出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：1) Twelve healthy students were trained in isometric contractions (67 percent of maximal leg extension strength until exhaustion) once a day for seven weeks, and 18 days after this isometric training period same subjects were trained in isotonic contractions (for a week all subjects used load of 26 kg, and then for three weeks used 32 kg). In the isometric training period leg extension strength was increased 4 percent for a week, but in isotoric training period, it was increased 24 persent for a week. And dynamic endurance was cleary increased too, but effects was found on the ability of vertical jump. 2) Six healthy students participated in a eight-week repeated vertical jump training. The excellent half of all could not be find any effect, but in another lower half some effects were observed. 3) Three adult male subjects were trained in isometric contraction of the elbow flex at the point of degree of 100 until exhaustion. The training task of holding was a resistance of ultra maximal load that will able to raise over head by jumping press, but can't by normal press) for the elbow flexors on l000゜ flexions as long as possible. 0nly once training per 2 weeks, it was clearly affected on these ability, and then holding time was prolonged about 3.8 times (from 2.5 sec, to 9.5 sec) after 11 weeks training.
其他摘要：1) Twelve healthy students were trained in isometric contractions (67 percent of maximal leg extension strength until exhaustion) once a day for seven weeks, and 18 days after this isometric training period same subjects were trained in isotonic contractions (for a week all subjects used load of 26 kg, and then for three weeks used 32 kg). In the isometric training period leg extension strength was increased 4 percent for a week, but in isotoric training period, it was increased 24 persent for a week. And dynamic endurance was cleary increased too, but effects was found on the ability of vertical jump. 2) Six healthy students participated in a eight-week repeated vertical jump training. The excellent half of all could not be find any effect, but in another lower half some effects were observed. 3) Three adult male subjects were trained in isometric contraction of the elbow flex at the point of degree of 100 until exhaustion. The training task of holding was a resistance of ultra maximal load that will able to raise over head by jumping press, but can't by normal press) for the elbow flexors on l000゜ flexions as long as possible. 0nly once training per 2 weeks, it was clearly affected on these ability, and then holding time was prolonged about 3.8 times (from 2.5 sec, to 9.5 sec) after 11 weeks training.
