RecruitingNot ApplicableNCT07370727

Velocity-Based Resistance Training in Kidney Transplant Recipients

Effects of Velocity-Based Resistance Training on Renal Function and Metabolic Health in Kidney Transplant Recipients: Protocol for a Randomized Controlled Trial

Sponsor

Fundación Universitaria del Area Andina

Enrollment

12 participants

Start Date

Oct 29, 2025

Study Type

INTERVENTIONAL

Conditions

Metabolic Syndrome Cardiovascular Risk Factors Kidney Transplant Recipients

Summary

This randomized controlled trial aims to evaluate the effects of velocity-based resistance training on renal function and metabolic health in kidney transplant recipients. Participants will be randomized into two groups performing resistance training at different execution velocities (maximal intended vs. submaximal controlled). The intervention will last 12 weeks and include multi-joint exercises (squat, bench press, military press). Primary outcomes include renal function (serum creatinine, eGFR, blood urea nitrogen, uric acid) and metabolic markers (HDL, triglycerides, glucose, waist circumference, blood pressure). Secondary outcomes include muscle strength, force-velocity profile, anthropometry, physical activity, fitness perception, and adherence to immunosuppressive medication.

Eligibility

Min Age: 18 YearsMax Age: 50 Years

Inclusion Criteria5

Men and women aged 18 to 50 years.
Kidney transplant performed ≥12 months before enrollment.
Stable graft function in the previous 6 months (serum creatinine \< 1.5 mg/dL, no rejection episodes).
Written medical clearance from a nephrologist to perform moderate-to-vigorous physical activity.
Signed informed consent.

Exclusion Criteria6

Active autoimmune disorders.
Recent coronary disease (≤6 months).
Severe musculoskeletal limitations incompatible with resistance training.
Diagnosis of diabetes mellitus (pre- or post-transplant).
Current active infection.
Use of immunosuppressive drugs with contraindications for exercise (e.g., mTOR inhibitors at baseline).

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Interventions

OTHERVelocity-Based Resistance Training - Submaximal Velocity Protocol

A 12-week supervised resistance training program performed 3 sessions per week. Exercises will include bench press, squat, and shoulder press in Smith machine. Participants will execute each repetition at \~50% of maximal concentric velocity, with sets completed according to predetermined repetitions (20-30 depending on load, 20-60% 1RM).

OTHERVelocity-Based Resistance Training - Maximal Velocity Protocol

A 12-week supervised resistance training program performed 3 sessions per week. Exercises will include bench press, squat, and shoulder press in Smith machine. Participants will execute each repetition at maximal concentric velocity, with sets terminated at 20% velocity loss. Training loads will increase progressively (20-60% 1RM).