Abstract
Respiratory training of premature infants was performed to determine whether improved respiratory muscle strength and/or endurance would result. Twenty-two premature infants were randomized into control and training groups for 2 wk, using inspiratory flow-resistive loads for training (75 cm H2O·L-1·s in wk 1 and 90 cm H2O·L-1·s in wk 2). Respiratory endurance was assessed by the time interval required for the development of a 5-torr rise in transcutaneous CO2 tension during the hypoventilation induced by loaded breathing, using a moderately severe resistive load (250 cm H2O·L-1·s at 1 L·min-1). Respiratory strength was assessed by the maximum negative airway pressure generated during occluded breaths, a pressure-time integral, and an effort index. Results revealed that respiratory muscle endurance, which was not initially different between control and trained groups, increased significantly after 2 wk in the trained group by 137% (median value, p < 0.05), whereas it remained unchanged in the control group (-24%). The trained group of infants also showed a significant decrease in baseline breathing frequency between the initial and final measurements taken 2 wk apart when compared with controls (p < 0.05) and a lesser increase in inspiratory time with loading in the final measurement as compared with the initial value (p < 0.05). There was no significant difference between the control and trained groups in initial or subsequent measures of respiratory muscle strength. Inspiratory flow-resistive load training appears to improve the respiratory endurance of premature infants in whom respiratory muscle fatigue has been described to play a role in the development of respiratory failure.
| Original language | English |
|---|---|
| Pages (from-to) | 613-618 |
| Number of pages | 6 |
| Journal | Pediatric Research |
| Volume | 31 |
| Issue number | 6 |
| State | Published - Jan 1 1992 |
Fingerprint
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
Cite this
The effects of respiratory training with inspiratory flow resistive loads in premature infants. / Tan, S.; Duara, Shahnaz; Neto, G. S.; Afework, M.; Gerhardt, T.; Bancalari, Eduardo.
In: Pediatric Research, Vol. 31, No. 6, 01.01.1992, p. 613-618.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effects of respiratory training with inspiratory flow resistive loads in premature infants
AU - Tan, S.
AU - Duara, Shahnaz
AU - Neto, G. S.
AU - Afework, M.
AU - Gerhardt, T.
AU - Bancalari, Eduardo
PY - 1992/1/1
Y1 - 1992/1/1
N2 - Respiratory training of premature infants was performed to determine whether improved respiratory muscle strength and/or endurance would result. Twenty-two premature infants were randomized into control and training groups for 2 wk, using inspiratory flow-resistive loads for training (75 cm H2O·L-1·s in wk 1 and 90 cm H2O·L-1·s in wk 2). Respiratory endurance was assessed by the time interval required for the development of a 5-torr rise in transcutaneous CO2 tension during the hypoventilation induced by loaded breathing, using a moderately severe resistive load (250 cm H2O·L-1·s at 1 L·min-1). Respiratory strength was assessed by the maximum negative airway pressure generated during occluded breaths, a pressure-time integral, and an effort index. Results revealed that respiratory muscle endurance, which was not initially different between control and trained groups, increased significantly after 2 wk in the trained group by 137% (median value, p < 0.05), whereas it remained unchanged in the control group (-24%). The trained group of infants also showed a significant decrease in baseline breathing frequency between the initial and final measurements taken 2 wk apart when compared with controls (p < 0.05) and a lesser increase in inspiratory time with loading in the final measurement as compared with the initial value (p < 0.05). There was no significant difference between the control and trained groups in initial or subsequent measures of respiratory muscle strength. Inspiratory flow-resistive load training appears to improve the respiratory endurance of premature infants in whom respiratory muscle fatigue has been described to play a role in the development of respiratory failure.
AB - Respiratory training of premature infants was performed to determine whether improved respiratory muscle strength and/or endurance would result. Twenty-two premature infants were randomized into control and training groups for 2 wk, using inspiratory flow-resistive loads for training (75 cm H2O·L-1·s in wk 1 and 90 cm H2O·L-1·s in wk 2). Respiratory endurance was assessed by the time interval required for the development of a 5-torr rise in transcutaneous CO2 tension during the hypoventilation induced by loaded breathing, using a moderately severe resistive load (250 cm H2O·L-1·s at 1 L·min-1). Respiratory strength was assessed by the maximum negative airway pressure generated during occluded breaths, a pressure-time integral, and an effort index. Results revealed that respiratory muscle endurance, which was not initially different between control and trained groups, increased significantly after 2 wk in the trained group by 137% (median value, p < 0.05), whereas it remained unchanged in the control group (-24%). The trained group of infants also showed a significant decrease in baseline breathing frequency between the initial and final measurements taken 2 wk apart when compared with controls (p < 0.05) and a lesser increase in inspiratory time with loading in the final measurement as compared with the initial value (p < 0.05). There was no significant difference between the control and trained groups in initial or subsequent measures of respiratory muscle strength. Inspiratory flow-resistive load training appears to improve the respiratory endurance of premature infants in whom respiratory muscle fatigue has been described to play a role in the development of respiratory failure.
UR - http://www.scopus.com/inward/record.url?scp=0026606575&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026606575&partnerID=8YFLogxK
M3 - Article
C2 - 1635824
AN - SCOPUS:0026606575
VL - 31
SP - 613
EP - 618
JO - Pediatric Research
JF - Pediatric Research
SN - 0031-3998
IS - 6
ER -