TY  - JOUR
PY  - 2020//
TI  - Leg dominance effects on postural control when performing challenging balance exercises
JO  - Brain sciences
A1  - Promsri, Arunee
A1  - Haid, Thomas
A1  - Werner, Inge
A1  - Federolf, Peter
SP  - e128
EP  - e128
VL  - 10
IS  - 3
N2  - Leg dominance reflects the preferential use of one leg over another and is typically attributed to asymmetries in the neural circuitry. Detecting leg dominance effects on motor behavior, particularly during balancing exercises, has proven difficult. The current study applied a principal component analysis (PCA) on kinematic data, to assess bilateral asymmetry on the coordinative structure (hypothesis H1) or on the control characteristics of specific movement components (hypothesis H2). Marker-based motion tracking was performed on 26 healthy adults (aged 25.3 ± 4.1 years), who stood unipedally on a multiaxial unstable board, in a randomized order, on their dominant and non-dominant leg. Leg dominance was defined as the kicking leg. PCA was performed to determine patterns of correlated segment movements ("principal movements" PM<sub>k</sub>s). The control of each PM<sub>k</sub> was characterized by assessing its acceleration (second-time derivative). <br><br>RESULTS were inconclusive regarding a leg-dominance effect on the coordinative structure of balancing movements (H1 inconclusive); however, different control (<i>p</i> = 0.005) was observed in PM<sub>3</sub>, representing a diagonal plane movement component (H2 was supported). These findings supported that leg dominance effects should be considered when assessing or training lower-limb neuromuscular control and suggest that specific attention should be given to diagonal plane movements.<p />  <p>Language: en</p>
LA  - en
SN  - 2076-3425
UR  - http://dx.doi.org/10.3390/brainsci10030128
ID  - ref1
ER  -