Eleftherios Kellis

..It also appears that body mass and fat free mass should be taken into consideration when examining age effects on strength in basketball players...

..However, the TI arm morphology changes from rest to MVC, indicating a nonuniform displacement of the TI, mainly between the superficial and deeper layers of the muscle...

..Controlled laboratory study...

..This could be attributed to alterations of the function of the neuromuscular system and force generation capacity, which may have altered the mechanics of soccer kick performance...

..Prediction using models which combine EMG data and anatomic parameters of the hamstring muscle components yielded more accurate estimates and therefore their use to examine co-contraction levels is recommended...

..To examine age and gender differences in schoolbag use and to compare findings in Greece with those of other countries...

..96 for the aEMG with SEM values reaching 11.37% of MVC. For the MF, the ICCs ranged from 0.44 to 0.98 (SEM range 4.49-18.19Hz). In our set up, ramp contractions can be used to examine hamstring EMG patterns with acceptable reliability...

..The purpose of this study was to investigate the relationship between isokinetic strength knee testing and soccer kick kinematics using electromyography (EMG)...

..Carrying the schoolbag by the handle has the largest effect on gait characteristics. Wearing backpacks by adjusting the shoulder straps to a loose position may reduce schoolbag effects...

..The purpose of this study was to examine the interrater and intrarater reliability of spinal extension and flexion measurements using a skin-surface (Spinal Mouse; Idiag, Voletswil, Switzerland) instrument...

..Modeling these muscles by assuming a uniform architecture along muscle length may yield less accurate representation of human hamstring muscle function...

..However, the conclusions on muscle co-activation depend on the equation used to estimate CI and therefore a commonly accepted method is necessary...

..However, this condition does not have a significant effect on the EMG patterns of these muscles when acting as antagonists during the test...

..However, this antagonist effect is not altered following the performance of an isokinetic fatigue knee extension task...

..Evaluating moment balance around the knee helps athletic trainers set appropriate targets for injury prevention and rehabilitation programs...

..To examine knee joint kinematics, electromyographic (EMG) activity patterns and ground reaction forces (GRF) during an instep soccer kick from three different approaches relative to the ball...

..The effects of fatigue on impact loading during running are unclear, with some authors reporting increased impact forces and others reporting decreased forces...

..Intraclass correlation coefficients ranged from 0.852 to 0.912 indicating high test-retest reliability of the estimated Mflx. For isometric contractions, the present model is suitable as a method to estimate antagonist muscle moments...

..In contrast, joint velocity coordination does not change as load is increased. The force-velocity relationship was linear and independent from the set of data used for its determination...

..Rehabilitation and sport professionals should consider the differences in fatigue profile when designing intermittent exercise programs for MR...

..05). It does not seem unreasonable to suggest that, if the aim of hopping plyometrics is to improve plantar flexor explosivity, incline hopping might be a more effective exercise than hopping on a plane surface...

..92-1.71 cm for fascicle length and muscle-tendon length measurements. The US method is a valid alternative tool for assessing basic architectural parameters of ST and BFlh components of the hamstring muscles...

..However, whether selective fatigue of agonists or antagonist muscles would cause different changes in muscle activation patterns is unknown...

..The maturation profile of FR in males and females during development appears to reflect the maturation profiles of peak torque, short-term muscle power, and lactate concentration after exercise...

..05). Despite the absence of vision, systematic training could have beneficial effects on technical skills, allowing athletes who are blind to develop skill levels comparable to sighted athletes...

..05). Our results suggest that the instep kick is more powerful than the outstep kick and that different types of kick require different types of skill training...

..Improvements in the performance of the cutting maneuver task through training might result in better transfer of energy and speed to the kicking task thus permitting players to perform more powerful kicks under realistic game conditions...

..This may lead subjects with OA to adopt a different movement strategy compared with controls...

..Emphasis on the PL exercises should be given when the competition period approaches, whereas the combination of OL and PL exercises may be used in the transition phases from precompetition to the competition period...

..05). The present results suggest that the application of the training programs using soccer-specific strength exercises would be particularly effective in improving of soccer kick performance...

..The above results indicate that agonist and antagonist activity depends on the intensity of the selected isokinetic fatigue test...

..05). These differences observed in MG would appear to favor better utilization of the force-length and the force-velocity relationships, of the muscle in adults compared with children...

..Ankle sprains are a common basketball injury. Therefore, examination of risk factors for injury in female professional basketball players is worthwhile...

..Single group, cross-sectional study...

..It is concluded that long-term practice could be associated with decreased isometric force variability independently from muscular length and coactivation of the antagonist muscles...

..The examination of muscular and tibiofemoral joint forces during maximal efforts of the knee flexors...

..The increase of jumping performance, after incline plyometrics should be taken into consideration by coaches, when they apply hopping exercise to improve explosiveness of the plantar flexors...

..To examine the effectiveness of rhythmic stabilization exercises and transcutaneous electrical nerve stimulation (TENS) and their combination in treating women with chronic low back pain...

..It was concluded that side-alternating vibration could have beneficial effects on static balance control for middle-aged women. Gains in isokinetic strength were quite similar for both experimental groups...

..Although ankle sprains are common in soccer, the role of various risk factors in amateur soccer players is unclear...

..6%-81%), and Oswestry Index (29.3%-31.8%) measurements. DISCUSSION AND CONCLUSION: Static and dynamic PNF programs may be appropriate for improving short-term trunk muscle endurance and trunk mobility in people with CLBP...

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