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为了研究耐力训练对人骨骼肌不同纤维类型超微结构成分的影响,作者观察了10名非运动员(男女各5人,22—36岁),自行车测功计的训练结果。训练方案:每周5次,每次30分钟,共6周(其中,男,女训练24周),训练强度因人而宜,保持在72±7%Vo_2max.全部对象训练前均未参加过正规运动训练。取材:训练前及训练6周后(2人为训练6周和24周后)由专人在股外侧肌同一部位针吸活捡取材,用组织化学和电镜进行综合分析,取至少含500根肌纤维的切片,在电镜下将其分为Ⅰ型、Ⅱa型、Ⅱb型、Ⅱc型(大多数切片Ⅱc型纤维罕见,不便
In order to study the effect of endurance training on the ultrastructural composition of different fiber types in human skeletal muscle, the authors observed the training results of 10 non-athletes (5 men and women, 22-36 years old) and bicycle ergometer. Training program: 5 times a week for 30 minutes each for a total of 6 weeks (including, male and female training for 24 weeks), training intensity due to the person and maintained at 72 ± 7% Vo_2max. All subjects before training did not participate in Formal exercise training. Materials: Before training and after training for 6 weeks (2 people for 6 weeks and 24 weeks after training), we picked up the needle by needle aspiration in the same part of the lateral femoral muscle and analyzed by histochemistry and electron microscope. At least 500 muscle fibers Sliced and classified into type I, type IIa, type IIb and type IIc by electron microscopy (most of the type IIc fibers are rare and inconvenient