Critical inspiratory pressure - new methodology for evaluating and training the inspiratory musculature for recreational cyclists: study protocol for a randomized control trial

• DOI: 10.21203/rs.2.178/v2
• Publication Date: 2019-03-03T15:22:26Z
• Authors: Patricia Rehder-S...; Vinicius Minatel; Juliana Cristina ...; Étore De Favari S...; Raphael Martins d...; Carla Cristina Dato; Aparecida Maria C...
• Keywords: Adult; Male; Medicine (General); Time Factors; Breathing Exercises; Physical performance; Study Protocol; Young Adult; 03 medical and health sciences; R5-920; Oxygen Consumption; 0302 clinical medicine; Double-Blind Method; Pressure; Humans; Critical power; Muscle Strength; Physiotherapy; Respiratory muscle; Randomized Controlled Trials as Topic; Physical exercise; Respiratory Muscles; Bicycling; Respiratory Function Tests; 3. Good health; Treatment Outcome; Cardiorespiratory Fitness; Inhalation; Exercise Test; Physical Endurance; Muscle Contraction

Abstract Background: Inspiratory muscle training(IMT) has brought great benefits to improving physical performance in healthy individuals. However, there is no consensus regarding the best training load as most cases maximum inspiratory pressure(MIP) been used, whereby 60% of MIP used. Therefore, prescription an IMT protocol that takes into account respiratory strength and endurance may bring additional commonly used protocols muscles differ from other because their greater muscular resistance. Thus, using critical pressure(PThC) appears alternative since calculation PThC considers these characteristics. aim this study propose a new determine for recreational cyclists. Methods: Thirty cyclists(between 20-40 years) will be randomized SHAM Group(SG), Group(PCG) Group(60G), taking age aerobic functional capacity. All participants undergo following evaluations: pulmonary function test(PFT), test(RMS), cardiopulmonary test(CPET), incremental test(iRME) [maximum sustained pressure 1 minute(PThMAX)] constant test(CLT) (95%, 100% 105% PThMÁX) linear resistor(PowerBreathe K5). The calculated time(TLIM) loads each CLT. last 11 weeks(3 times/week hour/session). session consist 5-minute warm-ups(50% load) 3 sets 15-minute breaths (100% load), with minute interval between them. RMS, iRME, CLT CPET performed before, at week 7(to adjust after training. PFT before data analyzed by specific statistical tests (parametric or non-parametric) according distribution respective variances. p <0.05 established. Conclusions: It expected results enable health professionals tool evaluate prescribe IMT. Clinical Trial: ClinicalTrial.gov, ID Number NCT02984189. Registered December 6, 2016, https://clinicaltrials.gov/ct2/show/NCT02984189.