ABSTRACT
Objective: To evaluate the markers of stress before and after a session of assisted physicalexercise in infants born before 35 weeks’ gestation. Methods: 25 infants born at 280/7 to 346/7weeks were subjected to assisted physical exercise daily for about 10-15 min at one week ofpostnatal age or 33 weeks of post menstrual age, whichever was later. Primary outcome wassalivary cortisol and secondary outcome was Premature infant pain profile (PIPP) score.Outcomes were measured, on day 5 (±1) of exercise. Results: There was no difference insalivary cortisol between baseline and immediately after (P=0.16), at 90 min (P=0.6) or 120min (P=0.7) after exercise. Salivary cortisol was lower at 30 min after exercise as compared tobaseline (mean difference -0.08 ?g/dL; 95% CI -0.16 to -0.002; P=0.04). The median (IQR)PIPP score was significantly higher at 5 min into exercise (4 (3-6) vs 4 (3-5); P=0.04) and atcompletion of exercise 6 (4-8) vs 4 (3-5); P<0.01), as compared to baseline. Conclusion:Assisted physical exercise does not seem to result in stress in premature infants
ABSTRACT
Objective: To compare the efficacy of daily assisted physicalexercise (starting from one week of postnatal age) on bonestrength at 40 weeks of post menstrual age to no intervention ininfants born between 27 and 34 weeks of gestation.Design: Open-label randomized controlled trial.Setting: Tertiary-care teaching hospital in northern India from 16May, 2013 to 21 November, 2013.Participants: 50 preterm neonates randomized to Exercisegroup (n=26) or Control group (n=24).Intervention: Neonates in Exercise group underwent onesession of physical exercise daily from one week of age, whichincluded range-of-motion exercises with gentle compression,flexion and extension of all the extremities with movements ateach joint done five times, for a total of 10-15 min. Infants inControl group underwent routine care and were not subjected toany massage or exercise Outcome measures:Primary: Bone speed of sound of lefttibia measured by quantitative ultrasound at 40 weeks postmenstrual age. Secondary:Anthropometry (weight length andhead circumference) and biochemical parameters (calcium,phosphorus, alkaline phosphatase) at 40 weeks post menstrualage.Results:The tibial bone speed of sound was comparablebetween the two groups [2858 (142) m/s vs. 2791 (122) m/s;mean difference 67.6 m/s; 95% CI - 11 to 146 m/s; P=0.38]. Therewas no difference in anthropometry or biochemical parameters.Conclusion:Daily assisted physical exercise does not affectthe bone strength, anthropometry or biochemical parameters inpreterm (27 to 34 weeks) infants.