Wouda M F, Wejden L, Lundgaard E, Strøm V
Department of Research, Sunnaas Rehabilitation Hospital, Oslo, Norway.
Erasmus Medical Centre, Rotterdam, The Netherlands.
Spinal Cord. 2016 Jan;54(1):51-6. doi: 10.1038/sc.2015.120. Epub 2015 Jul 28.
Randomized controlled trail.
To investigate if people with incomplete spinal cord injury (SCI) can perform high-intensity weight-bearing exercise by comparing cardiovascular responses at maximal workloads during stationary cycling and treadmill walking, and to explore mechanical efficiencies at sub-maximal workloads.
Sunnaas Rehabilitation Hospital, Nesoddtangen, Norway.
Fifteen people with incomplete SCI and 15 healthy control subjects performed sub-maximal and maximal exercise tests of both stationary cycling and uphill treadmill walking on separate days. Oxygen uptake (VO(2); l min(-1) and ml kg(-1) min(-1)), carbon dioxide production (VCO(2); l min(-1)), respiratory exchange ratio (RER) and heart rate (HR) were continuously measured throughout the tests.
The SCI group showed no significant differences in peak VO(2) (2.42±0.68 l min(-1) versus 2.58±0.76 l min(-1), P=0.19) or other cardiovascular responses at maximal workloads for stationary cycling as compared with uphill treadmill walking, except for higher RER during the cycle test. The control subjects exhibited a significantly higher peak VO(2) during the treadmill test as compared with the cycle test (P=0.007). Both groups had lower mechanical efficiency when walking as compared with cycling, but the mean difference between cycling and walking was not significantly different between the groups during sub-maximal workloads (P >0.24).
Subjects with incomplete SCI were able to perform high-intensity weight-bearing exercise and exhibited similar mechanical efficiencies at sub-maximal workloads as healthy controls. Uphill walking might be a good alternative to weight-bearing exercise for increasing the physical capacity of people with incomplete SCI.
随机对照试验。
通过比较固定自行车运动和跑步机上坡行走时最大负荷下的心血管反应，研究不完全性脊髓损伤（SCI）患者是否能够进行高强度负重运动，并探索次最大负荷下的机械效率。
挪威内索登滕的松纳斯康复医院。
15名不完全性SCI患者和15名健康对照者在不同日期分别进行了固定自行车运动和跑步机上坡行走的次最大负荷和最大负荷运动测试。在整个测试过程中持续测量摄氧量（VO₂；升/分钟和毫升/千克·分钟）、二氧化碳产生量（VCO₂；升/分钟）、呼吸交换率（RER）和心率（HR）。
与跑步机上坡行走相比，SCI组在固定自行车运动最大负荷时的峰值VO₂（2.42±0.68升/分钟对2.58±0.76升/分钟，P = 0.19）或其他心血管反应无显著差异，但在自行车测试期间RER较高。与自行车测试相比，对照组在跑步机测试期间的峰值VO₂显著更高（P = 0.007）。与骑自行车相比，两组步行时的机械效率均较低，但在次最大负荷期间，两组之间骑自行车和步行的平均差异无显著差异（P>0.24）。
不完全性SCI患者能够进行高强度负重运动，并且在次最大负荷下表现出与健康对照者相似的机械效率。上坡行走可能是增加不完全性SCI患者体能的负重运动的良好替代方式。
