# Role of Acetylcholine in Blood Flow Regulation in Healthy Adults: Effects of Age and Exercise Training

> **NCT03972683** · EARLY_PHASE1 · WITHDRAWN · sponsor: **Colorado State University**

## Conditions studied

- Vasoconstriction
- Vasodilation

## Interventions

- **OTHER:** Handgrip Exercise Training
- **DRUG:** Acetylcholine
- **DRUG:** Adenosine Triphosphate
- **DRUG:** Atropine
- **DRUG:** Phenylephrine
- **DRUG:** Sodium Nitroprusside

## Key facts

- **NCT ID:** NCT03972683
- **Lead sponsor:** Colorado State University
- **Sponsor class:** OTHER
- **Phase:** EARLY_PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2019-04-16
- **Primary completion:** 2021-07-31
- **Final completion:** 2021-07-31
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** no participants enrolled
- **Last updated:** 2021-08-02


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03972683

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03972683, "Role of Acetylcholine in Blood Flow Regulation in Healthy Adults: Effects of Age and Exercise Training". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT03972683. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*