使用改良的 Hill-Huxley 模型，通过动态优化刺激频率来减少等长肌肉疲劳。
Dynamic optimization of stimulation frequency to reduce isometric muscle fatigue using a modified Hill-Huxley model.
机构信息
Bechtel Marine Propulsion Corporation, Pittsburgh, Pennsylvania, USA.
Iam Robotics, Pittsburgh, Pennsylvania, USA.
出版信息
Muscle Nerve. 2018 Apr;57(4):634-641. doi: 10.1002/mus.25777. Epub 2017 Sep 18.
INTRODUCTION
Optimal frequency modulation during functional electrical stimulation (FES) may minimize or delay the onset of FES-induced muscle fatigue.
METHODS
An offline dynamic optimization method, constrained to a modified Hill-Huxley model, was used to determine the minimum number of pulses that would maintain a constant desired isometric contraction force.
RESULTS
Six able-bodied participants were recruited for the experiments, and their quadriceps muscles were stimulated while they sat on a leg extension machine. The force-time (F-T) integrals and peak forces after the pulse train was delivered were found to be statistically significantly greater than the force-time integrals and peak forces obtained after a constant frequency train was delivered.
DISCUSSION
Experimental results indicated that the optimized pulse trains induced lower levels of muscle fatigue compared with constant frequency pulse trains. This could have a potential advantage over current FES methods that often choose a constant frequency stimulation train. Muscle Nerve 57: 634-641, 2018.
简介
在功能性电刺激（FES）过程中进行最佳频率调制，可能会最小化或延迟 FES 引起的肌肉疲劳的发生。
方法
采用离线动态优化方法，约束于修正的 Hill-Huxley 模型，确定保持恒定等长收缩力所需的最小脉冲数。
结果
招募了 6 名健康参与者进行实验，让他们坐在腿伸展机上，刺激股四头肌。发现脉冲串输送后的力-时间（F-T）积分和峰值力明显大于输送恒定频率脉冲串后的力-时间积分和峰值力。
讨论
实验结果表明，与恒定频率脉冲串相比，优化后的脉冲串引起的肌肉疲劳程度更低。这可能优于当前经常选择恒定频率刺激脉冲串的 FES 方法。肌肉神经 57：634-641，2018。
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