HOMEPRODUCTSCOMPANYCONTACTFAQResearchDictionaryPharmaSign Up FREE or Login

A comparison of the oxygen cost of locomotion in children with and without developmental coordination disorder.

AbstractAIM:
The aim of this study was to compare the oxygen cost (V(O2)) of walking and running, as well as aerobic fitness, in children with and without developmental coordination disorder (DCD).
METHOD:
Thirty-one males (17 with DCD and 14 in a comparison group; mean age 8 y 7 mo, SD 1 y 3 mo and 8 y 5 mo, SD 1 y 2 mo respectively) were tested on two separate occasions at least 1 week apart. On the first visit, motor proficiency was assessed by the McCarron Assessment of Neuromuscular Development instrument, which was followed by the determination of maximal aerobic capacity (V(O2max)). The second visit involved 4-minute bouts of treadmill walking (at 4.3 km/h and 5.8 km/h) and running (at 7.8 km/h and 8.4 km/h). Oxygen consumption, heart rate, respiratory exchange ratio, rating of perceived exertion (RPE), step rate, and qualitative assessment of locomotion were obtained for each speed.
RESULTS:
Despite poorer locomotion proficiency, there was no significant difference in the oxygen cost of walking or running between males with and without DCD. However, the DCD group had significantly higher RPE while running at 7.8 km/h (p=0.011) and had greater difficulty achieving V(O2max), resulting in significantly lower scores for aerobic fitness.
INTERPRETATION:
The differences in locomotion proficiency between children with and without DCD are not large enough to affect the oxygen cost of locomotion. However, children with DCD are more likely to withdraw from exercising at higher intensities before achieving peak performance.
AuthorsLay Chern Chia, Kym J Guelfi, Melissa K Licari
JournalDevelopmental medicine and child neurology (Dev Med Child Neurol) Vol. 52 Issue 3 Pg. 251-5 (Mar 2010) ISSN: 1469-8749 [Electronic] England
PMID19706141 (Publication Type: Journal Article)
Chemical References
  • Oxygen
Topics
  • Child
  • Humans
  • Locomotion (physiology)
  • Male
  • Motor Skills Disorders (epidemiology)
  • Oxygen (metabolism)
  • Running (physiology)
  • Walking (physiology)

Join CureHunter, for free Research Interface BASIC access!

Take advantage of free CureHunter research engine access to explore the best drug and treatment options for any disease. Find out why thousands of doctors, pharma researchers and patient activists around the world use CureHunter every day.
Realize the full power of the drug-disease research graph!


Choose Username:
Email:
Password:
Verify Password:
Enter Code Shown: