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#ISOMETRIC WORKOUT ALL MUSCLE FIBERS SERIES#
īruton JD, Wretman C, Katz A, Westerblad H (1997) Increased tetanic force and reduced myoplasmic following a brief series of tetani in mouse soleus muscle. īrazaitis M, Skurvydas A, Pukėnas K, Daniuseviciūtė L, Mickevicienė D, Solianik R (2012) The effect of temperature on amount and structure of motor variability during 2-minute maximum voluntary contraction. J Sports Sci Med 15:625–632īogdanis GC, Tsoukos A, Veligekas P, Tsolakis C, Terzis G (2014) Effects of muscle action type with equal impulse of conditioning activity on postactivation potentiation. Īndrews SK, Horodyski JM, MacLeod DA, Whitten J, Behm DG (2016) The interaction of fatigue and potentiation following an acute bout of unilateral squats. To understand the resultant warm-up of motor performance, it is necessary to recognize the coexistence of muscle PAP, tetanic maximal force potentiation, rapid recovery of metabolic muscle, and central muscle activation processes, as well as prolonged LFF and prolonged PCD.Īllen DG, Lamb GD, Westerblad H (2008) Skeletal muscle fatigue: cellular mechanisms. The findings demonstrate that post-activation potentiation was most effective after brief duration continuous and repetitive MVC protocols. Tetanic maximal torque (100 Hz) potentiation occurred 5 min after 15–30 s repetitive MVC modalities and after modality involving 15 electrical stimuli ( P < 0.05). After all of the 5–15 s MVC and 6 × 5-MVC protocols, the potentiation of the twitch rate was significantly higher than that recorded after continuous 30–60 s protocols ( P < 0.001). Muscle contraction modalities involving 5 s MVC were the most effective for PAP, whereas the lowest PAP effectiveness was found after the 12 × 5-MVC modality. Isometric maximal voluntary contraction (MVC), and electrically induced knee extension torque were measured at baseline and at regular intervals for 60 min after exercise.
Young healthy men ( N = 120) were randomly assigned to one of ten exercise modality groups which differed in contraction duration (5–60 s), activation pattern (intermittent or continuous contractions), activation mode (voluntary or stimulated), and intensity. The aim of this study was to follow post-activation potentiation (PAP), low-frequency fatigue (LFF), metabolic-induced fatigue and post-contractile depression (PCD) in response to different isometric muscle contraction modalities.