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4 results on '"V Szakács"'

1. Gender may have an influence on the relationship between Functional Movement Screen scores and gait parameters in elite junior athletes – A pilot study

Author

V Szakács, B Szilágyi, Mátyás O. Magyar, C Bartha, József Tihanyi, N Magyari, Rita M. Kiss, János Négyesi, K Galamb, Tibor Hortobágyi, and SMART Movements (SMART)

Subjects
Male, Correlation, 0302 clinical medicine, Gait (human), LOWER-EXTREMITY, Treadmill, reproductive and urinary physiology, biology, motion analysis, hemic and immune systems, JOINT MOTION, FEMALE, locomotion, embryonic structures, movement screens, LEAN BODY-WEIGHT, KNEE, Psychology, Sports, medicine.medical_specialty, Adolescent, Athletic Performance, ANTHROPOMETRIC ESTIMATION, gait, Affect (psychology), Sensitivity and Specificity, Young Adult, 03 medical and health sciences, Sex Factors, Physical medicine and rehabilitation, Physiology (medical), medicine, Humans, feedback methods, PLAYERS, Physical Examination, Functional movement, WALKING SPEED, Athletes, Reproducibility of Results, NATURAL-HISTORY, 030229 sport sciences, PERFORMANCE, biology.organism_classification, biological factors, Preferred walking speed, Gait analysis, Exercise Test, Physical therapy, human activities, 030217 neurology & neurosurgery
Abstract

Aims The aim of this study was to examine the effects of gender on the relationship between Functional Movement Screen (FMS) and treadmill-based gait parameters. Methods Twenty elite junior athletes (10 women and 10 men) performed the FMS tests and gait analysis at a fixed speed. Between-gender differences were calculated for the relationship between FMS test scores and gait parameters, such as foot rotation, step length, and length of gait line. Results Gender did not affect the relationship between FMS and treadmill-based gait parameters. The nature of correlations between FMS test scores and gait parameters was different in women and men. Furthermore, different FMS test scores predicted different gait parameters in female and male athletes. FMS asymmetry and movement asymmetries measured by treadmill-based gait parameters did not correlate in either gender. Conclusion There were no interactions between FMS, gait parameters, and gender; however, correlation analyses support the idea that strength and conditioning coaches need to pay attention not only to how to score but also how to correctly use FMS.

Published
2017

2. Short and long latency response due to transition from bilateral to unilateral contraction

Author

V. Szakács, Sandor Safar, József Tihanyi, and Bence Kopper

Subjects
musculoskeletal diseases, Adult, Male, medicine.medical_specialty, Contraction (grammar), Adult male, Adolescent, Knee Joint, Muscle Relaxation, Physical Exertion, Isometric exercise, Models, Biological, Young Adult, Physiology (medical), Internal medicine, Isometric Contraction, Reaction Time, Medicine, Humans, Short latency, Muscle, Skeletal, Knee extensors, business.industry, General Medicine, Long latency, Surgery, Muscle relaxation, Torque, Cardiology, Time to peak, business
Abstract

The aim of this study was to investigate the effect of fast and slow relaxation of the knee extensor muscle of the dominant leg on torque-time curve of the unilaterally contracting contralateral muscle. Eight adult male subjects were recruited without bilateral deficit. In Task 1 subjects exerted bilateral and unilateral torque and bilateral index was calculated. In Task 2 subjects relaxed the right knee extensors as slow as possible while maximum activation of the contralateral muscle had to be maintained. In Task 3 the relaxation was as fast as possible. During slow relaxation the short latency response (dM1) was 6.6% torque reduction in the left leg. On the contrary fast muscle relaxation resulted in a 7.3% increase. During long latency response the torque increased in both tasks, but did not exceed the torque measured in Task 1. Significant correlation was found between the rate of torque reduction (RTR) and dM1 (r = 0.95, P0.001), time to peak (t1) and dM1 (r = 0.812, P0.01). The regression analysis indicated that RTR greater or less than -1.0 Nm/ms results in opposite short latency response. We concluded that the different tasks for two knee extensor muscles result in transient interhemispheric effects which are time and rate of torque reduction dependent.

Published
2013

3. Gender may have an influence on the relationship between Functional Movement Screen scores and gait parameters in elite junior athletes - A pilot study.

Author

Magyari N, Szakács V, Bartha C, Szilágyi B, Galamb K, Magyar MO, Hortobágyi T, Kiss RM, Tihanyi J, and Négyesi J

Subjects
Adolescent, Female, Humans, Male, Reproducibility of Results, Sensitivity and Specificity, Young Adult, Athletic Performance physiology, Exercise Test methods, Gait physiology, Physical Examination methods, Sex Factors, Sports physiology
Abstract

Aims The aim of this study was to examine the effects of gender on the relationship between Functional Movement Screen (FMS) and treadmill-based gait parameters. Methods Twenty elite junior athletes (10 women and 10 men) performed the FMS tests and gait analysis at a fixed speed. Between-gender differences were calculated for the relationship between FMS test scores and gait parameters, such as foot rotation, step length, and length of gait line. Results Gender did not affect the relationship between FMS and treadmill-based gait parameters. The nature of correlations between FMS test scores and gait parameters was different in women and men. Furthermore, different FMS test scores predicted different gait parameters in female and male athletes. FMS asymmetry and movement asymmetries measured by treadmill-based gait parameters did not correlate in either gender. Conclusion There were no interactions between FMS, gait parameters, and gender; however, correlation analyses support the idea that strength and conditioning coaches need to pay attention not only to how to score but also how to correctly use FMS.

Published
2017
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4. Short and long latency response due to transition from bilateral to unilateral contraction.

Author

Sáfár S, Kopper B, Szakács V, and Tihanyi J

Subjects
Adolescent, Adult, Humans, Knee Joint physiology, Male, Muscle Relaxation physiology, Torque, Young Adult, Isometric Contraction physiology, Models, Biological, Muscle, Skeletal physiology, Physical Exertion physiology, Reaction Time physiology
Abstract

The aim of this study was to investigate the effect of fast and slow relaxation of the knee extensor muscle of the dominant leg on torque-time curve of the unilaterally contracting contralateral muscle. Eight adult male subjects were recruited without bilateral deficit. In Task 1 subjects exerted bilateral and unilateral torque and bilateral index was calculated. In Task 2 subjects relaxed the right knee extensors as slow as possible while maximum activation of the contralateral muscle had to be maintained. In Task 3 the relaxation was as fast as possible. During slow relaxation the short latency response (dM1) was 6.6% torque reduction in the left leg. On the contrary fast muscle relaxation resulted in a 7.3% increase. During long latency response the torque increased in both tasks, but did not exceed the torque measured in Task 1. Significant correlation was found between the rate of torque reduction (RTR) and dM1 (r = 0.95, P < 0.001), time to peak (t1) and dM1 (r = 0.812, P < 0.01). The regression analysis indicated that RTR greater or less than -1.0 Nm/ms results in opposite short latency response. We concluded that the different tasks for two knee extensor muscles result in transient interhemispheric effects which are time and rate of torque reduction dependent.

Published
2013
Full Text
View/download PDF

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