TY  - JOUR
A1  - Müller, Juliane
A1  - Müller, Steffen
A1  - Baur, Heiner
A1  - Mayer, Frank
T1  - Intra-individual gait speed variability in healthy children aged 1-15 years
JF  - Gait & posture
N2  - Introduction: Gait speed is one of the most commonly and frequently used parameters to evaluate gait development. It is characterized by high variability when comparing different steps in children. The objective of this study was to determine intra-individual gait speed variability in children.
 Methods: Gait speed measurements (6-10 trials across a 3 m walkway) were performed and analyzed in 8263 children, aged 1-15 years. The coefficient of variation (CV) served as a measure for intra-individual gait speed variability measured in 6.6 +/- 1.0 trials per child. Multiple linear regression analysis was conducted to evaluate the influence of age and body height on changes in variability. Additionally, a subgroup analysis for height within the group of 6-year-old children was applied.
 Results: A successive reduction in gait speed variability (CV) was observed for age groups (age: 1-15 years) and body height groups (height: 0.70-1.90 m). The CV in the oldest subjects was only one third of the CV (CV 6.25 +/- 3.52%) in the youngest subjects (CV 16.58 +/- 10.01%). Up to the age of 8 years (or 1.40 m height) there was a significant reduction in CV over time, compared to a leveling off for the older (taller) children.
 Discussion: The straightforward approach measuring gait speed variability in repeated trials might serve as a fundamental indicator for gait development in children. Walking velocity seems to increase to age 8. Enhanced gait speed consistency of repeated trials develops up to age 15.
KW  - Development
KW  - Gait
KW  - Speed
KW  - Variability
KW  - Children
Y1  - 2013
U6  - https://doi.org/10.1016/j.gaitpost.2013.02.011
SN  - 0966-6362
SN  - 1879-2219
VL  - 38
IS  - 4
SP  - 631
EP  - 636
PB  - Elsevier
CY  - Clare
ER  - 
TY  - CHAP
A1  - Hain, Gerrit
A1  - Müller, Juliane
A1  - Müller, Steffen
A1  - Reschke, Antje
A1  - Mayer, Frank
T1  - Reliability of an in-vivo 3-segmental kinematic trunk model in a one-handed lifting task
T2  - Medicine and science in sports and exercise : official journal of the American College of Sports Medicine
Y1  - 2013
SN  - 0195-9131
SN  - 1530-0315
VL  - 45
IS  - 5
SP  - 174
EP  - 174
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  - 
TY  - CHAP
A1  - Reschke, Antje
A1  - Müller, Juliane
A1  - Müller, Steffen
A1  - Engel, Tilman
A1  - Mayer, Frank
T1  - Three-dimensional spine kinematics during perturbed treadmill walking - a pilot study
T2  - Medicine and science in sports and exercise : official journal of the American College of Sports Medicine
Y1  - 2013
SN  - 0195-9131
SN  - 1530-0315
VL  - 45
IS  - 5
SP  - 172
EP  - 172
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  - 
TY  - CHAP
A1  - Engel, Tilman
A1  - Müller, Juliane
A1  - Müller, Steffen
A1  - Reschke, Antje
A1  - Kopinski, Stephan
A1  - Mayer, Frank
T1  - Validity and reliability of a new customised split-belt treadmill provoking unexpected walking perturbations
T2  - Medicine and science in sports and exercise : official journal of the American College of Sports Medicine
Y1  - 2013
SN  - 0195-9131
SN  - 1530-0315
VL  - 45
IS  - 5
SP  - 462
EP  - 462
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  -