Purpose: In a sample of healthy adolescents, the authors aimed to investigate the effects of high-intensity interval exercise (HIIE) training and detraining on baroreflex sensitivity (BRS) and it’s vascular and autonomic components at rest. Methods: Nineteen volunteers were randomly allocated to (1) 4 weeks HIIE training performed 3 times per week or (2) a control condition with no intervention for the same duration as HIIE training. PRE, POST, and following 2 weeks of detraining resting supine heart rate and blood pressure were measured, and a cross-spectral method (integrated gain [gain in low frequency]) was used to determine BRS gain. Arterial compliance (AC) was assessed as the BRS vascular component. LFgain divided by AC (LFgain/AC) was used as the autonomic determinant of BRS. Results: The HIIE training was completed with 100% compliance. HIIE did not change resting gain in low frequency (LFgain) (P = .66; effect size = 0.21), AC (P = .44; effect size = 0.36), or LFgain/AC (P = .68; effect size = 0.19) compared to control. Conclusion: Four weeks of HIIE training does not change BRS and its autonomic and vascular determinant in a sample of healthy adolescents at rest.

目的：在一个健康青少年样本中，作者旨在调查高强度间歇运动 (HIIE) 训练和去训练对压力反射敏感性 (BRS) 及其在休息时的血管和自主神经成分的影响。方法： 19 名志愿者被随机分配到（1）每周 3 次的 4 周 HIIE 培训或（2）与 HIIE 培训持续时间相同的无干预控制条件。测量训练前、训练后和 2 周后的静息仰卧心率和血压，并使用交叉谱法（综合增益 [低频增益]）确定 BRS 增益。动脉顺应性 (AC) 被评估为 BRS 血管成分。LFgain 除以 AC (LFgain/AC) 被用作 BRS 的自主决定因素。结果： HIIE 培训以 100% 的依从性完成。HIIE 在低频 (LFgain) ( P  = .66; 影响大小 = 0.21)、AC ( P  = .44; 影响大小 = 0.36) 或 LFgain/AC ( P  = .68; 影响大小 = 0.19) 与对照相比。结论： 4 周的 HIIE 训练不会改变休息时健康青少年样本中的 BRS 及其自主神经和血管决定因素。