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Training exclusively with isokinetic contractions type can result in greater muscular adaptations than training with isotonic contractions type. We aimed to determine whether training-induced increases in knee muscular strength differed between muscles performing isokinetic contractions type and isotonic contractions type when total external work is equivalent. The 16healthy young males(8 isotonic exercise group(ITG), 8 isokinetic exercise(IKG)) completed a 8-week isokinetic and isotonic training program of the knee muscle. The isotonic knee muscle were trained using the knee extension(seated), knee flexion(prone), hip abduction, hip adduction, terminal hip flexion, terminal hip extension and isotonic contraction with the resistance set at 50% of the previously recorded maximal voluntary isometric contraction. Isokinetic knee muscle trained using velocity spectrum(two sets of 4 repetitions at each speed:60°/S, 90°/S, two sets of 6 repetitions at each speed:120°/S 150°/S,two sets of 8 repetitions at each speed:180°/S). Both training groups trained using a exercise 3 days a week for 8 week. The change of muscle strength of leg flexion and extension were measured with a CYBEX NORMTM and to examine concentric maximal isokinetic strength 60°/S, 180°/S. For the data analysis of the study results, technical statistics was calculated using the SPSS 13.0 statistic program, and the two-way repeated analysis of variance(Two-way repeated ANOVA) was conducted. The result were as followings. The peak torque/BW between training stages in time of flexion, extension 60°/S, 180°/S(left,right) showed great significant difference(p<0.05) but between groups showed no significant difference. The total work between training stages in time of flexion, extension 60°/S, 180°/S(left, right) showed great significant difference(p<0.05) but between groups showed no significant difference. This study confirmed that isotonic training has been reported to be equal to or more effecitive than isokinetic training in which muscle contraction are similar to functional movement.

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참고문헌 (35건) : 자료제공( 네이버학술정보 )

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번호 참고문헌 국회도서관 소장유무
1 등장성, 등척성 및 등속성 근수축 훈련에 의한 대퇴근력의 변화에 관한 연구 네이버 미소장
2 A Study on the Effects of Initial Rehabilitative Exercise Program on Knee Joint`s Myofunction after the Reconstruction of Anterior Crucial Ligament 소장
3 The Load That Maximizes the Average Mechanical Power Output During Explosive Bench Press Throws in Highly Trained Athletes 네이버 미소장
4 Effects of velocity on upper to lower extremity muscular work and power output ratios of intercollegiate athletes. 네이버 미소장
5 (1995). A comparison of isokinetic and isotonic predictions of a functional task. J. Athl. Train., 30(4): 319-322. 미소장
6 Change in knee kinematics during gait after eccentric isokinetic training for quadriceps in subjects submitted to anterior cruciate ligament reconstruction 네이버 미소장
7 Developing explosive power: A comparison of technique and training 네이버 미소장
8 Training volume and strength and power development 네이버 미소장
9 (1985). Quantitative assessment of co-contraction at the ankle joint in walking. Electromyogr ClinNeutvphysiol, 25(1-3), 135-149. 미소장
10 The isokinetic concept of exercise. 네이버 미소장
11 (1980). Effects of isotonic training, isokinetic training and jumping practice on the vertical jump performance of college age women Brooking, SD: South Dacota State University; Thesis. 미소장
12 Isokinetic strength characteristics of the quadriceps femoris and hamstring muscles in high school students. 네이버 미소장
13 A comparison of various therapeutic exercises on the functional status of patients with knee osteoarthritis 네이버 미소장
14 Effect of muscle strengthening exercises on the muscle strength in patients with osteoarthritis of the knee 네이버 미소장
15 Eccentric muscle contractions: their contribution to injury, prevention, rehabilitation, and sport. 네이버 미소장
16 Does Cybex testing increase knee laxity after anterior cruciate ligament reconstructions? 네이버 미소장
17 (1983). A Comparison of the conditioning protocol on the muscular strength and endurance of sedentary college women Athletic Training, JNATA, 3, 240-242. 미소장
18 Dynamic joint forces during knee isokinetic exercise. 네이버 미소장
19 Isotonic preload versus isokinetic knee extension resistance training. 네이버 미소장
20 Comparative effectiveness of accommodating and weight resistance training modes. 네이버 미소장
21 Symptomatic and functional responses to concentric-eccentric isokinetic versus eccentric-only isotonic exercise. 네이버 미소장
22 (1993). Isokinetic and assessment : Human Kinetic Publishers, pp. 123-127. 미소장
23 Effects of Resistance Training on Lower-Extremity Impairments in Older People With Hip Fracture 네이버 미소장
24 NY-ESO-1 and CTp11 Expression May Correlate with Stage of Progression in Melanoma 네이버 미소장
25 Surface Electromyographic Amplitude-to-Work Ratios During Isokinetic and Isotonic Muscle Actions 네이버 미소장
26 (2009). Influence of additional load on the moments of the agonist and antagonist muscle groups at the knee joint during dosed chain exerdse. J Electrormyogr Kinesiol, 19(3), 459466. 미소장
27 (2005). A Methodologic Approach for the Comparison Between Dynamic Contractions: Influences on the Neuromuscular System. J Athl Train, 40(A), 281 -287. 미소장
28 Agonist muscle activity and antagonist muscle co-activity levels during standardized isotonic and isokinetic knee extensions 네이버 미소장
29 Neuromuscular adaptations to 8-week strength training: isotonic versus isokinetic mode 네이버 미소장
30 (2008). Torque-velodty and power-velocity relatio nships during isokinetic trunk flexion and extension. Clin Biomedi (Bristol, Avon), 23(5), 520-526. 미소장
31 Knee Extensor Electromyographic Activity-to-Work Ratio is Greater With Isotonic Than Isokinetic Contractions 네이버 미소장
32 Comparison of isokinetic exercise versus standard exercise training in patients with chronic low back pain: a randomized controlled study 네이버 미소장
33 Isokinetic versus isotonic variable-resistance training. 네이버 미소장
34 (1980). Isokinetic versus Isotonic training in the development of lower body strength and power. Scholastic Coach, 49, 74-76. 미소장
35 Fatigue during repeated eccentric-concentric and pure concentric muscle actions of the plantar flexors 네이버 미소장