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Relationships between Quadriceps:Hamstring Strength Ratio and Lower Extremity Injuries in netball Players

Open Journal of Applied Sciences 2024年第4期14卷 1022-1033页

作者： Henriette Hammill Physical Activity Sport and Recreation (PhASRec) North-West University (NWU) Potchefstroom South Africa

Background: netball is a popular sport. Due to high impact and quick movement, there is an enormous load on the lower extremities which increases the risk for injury. Aim: The aim of this study was to investigate the relationship between the quadricep and hamstring strength and the prevalence of lower extremity injuries in netball players. Setting: Twenty-five female netball players (age: 20.8 ± 1.4 years) voluntarily participated. Methods: The Cybex Isokinetic dynamometer was used to determine concentric knee torques. Quadriceps:hamstring strength ratio was determined. Occurrence of lower extremity injuries was documented bi-weekly. Results: Medium effect sizes were noted for flexion torque:work for the left leg and for the quadriceps:hamstring ratio (≥60%) for the right leg. All the other measured variables have a small effect size. 18.75% of lower extremity injuries and ConQ:ConH of Conclusion: Injuries to the ankle and knee are especially common among netball players. Hamstring and quadriceps muscle asymmetry (>10%) were found to be a potential indicator of lower extremity injury. Contribution: This study highlights awareness on lower extremity injuries and the strength ratio between the quadriceps and hamstrings. This can aid coaches and netball players to lower the risk for injuries and thus improve individual- and team performance.

关键词： netball Hamstrings Quadriceps Strength Ratio Lower Extremity Injuries

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The Impact of Tournament Load on Neuromuscular Function, Perceived Wellness and Coach Ratings of Performance During Intensified Youth netball Competition

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Journal of Science in Sport and Exercise 2023年第1期5卷 16-24页

作者： Marcus Lee Jericho Wee Nick Dobbin Quintin Roman Gabriel Choong Sport Science National Youth Sports InstituteSingaporeSingapore Department of Health Professions Manchester Metropolitan UniversityManchesterUK Human Potential Translational Research Programme Yong Loo Lin School of MedicineNational University of SingaporeSingaporeSingapore Performance Pathway National Youth Sports InstituteSingaporeSingapore

Purpose This study examined the effects of tournament load on neuromuscular function,perceived wellness and coach rat-ings of performance across two 6-day netball *** Thirty-nine female youth netballers(age=14.6±0.5 years,stature=165.9±4.7 cm,body mass=56.5±7.2 kg)were categorised as HIGH(10-11 matches,n=20)or LOW(6 matches,n=19)tournament *** load,jump height,perceived wellness and coach ratings of performance were monitored *** HIGH tournament load resulted in greater reductions in jump height on match-day 4(-8.3%,±5.6%)when compared to *** tournament load resulted in greater reductions in perceived soreness(-0.9,±1.1 AU)and overall wellness(-2.6,±2.3 AU)on match-day 3,and a greater reduction in perceived sleep(-0.9,±1.1 AU)on match-day *** tournament load was negatively associated with sleep quality and coach ratings of performance(effect size correlation=-0.34 to-0.47)when compared to *** Our results indicate that a higher tournament load resulted in greater increases in neuromuscular fatigue,reduced perceived wellness,and lower ratings of *** should consider pre-tournament preparation and monitoring strategies to minimise the physiological disturbances during an intensified tournament.

关键词： netball Monitoring Post-match fatigue Youth tournament Tournament structure

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