About this trial
Respiratory muscle training represents an effective method increasingly utilized in both sports and healthcare domains, employing various devices, among which threshold devices are prominent. The aim of this study is to determine the relationship between inspiratory muscle fatigue or warm-up and muscular strength in upper and lower limbs, in sedentary older adults, as well as the association between such fatigue and other variables, including maximal inspiratory pressure, diaphragmatic ultrasonography, functionality and handgrip strength.
According to our hypothesis, the execution of a protocol inducing inspiratory muscle fatigue or activation in sedentary older adults could influence muscular strength, respiratory function and exercise capacity.
In this study, subjects will be divided into three groups: the fatigue group , the activation group and the control group.
Measurements of variables, such as maximal inspiratory pressure, diaphragmatic strength (ultrasound image) and functional capacity, will be conducted.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Being over 60 years old.
Physical independence in terms of gait and transfers
Engaging in less than 150 minutes of physical activity per week.
Disqualifiers
Having any pathology that prevents the performance of physical activity.
Subjects with impaired cognitive abilities.
Subjects with tympanic perforation or middle-inner ear pathology.
Subjects with chronic respiratory, cardiac, renal, or metabolic pathology..
Trial design
Parallel
Treatments tested in this trial
inspiratory muscle training
DeviceThe subjects will perform deep inspirations against a threshold device with varying resistances to observe the effect on the diaphragm and the musculature of the upper limbs.
inspiratory muscle training
DeviceThe subjects will perform deep inspirations against a threshold device with varying resistances to observe the effect on the diaphragm and the musculature of the upper limbs.
Treatment groups
Trial outcomes
Primary outcomes
Respiratory muscle strength
It will be assessed using a MicroRPM® (MicroMedical, UK). Maximum Inspiratory Pressure (MIP): The person will be instructed to take a maximal deep breath in, and then exhale to residual volume. After that, they will be asked to inhale forcefully against the resistance provided by the MicroRPM®. This measures the strength of the inspiratory muscles. The measures will be expressed in cmH2O.
Diaphragmatic thickness and thickening fraction
Diaphragmatic thickness and thickening fraction The linear array probe with a frequency of 3.0-10 megahertz (MHz) is placed perpendicularly to chest wall close to the mid-axillary line which is between the 8th and 10th intercostal space. The thickness of diaphragm is measured at the end of expiration and maximum inspiration for three times and the average values were recorded. The measures will be expressed in centimeters.
Diaphragm movement curve
The convex array probe with a frequency of 1.5-4.6 MHz is placed below the midclavicular line of the right costal margin in longitudinal scanning plane. The liver was used as an inspection window, and the probe was pointed toward the cephalic side. The ultrasound bundle is perpendicular to the posterior third of the right diaphragm. M-mode ultrasound is used to record the diaphragmatic movement curve during quiet breathing (QB) and deep breathing (DB). The measures will be expressed in milliseconds.
Secondary outcomes
6 minutes walking test
The 6-Minute Walk Test (6MWT) is a functional cardiorespiratory assessment that measures the maximum distance a subject can walk in six minutes. The patient will be instructed to walk at the fastest possible pace along a 30-meter corridor. The therapist will accompany the patient throughout the test, and the use of assistive devices and/or external oxygen supplementation will be permitted if necessary. The measures will be expressed in meters.
Handgrip strength
The recommendations of the American Society of Hand Therapists will be followed: the subject will be positioned with the shoulder in adduction and neutral rotation, the elbow flexed at 90°, the forearm in a neutral position, and the wrist positioned between 0° and 30° of extension. Three maximum grip strength measurements will be performed on the dominant hand, with one-minute rest intervals between trials, selecting the highest value. Handgrip strength dynamometry will be conducted using a JAMAR dynamometer (Lafayette Instrument, Lafayette, IN, USA). The measures will be expressed in kilograms
Locations
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
This trial is not recruiting at the moment. You can still explore other options: