9:37 Ventilatory functional restriction in adolescents with mild or moderate scoliosis during maximal exercise tolerance test
| Autor: | Nieves De Bernardo, José Ignacio Maruenda, Luis Garcı́a Del Moral, Cristina Pérez-Encinas, Carlos Barrios, Pablo Renovell, Manuel Laguı́a, Juan Antonio Martı́n-Benlloch |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Spirometry
medicine.medical_specialty medicine.diagnostic_test business.industry VO2 max Scoliosis medicine.disease Respiratory quotient FEV1/FVC ratio Internal medicine Heart rate medicine Physical therapy Cardiology Surgery Orthopedics and Sports Medicine Neurology (clinical) Treadmill business Anaerobic exercise |
| Zdroj: | The Spine Journal. 2:78-79 |
| ISSN: | 1529-9430 |
| Popis: | Purpose of study: To evaluate cardiopulmonary function during a maximal exercise tolerance test in patients with adolescent idiopathic scoliosis (AIS) with mild curves and compare to results obtained in healthy adolescents of the same age. Methods used: Twenty-three girls with AIS with an average age of 13.5 years (range, 10 to 16 years) and an average scolitic curve of 27 degrees Cobb (range, 20 to 45) were studied by basal spirometry and dynamic ventilatory parameters during a maximal exercise tolerance test. Similar studies were performed in a control group of five healthy girls matched in age. Exercise test consisted of a ramp protocol on treadmill starting at a speed of 0.75 m/sg (2.7 km/hour) with increments of 0.2 m/second (0.72 km/hour) per minute. The slope remained constant at 1.5%. During the test, girls move from walking to running on their own accord. All subjects completed the test to exhaustion to determine maximal oxygen uptake (VO 2 max). Electrocardiogram was continuously monitored during the tolerance exercise test. of findings: There were no differences between scoliotic and healthy girls in basal ventilatory parameters (FVC, FEV 1 ; Table 1 ) Table 1 . Exercise tolerance test FVC (l) Speedmax (km/h) HR max VEmax (l/min) VO 2 max (ml/ min/kg) AT (km/h) R (VCO 2 / VO 2 ) AIS patients 2.95 9.53 184 66.7 39.3 7.64 1.11 Controls 3.14 13.82 192 95.8 55.2 11.74 1.10 p value NS NS NS . Patients with AIS showed worse tolerance to exercise test with lower maximal speed average (31% lower than controls), lower ventilatory efficiency at maximal exercise (31% deficit), early anaerobic threshold and a lower aerobic power expressed by decreased body mass normalized VO 2 max (29% restriction). Heart rate and respiratory coefficient were similar in both groups, indicating that tolerance test was performed at similar maximal conditions. |
| Databáze: | OpenAIRE |
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