TY  - JOUR
PY  - 2015//
TI  - Effect of active arm swing to local dynamic stability during walking
JO  - Human movement science
A1  - Wu, Yu
A1  - Li, Yue
A1  - Liu, An-Min
A1  - Xiao, Fei
A1  - Wang, Yin-Zhi
A1  - Hu, Fei
A1  - Chen, Jin-Ling
A1  - Dai, Ke-Rong
A1  - Gu, Dong-Yun
SP  - 102
EP  - 109
VL  - 45
IS  - 
N2  - Arm swing is an essential component in regulating dynamic stability of the whole body during walking, while the contribution of active arm swing to local dynamic stability of different motion segments remains unclear. This study investigated the effects of arm swing under natural arm swing condition and active arm swing condition on local dynamic stability and gait variability of the trunk segments (C7 and T10 joint) and lower extremity joints (hip, knee and ankle joint). The local divergence exponents (λs) and mean standard deviation over strides (MeanSD) of 24 young healthy adults were calculated while they were walking on treadmill with two arm swing conditions at their preferred walking speed (PWS). We found that in medial-lateral direction, both λs and MeanSD values of the trunk segments (C7 and T10 joint) in active arm swing condition were significantly lower than those in natural arm swing condition (p<0.05), while no significant difference of λs or MeanSD in lower extremity joints (hip, knee and ankle joint) was found between two arm swing conditions (p>0.05, respectively). In anterior-posterior and vertical direction, neither λs nor MeanSD values of all body segments showed significant difference between two arm swing conditions (p>0.05, respectively). These findings indicate that active arm swing may help to improve the local dynamic stability of the trunk segments in medial-lateral direction.<p />  <p>Language: en</p>
LA  - en
SN  - 0167-9457
UR  - http://dx.doi.org/10.1016/j.humov.2015.10.005
ID  - ref1
ER  -