About this trial
The overall purpose of this study is to develop a power training intervention in partnership with Veterans participating in Gerofit and to evaluate the program's acceptability, feasibility, and preliminary participant outcomes (leg power, physical function and self-report participation).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Veteran
new enrollees of the Rocky Mountain Regional Gerofit Program
ability to function independently in a group setting
Disqualifiers
inability to perform basic activities of daily living
oxygen dependency
unstable cardiac disease
moderate to severe cognitive impairment (Montreal cognitive assessment scores < 24)
Trial design
Parallel
Treatments tested in this trial
Gerofit Power Training
Other interventionGerofit Power Training will include a power training exercise prescription which will focus on having participants perform concentric portions of each resistance exercise as fast and as safely as possible with the eccentric component performed in a slow and controlled manner. The target dose of the power training intervention is 40-60% of the participant's 1-repetition maximum for 4-6 repetitions across 3-6 sets for each exercise. Exercises will focus on the major groups of the upper and lower body. All other Gerofit program components (balance, aerobic, and flexibility) will be consistent with the standard of care group. Sessions will be the same duration as the standard of care Gerofit group (60-75 minutes). The power training and standard of care groups will only differ in the form of resistance training performed.
Gerofit Standard of Care
Other interventionGerofit standard of care is a 60-75 minute multimodal exercise program which includes 20-30 minutes of aerobic training, traditional strength training of the major upper and lower body muscle groups (1-3 sets of 8-12 repetitions at moderate load), flexibility training and balance training.
Treatment groups
Trial outcomes
Primary outcomes
Adherence- proportion of Gerofit exercise sessions attended
Adherence will be measured as a proportion of the number of sessions attended out of the number prescribed per protocol.
Secondary outcomes
Retention- proportion of Veterans completing the study
Retention will be tracked as part of feasibility and to inform a future trial. Retention will be measured as the proportion of Veterans who complete all outcome measure timepoints out of the total who complete baseline measures.
Feasibility of the Gerofit exercise program
Feasibility will be measured through a validated survey: Feasibility of Intervention Measure which consists of 4 items rated on a 5-point Likert scale ranging from (1) completely disagree to (5) complete agree. Higher scores indicate greater feasibility of the program. Measure will only be collected in the intervention group.
Acceptability of the Gerofit exercise program
Acceptability will be measured through a validated survey: Theoretical Framework of Acceptability Measure which consists of 8 items rated on a 5-point Likert scale ranging from (1) did not like, high burden to (5) strongly liked, low burden. Higher scores indicate greater acceptability of the program. Measure will only be collected in the intervention group.
Leg Press Power
Leg power will be evaluated using previously validated methods in older adults at 40% and 70% of the Veterans 1-repetition maximum over 5 repetitions. Scores are continuous, higher scores indicate greater leg power (better outcome).
Sponsors and contacts
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