TY  - JOUR
A1  - Appiah-Dwomoh, Edem Korkor
A1  - Müller, Steffen
A1  - Mayer, Frank
T1  - Reproducibility of Static and Dynamic Postural Control Measurement in Adolescent Athletes with Back Pain
JF  - Rehabilitation Research and Practice
N2  - Static (one-legged stance) and dynamic (star excursion balance) postural control tests were performed by 14 adolescent athletes with and 17 without back pain to determine reproducibility. The total displacement, mediolateral and anterior-posterior displacements of the centre of pressure in mm for the static, and the normalized and composite reach distances for the dynamic tests were analysed. Intraclass correlation coefficients, 95% confidence intervals, and a Bland-Altman analysis were calculated for reproducibility. Intraclass correlation coefficients for subjects with (0.54 to 0.65), (0.61 to 0.69) and without (0.45 to 0.49), (0.52 to 0.60) back pain were obtained on the static test for right and left legs, respectively. Likewise, (0.79 to 0.88), (0.75 to 0.93) for subjects with and (0.61 to 0.82), (0.60 to 0.85) for those without back pain were obtained on the dynamic test for the right and left legs, respectively. Systematic bias was not observed between test and retest of subjects on both static and dynamic tests. The one-legged stance and star excursion balance tests have fair to excellent reliabilities on measures of postural control in adolescent athletes with and without back pain. They can be used as measures of postural control in adolescent athletes with and without back pain.
KW  - Excursion Balance Test
KW  - Female Collegiate Soccer
KW  - Test-Retest Reliability
KW  - Lower-Extremity Injury
KW  - Lumbar Spine
KW  - Performance
KW  - Basketball
KW  - Children
KW  - Prevalence
KW  - Stability
Y1  - 2018
U6  - https://doi.org/10.1155/2018/8438350
SN  - 2090-2875
SN  - 2090-2867
VL  - 2018
SP  - 1
EP  - 8
PB  - Hindawi
CY  - New York
ER  - 
TY  - JOUR
A1  - Verch, Ronald
A1  - Hirschmüller, Anja
A1  - Müller, Juliane
A1  - Baur, Heiner
A1  - Mayer, Frank
A1  - Müller, Steffen
T1  - Is in-toing gait physiological in children?
BT  - Results of a large cohort study in 5910 healthy (pre-) school children
JF  - Gait & posture
N2  - Research question: This study aimed to establish reference values in 1-14 year old healthy children and to implement FPA-percentile curves for daily clinical use. Methods: 5910 healthy children performed at least 3 repetitions of barefoot walking over an instrumented walkway using a pressure measurement platform. The FPA [degrees] was extracted and analyzed by age and gender (mean +/- standard deviation; median with percentiles, MANOVA (age, gender) and Wilcoxon-Signed-Rank test for intra-individual side differences (alpha = 0.05). Results: FPA maximum was observed in 2-year-old children and diminished significant until the age of 4 to moderate out-toeing. For ages 5-14, no statistically significant differences in FPA values were present (p > 0.05). MANOVA confirmed age (p < 0.001) and gender (p < 0.001) as significant FPA influencing factors, without combined effect (p > 0.05). In every age group, right feet showed significantly greater out-toeing (p < 0.05). Significance: Percentile values indicate a wide FPA range in children. FPA development in young children shows a spontaneous shift towards moderate external rotation (age 2-4), whereby in-toeing <= 1-5 degrees can be present, but can return to normal. Bilateral in-toeing after the age of four and unilateral in-toeing after the age of seven should be monitored.
KW  - Foot progression angle
KW  - Children
KW  - In-toeing
KW  - Out-toeing
KW  - Gait
Y1  - 2018
U6  - https://doi.org/10.1016/j.gaitpost.2018.08.019
SN  - 0966-6362
SN  - 1879-2219
VL  - 66
SP  - 70
EP  - 75
PB  - Elsevier
CY  - Clare
ER  -