Thoraco-abdominal coordination and performance during uphill running at altitude
| Autor: | G.S. Roi, Annalisa Cogo, Eva Bernardi, Gaia Mandolesi, Maria Spiridonova, Lorenza Pratali |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Male
Pulmonology Physiology Pulmonary Function lcsh:Medicine 030204 cardiovascular system & hematology Pathology and Laboratory Medicine Running 0302 clinical medicine Medicine and Health Sciences Medicine Edema Respiratory function Public and Occupational Health Oximetry lcsh:Science Tidal volume Oxygen saturation (medicine) Multidisciplinary Respiration ventilatory pattern Middle Aged uphill running Sports Science Chemistry Breathing Physical Sciences Cardiology Female medicine.symptom Research Article Chemical Elements altitude Adult medicine.medical_specialty Respiratory rate Respiratory physiology NO 03 medical and health sciences Oxygen Consumption Signs and Symptoms Respiratory Rate ventilatory pattern oxygen saturation uphill running altitude Diagnostic Medicine Internal medicine Respiratory muscle Tidal Volume Humans Respiratory Physiology Sports and Exercise Medicine Exercise business.industry Biological Locomotion lcsh:R Biology and Life Sciences Physical Activity Hypoxia (medical) oxygen saturation Oxygen 030228 respiratory system Physical Fitness lcsh:Q business Physiological Processes |
| Zdroj: | PLoS ONE, Vol 12, Iss 3, p e0174927 (2017) PLoS ONE |
| Popis: | Introduction Running races on mountain trails at moderate-high altitude with large elevation changes throughout has become increasingly popular. During exercise at altitude, ventilatory demands increase due to the combined effects of exercise and hypoxia. Aim To investigate the relationships between thoraco-abdominal coordination, ventilatory pattern, oxygen saturation (SpO2), and endurance performance in runners during high-intensity uphill exercise. Methods Fifteen participants (13 males, mean age 42±9 yrs) ran a “Vertical Kilometer,” i.e., an uphill run involving a climb of approximately 1000 m with a slope greater than 30%. The athletes were equipped with a portable respiratory inductive plethysmography system, a finger pulse oximeter and a global positioning unit (GPS). The ventilatory pattern (ventilation (VE), tidal volume (VT), respiratory rate (RR), and VE/VT ratio), thoraco-abdominal coordination, which is represented by the phase angle (PhA), and SpO2 were evaluated at rest and during the run. Before and after the run, we assessed respiratory function, respiratory muscle strength and the occurrence of interstitial pulmonary edema by thoracic ultrasound. Results Two subjects were excluded from the respiratory inductive plethysmography analysis due to motion artifacts. A quadratic relationship between the slope and the PhA was observed (r = 0.995, p = 0.036). When the slope increased above 30%, the PhA increased, indicating a reduction in thoraco-abdominal coordination. The reduced thoraco-abdominal coordination was significantly related to reduced breathing efficiency (i.e., an increased VE/VT ratio; r = 0.961, p = 0.038) and SpO2 (r = -0.697, p |
| Databáze: | OpenAIRE |
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