Respiratory Function

8

Review clinical trials related to Respiratory Function. Use filters to narrow results by trial status, phase, treatment, biological sex and sponsor.

Condition / disease
Location
Status: Not yet recruiting

The Effect of Curve Type Determined According to the Rigo Classification on Respiratory Muscle Strength, Quality of Life, and Functional Status in Individuals Diagnosed With Adolescent Idiopathic Scoliosis.

Adolescent Idiopathic Scoliosis (AIS) is a disorder that occurs between the ages of 10 and 18, with an unknown etiology, and is characterized by a three-dimensional deformity of the spine. It is often asymptomatic at onset but may progressively lead to cosmetic and functional impairments over time. The Rigo classification, which evaluates the structural characteristics of scoliosis, is a three-dimensional functional classification system that takes into account the direction of the curve and the involved spinal regions In studies conducted on individuals with AIS, a significant reduction in respiratory muscle strength (MIP-Maximum Inspiratory Pressure and MEP-Maximum Expiratory Pressure) has been observed, and this condition has been associated with thoracic rigidity and decreased physical activity . In individuals with AIS, a significant negative correlation has been reported between Cobb angle and FVC and FEV₁ values, as well as a moderate negative correlation between trunk rotation angle (ATR) and respiratory muscle strength (MIP and MEP). In light of these findings, it has been shown that as the severity of scoliosis increases, lung volumes decrease, and that scoliosis may affect respiration not only through a two-dimensional curvature angle but also through three-dimensional structural changes such as trunk rotation. Curves concentrated in the thoracic region according to the Rigo classification demonstrate more pronounced reductions in MIP and MEP values The impact of AIS on quality of life has been evaluated, and it has been reported that individuals with AIS score lower than healthy individuals in domains such as body image, pain, mental health, and function

Participants needed: 120
Trial details
Age: 12-18Biological sex: AllType: ObservationalSponsor: Istanbul Physical Medicine Rehabilitation Training and Research HospitalUpdated: Oct 7, 2026
Eligibility criteria

Not listed

Status: Recruiting

AirGo™ Respiratory Monitoring in Lung Resection

Patients undergoing lung resection surgery may experience changes in respiratory function during the perioperative period. Current monitoring methods provide important clinical information but are often limited to specific time points and may not allow continuous assessment of ventilation. This study aims to evaluate the feasibility and usefulness of the AirGo™ wearable respiratory monitoring system in patients undergoing anatomical lung resection (lobectomy or segmentectomy). AirGo™ is a non-invasive, CE-marked device that continuously measures respiratory parameters, including minute ventilation and respiratory rate, through a chest-worn sensor. Participants will wear the AirGo™ device before surgery and during the postoperative period. Respiratory parameters collected by AirGo™ will be analyzed at predefined time points and compared with standard clinical monitoring methods routinely used in postoperative care, including pulse oximetry and telemetry. The primary objective is to assess changes in mean minute ventilation from the preoperative period to the first postoperative day. Secondary objectives include evaluating perioperative respiratory trends, patient comfort and compliance with the device, and the agreement between AirGo™ measurements and standard monitoring systems. The results of this study may help determine whether continuous non-invasive respiratory monitoring can improve the assessment and management of patients undergoing lung surgery.

Participants needed: 20
Trial details
Age: 21-80Biological sex: AllType: InterventionalSponsor: Fondazione IRCCS Policlinico San Matteo di PaviaUpdated: Sep 24, 2026Locations: 1
Eligibility criteria

Patients scheduled for minimally invasive anatomical lung resection, specificall... [+3]

Pre-operative presence of pneumothorax and/or pleural effusion [+12]

Status: Not yet recruiting

Acute and Long-Term Effects of Integrated Myofascial Release Therapy on Respiratory Function in Healthy Adults

This study will investigate the immediate and longer-term effects of integrated myofascial release therapy on breathing-related outcomes in healthy adults. Participants will receive integrated myofascial release therapy twice a week for 6 weeks, for a total of 12 treatment sessions. Assessments will be performed before treatment, immediately after the first treatment session, at the end of the 6-week treatment period, and 1 month and 3 months after treatment. The study will evaluate pulmonary function, cough strength, and chest mobility. The aim is to determine both the immediate response to a single treatment session and whether repeated treatment produces effects that are maintained during follow-up.

Participants needed: 40
Trial details
Age: 18+Biological sex: AllType: InterventionalSponsor: Karabuk UniversityUpdated: Sep 16, 2026Locations: 1
Eligibility criteria

Age 18 years or older. [+3]

Asthma, clinically significant dyspnea, or chronic pulmonary disease. [+4]

Status: Not yet recruiting

Effects of Core and Inspiratory Muscle Training on Muscle Oxygenation and Athletic Performance İn Young Soccer Players

The purpose of this randomized controlled trial is to investigate the effects of core training and inspiratory muscle training (IMT) on muscle oxygenation and athletic performance in youth male soccer players aged 15-18. A total of 54 healthy soccer players will be included and randomly assigned into three equal groups: the Control Group, the Core Training Group, and the Core Training + IMT Group. All interventions will be implemented for 8 weeks in addition to routine soccer training sessions. Assessments will be performed at baseline (Week 0), mid-intervention (Week 4), and post-intervention (Week 8). The primary outcome measures of the study are aerobic capacity assessed by the Yo-Yo Intermittent Recovery Test Level 1 and muscle oxygenation parameters monitored via near-infrared spectroscopy (NIRS) using a MOXY monitor. Secondary outcome measures include sprint performance, agility, dynamic balance, core muscle strength and endurance, inspiratory muscle strength, lower extremity explosive power, and soccer-specific technical performance tests. Overall, this study aims to reveal the combined effects of core training and inspiratory muscle training on muscle oxygenation, respiratory functions, aerobic capacity, and soccer performance, while explaining the underlying physiological mechanisms in youth athletes.

Participants needed: 54
Trial details
Age: 15-18Biological sex: MaleType: InterventionalSponsor: Istinye UniversityUpdated: Jun 18, 2026Locations: 1
Eligibility criteria

Being between 15 and 18 years of age. [+7]

Having a history of lower extremity, trunk-core, or athletic performance-limitin... [+15]

Status: Not yet recruiting

Effects of Diaphragmatic Breathing During Equipment-Based Pilates in Women

This randomized controlled study aims to investigate the effects of diaphragmatic breathing exercises on core stabilization muscle strength, peak expiratory flow (PEF), and chest expansion in women performing equipment-based Pilates. A total of 44 healthy women aged 20 to 50 years who regularly participate in equipment-based Pilates exercises will be recruited and randomly assigned to one of two groups. The intervention group will receive equipment-based Pilates training combined with diaphragmatic breathing exercises, while the control group will receive equipment-based Pilates training only. Both groups will participate in supervised exercise sessions twice weekly for 8 weeks. Core stabilization muscle strength, peak expiratory flow, and chest expansion measurements will be assessed before and after the intervention period. The findings of this study may contribute to a better understanding of the additional effects of diaphragmatic breathing exercises on respiratory function and core stabilization in women performing Pilates.

Participants needed: 44
Trial details
Age: 20-50Biological sex: FemaleType: InterventionalSponsor: Istanbul Aydın UniversityUpdated: Jun 18, 2026Locations: 1
Eligibility criteria

Not listed

Status: Not yet recruiting

Respiratory Function and Athletic Performance in Professional Soccer Players

This prospective observational study aims to investigate the relationship between respiratory function and multidimensional athletic performance parameters in professional soccer players. The primary hypothesis of the study is that soccer players with enhanced respiratory function and superior respiratory muscle strength will exhibit optimized motor performance outcomes and shorter (faster) reactive reaction times. Investigators will evaluate respiratory muscle strength, spirometric pulmonary functions, dynamic balance, core and abdominal endurance, and reactive visuomotor reaction times during a single testing session within the competitive season.

Participants needed: 31
Trial details
Age: 18-35Biological sex: MaleType: ObservationalSponsor: Istinye UniversityUpdated: Jun 1, 2026
Eligibility criteria

Participants will be actively competing, licensed professional soccer players. -... [+1]

Participants will be excluded if they present with an acute upper or lower respi... [+4]

Status: Recruiting

Functional and Respiratory Determinants of Long-Term Colorectal Cancer Outcomes

Colorectal cancer is one of the most commonly diagnosed malignancies worldwide and a leading cause of cancer-related morbidity and mortality. Its global incidence continues to increase, with a substantial proportion of cases diagnosed at advanced stages, which adversely affects prognosis. Patients diagnosed at an early stage and treated with surgery have significantly better long-term survival outcomes. Five-year survival rates are approximately 90% for stage I disease, decreasing to around 70% in stage II and 60% in stage III, and dropping to as low as 8% in stage IV disease. Advanced age, family history, and environmental exposures are well-established risk factors for colorectal cancer. In addition, modifiable lifestyle factors-including smoking, physical inactivity, unhealthy dietary patterns, and obesity-have been shown to significantly increase the risk of disease. Although surgical resection remains the cornerstone of curative treatment in colorectal cancer, long-term outcomes are influenced not only by tumor stage but also by various patient-related factors, including comorbidities, functional capacity, and respiratory reserve. Functional status, which reflects a patient's ability to perform activities of daily living, is a key determinant of postoperative recovery and long-term outcomes. Reduced functional capacity has been associated with poorer long-term survival, diminished quality of life, and increased late morbidity. Therefore, objective preoperative assessment of functional status is considered essential for predicting long-term prognosis. Respiratory function also plays a critical role, particularly in patients undergoing abdominal surgery. Impaired pulmonary capacity increases the risk of postoperative pulmonary complications, prolongs hospital stay, and may indirectly affect long-term survival. However, studies evaluating the impact of preoperative respiratory parameters on long-term outcomes in patients with colorectal cancer remain limited. Furthermore, comprehensive analyses integrating both functional capacity and respiratory function are scarce in the current literature. Therefore, further investigation in this area is warranted. The aim of this study is to evaluate the impact of functional status and respiratory parameters on long-term clinical outcomes in patients with colorectal cancer. H0: There is no statistically significant association between functional status, respiratory parameters, and long-term clinical outcomes in patients with colorectal cancer. H1: There is a statistically significant association between functional status, respiratory parameters, and long-term clinical outcomes in patients with colorectal cancer.

Participants needed: 52
Trial details
Age: 18-80Biological sex: AllType: ObservationalSponsor: Inonu UniversityUpdated: Apr 13, 2026Locations: 1Duration: 2 Years
Eligibility criteria

Age between 18 and 80 years [+1]

Presence of musculoskeletal disorders that may prevent completion of the require... [+3]

Status: Recruiting

The Effects of a Mindfulness Program on Running Performance, Respiratory Function, and Heart Rate Variability

Broadly, the objective of the research is to evaluate the effectiveness of a specific breathwork program (Les Mills Breath) on various physiological variables related to running performance, compared to a mindfulness control (20 minutes of guided meditation). There are three specific research questions: 1) Does daily participation in a 20-minute breathwork program improve respiratory function more than a mindfulness control intervention? 2) Does daily participation in a 20-minute breathwork program improve heart rate variability (an indicator of parasympathetic nervous system activity which is associated with enhanced exercise recovery) more than a mindfulness control intervention? 3) Does daily participation in a 20-minute breathwork program increase self-selected running speeds at relative moderate and vigorous intensities more than a mindfulness control intervention? The intended outcomes of the current research are to contribute to the field of research which has examined various forms of "respiratory training" and their effects on athletic performance, specifically running. While certain training protocols have been shown to be effective, there are issues of accessibility which persist. Methods of respiratory training/breathwork which are more easily available to recreational athletes are understudied with regards to running performance, hence the current research.

Participants needed: 20
Trial details
Age: 19+Biological sex: AllType: InterventionalSponsor: University of the Fraser ValleyUpdated: Apr 13, 2026Locations: 1
Eligibility criteria

Must pass the Get Active Questionnaire to assess physical activity risk [+1]

Running more than 520 minutes per week