在患有唐氏综合征的个体中,对异比膝盖延伸和运动后缺血的压力应答
Sara R Sherman1, Ronald Jackson1, Natalia S Lima1
1Integrative Physiology Laboratory, Department of Kinesiology and Nutrition, University of Illinois Chicago, Chicago, IL.
Medicine and science in sports and exercise
|December 3, 2024
概括
唐氏综合征 (DS) 患者在运动时表现出较弱的代谢反射反应,导致运动能力降低. 这项研究强调了DS患者的自主功能障碍,影响了他们在体力活动期间提高血压的能力.
科学领域:
- 运动生理学 运动生理学
- 自主神经科学 自主神经科学
- 人体生理学 人体生理学
背景情况:
- 唐氏综合征 (DS) 患者经历自主功能障碍,导致工作能力下降.
- 代谢反射,运动诱导的同情激发的关键驱动器,在DS中并不清楚.
- 麻木的交感刺激在DS中很普遍,可能解释了运动能力的降低.
研究的目的:
- 在运动后肌肉缺血 (PEMI) 期间调查DS患者的代谢反射反应.
- 为了比较患有DS的人与没有DS的人的代谢反射反应.
- 为了确定是否降低了代谢反射有助于减少运动压力响应在DS.
主要方法:
- 24名DS患者和24名没有DS的患者进行了单侧异面对称膝盖延伸.
- 运动后肌肉缺血 (PEMI) 是通过大腿袖口膨胀诱导的,以隔离代谢反射.
- 连续监测了心跳对心跳的平均动脉压 (MAP),缩血压 (SBP) 和心率 (HR).
主要成果:
- 与对照人群相比,DS患者在异面膝盖延伸过程中表现出压力反应 (MAP) 的减弱.
- 这种模糊的MAP反应在DS组的PEMI期间持续存在.
- 患有DS的个体在炼任务期间表现出心率反应降低.
结论:
- 与非DS同龄人相比,患有DS的个人表现出降低了代谢反射反应.
- 降低的代谢反射影响可能有助于在DS中观察到的减弱的运动压力反应.
- 这些DS的外围自主性变化可能会加剧工作能力的减少,超出之前所指出的心脏自主性发现.
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