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Vascular Function Improvements After Chronic Passive Stretching

NCT04271241 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 39

Last updated 2020-02-17

No results posted yet for this study

Summary

Acutely, during different bouts of passive stretching (PS), blood flow (Q ̇) and shear rate ( ) in the feeding artery of the stretched muscles increases during the first two elongations and then it reduces during the following bouts. This hyperemic response during the first two elongations is mediated by the local release of vasoactive molecules (e.g. nitric oxide, NO). This phenomenon disappears during the following elongations due to the NO and other vasoactive molecule depletion. The relaxation phase between stretching bouts, instead, is always characterized by hyperemia as results of stretch-induced peripheral resistances decrease. Whether chronic PS administration may influence vascular function is still a matter of investigation. The hypothesis is that repetitive PS-induced Q ̇ and changes may be an enough stimulus to provoke increments in NO bioavailability, thus improving vasomotor response.

Conditions

  • Vasodilation
  • Vasoconstriction
  • Stretch
  • Sympathetic; Imbalance

Interventions

OTHER

Passive stretching (PS) training

PSBil and PSMono underwent 12 weeks of PS training, 3 sessions per week (36 sessions in total). In PSBil, each session lasted 40 min and included two maneuvers for both the knee extensor and plantar flexor muscles with the following protocol: 45 s elongation and 15 s recovery in the resting position, all the cycle repeated for five times 7. In PSMono, exercises were performed only on the right limb and each session had a duration of 20 min. Ctrl did not underwent any PS exercise throughout the study. To promote participants' compliance, daily classes were held at different day time (morning and afternoon) at the University Sports Centre gym. Each class was supervised by an expert operator, which monitored the attendance, the correct exercise execution and the intensity exerted during the exercise (80% of the point of discomfort). The participants not attending at least the 80% of classes were excluded from the study, and a new participant was recruited to substitute the drop out.

Sponsors & Collaborators

  • University of Milan

    lead OTHER

Principal Investigators

  • Emiliano Cè, PhD · University of Milan

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-01-07
Primary Completion
2020-01-07
Completion
2020-02-07

Countries

  • Italy

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04271241 on ClinicalTrials.gov