Agonist and antagonist muscle activation in elite athletes: influence of age

Quinzi, Federico; Camomilla, Valentina; Felici, Francesco; Mario, Alberto Di; Sbriccoli, Paola

doi:10.1007/s00421-014-2990-y

Cited by 18 publications

(33 citation statements)

References 48 publications

(77 reference statements)

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“…However, these inclusion criteria have been adopted to limit the variability in our experimental group, since different hormonal levels may influence sEMG characteristics (Felici et al., ). In addition, the choice of including only sedentary volunteers allowed us to increase the possibility to generalize our results, since sportsmen may present peculiar adaptations of their muscular (Quinzi, Camomilla, Felici, Di Mario, & Sbriccoli, ) and nervous systems (Berchicci, Quinzi, Dainese, & Di Russo, ) that can alter their neuromuscular activation. One last consideration should be addressed on the adoption of such devices.…”

Section: Discussionmentioning

confidence: 99%

Effects of a novel neck balance system on neuromuscular fatigue of neck muscles during repeated flexions and extensions

Quinzi

Giombini

Pigozzi

2018

Hum Ftrs & Erg Mfg Svc

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This study aimed at investigating the effects of a novel neck balance system (NBS), which is a baseball cap with counterweights in the occipital part, on neuromuscular fatigue of neck muscles during and after a full‐range repeated neck flexion‐extension task. Surface electromyography (sEMG) of sternocleidomastoid (SCM) and semispinalis capitis (SC) muscles was recorded in 15 healthy individuals during full‐range flexion‐extension movements of the neck lasting 5 min at a fixed pace (1 Hz), with or without NBS. Maximal isometric force and sEMG were recorded before and after the fatiguing task. During the fatiguing task, the SC muscle showed a higher decline in amplitude of sEMG with NBS than without NBS, while no differences in the SCM muscle emerged between the two conditions. Maximal isometric force of both neck flexor and extensor muscles decreased significantly after the fatiguing task, both with NBS (p < .05) and without NBS (p < .05), with no differences between the two conditions. In conclusion, adopting the NBS promotes an increase of the activation of neck extensor muscles, possibly leading to earlier decline of the neuromuscular performance and to diminished ability to actively stabilize neck structures. For these reasons, the adoption of the NBS during dynamic, fatiguing contractions may not be appropriate.

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Section: Discussionmentioning

confidence: 99%

Effects of a novel neck balance system on neuromuscular fatigue of neck muscles during repeated flexions and extensions

Quinzi

Giombini

Pigozzi

2018

Hum Ftrs & Erg Mfg Svc

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“…Karate elite athletes are usually prescribed a mixed training regime that elicits adaptations in both anaerobic and aerobic energy pathways (6,17,44). Indeed, karate training has been shown to increase muscular strength; functional mobility; mental, moral, and physical health; and self-actualization (8,40). Moreover, recently, it has been found that intensive karate training induced higher muscle activation during the execution of karate-specific kicks (23).…”

Section: Introductionmentioning

confidence: 99%

Biochemical status, oxidative and antioxidant responses after 3-month specific training in elite karate athletes

et al. 2017

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Aim To investigate the effects of 3-month-long specific training program on biochemical status, oxidative and antioxidant responses in elite karatekas. Methods Twenty male karatekas [BMI: 21.9 ± 2.4 (kg/m)] participated in this study. They performed a 3-month specific training to prepare for an international competition. We measured selected biochemical parameters, the oxidative and antioxidant responses before (T0) and after 3 months of intense karate training (T1). Results We found significant increases in catalase activity (26.3% ± 21.3%, p < 0.0005), superoxide dismutase activity (15.9% ± 28.8%, p < 0.05), and a significant decrease in malondialdehyde levels (17.2% ± 13.7%, p < 0.0005) after 3 months of karate training. Moreover, the athletes' biochemical status was significantly improved at T1 compared with T0 (for the majority of parameters, p < 0.0005). Conclusions The specific training program improves the prooxidant-antioxidant balance of elite karate athletes. It could be recommended for athletes having similar physical fitness level.

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“…In kicks, the angular momentum of the leg segment and joints are determined by the angular velocities of these segments (Quinzi et al, 2014(Quinzi et al, , 2015Sørensen et al, 1996). Furthermore, the interaction of agonist and antagonist muscle recruitment is an important determinant of the angular velocity (Sørensen et al, 1996;Sbriccoli et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the interaction of agonist and antagonist muscle recruitment is an important determinant of the angular velocity (Sørensen et al, 1996;Sbriccoli et al, 2010). This interaction is traditionally visualized through the cocontraction index (Quinzi et al, 2013(Quinzi et al, , 2015. A greater cocontraction implies a higher antagonist muscle opposition to the intended movement.…”

Section: Introductionmentioning

confidence: 99%

Neuromuscular performance of Bandal Chagui: Comparison of subelite and elite taekwondo athletes

Moreira

Goethel

Gonçalves

2016

Journal of Electromyography and Kinesiology

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With the aim of comparing kinematic and neuromuscular parameters of Bandal Chagui kicks between 7 elite and 7 subelite taekwondo athletes, nine Bandal Chaguis were performed at maximal effort in a selective reaction time design, simulating the frequency of kicks observed in taekwondo competitions. Linear and angular leg velocities were recorded through 3D motion capture system. Ground reaction forces (GRF) were evaluated by a force platform, and surface electromyographic (sEMG) signals were evaluated in the vastus lateralis, biceps femoris, rectus femoris, tensor fasciae lata, adductor magnus, gluteus maximus, gluteus medius, and gastrocnemius lateralis muscles of the kicking leg. sEMG data were processed to obtain the cocontraction indices (CI) of antagonist vs. overall (agonist and antagonist) muscle activity. CI was measured for the hip and knee, in flexion and extension, and for hip abduction. Premotor, reaction (kinetic and kinematic), and kicking times were evaluated. Timing parameters, except kinetic reaction time, were faster in elite athletes. Furthermore, CI and angular velocity during knee extension, foot and knee linear velocity, and horizontal GRF were significantly higher in elite than in subelite athletes. In conclusion, selected biomechanical parameters of Bandal Chagui appear to be useful in controlling the training status of the kick and in orienting the training goal of black belt competitors.

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Agonist and antagonist muscle activation in elite athletes: influence of age

Cited by 18 publications

References 48 publications

Effects of a novel neck balance system on neuromuscular fatigue of neck muscles during repeated flexions and extensions

Effects of a novel neck balance system on neuromuscular fatigue of neck muscles during repeated flexions and extensions

Biochemical status, oxidative and antioxidant responses after 3-month specific training in elite karate athletes

Neuromuscular performance of Bandal Chagui: Comparison of subelite and elite taekwondo athletes

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