Strength Training for Aging
Trial Summary
What is the purpose of this trial?
The proposed studies will assess 1) the mechanisms for the age-related increase in fatigability during dynamic exercise (Aims 1 and 2) and 2) the effectiveness of high-velocity resistance training coupled with blood flow restriction (BFR) in improving muscle power output and fatigability in older adults (Aim 3). The first two aims are cross-sectional studies comparing young (18-35 years old) and older adults (≥60 yrs old) to test our central hypothesis that the greater accumulation of metabolites and increase in fatigability in older adults is due to either age-related impairments in skeletal muscle bioenergetics (Aim 1) and/or vascular dysfunction (Aim 2). These two aims will integrate techniques to assess whole-muscle bioenergetics (31P-MRS) and in vivo vascular function (near infrared spectroscopy; NIRS and doppler ultrasonography) with in vitro assessment of single fiber bioenergetics (epifluorescence microscopy) and vasoreactivity of isolated skeletal muscle arterioles (video microscopy). We will then determine whether bioenergetics, vascular function and fatigability are altered in older men and women in response to 8 weeks of resistance exercise training of the lower limb both with and without blood flow restriction (Aim 3).
Will I have to stop taking my current medications?
The trial does not specify if you must stop taking your current medications, but it excludes those who have taken medications known to influence muscle mass or neuromuscular function in the past year. Common medications for older adults, like statins, are allowed and will be considered in the study's analysis.
What data supports the effectiveness of the treatment Exercise, Physical Activity, Workout, Fitness Training for aging?
Research shows that regular exercise, including strength training, can improve muscle strength, reduce the risk of diseases like heart disease and diabetes, and enhance overall quality of life in older adults. It also helps maintain independence by improving functional capacity and reducing the risk of falls.12345
Is strength training safe for older adults?
How does strength training differ from other treatments for aging?
Strength training is unique because it directly targets muscle strength and mass, which can reverse age-related muscle loss (sarcopenia) and improve overall health in older adults. Unlike other treatments, it enhances physical function, reduces fall risk, and can be beneficial even for those with chronic conditions like hypertension and osteoarthritis.711121314
Eligibility Criteria
This trial is for men and women aged 18-40 or over 65, without severe health issues like uncontrolled high blood pressure, diabetes, recent cancer treatment, extreme obesity (BMI ≥40), or conditions limiting exercise. Pregnant women and those on certain muscle-affecting drugs can't join.Inclusion Criteria
Exclusion Criteria
Timeline
Screening
Participants are screened for eligibility to participate in the trial
Cross-sectional Study
Assessment of age-related increase in fatigability and mechanisms in young and older adults
Treatment
8 weeks of resistance exercise training with and without blood flow restriction
Follow-up
Participants are monitored for changes in muscle metabolism, oxygenation, volume, and vascular function
Treatment Details
Interventions
- Exercise
Find a Clinic Near You
Who Is Running the Clinical Trial?
Marquette University
Lead Sponsor
Medical College of Wisconsin
Collaborator
National Institute on Aging (NIA)
Collaborator