Article

This cross-sectional study investigates deficits and associations in
muscle strength, 6-minute walking distance (6MWD), aerobic capacity (VO(2peak)),
and physical activity (PA) in independent ambulatory children with lumbosacral
spina bifida. METHOD: Twenty-tree children participated (13 boys, 10 girls). Mean
age (SD): 10.4 (+/-3.1) years. Muscle strength (manual muscle testing and
hand-held dynamometry), 6MWD, VO(2peak) (maximal exercise test on a treadmill),
and PA (quantity and energy expenditure [EE]), were measured and compared with
aged-matched reference values. RESULTS: Strength of upper and lower extremity
muscles, and VO(2peak) were significantly lower compared to reference values.
Mean Z-scores ranged from -1.2 to -2.9 for muscle strength, and from -1.7 to -4.1
for VO2peak. EE ranged from 73 - 84% of predicted EE. 6MWD was significantly
associated with muscle strength of hip abductors and foot dorsal flexors.
VO(2peak) was significantly associated with strength of hip flexors, hip
abductors, knee extensors, foot dorsal flexors, and calf muscles. CONCLUSIONS:
These children have significantly reduced muscle strength, 6MWD, VO(2peak) and
lower levels of PA, compared to reference values. VO(2peak) and 6MWD were
significantly associated with muscle strength, especially with hip abductor and
ankle muscles. Therefore, even in independent ambulating children training on
endurance and muscle strength seems indicated.

Langue : ANGLAIS