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Comparison of tensiomyographic contractile properties of the knee muscles between endurance and power athletesIpavec, Matej ; Kukec, Žiga ; Kacin, AlanBACKGROUND: Postactivation potentiation (PAP) enhances contractility of skeletal muscle whereas fatigue deteriorates it. Available evidence suggests that the two phenomena may express differently in ... endurance and power athletes. OBJECTIVE: To compare the patterns of change in knee muscle contractility induced by PAP and fatigue between endurance and power athletes. METHODS: Eleven endurance and ten power athletes (age: 18–33 years) performed isokinetic fatigue and isometric PAP protocols with knee extensors and flexors on computerised dynamometer. Tensiomyography (TMG) of the vastus medialis and semitendinosus muscle medialis was performed before the protocols and during a 10-min recovery. RESULTS: The changes in TMG profile were most pronounced in the vastus medialis of power athletes following the PAP protocol and least pronounced in the semitendinosus of the endurance athletes following the fatigue protocol. The differences between athlete types were most significant for the time-domain TMG parameters of vastus medialis. A significant correlation (r= 0.51–0.73) between the fatigue indices and changes in TMG parameters was observed for the vastus medialis muscle only. CONCLUSIONS: The results show that the TMG patterns of PAP and fatigue in the vastus muscle differ between endurance and power athletes. In this muscle, the changes in TMG parameters are also strongly associated with the degree of fatigue.Source: Isokinetics and exercise science. - ISSN 0959-3020 (Vol. 31, no. 4, 2023, str. 289-301)Type of material - article, component part ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 168228611
Author
Ipavec, Matej |
Kukec, Žiga |
Kacin, Alan
Topics
tensiomyography |
skeletal muscle contractility |
postactivation potentiation |
peripheral fatigue |
quadriceps femoris |
hamstrings |
tenziomiografija |
kontraktilnost skeletnih mišic |
poaktivacijska potenciacija |
periferna utrujenost |
kvadriceps femoris |
stegenske mišice
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Ipavec, Matej | 35958 |
Kukec, Žiga | ![]() |
Kacin, Alan | 21036 |
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