Acute Effects After Stretching Respiratory Muscles on Ventilatory Pattern and Volume Distribution of Chest Wall

Not Applicable

Completed

• Conditions: Stroke
• Interventions: Other: Control Group; Other: Respiratory Muscles Stretching

• Registration Number: NCT02416349
• Lead Sponsor: Universidade Federal de Pernambuco

Brief Summary

The purpose of study is to evaluate the acute effects of respiratory muscles stretching on ventilator pattern and volume distribution of chest wall in patients with right hemiparesis post-stroke and our hypothesis is that the use of RMS will be able to improve changes in the respiratory function.

Detailed Description

All study protocol will be performing in three different days. In the first day, the participants will undergo to the initial assessment, which consisted of anamnesis and anthropometric measurements: weight, height and body mass index (BMI). Then, they will be submitting to spirometry and respiratory muscle pressure using a manovacuometer.

All patients will submit underwent two types of intervention: respiratory muscles stretching (RMS) and remain at rest (control group). The stretching will occur throughout the expiratory phase to allow respiratory muscles to reach their maximal length, and two sets with 10 consecutive incursions will use for each stretching pattern with an interval of 30 seconds between series.

For the intervention in the control group, all volunteers will be position at rest in a comfortable in a chair during 20 minutes.

Study Timeline

• Study Start: 2013-11
• Status Verified: 2014-03
• Study First Submitted: 2014-03-14
• Primary Completion: 2015-03
• Study Completion: 2015-04
• Study First Submitted QC: 2015-04-09
• Last Update Submitted: 2015-04-09
• Study First Posted: 2015-04-15
• Last Update Posted: 2015-04-15

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 10

Inclusion Criteria

• patients post-stroke with right hemiparesis no more than 3 months, from both sexes, aged above 20 years, score between 1 and 3 according to Ashworth Scale for upper limbs, score above 85 according to Barthel Index and a minimum punctuation of 18 for Mini Mental State Examination.

Exclusion Criteria

• Volunteers presenting facial paralysis; rheumatic or orthopedic diseases; spinal abnormalities or deformities that compromise the respiratory mechanics; spirometry with forced expired volume in the first second (FEV1) bellow 80% from predicted values and FEV1∕forced vital capacity (FVC) ≤ .7; presenting respiratory comorbidities; recent history of thoracic or abdominal surgery; hemodynamic instability or pregnancy.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Control Group	Control Group	All volunteers will be positioned at rest in a comfortable in a chair during 20 minutes.
Respiratory Muscles Stretching	Respiratory Muscles Stretching	Respiratory Muscles Stretching Neck stretching, upper chest stretching, pectoralis major stretching and lateral chest stretching.

Primary Outcome Measures

Name	Time	Method
Chest Wall Volume	During assessment and intervention, on average for an hour	Vcw -Total chest wall volume by Optoelectronic Plethysmography.
Compartmental chest wall volumes (composite)	During assessment and intervention, on average for an hour	Vrcp - rib cage pulmonary volume; Vrca - rib cage abdominal volume; Vab - abdominal volume by Optoelectronic Plethysmography.

Secondary Outcome Measures

Name	Time	Method
Ventilatory Pattern (Composite)	During assessment and intervention, on average for an hour	Total time (Ttot), inspiratory time (Tinsp), expiratory time (Texp), Tinsp/Ttot index, breathing rate (BR), minute volume (VE), mean inspiratory flow (MIF) and mean expiratory flow (MEF)
Lung Capacity (Composite)	During assessment and intervention, on average for an hour	VC - Vital capacity; Inspiratory Capacity by Optoelectronic Plethysmography.

Trial Locations

Locations (1)

Universidade Federal de Pernambuco - Laboratório de Fisiologia e Fisioterapia Cardiopulmonar - Recife - Brasil; 🇧🇷 Recife, Pernambuco, Brazil