Aerobic plus resistance exercise for adults with type 2 diabetes who take vitamin D

The Effect of Aerobic and Resistance Training in Patients With Type 2 Diabetes on Vitamin D Treatment: the DIAVITEX Project

NA · University Ramon Llull · NCT06081387

This trial tests whether adding regular aerobic and resistance exercise improves health measures in adults with type 2 diabetes who are already taking vitamin D.

Quick facts

PhaseNA
Study typeInterventional
Enrollment80 (estimated)
Ages40 Years and up
SexAll
SponsorUniversity Ramon Llull (other)
Locations1 site (Barcelona)
Trial IDNCT06081387 on ClinicalTrials.gov

What this trial studies

The DIAVITEX trial randomizes 80 adults with type 2 diabetes on stable metformin plus SGLT2 inhibitor therapy into four groups: combined training with vitamin D, training alone, vitamin D alone, or neither. Participants will follow a supervised sarcoplasm-stimulating online exercise program three times per week while continuing their usual medications, with clinical measures taken before and after the intervention. The study is double-blind and enrolls patients from participating primary care centers in Barcelona to clarify how exercise interacts with ongoing vitamin D treatment in this population.

Who should consider this trial

Good fit: Adults with type 2 diabetes on a stable metformin plus SGLT2 inhibitor regimen who can walk steadily for at least six minutes and either are taking or not taking prescribed vitamin D.

Not a fit: Patients using insulin or other glucose-lowering medications, taking multivitamin supplements, pregnant women, or those unable to perform mild-to-moderate exercise are unlikely to benefit from or be eligible for this protocol.

Why it matters

Potential benefit: If successful, this could improve blood sugar control, insulin sensitivity, cardiovascular fitness, and muscle strength for people with type 2 diabetes taking vitamin D.

How similar studies have performed: Exercise alone has consistently improved insulin sensitivity and fitness in type 2 diabetes and vitamin D has shown mixed results, but combining exercise with ongoing vitamin D treatment has been little studied and remains inconclusive.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults (females or males) older than 18 years old with a diagnosis of T2D in the clinic database
* Patients who have been taking the combination therapy of metformin + sodium-glucose transport protein 2 inhibitors (iSGLT2), as recommended by the redGDPS 2023, with stable medication for the past 6 months.
* Diabetic patients taking prescribed VitD treatment for at least 6 months (intervention group) and diabetic patients not taking prescribed VitD (control group)
* Patients who signed the informed consent
* Patients capable of performing mild to moderate physical activity (to walk steadily and independently for at least 6 minutes)

Exclusion Criteria:

* Patients taking other medication different than metformin + iSGLT2 (including combinations and insulin)
* Patients taking polyvitaminic supplementation at the inclusion for at least, 1 month before the intervention
* Female subjects who are pregnant
* Patients who did not sign the informed consent

Where this trial is running

Barcelona

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Diabetes Mellitus, Type 2, Vitamin D, Aerobic training, Resistance training, Insulin resistance

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.