Introduction: SpiroTiger® is a device allowing a specific training of respiratory muscles without overloading the cardiovascular and locomotor systems. SpiroTiger uses the method of hyperpnea isocapnica, which means to produce a considerable increase in respiratory rate maintaining constant the partial pressure of carbone dioxide. Objective: to assess the repeatability of total volume breathed (TVB) estimated by the SpiroTiger during a specifically designed protocol. Method: Before to start the repeatability protocol, participants completed a seven week period of training to allow physiological adaptation to avoid biased results in the repeatability test. The conditioning sessions allow to reach a point of stability in the lung capacity. The test consisted in 3 trials a day for 3 non consecutive days; the recovery time between two trials was set in 90 minutes. The test protocol consisted, after a warm up, in two minutes at high breathing frequencies (36 breaths/min). Participants were 8 young judo athletes (6 boys and 2 girls) with a mean age of 16 ± 6 years and 7 ± 2 of years sport experience. The repeatability of the TVB estimates was calculated with the Intraclass Correlation Coefficient (ICC), the variance due to trials (VT) and the variance due to days (VD). Moreover, the standard error of the mean for each subject (SEMw) and among all subjects (SEMa) were calculated. Results and discussion: The results show that the SpiroTiger® offers a very repeatable measure of TVB since ICC was found greater than 80%. The portion of variance due to day-to-day repetitions (12%) was found greater than the variance due to trial-to-trial repetitions (8%). The SEMw was 1,8% and the SEMa was 4,9%. Conclusion: The high value of ICC confirmed the great repeatability of the SpiroTiger® estimates, highlighting that the differences observed in the test were mainly due to subjects differences. Finally, TVB estimates were available with high precision since SEMw was find lower than 2%.
Repeatability of volume breathed assessed by SpiroTiger® in young athletes
GOLLIN, MASSIMILIANO;ROPPOLO, MATTIA;RAINOLDI, Alberto
2011-01-01
Abstract
Introduction: SpiroTiger® is a device allowing a specific training of respiratory muscles without overloading the cardiovascular and locomotor systems. SpiroTiger uses the method of hyperpnea isocapnica, which means to produce a considerable increase in respiratory rate maintaining constant the partial pressure of carbone dioxide. Objective: to assess the repeatability of total volume breathed (TVB) estimated by the SpiroTiger during a specifically designed protocol. Method: Before to start the repeatability protocol, participants completed a seven week period of training to allow physiological adaptation to avoid biased results in the repeatability test. The conditioning sessions allow to reach a point of stability in the lung capacity. The test consisted in 3 trials a day for 3 non consecutive days; the recovery time between two trials was set in 90 minutes. The test protocol consisted, after a warm up, in two minutes at high breathing frequencies (36 breaths/min). Participants were 8 young judo athletes (6 boys and 2 girls) with a mean age of 16 ± 6 years and 7 ± 2 of years sport experience. The repeatability of the TVB estimates was calculated with the Intraclass Correlation Coefficient (ICC), the variance due to trials (VT) and the variance due to days (VD). Moreover, the standard error of the mean for each subject (SEMw) and among all subjects (SEMa) were calculated. Results and discussion: The results show that the SpiroTiger® offers a very repeatable measure of TVB since ICC was found greater than 80%. The portion of variance due to day-to-day repetitions (12%) was found greater than the variance due to trial-to-trial repetitions (8%). The SEMw was 1,8% and the SEMa was 4,9%. Conclusion: The high value of ICC confirmed the great repeatability of the SpiroTiger® estimates, highlighting that the differences observed in the test were mainly due to subjects differences. Finally, TVB estimates were available with high precision since SEMw was find lower than 2%.
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