Characteristics of tetanic force produced by the sternomastoid muscle of the rat.
Characteristics of tetanic force produced by the sternomastoid muscle of the rat.
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DOI：
10.1155/2010/194984
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发表时间：
2010
影响因子：
--
通讯作者：
Mu L
中科院分区：
文献类型：
--
作者：
Sobotka S;Mu L
胸锁乳突肌（SM）在支持呼吸中起着重要作用。它还具有独特的解剖学优势，使其广泛用于头颈部组织重建和肌肉神经再支配。然而，很少有人知道它的收缩性能。实验在大鼠身上进行，旨在确定肌肉力量（电刺激的主动肌肉收缩）与被动张力（被动力改变肌肉长度）和电刺激的两个参数（强度和频率）之间的体内关系。启动明显肌肉收缩的阈值电流为0.03 mA。通过使用中等肌肉长度/张力（28 mm/0.08 N）、0.2 mA刺激电流和150 Hz刺激频率产生最大肌力（0.94 N）。这些数据是重要的，不仅要更好地了解大鼠SM肌肉的收缩特性，但也提供了规范的值，这是至关重要的可靠评估肌肉神经再支配后的功能恢复的程度。
The sternomastoid (SM) muscle plays an important role in supporting breathing. It also has unique anatomical advantages that allow its wide use in head and neck tissue reconstruction and muscle reinnervation. However, little is known about its contractile properties. The experiments were run on rats and designed to determine in vivo the relationship between muscle force (active muscle contraction to electrical stimulation) with passive tension (passive force changing muscle length) and two parameters (intensity and frequency) of electrical stimulation. The threshold current for initiating noticeable muscle contraction was 0.03 mA. Maximal muscle force (0.94 N) was produced by using moderate muscle length/tension (28 mm/0.08 N), 0.2 mA stimulation current, and 150 Hz stimulation frequency. These data are important not only to better understand the contractile properties of the rat SM muscle, but also to provide normative values which are critical to reliably assess the extent of functional recovery following muscle reinnervation.
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