Electromyographic activity of quadriceps muscle during sit-to-stand in patients with unilateral knee osteoarthritis.
Electromyographic activity of quadriceps muscle during sit-to-stand in patients with unilateral knee osteoarthritis.
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DOI：
10.1186/s13104-018-3464-9
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发表时间：
2018-06-05
影响因子：
1.8
通讯作者：
Olson SL
中科院分区：
文献类型：
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作者：
Al Amer HS;Sabbahi MA;Alrowayeh HN;Bryan WJ;Olson SL
坐站站 (STS) 是一项评估膝骨关节炎 (OA) 患者股四头肌功能表现的简单测试。目的是评估严重单侧 OA 患者在不同座椅高度和脚位置的 STS 任务期间同侧股四头肌的肌电图 (EMG) 活动。在执行 STS 任务期间，在四种情况下记录了 8 名单侧 OA 参与者的肌电图活动：(1) 双脚并拢的及膝高度座椅，(2) 双脚歪斜的及膝高度座椅（双脚并排，脚跟到脚趾），(3) 双脚并拢的低高度座椅（比及膝高度座椅低 25%），以及 (4) 双脚歪斜的低高度座椅。四种条件下肌电图活动存在统计学显着性差异（p =0.004）。特别是，当参与者从低高度站起并双脚歪斜时，股四头肌的肌电图活动显着高于当参与者从膝盖高度站起并双脚并拢（p =0.004）或歪斜（p =0.002）时。这些结果建议在使用 STS 测试评估单侧 OA 患者股四头肌的功能活动时考虑初始足部位置和座椅高度。
The sit-to-stand (STS) is a simple test to evaluate the functional performance of the quadriceps muscle in patients with knee osteoarthritis (OA). The aim was to evaluate the electromyographic (EMG) activity of the ipsilateral quadriceps during STS task at different seat heights and feet positions in patients with severe unilateral OA. The EMG activity was recorded in a group of eight participants with unilateral OA during the performance of STS task in four conditions: (1) knee-height seat with feet together, (2) knee-height seat with feet askew (feet side by side and heel-to-toe), (3) low-height seat (25% lower than knee-height seat) with feet together, and (4) low-height seat with feet askew. There was a statistically significant difference among the four conditions in the EMG activity (p =0.004). Particularly, the EMG activity of the quadriceps was significantly higher when participants rose from the low height with their feet askew than when they rose from the knee height with their feet placed together (p =0.004) or askew (p =0.002). These results recommend considering initial feet position and seat height when evaluating the functional activity of the quadriceps in patients with unilateral OA using STS test.