Biomechanical analysis of walking through a hallway under flooded conditions.
Biomechanical analysis of walking through a hallway under flooded conditions.
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在洪水条件下穿过走廊的生物力学分析。
DOI：
10.2114/jpa2.28.23
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发表时间：
2009
影响因子：
3.1
通讯作者：
K. Horii
中科院分区：
文献类型：
--
作者：
K. Kotani;Yuji Hirato;T. Ishigaki;H. Shimada;K. Toda;K. Horii
本研究的目的是测量步行过程中的肌肉活动，以估计在流速影响发生变化时安全疏散必须行进的距离。本研究测量了右下肢股直肌、股外侧肌、股二头肌长头肌、腓肠肌内侧肌、胫前肌和臀中肌6块肌肉的肌电图数据。实验条件包括行走在一个0.5 m高的洪水走廊中，并以4种不同的流速（与行走方向相反的0、0.47、0.76和1.12 m/s）行走在干燥的地面上。从结果来看，当水流速度最高时，当脚趾离地时，胫骨前肌的肌肉活动最高，高达85% MVC，这表明受试者在踝关节背屈时倾向于避免因水流而绊倒。臀中肌的活动随着流速的增加而增加，提示受试者试图稳定骨盆区域以避免摔倒。在洪水条件下步行时肌肉活动与水高和流速的关系的经验数据将有助于更好地理解从被洪水淹没的城市地下区域的安全疏散。
The objective of this study is to measure muscle activity during walking in order to estimate the distance that must be traveled for safe evacuation when the effect of the flow velocity changes. In the present study, electromyogram data were measured for six muscles on the right lower extremity, namely, the rectus femoris, vastus lateralis, long head of the biceps femoris, medial gastrocnemius, tibialis anterior, and gluteus medius. The experimental conditions included walking through a flooded hallway with 0.5-m-high water flowing at four different flow velocities (0, 0.47, 0.76, and 1.12 m/s in the direction opposite to the walking direction) and walking on dry ground. From the results, the tibialis anterior exhibited the highest muscle activity of up to 85% MVC with the toe off the ground when the flow velocity was the highest, suggesting that the subject tended to avoid stumbling against water flow during ankle dorsiflexion. The activity of the gluteus medius increased with the flow velocity, suggesting that the subject tried to stabilize the pelvic area to avoid falling. Empirical data for muscle activity during walking under flooded conditions in association with water height and flow velocity will contribute to better understanding safe evacuation from flooded urban underground areas.
影响因子：
2.4
作者：
Miyoshi, Tasuku;Nakazawa, Kimitaka;Akai, Masami
通讯作者：
Akai, Masami
水中行走时肌肉活动、步频和心率反应与年龄相关的差异
DOI：
--
发表时间：
2007
期刊：
Journal of Electromyography and Kinesiology (in press)
影响因子：
--
作者：
Masumoto;K.;T.Shono;S.Takasugi;N.Hotta;K.Fujishima;Y.Iwamoto
通讯作者：
Y.Iwamoto