Healthy
Conditions
Brief summary
Fatigue of the respiratory muscles is one of the limitations of exercise at high intensity, although the mechanisms that explain it are not yet clear. This fatigue would cause a decrease in physical performance and could limit the functional capacity of the subject. In this sense, it has been shown that specific training of respiratory muscles, especially inspiratory muscles, improves their strength and resistance both in healthy people and in people with pathologies; managing to improve the quality of life and both physical and sports performance. This study, which follows the quantitative method and proposes an analytical, experimental, longitudinal and prospective design (with the aim of conducting a randomized clinical trial), proposes an intervention based on performing a specific training of inspiratory muscles for 8 weeks, taking 30 maximum inspirations at 60% of the PIM (maximum inspiratory pressure), 2 times a day for 5 days a week; with the aim of assessing the effects on inspiratory function, cardiorespiratory fitness when performing a stress test (Harvard step test) and diaphragm thickness measured by ultrasound. 40 healthy subjects between 18 and 25 years old will be recruited and divided into two groups: an experimental group (n = 20) and a control group (n = 20).
Interventions
Inspiratory muscle training during 8 weeks, 30 inspirations at 60% of the PIM (maximum inspiratory pressure), 2 times a day for 5 days per week.
Sponsors
Universidad Francisco de Vitoria
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
* healthy university students
Exclusion criteria
* Suffering or having suffered aortic aneurysm; pneumothorax; rib wall or pulmonary fistulas; recent trauma or surgery to the upper airway or thoracoabdominal; recent myocardial infarction or angina; retinal detachment, glaucoma, or recent eye surgery; increased intracranial pressure (tonsillar wedge, meningocele, hydrocephalus); abdominal hernias and acute middle ear problems.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Diaphragm muscle thickness | Change from baseline diaphragm muscle thickness at 8 weeks | Diaphragm muscle thickness will be measured in mm by an ultrasound device |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Inspiratory muscle strength | Change from baseline inspiratory muscle strength at 8 weeks | Inspiratory muscle strength will be measured in % by a POWER-breathe device |
| Physical Efficiency Index | Change from baseline physical efficiency index at 8 weeks | Physical efficiency Index will be obtained by the Harvard Test |
Countries
Spain
Outcome results
None listed