None listed
Conditions
Brief summary
The benefits obtained from respiratory muscle training can not only be used in respiratory patients (COPD, bronchiectasis, etc.), but also in the athlete population that wants to improve their cardiorespiratory fitness, that is, their performance. This is because a high metabolic workload, either due to pathology or overexertion in training, causes what is called the Respiratory Metabolic Reflex, which consists of a neural response from the sympathetic nervous system that causes vasoconstriction. reflex of the skeletal muscles and a consequent redirection of blood flow to the respiratory muscles to meet their metabolic demands, the physical sensation is that the legs are failing. There are numerous publications in the literature on the training of the respiratory muscles, together with protocols that indicate improvements in the cardiorespiratory conditions of patients with respiratory disease and in those athletes who want to improve their cardiorespiratory condition in general. Our study consists of inducing diaphragmatic fatigue in the same session in healthy subjects. In order to observe the existing relationship of diaphragmatic fatigue with muscle strength as the main objective and with the capacity for exercise through the use of different tests, Hypothesis Carrying out a protocol that involves diaphragmatic fatigue in healthy subjects could intervene in muscle strength, respiratory function, and cardiorespiratory capacity. Goals General objective Determine if there is a relationship between diaphragmatic fatigue and muscle strength in the lower limbs. Specific objectives To determine if there is a relationship between diaphragmatic fatigue and lung function. To determine if there is a relationship between diaphragmatic fatigue and the maximum inspiratory force (MIP).
Interventions
The objective of the study is to demonstrate how diaphragmatic fatigue influences sports performance acutely.
The sample will be divided into two groups. "The fatigue group" and the "active group"
All participants will familiarize themselves with the use of the inspiratory muscle training devices before the test to avoid problems and loss of time.
All participants will be evaluated for their respiratory capacity with the values of the forced expiratory volume in the first second (FEV1) and the
The objective of the study is to demonstrate how diaphragmatic fatigue influences sports performance acutely. The sample will be divided into two groups. "The fatigue group" and the "active group" All participants will familiarize themselves with the use of the inspiratory muscle training devices before the test to avoid problems and loss of time. All participants will be evaluated for their respiratory capacity with the values of the forced expiratory volume in the first second (FEV1) and the ratio between FEV1 and forced vital capacity using the Air Smart Spirometer (Pond healthcare innovation,Sweeden) Afterwards they will perform a conventional warm-up for 10 minutes( 5 minutes on a monark bike,lower limb mobility exercises, skipping rope jumps for one minute and low load squat exercises) afterwards they will perform a half squat at maximum speed measured with the vitruve encoder. They will make 3 attempts with a 3-minute break between attempts and the best will be recorded. Then they will perform a counter movement jump and it will be measured with the myjump2 app. Here they will also make 3 attempts with 3 minutes rest between attempts and the best jump will be recorded. The tests and the warm up were performed by to expert physical therapist with more than 10 years of experience. Once they have finished the tests, each participant will go to the assigned group to carry out the intervention. Fatigue group: will train the diaphragm overcoming resistance through a training device for the inspiratory muscles.The device (Big breathe GH innotek Co,Ltd Busan,Republic of Korea) will apply a resistance when the subject wants to inhale so the diaphragm will need to perform a stronger contraction. They will have to perform as many repetitions as possible until they are unable to overcome said resistance (50% of the maximum inspiratory pressure). It will be around 60 repetitions which will take 3 minutes to arrive to fatigue. The maximum inspiratory pressure will be measured with the microRPM device which is used in most of the investigation. This exercise will be done just one time, because we want to see the immediate effects of the diaphragm once it is fatigue in the muscles of the lower limbs. Once the diaphragm is fatigued (the participant is not able to break the resistance of the training device) the initial test will be done again. The respiratory capacity tests, the half squat test and the counter movement jump test At this point the intervention will be finished. The total intervention time will be around 30 minutes per participant
Sponsors
Universidad Europea de Madrid
Study design
Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Prevention
Masking
Blinded (masking used) (Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
Male
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
-Be 18 years old or older and younger than 46 years old -Non smoking person (at least 1 year) -Practice any physical activity at least 3 times a week for minimum one year
Exclusion criteria
-Suffered an injury than doesn't allow the participant to perform physical activity -Cognitive deterioration problems -Cardiovascular and respiratory pathologies -Hypertension -Surgery intervention in lower limbs the last 12 months -Active episodes of lower limb pain
Outcome results
None listed