Hasnan Nazirah, Mohamad Saadon Nurul Salwani, Hamzaid Nur Azah, Teoh Mira Xiao-Hui, Ahmadi Sirous, Davis Glen M
Department of Rehabilitation Medicine, Faculty of Medicine.
Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia.
Medicine (Baltimore). 2018 Oct;97(43):e12922. doi: 10.1097/MD.0000000000012922.
This study compared muscle oxygenation (StO2) during arm cranking (ACE), functional electrical stimulation-evoked leg cycling (FES-LCE), and hybrid (ACE+FES-LCE) exercise in spinal cord injury individuals. Eight subjects with C7-T12 lesions performed exercises at 3 submaximal intensities. StO2 was measured during rest and exercise at 40%, 60%, and 80% of subjects' oxygen uptake (VO2) peak using near-infrared spectroscopy. StO2 of ACE showed a decrease whereas in ACE+FES-LCE, the arm muscles demonstrated increasing StO2 from rest in all of VO2) peak respectively. StO2 of FES-LCE displayed a decrease at 40% VO2 peak and steady increase for 60% and 80%, whereas ACE+FES-LCE revealed a steady increase from rest at all VO2 peak. ACE+FES-LCE elicited greater StO2 in both limbs which suggested that during this exercise, upper- and lower-limb muscles have higher blood flow and improved oxygenation compared to ACE or FES-LCE performed alone.
本研究比较了脊髓损伤个体在手臂曲柄运动（ACE）、功能性电刺激诱发的腿部自行车运动（FES-LCE）以及混合运动（ACE+FES-LCE）期间的肌肉氧合（StO2）情况。8名患有C7-T12损伤的受试者以3种次最大强度进行运动。在休息以及以受试者摄氧量（VO2）峰值的40%、60%和80%进行运动期间，使用近红外光谱法测量StO2。ACE的StO2呈现下降趋势，而在ACE+FES-LCE中，手臂肌肉在所有VO2峰值时的StO2均从休息时开始增加。FES-LCE的StO2在VO2峰值的40%时呈现下降，在60%和80%时稳步增加，而ACE+FES-LCE在所有VO2峰值时均从休息时开始稳步增加。ACE+FES-LCE在双下肢均引发了更高的StO2，这表明在此运动期间，与单独进行ACE或FES-LCE相比，上肢和下肢肌肉具有更高的血流量和更好的氧合。
