Department of Biology, Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia.
TMG-BMC Ltd., Štihova ulica 24, 1000 Ljubljana, Slovenia.
Sensors (Basel). 2019 May 7;19(9):2108. doi: 10.3390/s19092108.
A piezo-resistive muscle contraction (MC) sensor was used to assess the contractile properties of seven human skeletal muscles (vastus medialis, rectus femoris, vastus lateralis, gastrocnemius medialis, biceps femoris, erector spinae) during electrically stimulated isometric contraction. The sensor was affixed to the skin directly above the muscle centre. The length of the adjustable sensor tip (3, 4.5 and 6 mm) determined the depth of the tip in the tissue and thus the initial pressure on the skin, fatty and muscle tissue. The depth of the tip increased the signal amplitude and slightly sped up the time course of the signal by shortening the delay time. The MC sensor readings were compared to tensiomyographic (TMG) measurements. The signals obtained by MC only partially matched the TMG measurements, largely due to the faster response time of the MC sensor.
采用压阻式肌肉收缩（MC）传感器评估 7 个人体骨骼肌（股直肌、股外侧肌、股内侧肌、腓肠肌、半腱肌、竖脊肌）在电刺激等长收缩时的收缩性能。传感器直接贴附在肌肉中心上方的皮肤。可调节传感器尖端的长度（3、4.5 和 6 毫米）决定了尖端在组织中的深度，从而决定了对皮肤、脂肪和肌肉组织的初始压力。尖端的深度增加了信号幅度，并通过缩短延迟时间略微加快了信号的时程。MC 传感器读数与张力测量法（TMG）进行了比较。MC 获得的信号仅部分与 TMG 测量结果匹配，这主要是由于 MC 传感器的响应时间更快。
