Dept. of Circulation and Biomedical Imaging, Norwegian University of Science and Technology, Faculty of Medicine, Trondheim, Norway.
Am J Phys Med Rehabil. 2011 May;90(5):407-14. doi: 10.1097/PHM.0b013e31820f960f.
The aim of this study was to determine the effect of high-intensity interval training during combined arm cycling exercise (ACE) and functional electrical stimulation leg cycling (hybrid exercise), on peak stroke volume and peak oxygen consumption in individuals with spinal cord injury (SCI).
A baseline control trial at an outpatient SCI clinic (St. Olav's University Hospital, Norway) was conducted. Participants included six men with SCI in stable neurologic recovery (ASIA Impairment Scale grade A). The study intervention included aerobic high-intensity hybrid exercise training three times a week for 8 wks preceded by a 7-wk control period of regular daily activity. Main outcome measures were peak stroke volume during hybrid cycling and peak oxygen consumption during hybrid cycling, ACE, and functional electrical stimulation leg cycling. The tests were conducted at three time points: 1, baseline; 2, control; and 3, post-training.
Data are presented as mean (SD). From control to post-training tests, a significant increase in peak stroke volume by 33% (P = 0.004), from 77.7 (9.9) to 103.4 (17.1) ml/beat, was found. Furthermore, between control and post-training tests, hybrid peak oxygen consumption increased by 24.4%, from 24.6 (3.9) to 30.6 (5.2) ml kg (-1) min (-1) (P = 0.003), and peak oxygen consumption during isolated ACE and functional electrical stimulation cycling increased by 25.9% (P = 0.001) and 23.5% (P = 0.007), respectively.
Training aerobic high-intensity hybrid intervals at 85%-95% of peak Watt was feasible for this group of SCI men and significantly increased peak stroke volume and peak oxygen uptake. Because aerobic capacity is directly linked to mortality and morbidity, the present study may be useful for designing training programs sufficient to reverse the risk of cardiovascular disease in SCI.
本研究旨在确定高强度间歇训练（ACE 期间的组合臂循环运动和功能性电刺激腿部循环运动（混合运动）对脊髓损伤（SCI）个体的峰值心排量和峰值耗氧量的影响。
在挪威圣奥拉夫大学医院的门诊 SCI 诊所进行了基线对照试验。参与者包括 6 名处于稳定神经恢复阶段的 SCI 男性（ASIA 损伤量表 A 级）。研究干预包括每周 3 次进行有氧高强度混合运动训练，持续 8 周，之前是为期 7 周的日常活动对照期。主要结局指标为混合循环时的峰值心排量和混合循环、ACE 和功能性电刺激腿部循环时的峰值耗氧量。这些测试在三个时间点进行：1. 基线；2. 对照；3. 训练后。
数据以平均值（标准差）表示。从对照测试到训练后测试，发现峰值心排量增加了 33%（P = 0.004），从 77.7（9.9）增加到 103.4（17.1）ml/beat。此外，与对照测试相比，混合峰值耗氧量增加了 24.4%，从 24.6（3.9）增加到 30.6（5.2）ml·kg(-1)·min(-1)（P = 0.003），而 ACE 和功能性电刺激单独循环时的峰值耗氧量分别增加了 25.9%（P = 0.001）和 23.5%（P = 0.007）。
对于这群 SCI 男性，以 85%-95%峰值瓦特进行有氧高强度混合间歇训练是可行的，并且显著增加了峰值心排量和峰值耗氧量。由于有氧能力与死亡率和发病率直接相关，因此本研究可能有助于设计足以逆转 SCI 患者心血管疾病风险的训练计划。
