Advertisement

The effect of corrective surgery on energy expenditure during ambulation in children with cerebral palsy

  • G. O. DahlbÄck
  • R. Norlin
Article

Summary

Mechanical efficiency, heart rate, blood lactate, and some other variables were studied in six children with cerebral palsy who walked on a treadmill before and after corrective surgery. During each test, conducted at each child's naturally selected speed, two situations were studied: steady state level walking for 9 min, and then walking at an increasing inclination up to 20% for another 10 min. During the test the subjects were allowed to hold on to a handrail to eliminate the risk of falling off the treadmill. The corrective surgery resulted in a 5% reduction in oxygen consumption per kg body mass during level walking. The subjects' levels of physical fitness, as estimated from oxygen pulse, however, were unchanged. These results are indicative of a biomechanical improvement due to the corrective surgery. While walking at a 20% inclination the subjects off loaded themselves to different degrees on the handrail which influenced the results. Their feeling of exhaustion at this load was probably due to local factors, since heart rate was well below maximal values, and blood lactate, respiratory exchange ratio and ventilatory equivalent also indicated that they were below their anaerobic thresholds (50–60% of maximal oxygen uptake).

Key-words

Cerebral palsy Children Ambulation Oxygen consumption 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Andersson KL, Seliger V, Rutenfranz J, Nesset T (1980) Physical performance capacity of children in Norway. Eur J Appl Physiol 45: 155–166Google Scholar
  2. Berg K (1970) Adaptation in cerebral palsy of body composition, nutrition and physical working capacity at school age. Acta Paediatr Scand [Suppl] 204: 1–93Google Scholar
  3. DahlbÄck GO, Fallhagen L-G, Forsström E (1983) Work capacity test program with argon dilution technique. Dept of clinical physiology, University of Linköping, Linköping, SwedenGoogle Scholar
  4. Davis JA, Frank MH, Whipp BJ, Wasserman K (1979) Anaerobic threshold alterations caused by endurance training in middle-aged men. J Appl Physiol 46: 1039–1046Google Scholar
  5. Dresen MHW, de Groot G, Brandt Carstius JJ, Krediet GHB, Meijer MGH (1982) Physical work capacity and daily activities of handicapped and non-handicapped children. Eur J Appl Physiol 48:241–251Google Scholar
  6. Givoni B, Goldman RF (1971) Predicting metabolic energy cost. J Appl Physiol 30:429–433Google Scholar
  7. Karlsson J, Jacobs I (1982) Onet of blood lactate accumulation during muscular exercise as a threshold concept. Int J Sports Med 3:190–201Google Scholar
  8. Lundberg å (1976) Oxygen consumption in relation to work load in students with cerebral palsy. J Appl Physiol 40:873–875Google Scholar
  9. Molbech S (1966) Energy cost in level walking in subjects with an abnormal gait. Comm Dan Nat Ass Infant Paral 22:3–11Google Scholar
  10. Perry J, Jones MH, Thomas L (1981) Functional evaluation of Rolfing in cerebral palsy. Dev Med Child Neurol 23:717–729Google Scholar
  11. Rothman JG (1978) Effect of respiratory exercises on the vital capacity and forced expiratory volume in children with cerebral palsy. Phys Ther 58:421–425Google Scholar
  12. Wasserman K, Whipp BJ, Koyal SN, Beaver WL (1973) Anaerobic threshold and respiratory gas exchange during exercise. J Appl Physiol 35:236–243Google Scholar
  13. Waters RL, Hislop HJ, Thomas L, Campbell J (1983) Energy cost of walking in normal children and teenagers. Dev Med Child Neurol 25:184–188Google Scholar

Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • G. O. DahlbÄck
    • 1
  • R. Norlin
    • 2
    • 3
  1. 1.Department of Clinical PhysiologyEkhaga
  2. 2.Department of Orthopedic Surgery, Department of NeurophysiologyEkhaga
  3. 3.Department of Pediatrie HabilitationUniversity HospitalLinköpingSweden

Personalised recommendations