Inspiratory Muscle Training (EMI) on Inspiratory Muscle Strength, Pulmonary Capacity and Performance in Soccer Players

The training of the respiratory muscles seems to be fundamental in people who require a high physical demand. There is abundant scientific evidence that relates the respiratory variables and the limitation to exercise. The published studies are athletics and cycling, however it is scarce in football. Objective. To assess the effects of inspiratory muscle training on lung function and sports performance in soccer players.

Study Overview

• Status: Completed
• Conditions: Breathing Exercises: Inspiratory Muscle Training
• Intervention / Treatment: Device: Inspiratory muscle training

Detailed Description

Objective. To assess the effects of inspiratory muscle training (IMT) on lung function, inspiratory muscle strength and athletic performance in soccer players.

Method. Participants will be randomized into two groups: experimental and sham . The two groups will perform a protocol of 8 weeks of training (6 days / week) with the PowerBreathe device. The EG will use progressive resistance loads up to 80% of the MIP, while the SG will use the device with a minimum load (20% PImax) during the 8 weeks. All participants will have the following tests before and after the intervention and 3 months after the end of the program: spirometry (FVC, FEV1), PImax, biophotogrammetry, and fit 30/15 test. For the statistical analysis, a 2-factor variance analysis will be performed for repeated measures and Pearson's correlations. The statistical significance will be set with a value of p <0.05. The effect size will be calculated using the partial eta-square.

• Study Type: Interventional
• Enrollment (Actual): 22
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Spain
  • Murcia, Spain, 30107
    • Catholic University San Antonio of Murcia
  • Murcia, Spain, 30835
    • Mayayo Sports Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 22 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

• Soccer players

Exclusion Criteria:

• Soccer players with disabilities

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: G-IMT; The experimental group will first carry out a diaphragmatic reeducation program, followed a posteriori by an inspiratory muscle training program use progressive resistance loads up to 80% of the PImax during the 8 weeks	Device: Inspiratory muscle training; The inspiratory muscle training program will be of the "strength and endurance" type, using the POWERbreathe® device and composed of: daily sessions (3 sets of 15 repetitions -inspiration), 6 days a week for 8 weeks. Participants will begin training breathing with a resistance of 20% of their PImax during the first week. After the first week, the resistance will increase between 5% and 10% in each session until reaching 80% of the PImax, which will be maintained during the first month. Upon completion, the PImax value will be re-evaluated and the player will train 80% of this new value during the second month. At the end of the second month, the PImax is evaluated and the player will train the third month with a resistance of 80% of this new value.; Other Names: G-IMT
Placebo Comparator: Gn-IMT; The Gn-IMT will use by an inspiratory muscle training program use resistance loads up to 20% PImax during the 8 weeks.	Device: Inspiratory muscle training; The inspiratory muscle training program will be of the "strength and endurance" type, using the POWERbreathe® device and composed of: daily sessions (3 sets of 15 repetitions -inspiration), 6 days a week for 8 weeks. Participants will begin training breathing with a resistance of 20% of their PImax during the first week. After the first week, the resistance will increase between 5% and 10% in each session until reaching 80% of the PImax, which will be maintained during the first month. Upon completion, the PImax value will be re-evaluated and the player will train 80% of this new value during the second month. At the end of the second month, the PImax is evaluated and the player will train the third month with a resistance of 80% of this new value.; Other Names: G-IMT

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
RESPIRATORY CAPACITY	The variable PImax. will be measured through spirometry whose value will be expressed in cm / H2O	1 week

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Biofotogrametry	Biofotogrametry is a tool used to measure the thoracic expansion, the respiratory pattern and its cadence; by recording a video of the breathing pattern that observes the pre- and post-breathing of the subjects. The unit of measurement in which the results are expressed for the variable thoracic extension will be in cm, and for the respiratory pattern and its percentage cadence (%).	1 week
Sports performance	The performance variable will be evaluated using the "fit" 30/15 test, a tool used in athletes to determine the maximum intermittent aerobic speed (VO2max); the results of this test allow later to plan the specific training protocol of the sports team.	1 week
Lactate in blood	The amount of blood lactate will be measured after inspiratory muscle training with a lactate meter, its results will be expressed in the unit of measure mg / dL.	1 week
Static equilibrium	Static equilibrium was obtained through an analysis of stabilometric variables on an equilibrium platform. The players had to stand on the platform with bipodal support (45º) for 90 seconds with eyes open and 90 seconds with eyes closed. During the measurement with their eyes open, the players had to keep their gaze on a fixed point that coincided with the height of their eyes and was about 2.5 meters from the platform. A FreeStep platform (Rome, Italy) was used	1 week

Collaborators and Investigators

• Sponsor: Grupo de Investigacion en Fisioterapia Cardiovascular y Respiratoria
• Collaborators: Universidad Católica San Antonio de Murcia
• Investigators: Principal Investigator: Martha C León Garzón, Therapy, Catholic University San Antonio of Murcia

Publications and helpful links

General Publications

• Ozmen T, Gunes GY, Ucar I, Dogan H, Gafuroglu TU. Effect of respiratory muscle training on pulmonary function and aerobic endurance in soccer players. J Sports Med Phys Fitness. 2017 May;57(5):507-513. doi: 10.23736/S0022-4707.16.06283-6. Epub 2016 Feb 12.
• Guy JH, Edwards AM, Deakin GB. Inspiratory muscle training improves exercise tolerance in recreational soccer players without concomitant gain in soccer-specific fitness. J Strength Cond Res. 2014 Feb;28(2):483-91. doi: 10.1519/JSC.0b013e31829d24b0.
• Nicks CR, Morgan DW, Fuller DK, Caputo JL. The influence of respiratory muscle training upon intermittent exercise performance. Int J Sports Med. 2009 Jan;30(1):16-21. doi: 10.1055/s-2008-1038794. Epub 2008 Oct 30.

Study record dates

Study Major Dates

• Study Start (Actual): January 30, 2018
• Primary Completion (Actual): June 30, 2018
• Study Completion (Actual): July 30, 2018

Study Registration Dates

• First Submitted: November 22, 2017
• First Submitted That Met QC Criteria: December 19, 2017
• First Posted (Actual): December 27, 2017

Study Record Updates

• Last Update Posted (Actual): November 26, 2021
• Last Update Submitted That Met QC Criteria: November 24, 2021
• Last Verified: November 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Respiratory Tract Diseases; Respiration Disorders; Respiratory Aspiration
• Other Study ID Numbers: PMAFI-12/16

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No