Alghanim Sara, Alablani Maha F, Alqutami Ali, Alotaibi Rawan T, Jung Hyun Chul, Stoner Lee, Alansare Abdullah B
Department of Exercise Physiology, College of Sport Sciences and Physical Activity, King Saud University, 80200 Riyadh, Saudi Arabia.
Department of Sports Coaching, College of Physical Education, Kyung Hee University-Global Campus, 17014 Yongin-si, Republic of Korea.
Rev Cardiovasc Med. 2024 Apr 8;25(4):139. doi: 10.31083/j.rcm2504139. eCollection 2024 Apr.
Estimated pulse wave velocity (ePWV) is mathematically calculated from age and mean arterial pressure (MAP). We examined the effects of high-intensity interval training (HIIT) vs. moderate-intensity continuous training (MICT) on ePWV and MAP in insufficiently active overweight adults.
Using the randomized controlled trial design, thirteen males (27.46 3.80 years old; body mass index (BMI) = 29.61 5.52) randomly completed either two-week HIIT (n = 7) or MICT (n = 6). HIIT consisted of 8 sessions of cycling, 20 min/session with an exercise-to-rest ratio of 10/50 s at 90% peak heart rate ( ). MICT consisted of 8 cycling sessions, 40 min/session at 60-75% . Oscillometric brachial MAP was measured pre- and post-intervention, and ePWV was calculated. Two-way repeated measure analysis of variance examined the effects of time, intervention, and their interactions on ePWV and MAP.
Significant time effects were observed for ePWV and MAP, where both measures comparably decreased over time in HIIT and MICT groups ( 0.05 for all). However, no significant intervention or interaction effects were detected, indicating no superiority of either exercise modality for ePWV or MAP improvements.
This study uniquely revealed that two weeks of HIIT or MICT resulted in significant, comparable, and clinically meaningful decreases in ePWV and MAP among insufficiently active overweight adults. As such, overweight adults who have time as a constraint to engage in traditional exercise (i.e., MICT) can accomplish comparable vascular benefits by performing HIIT.
估计脉搏波速度（ePWV）是根据年龄和平均动脉压（MAP）通过数学计算得出的。我们研究了高强度间歇训练（HIIT）与中等强度持续训练（MICT）对运动不足的超重成年人的ePWV和MAP的影响。
采用随机对照试验设计，13名男性（27.46±3.80岁；体重指数（BMI）=29.61±5.52）随机完成为期两周的HIIT（n = 7）或MICT（n = 6）。HIIT包括8次骑行训练，每次20分钟，运动与休息比例为10/50秒，强度为心率峰值的90%。MICT包括8次骑行训练，每次40分钟，强度为心率峰值的60 - 75%。在干预前后测量示波肱动脉MAP，并计算ePWV。采用双向重复测量方差分析来检验时间、干预及其交互作用对ePWV和MAP的影响。
观察到ePWV和MAP有显著的时间效应，在HIIT组和MICT组中，这两项指标均随时间有相当程度的下降（所有P < 0.05）。然而，未检测到显著的干预或交互作用效应，表明两种运动方式在改善ePWV或MAP方面均无优势。
本研究独特地揭示，为期两周的HIIT或MICT会使运动不足的超重成年人的ePWV和MAP显著、相当且具有临床意义地降低。因此，受时间限制而无法进行传统运动（即MICT）的超重成年人，通过进行HIIT可以获得相当的血管益处。
