Effects of two neuromuscular fatigue protocols on landing performance

James, C. Roger; Scheuermann, Barry W.; Smith, Michael P.

doi:10.1016/j.jelekin.2009.10.007

Cited by 46 publications

(58 citation statements)

References 31 publications

(37 reference statements)

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“…The most common injury site is the lower limb, and 23%-67% accounted for the knee 1,2) . Fatigue has been found to increase the risk of injury 4) . Fatigue is defined as decreased ability of the muscle to contract and exert a force that develops gradually soon after the onset of the sustained physical activity 5,6) .…”

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confidence: 99%

“…Fatigue is defined as decreased ability of the muscle to contract and exert a force that develops gradually soon after the onset of the sustained physical activity 5,6) . One of the consequences of fatigue is that it reduces the skill-related physical fitness component such as balance 7 ) and agility 8 ) and strength 4,7 ) which consequently impaired sports performance 9) . Dynamic balance has been well established as a vital component of fitness among athletes such as gymnasts, footballer, golfer, ice-hockey players, rifle shooter and taekwondo practitioners 10,11) .…”

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confidence: 99%

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Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Zulfikri

Justine

2017

Phys Ther Res

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ABSTRACT. The objective of the study was to determine the effects of Kinesio taping (KT) in inhibiting fatigue and preserving dynamic balance. Male recreational athletes were recruited to participate in this study. Participants were blinded from the group assignment and divided into four groups (Group A; KT and fatigue, Group B; no tape and fatigue, Group C; KT and no fatigue and Group D; no tape and no fatigue) using sequentially opaque, sealed envelopes. Pre and post measurements of Modified Star Excursion Balance Test ( SEBT ) composite score and normalized reach distance were used to measure dynamic balance. Adapted Functional Agility Short Term Fatigue Protocol (FAST-FP) was used to induce fatigue. KT was applied to rectus femoris, biceps femoris and medial gastrocnemius of the dominant leg. There was a significant change in the SEBT composite score between groups over time (p<0.05) and in time effect (p<0.05). The main effect comparing the SEBT composite score between the group was not significant (p=0.16). Group A (90.10±9.40) and Group B (86.14±10.50) attained lower mean for SEBT composite score compared to Group C (97.30±10.83) and Group D (98.13±9.47) suggests that fatigue have a diminishing effect on dynamic balance. KT application inhibit the effects of fatigue and preserved lateral and posterior direction of SEBT. KT application may lower the risk for injuries in the lateral and posterior directions following fatigue induction. Key words: dynamic balance, fatigue, Kinesio Taping, Star Excursion Balance Test (SEBT) (Phys Ther Res 00: 00-00, 0000)A large volume of literature has reported the high prevalence of sport-related injuries worldwide [1][2][3] . The most common injury site is the lower limb, and 23%-67% accounted for the knee 1,2) . Fatigue has been found to increase the risk of injury 4) . Fatigue is defined as decreased ability of the muscle to contract and exert a force that develops gradually soon after the onset of the sustained physical activity 5,6) . One of the consequences of fatigue is that it reduces the skill-related physical fitness component such as balance 7 ) and agility 8 ) and strength 4,7 ) which consequently impaired sports performance 9) . Dynamic balance has been well established as a vital component of fitness among athletes such as gymnasts, footballer, golfer, ice-hockey players, rifle shooter and taekwondo practitioners 10,11) . It has been shown that possessing good dynamic balance not only reduces the risk of injuries 12 ) but would increase sports performance 10 ) . Unfortunately, these advantages may be limited after fatigue 12) . Dynamic balance is defined as the ability to maintain the stability of the center of mass during movement 13 ) . Biomechanical deviations of the lower extremity occur during movement of the center of mass away from the base of support 14) . Balance is gained by maintaining equilibrium in a gravitational field and the ability to react quickly yet efficiently manners toward destabilizing forces to regain stability via postural adjustments...

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confidence: 99%

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confidence: 99%

Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Zulfikri

Justine

2017

Phys Ther Res

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“…A study conducted by Williams et al (2004) showed an interaction between stiffness and increased loading rates that also supports the conclusions of Smith et al (2009), James (2010 and Denoth (1986). They investigated differences in running patterns between high-arched and low-arched runners.…”

Section: Measuring Ground Reaction Forces To Determine Muscular Stiffsupporting

confidence: 80%

“…While the scope of this study does not encompass recommending a means to prevent injury nor provide suggestions to improve jumping performance, collecting and interpreting vertical ground reaction force (GRF v ) data may be a way to examine changes in muscular stiffness (Denoth, 1986;James et al, 2010;Smith, 2009;Williams, 2004). In short, an increase in lower extremity muscular stiffness is correlated with an increase in peak GRFv magnitude, rate of impact loading (time from impact with the ground to peak GRF v ), and a decrease in impulse (integration of the area under the curve of a GRF v graph).…”

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Effect of Warm-Up Activity on Vertical Ground Reaction Forces in Basketball Players During Drop Jump Landings

Hinkel-Lipsker¹

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Effect of Warm-Up Activity on Vertical Ground Reaction Forces in Basketball PlayersDuring Drop Jump Landings Jacob Hinkel-Lipsker Purpose: The purpose of this study was to examine the effect of certain warm-up activities on vertical ground reaction forces (GRF v ) during a drop jump landing.Methods: Eight women and twelve men (mean age 22.6 ± 1.82 years) completed three warm-up activities on three separate days in a counterbalanced order: a passive stretching warm-up, a dynamic warm-up, and a no warm-up control. After completing each activity, participants were asked to perform eight drop jump landings on a force platform. GRF v data was sampled at 1000 Hz during each landing, and the variables analyzed were: peak forefoot and rearfoot magnitude, forefoot and rearfoot rate of loading, and impulse. Results:The dynamic warm-up had significantly greater values (p < 0.05) for forefoot peak magnitude, rearfoot peak magnitude, and forefoot rate of loading compared to the passive stretching and control conditions. Also, there were no significant differences among all activities for rearfoot rate of loading and impulse. Conclusions: The significantly greater values for forefoot peak magnitude, rearfoot peak magnitude, and forefoot rate of loading that the dynamic warm-up produced indicates that this activity may be effective in increasing muscular stiffness in the lower limbs. The failure of the passive stretching warm-up to reach significance indicates that this activity may not be effective in decreasing lower extremity muscular stiffness.

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“…A fadiga associada a mudança no desempenho pode gerar alteração no controle do movimento [1][2][3] e aumentar os riscos de lesões musculares [4][5][6] . A eletromiografia de superfície (EMG) é amplamente usada para investigação dos mecanismos envolvidos na fadiga neuromuscular e declínio da força muscular 7,8 .…”

Section: Introductionunclassified

Eletromiografia do bíceps braquial em contrações dinâmicas

Cerqueira

Carvalho

Pompeu

2013

Rev Bras Med Esporte

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RESuMoIntrodução: A reprodutibilidade da atividade eletromiográfica de superfície (EMG) é mais estudada em protocolos que envolvem contrações isométricas. Alguns fatores relacionados às contrações dinâmicas podem contribuir para a instabilidade do sinal mioelétrico e dificultar a reprodutibilidade da medida da EMG. Objetivo: Determinar a reprodutibilidade teste-reteste e quantificar o erro téc-nico da medida da frequência mediana (FM) e da amplitude (root mean square, RMS) da EMG, em contrações dinâmicas e estáticas. Métodos: Dez sujeitos foram testados em dois dias, sendo a atividade EMG registrada na maior porção do bíceps braquial. No primeiro dia foi feito o teste de uma repetição máxima (1RM) e de contração voluntária máxima (CVM). No segundo dia foram realizadas duas séries de 10 contrações dos flexores do cotovelo com 75% de 1RM, entremeadas por 1 h em repouso. Antes de cada série foi realizada uma CVM. Resultados: Para a FM e RMS foi observado alto coeficiente de correlação intraclasse para o sinal do bíceps braquial (CCI = 0,90-0,98 para a FM; CCI = 0,89-0,94 para o RMS) e de baixo para moderado coeficiente de variação (CV = 2,5-6,2% para a FM; CV = 14,6-16,3% para o RMS) em ambos os testes. Não foi observada diferença significativa entre teste e reteste (p > 0,05). Conclusão: A FM e o RMS apresentam alta confiabilidade e baixo a moderado erro em contrações estáticas e dinâmicas, possibilitando o uso da EMG para investigação da fadiga e de desordens neuromusculares.Descritores: músculo esquelético, fadiga muscular, análise espectral, eletromiografia. for RMS) and low to moderate coefficient of variation ABStRAct Introduction: Reproducibility of electromyographic activity (EMG) is the most studied in protocols involving isometric contractions. Some factors related to dynamic contractions may contribute to the instability of the myoelectric signal and affect the reproducibility of the measurement of EMG. Objective: To determine the test-retest reproducibility and quantify the technical error of the measurement of the median frequency (MF) and amplitude (root mean square, RMS) of the surface EMG in static and dynamic contractions. Methods: Ten subjects were tested in two days with the EMG activity recorded for the greatest portion of the biceps brachii tendon. In the first day the subjects did one test of maximum repetition (1MR) and maximal voluntary contraction (MVC

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Effects of two neuromuscular fatigue protocols on landing performance

Cited by 46 publications

References 31 publications

Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Effect of Warm-Up Activity on Vertical Ground Reaction Forces in Basketball Players During Drop Jump Landings

Eletromiografia do bíceps braquial em contrações dinâmicas

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