Search Results

You are looking at 21 - 30 of 3,039 items for :

Clear All
Restricted access

Alejandro Pérez-Castilla, Belén Feriche, Slobodan Jaric, Paulino Padial and Amador García-Ramos

The force platform is recognized as the ‘gold standard’ for testing vertical jumps. 1 – 3 The force platform estimates the velocity and power of the system center of mass from the directly recorded vertical ground reaction force data using the direct dynamic approach. Due to potential

Restricted access

Kajetan J. Słomka, Slobodan Jaric, Grzegorz Sobota, Ryszard Litkowycz, Tomasz Skowronek, Marian Rzepko and Grzegorz Juras

& Jaric, 2007 ) but also in routine testing of muscle mechanical capacities ( García-Ramos, Feriche, Pérez-Castilla, Padial, & Jaric, 2017 ; Markovic, Dizdar, Jukic, & Cardinale, 2004 ). A number of studies have assessed the force and power output produced in maximum vertical jumping either through

Restricted access

Antonio Dello Iacono, Marco Beato and Israel Halperin

-RM]) to induce a PAP effect, Dello Iacono and Seitz 8 recently proposed to use relatively lighter loads (ie, ∼60% 1-RM) equal to an optimal power load (OPL) 14 as the conditioning activity. OPL are exercise specific and may largely vary in terms of absolute loads. However, Soriano et al 15

Restricted access

Mark G.L. Sayers and Stephen Bishop

Upper body power is a key component for success in many sports. Athletes who can generate high power output during throwing, catching, attacking, or defending activities are often capable of superior performance. 1 A common method for assessing upper body power has been via a bench press throw. 1

Restricted access

Amador García-Ramos, Alejandro Torrejón, Alejandro Pérez-Castilla, Antonio J. Morales-Artacho and Slobodan Jaric

maximal force ( F 0 ) and maximal velocity ( V 0 ) capacities, respectively. 2 – 4 Since maximal power capacity ( P 0 ) depends on both F 0 and V 0 , a mixed approach using heavy, moderate, and light loads could be the optimal stimulus for developing P 0 . 5 , 6 The standard procedures for testing

Restricted access

Paul F.J. Merkes, Paolo Menaspà and Chris R. Abbiss

Cycling power meters typically rely on a measurement of crank arm, chain, pedal, or rear hub torque and angular velocity to calculate power output. 1 There are several models of power meters available on the market, with many validated against the SRM power meter (Schoberer Rad Messtechnik, Jülich

Restricted access

Jorg Teichmann, Edin K. Suwarganda, C. Martyn Beaven, Kim Hébert-Losier, Jin Wei Lee, Florencio Tenllado Vallejo, Philip Chun Foong Lew, Ramlan Abdul Aziz, Yeo Wee Kian and Dietmar Schmidtbleicher

rehabilitation of anterior cruciate ligament injuries. 5 Specifically, measures of maximal leg strength and power were improved with a 3-week UDP in athletes that had been cleared to return to training following knee injury after having completed 4 phases of a rehabilitation program 4 : mobility; stability

Restricted access

Marco Beato, Stuart A. McErlain-Naylor, Israel Halperin and Antonio Dello Iacono

chronic adaptations (eg, for strength, hypertrophy, power, injury prevention, rehabilitation) in both amateur and professional sporting settings. 9 , 33 , 37 – 40 Moreover, because of the portability of these devices, practitioners can use them outdoors or bring them out from weight rooms, further

Restricted access

Michael H. Stone, William A. Sands, Kyle C. Pierce, Michael W. Ramsey and G. Gregory Haff

Purpose:

To assess the effects of manipulating the loading of successive sets of midthigh clean pulls on the potentiation capabilities of 7 international-level US weightlifters (4 men, 3 women).

Methods:

Isometric and dynamic peak-force characteristics were measured with a force plate at 500 Hz. Velocity during dynamic pulls was measured using 2 potentiometers that were suspended from the top of the right and left sides of the testing system and attached to both ends of the bar. Five dynamic-performance trials were used (in the following order) as the potentiation protocol: women at 60, 80, 100, 120, and 80 kg and men at 60, 140, 180, 220, and 140 kg. Trials 2 vs 5 were specifically analyzed to assess potentiation capabilities. Isometric midthigh pulls were assessed for peak force and rate of force development. Dynamic lifts were assessed for peak force (PF), peak velocity (PV), peak power (PP), and rate of force development (RFD).

Results:

Although all values (PF, PV, PP, and RFD) were higher postpotentiation, the only statistically higher value was found for PV (ICCα = .95, P = .011, η2 = .69).

Conclusions:

Results suggest that manipulating set-loading configuration can result in a potentiation effect when heavily loaded sets are followed by a lighter set. This potentiation effect was primarily characterized by an increase in the PV in elite weightlifters.

Restricted access

Scott R. Brown, Erin R. Feldman, Matt R. Cross, Eric R. Helms, Bruno Marrier, Pierre Samozino and Jean-Benoît Morin

in F H and performance indicators (ie, maximal velocity [ v max ] and power [ P max ]) within the same maximal sprint trial. 10 While NMTs are seldom used in the field, the purpose of this research was to demonstrate a proof of concept acknowledging the theoretical link between asymmetry in F H