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Craig Pickering, Dylan Hicks, and John Kiely

aspects such as total contractile protein content of the muscle along with less fat infiltration ( Shaffer et al., 2017 ). In addition, changes in neuromuscular function, including slower rates of muscle activation, may, in turn, negatively affect muscle power and contraction speed ( Reid & Fielding, 2012

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Michael E. Hales and John D. Johnson II

research provides additional support to this concept by analyzing neuromuscular and metabolic response on sports fields exhibiting different mechanical properties. The findings suggest muscle activation and recruitment patterns are influenced by the time-dependent properties of a surface which causes the

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Garrett M. Hester, Zachary K. Pope, Mitchel A. Magrini, Ryan J. Colquhoun, Alejandra Barrera-Curiel, Carlos A. Estrada, Alex A. Olmos, and Jason M. DeFreitas

It is well established that aging is associated with a decrease in maximal strength and an even more dramatic reduction in rapid neuromuscular characteristics such as power output and rate of force development (RFD) ( Izquierdo, Aguado, Gonzalez, Lopez, & Häkkinen, 1999 ; Klass, Baudry

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Kelly Cheever, Jeffrey T. Howard, and Keisuke Kawata

to long-term changes in cervical spine sensorimotor function following contact sport exposure. 23 , 25 However, whether, and to what extent, CJPET can detect neuromuscular deficits following an acute bout of subconcussive impacts remains unexplored. Laboratory instrumented soccer headers have been

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Nicholas Tam, Ross Tucker, Jordan Santos-Concejero, Danielle Prins, and Robert P. Lamberts

– 3 Although these factors play a crucial role in running performance, additional factors such as effective running biomechanics and neuromuscular control are of interest to coaches and applied sports scientists as they are relatively easy to assess and may be more modifiable. Recently, Moore 4

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Davide Ferioli, Andrea Bosio, Johann C. Bilsborough, Antonio La Torre, Michele Tornaghi, and Ermanno Rampinini

. Basketball is an intermittent team sport characterized by changes of actions every 2 to 3 seconds 10 ; therefore, neuromuscular abilities (ie, power, strength, and speed) are heavily taxed during basketball matches. 11 Specifically, the ability to quickly change direction and jumping performance appear to

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Daria Neyroud, Jimmy Samararatne, Bengt Kayser, and Nicolas Place

Neuromuscular electrical stimulation (NMES), which consists of delivering bursts of electrical current to a muscle, to depolarize terminal axonal motoneuron branches, is widely used for strength training and rehabilitation. It can be less time consuming than voluntary training, 1 and presents the

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Naoya Takei, Jacky Soo, Hideo Hatta, and Olivier Girard

adaptations (eg, increased glycolytic enzyme activity). 2 Near-infrared spectroscopy is a noninvasive technique to assess tissue oxygen dynamics and oxidative metabolism, 3 whereas the magnitude and etiology of neuromuscular adjustments following exercise can also be assessed by motor nerve stimulations. 4

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Gabriela Souza de Vasconcelos, Anelize Cini, and Cláudia Silveira Lima

Fencing is a sport of agility, characterized by, among others things, changes of direction and movements in acceleration and braking. 1 Its practice requires dynamic neuromuscular control, which is the athlete’s ability to maintain stability while moving quickly and reacting to changes in

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Glyn Howatson, Raphael Brandon, and Angus M. Hunter

There is a great deal of research on the responses to resistance training; however, information on the responses to strength and power training conducted by elite strength and power athletes is sparse.

Purpose:

To establish the acute and 24-h neuromuscular and kinematic responses to Olympic-style barbell strength and power exercise in elite athletes.

Methods:

Ten elite track and field athletes completed a series of 3 back-squat exercises each consisting of 4 × 5 repetitions. These were done as either strength or power sessions on separate days. Surface electromyography (sEMG), bar velocity, and knee angle were monitored throughout these exercises and maximal voluntary contraction (MVC), jump height, central activation ratio (CAR), and lactate were measured pre, post, and 24 h thereafter.

Results:

Repetition duration, impulse, and total work were greater (P < .01) during strength sessions, with mean power being greater (P < .01) after the power sessions. Lactate increased (P < .01) after strength but not power sessions. sEMG increased (P < .01) across sets for both sessions, with the strength session increasing at a faster rate (P < .01) and with greater activation (P < .01) by the end of the final set. MVC declined (P < .01) after the strength and not the power session, which remained suppressed (P < .05) 24 h later, whereas CAR and jump height remained unchanged.

Conclusion:

A greater neuromuscular and metabolic demand after the strength and not power session is evident in elite athletes, which impaired maximal-force production for up to 24 h. This is an important consideration for planning concurrent athlete training.