ArticleBrazilian journal of cardiovascular surgery2020
Concurrent Validity of the Static and Dynamic Measures of Inspiratory Muscle Strength: Comparison between Maximal Inspiratory Pressure and S-Index.
Article in Brazilian journal of cardiovascular surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07598292 (Prediction Models for Dynamic Respiratory Muscle Strength in COPD and Asthma Patients Based on Constant-Pressure Inspiratory Muscle Performance), which is not on this map. Cited by 13 papers, 1 of them a synthesis that pooled it.
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Prediction Models for Dynamic Respiratory Muscle Strength in COPD and Asthma Patients Based on Constant-Pressure Inspiratory Muscle Performance
Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Psychometric properties of volitional tests used to measure respiratory muscle strength and endurance: A systematic review.Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR · 2025Pooled it
- Prediction models for dynamic respiratory muscle strength in COPD and asthma patients based on fixed-pressure inspiratory muscle performance.BMC pulmonary medicine · 2026Article
- Does the choice of inspiratory muscle training modality affect respiratory and peripheral muscle function in chronic kidney disease?International urology and nephrology · 2026Article
- Impact of Inspiratory Muscle Training in Individuals with Gastroesophageal Reflux Disease: A Randomized Controlled Trial Protocol.Methods and protocols · 2026Article
- Reference equation for measurement of the maximal dynamic inspiratory muscle pressure index (S-Index) in healthy Brazilian adults.Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2026Article
- Reference values for respiratory muscle strength measured with the S-Index Test in well-trained athletes, e-sports athletes and age-matched controls.Experimental physiology · 2025Article
- Effects of Threshold Pressure Loading Exercises Applied to Inspiratory Muscles in Taekwondo Athletes on the Concentration and Utilization of Lactate.Journal of human kinetics · 2025Article
- Validity and Short-Term Repeatability of a Novel Hand-Held Respiratory Health Meter for the Assessment of Dynamic Maximal Respiratory Pressures in Healthy Young Adults.Medical devices (Auckland, N.Z.) · 2025Article
- Maximal dynamic inspiratory pressure: S-Index prediction values and diagnosis accuracy.Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2025Article
- Incremental Ramp Load Protocol to Assess Inspiratory Muscle Endurance in Healthy Individuals: Comparison with Incremental Step Loading Protocol.Brazilian journal of cardiovascular surgery · 2024Article
- Exploring Indicators for Training Load Control in Young Swimmers: The Role of Inspiratory Spirometry Outcomes.Journal of functional morphology and kinesiology · 2024Article
- The impact of threshold-loaded inspiratory muscle training and respiratory biofeedback on preserving inspiratory muscle strength and vital capacity after CABG: a randomized clinical trial.American journal of cardiovascular disease · 2024Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo verify the concurrent validity between the inspiratory muscle strength (IMS) values obtained in static (maximal inspiratory pressure [MIP]) and dynamic (S-Index) assessments.
methodsHealthy individuals were submitted to two periods of evaluation: i) MIP, static maneuver to obtain IMS, determined by the Mueller's maneuver from residual volume (RV) until total lung capacity (TLC); ii) and S-Index, inspiration against open airway starting from RV until TLC. Both measures were performed by the same evaluator and the subjects received the same instructions. Isolated maneuvers with differences < 10% were considered as reproducible measures.
resultsData from 45 subjects (21 males) were analyzed and that showed statistical difference between MIP and S-Index values (133.5 ± 33.3 and 125.6 ± 32.2 in cmH2O, respectively), with P=0.014. Linear regression showed r2=0.54 and S-Index prediction formula = 39.8+(0.75×MIP). Pearson's correlation demonstrated a strong and significant association between the measures with r=0.74. The measurements showed good concordance evidenced by the Bland-Altman test.
conclusionS-Index and MIP do not present similar values since they are evaluations of different events of the muscular contraction. However, they have a strong correlation and good agreement, which indicate that both are able to evaluate the IMS of healthy individuals.
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