The Effect of Exercise-Induced Central Fatigue on Cervical Spine Joint Position Error, Strength, and Endurance.

IF 1.6 Q3 SPORT SCIENCES
International Journal of Sports Physical Therapy Pub Date : 2024-03-02 eCollection Date: 2024-01-01 DOI:10.26603/001c.92703
Antonio Vintimilla, Troy Hooper, C Roger James, Ho Cheng Lu, Karthick Natesan, Jeegisha Kapila, Phil Sizer
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Abstract

Background: Fatigue is common in sports, impairing performance and increasing injury risk, yet little is known regarding fatigue and concussion. Impaired neck neuromuscular function may contribute to concussion at baseline, where central fatigue may further impair neck function resulting in increased concussion risk. These effects may be magnified in athletes with a history of concussion.

Purpose: To determine the effect of exercise induced central fatigue on neck joint position error, strength, and endurance in healthy subjects and those with a history of concussion. The investigators hypothesized that EICF would have a negative effect on all variables.

Study design: Healthy subjects were examined using a single factor, within-subjects repeated measures design. Concussion history subjects were examined using a single-subject design.

Methods: Nineteen healthy subjects and five subjects with a history of concussion were recruited for the study. Cervical joint position error, muscle strength, and neck flexor endurance were tested before and after exercise induced fatigue.

Results: There was a significant increase in constant (p = 0.0027) and absolute joint position error (JPE) (p < 0.001); decrease in neck flexor endurance (p < 0.001); and decrease neck strength into cervical flexion (p = 0.01) in healthy subjects following fatigue. Among concussion history subjects, five demonstrated a significant increase in absolute and constant JPE (p < 0.05); four demonstrated a significant decrease in neck flexor endurance (p < 0.05); one in neck flexion muscle strength (p < 0.05); and three in neck extension and rotation muscle strength (p < 0.05) following fatigue.

Conclusions: Cervical neuromuscular function deteriorated following fatigue in healthy subjects. Resulting impairments may affect force alterations in cervical control, potentially increasing concussion risk. Concussion history subjects descriptively demonstrated similar results, however further research should examine formal comparisons involving subjects with and without concussion history.

Level of evidence: 3b.

运动引起的中枢疲劳对颈椎关节位置误差、力量和耐力的影响
背景:疲劳在运动中很常见,会影响运动表现并增加受伤风险,但人们对疲劳和脑震荡却知之甚少。颈部神经肌肉功能受损可能会导致基线脑震荡,而中枢疲劳可能会进一步损害颈部功能,从而增加脑震荡风险。目的:确定运动诱发中枢疲劳对健康受试者和有脑震荡病史者颈部关节位置误差、力量和耐力的影响。研究人员假设运动诱发中枢疲劳会对所有变量产生负面影响:研究设计:健康受试者采用单因素、受试者内重复测量设计进行研究。研究方法:19 名健康受试者和 5 名有脑震荡病史的受试者采用单受试者设计进行研究:研究招募了 19 名健康受试者和 5 名有脑震荡病史的受试者。在运动引起疲劳前后测试了颈椎关节位置误差、肌肉力量和颈屈肌耐力:结果:疲劳后,健康受试者的恒定关节位置误差(P = 0.0027)和绝对关节位置误差(JPE)明显增加(P < 0.001);颈部屈肌耐力下降(P < 0.001);颈部屈曲力量下降(P = 0.01)。在有脑震荡病史的受试者中,有五名受试者在疲劳后颈部绝对肌力和恒定肌力显著增加(p < 0.05);四名受试者在疲劳后颈部屈肌耐力显著下降(p < 0.05);一名受试者在疲劳后颈部屈肌力量显著下降(p < 0.05);三名受试者在疲劳后颈部伸展和旋转肌力量显著下降(p < 0.05):结论:健康受试者在疲劳后颈部神经肌肉功能下降。结论:疲劳后,健康受试者的颈部神经肌肉功能会下降,由此导致的损伤可能会影响颈部控制力的改变,从而增加脑震荡的风险。有脑震荡病史的受试者的描述性结果相似,但进一步的研究应该对有脑震荡病史和无脑震荡病史的受试者进行正式比较:3b.
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.50
自引率
5.90%
发文量
124
审稿时长
16 weeks
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