The Effects of Strength Training on Muscle Mass and Mental Health in Adults Taking Obesity Medication

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorUniversity of Pittsburgh

About this trial

The purpose of this study is to examine the effects of resistance exercise, such as weightlifting, on retention of muscle mass and mental health in individuals taking GLP-1 RAs (an obesity medication). Resistance exercise is focused on increasing the strength of participants' muscles, such as how much participant can lift.

•The duration of this study is 3 months. This includes:

* Orientation session to explain study protocol, exercise program, and complete questionnaire about participants' medical history and lifestyle. * Two health assessments at baseline and at 3 months. These assessments include body composition, resting blood pressure, cardiovascular function, and muscular strength. Both the resistance exercise group and the control group will complete assessments at baseline and again at 3 months. After the 3-month period, individuals in the control group may choose to participate in the exercise training and complete the optional 6-month assessments. * Personalized resistance exercise sessions for 60 minutes per session, twice per week, for 3 months.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Initiating GLP-1 RAs prescribed by physician or advanced practice practitioner and willing to withhold the start of the drug until baseline assessment completed

Non-Smoker

≥18 years old

Obese: Body Mass Index 30-45 kg/m² or BMI ≥27 + ≥1 weight related comorbidity; either hypertension or sleep apnea confirmed by participant self-report

Disqualifiers

A serious heart condition, such as unstable heart disease or heart failure, irregular heartbeats that are not well controlled, severe narrowing of the heart valves, or any recent inflammation of the heart or its lining

Cancer requiring treatment in the past 5 years

Hypothyroidism/hyperthyroidism

Personal or family history of Medullary Thyroid Carcinoma (MTC) or Multiple Endocrine Neoplasia Syndrome type 2 (MEN2)

Trial design

Design model

Parallel

Treatments tested in this trial

  • Resistance Exercise

    Behavioral

    60 min/session, all for 2 sessions/week for 12 weeks

  • GLP-1 RAs

    Drug

    Participants will take GLP-1 RAs for 12 weeks

Treatment groups

40 Participants
are divided into 2 treatment groups
Group A: Resistance Exercise (RE)Experimental treatment 2 interventions
Group B: Standard CareActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

Change in Body Composition

Dual-energy X-ray absorptiometry (DEXA) will be used to assess fat mass and lean mass. Body fat will be expressed as a percentage of total body composition, and lean mass will be expressed as a percentage of total body composition. Change in each variable will be calculated as the Week 12 value minus the baseline value. Positive values indicate an increase in body fat or lean mass, and negative values indicate a decrease.

Time frame
From Baseline to Week 12
2

Change in Quality of Life

Quality of life will be assessed using the 36-Item Short Form Health Survey (SF-36). Scores range from 0 to 100, with higher scores indicating better quality of life. Change will be calculated as Week 12 minus baseline.

Time frame
From Baseline to Week 12

Secondary outcomes

1

Muscle Strength

Grip strength will be measured three times in each hand using a Jamar dynamometer, and one-repetition maximum (1RM) will be measured using leg press and chest press machines.

Time frame
From Baseline to Week 12
2

Energy Intake

Energy intake will be assessed using the Automated Self-Administered 24-hour (ASA24) dietary assessment tool.

Time frame
From Baseline to Week 12
3

Physical Activity and Sleep

Participants will be asked to wear a GENEActiv tri-axial wrist-worn accelerometer for a 7-day period to quantify physical activity and sedentary behavior. Participants will be instructed to wear the device continuously for 24 hours per day throughout the 7-day measurement period.

Time frame
From Baseline to Week 12

Other outcomes

1

Cardiovascular Fitness

Cardiovascular fitness will be assessed using a submaximal treadmill test with the Balke-Ware protocol.

Time frame
From Baseline to Week 12

Sponsors and contacts

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University of Pittsburgh

Lead sponsor

University of Pittsburgh Medical Center

Collaborator