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首页> 外文期刊>Journal of athletic training >Transcranial magnetic stimulation and volitional quadriceps activation.
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Transcranial magnetic stimulation and volitional quadriceps activation.

机译：经颅磁刺激和激活激活。

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CONTEXT: Quadriceps-activation deficits have been reported after meniscectomy. Transcranial magnetic stimulation (TMS) in conjunction with maximal contractions affects quadriceps activation in patients after meniscectomy. OBJECTIVE: To determine the effect of single-pulsed TMS on quadriceps central activation ratio (CAR) in patients after meniscectomy. DESIGN: Randomized controlled clinical trial. SETTING: University laboratory. PATIENTS OR OTHER PARTICIPANTS: Twenty participants who had partial meniscectomy and who had a CAR less than 85% were assigned randomly to the TMS group (7 men, 4 women; age = 38.1 +/- 16.2 years, height = 176.8 +/- 11.5 cm, mass = 91.8 +/- 27.5 kg, postoperative time = 36.7 +/- 34.9 weeks) or the control group (7 men, 2 women; age = 38.2 +/- 17.5 years, height = 176.5 +/- 7.9 cm, mass = 86.2 +/- 15.3 kg, postoperative time = 36.6 +/- 37.4 weeks). INTERVENTION(S): Participants in the experimental group received TMS over the motor cortex that was contralateral to the involved leg and performed 3 maximal quadriceps contractions with the involved leg. The control group performed 3 maximal quadriceps contractions without the TMS. MAIN OUTCOME MEASURE(S): Quadriceps activation was assessed using the CAR, which was measured in 70 degrees of knee flexion at baseline and at 0, 10, 30, and 60 minutes posttest. The CAR was expressed as a percentage of full activation. RESULTS: Differences in CAR were detected over time (F(4,72) = 3.025, P = .02). No interaction (F(4,72) = 1.457, P = .22) or between-groups differences (F(1,18) = 0.096, P = .76) were found for CAR. Moderate CAR effect sizes were found at 10 (Cohen d = 0.54, 95% confidence interval [CI] = -0.33, 1.37) and 60 (Cohen d = 0.50, 95% CI = -0.37, 1.33) minutes in the TMS group compared with CAR at baseline. Strong effect sizes were found for CAR at 10 (Cohen d = 0.82, 95% CI = -0.13, 1.7) and 60 (Cohen d = 1.06, 95% CI = 0.08, 1.95) minutes in the TMS group when comparing percentage change scores between groups. CONCLUSIONS: No differences in CAR were found between groups at selected points within a 60-minute time frame, yet moderate to strong effect sizes for CAR were found at 10 and 60 minutes in the TMS group, indicating increased activation after TMS.
机译：背景信息：半月形切除后报告了Quadriceps-激活缺陷。经颅磁刺激（TMS）与最大收缩结合影响乳白切除后患者的QuadRiceps活化。目的：确定单脉冲TMS对乳白切除术后患者Quadriceps中央激活比（CAR）的影响。设计：随机对照临床试验。环境：大学实验室。患者或其他参与者：随机向TMS集团随机分配有部分吊坠术和谁，持续超过85％的汽车的参与者（7名男子，4名女性;年龄= 38.1 +/- 16.2年，身高= 176.8 +/- 11.5 cm，mass = 91.8 +/- 27.5 kg，术后时间= 36.7 +/- 34.9周）或对照组（7名男子，2名女性;年龄= 38.2 +/- 17.5岁，身高= 176.5 +/- 7.9厘米，质量= 86.2 +/- 15.3千克，术后时间= 36.6 +/- 37.4周）。干预：实验组的参与者接受了对对侧对侧的电机皮层的TMS，并与所涉及的腿进行3个最大Quadriceps收缩。对照组在没有TMS的情况下执行3个最大Quaddriceps收缩。主要结果测量：使用该汽车评估QuadRiceps激活，该轿厢在基线的70度膝关节和0,10,30和60分钟内测量。该车表示为完全激活的百分比。结果：随着时间的推移检测到汽车的差异（f（4,72）= 3.025，p = .02）。没有发现互动（F（4,72）= 1.457，p = .22）或组之间的差异（f（1,18）= 0.096，p = .76）。在TMS组中，在10（COHEN D = 0.54,95％置信区间[CI] = -10.33,1.37）和60（CIHEN D = 0.50,95％CI = -0.37,10分钟）中找到了适度的汽车效果尺寸用汽车在基线。在比较TMS组时，在10（COHEN D = 0.82,95％CI = -0.13,1.7）和60（COHEN D = 1.06,95％CI = 0.08,10.6）分钟内，速度的速度强团体之间。结论：在60分钟的时间框架内，在选定点的组之间发现了在选定点之间的差异，但在TMS组中，在10分钟内发现了适度的汽车的强劲效果大小，表明TMS后的激活增加。

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