times Sit-to-Stand Test.
The five-time sit-to-stand test will be used to assess functional lower body strength. The participant will sit with arms folded across the chest and the back against the chair. On a verbal command, the participant will stand up and sit down five times as quickly as possible. Timing begins at the word go and ends when the buttocks touch the chair after the fifth repetition. One practice and two testing trials will be performed. Time will be measured in seconds.
Time frame
Baseline, 12 weeks3
Change in Distance of the Seated Medicine Ball Throw.
For the Seated Medicine Ball Throw, subjects will sit in an armless chair with the back against the chair back, while holding the 6-pound medicine ball against the chest. Subjects will then throw the ball at a perceived 45° angle as far as possible. Subjects must complete at least three practice trials; however, subjects will be allowed more trials until comfortable with the testing procedure. Upon starting the official trial, subjects will complete three separate attempts at each varying medicine ball, to nine trials in total. Each of the three trials within a given medicine ball test will be separated by a 1-minute rest. Distance will be measured in centimeters
Time frame
Baseline, 12 weeks4
Change in the time required to complete the timed Up-and-Go Test.
Upon verbal cue, the subject stands up, walks around a cone placed three meters from the front edge of the chair and then returns to a seated position as quickly as possible. Time is measured in seconds.
Time frame
Baseline, 12 weeksSponsors and contacts
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Source ClinicalTrials.gov