Interacting effects of cognitive load and adult age on the regularity of whole-body motion during treadmill walking.

@article{Verrel2009InteractingEO,
  title={Interacting effects of cognitive load and adult age on the regularity of whole-body motion during treadmill walking.},
  author={Julius Verrel and Martin L{\"o}vd{\'e}n and Michael Schellenbach and Sabine Schaefer and Ulman Lindenberger},
  journal={Psychology and aging},
  year={2009},
  volume={24 1},
  pages={75-81}
}
We investigated effects of concurrent cognitive task difficulty (n-back) on the regularity of whole-body movements during treadmill walking in women and men from 3 age groups (20-30, 60-70, and 70-80 years old). Using principal component analysis of individual gait patterns, we separated main (regular) from residual (irregular) components of whole-body motion. Proportion of residual variance (RV) was used as an index of gait irregularity. The gait in all age groups became more regular (reduced… CONTINUE READING

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