caa a22 4500 469055782 CHVBK 20180323132843.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF00717948 doi (NATIONALLICENCE)springer-10.1007/BF00717948 Effect of one-legged exercise on the strength, power and endurance of the contralateral leg [Elektronische Daten] A randomized, controlled study using isometric and concentric isokinetic training [P. Kannus, D. Alosa, L. Cook, R. Johnson, P. Renström, M. Pope, B. Beynnon, K. Yasuda, C. Nichols, M. Kaplan] Summary: The purpose of this investigation was to study the effect of one-legged exercise on the strength, power and endurance of the contralateral leg. The performance of the knee extensor and flexor muscle of 20 healthy young adults (10 men and 10 women) was first tested by Cybex II+ and 340 dynamometers. Then 10 subjects were chosen at random to train using one leg three times a week for 7 weeks whilst the other 10 served as controls. During the 8th week, the tests were repeated. Both quadriceps and hamstring muscles of the trained subjects showed a cross-transfer effect from the trained limb to the untrained side. This concerned the strength and power, as well as endurance characteristics of these muscles. The average change in peak torque of the quadriceps muscle was + 19% (P<0.001) in the trained limb, + 11% (P<0.01) in the untrained limb and 0% in the control limbs. In hamstring muscles the changes were + 14% (P<0.01), + 5% and −1%, respectively. Concerning muscle endurance (work performed during the last 5 contractions in the 25-repetition test) the corresponding changes were + 15% (P<0.01), +7% (P<0.01), and −1% in quadriceps muscle, and + 17% (P<0.05), +7%, and −3% in hamstring muscles. The average strength benefit in the untrained limb was +36% (hamstring muscles) and +58% (quadriceps muscle) of that achieved in the trained limb. Untrained hamstring muscle showed better benefits in the endurance parameters than in strength or power parameters, while in the quadriceps muscle this effect was reversed. A positive relationship was observed between the changes (greater improvement in the trained limb resulted in greater improvement in the untrained limb) (hamstring muscles:r=0.83,P<0.001, quadriceps muscle:r=0.53,P<0.001). In endurance parameters, this relationship was almost linear while in the strength and power parameters the results were more in favour of a curvilinear relationship with limited benefit. Springer-Verlag, 1992 Cross transfer effect nationallicence Hamstrings nationallicence Muscle performance nationallicence Quadriceps nationallicence Kannus P. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Alosa D. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Cook L. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Johnson R. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Renström P. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Pope M. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Beynnon B. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Yasuda K. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Nichols C. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut Kaplan M. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/2(1992-03-01), 117-126 0301-5548 64:2<117 1992 64 421 https://doi.org/10.1007/BF00717948 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00717948 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kannus P. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Alosa D. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Cook L. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Johnson R. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Renström P. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Pope M. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Beynnon B. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Yasuda K. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Nichols C. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Kaplan M. McClure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, 05 405, Burlington, VT, USA aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/2(1992-03-01), 117-126 0301-5548 64:2<117 1992 64 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer