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Liebermann, D.G.; Franks, I. M. |
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Title |
The use of feedback-based technologies in skill acquisition |
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2004 |
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Notational analysis of Sport and Coaching Science |
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E & FN Spon Pub |
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M. Hughes; I.M. Franks |
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45 |
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Author |
Flash, T.; Richardson, M. E.; Handzel, A. A.; Liebermann, D. G. |
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Title |
Computational Models and Geometric Approaches in Arm Trajectory Control Studies |
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Book Chapter |
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Year |
2003 |
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Progress in Motor Control III: From Basic Science to Applications |
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Human Kinetics |
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Champaign, Il |
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M. L. Latash; M. F. Levin |
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44 |
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Liebermann, D.G.; Katz, L.; Hughes, M.D.; Bartlett, R.M.; McClements, J.; Franks, I.M. |
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Title |
Advances in the application of information technology to sport performance |
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Journal Article |
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Year |
2002 |
Publication |
Journal of Sports Sciences |
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J Sports Sci |
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20 |
Issue |
10 |
Pages |
755-769 |
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Keywords |
*Biofeedback, Psychology; *Computer Simulation; Humans; Models, Biological; Physical Education and Training/*methods; Psychomotor Performance/physiology; Sports Medicine/methods; *Task Performance and Analysis; Videotape Recording |
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This paper overviews the diverse information technologies that are used to provide athletes with relevant feedback. Examples taken from various sports are used to illustrate selected applications of technology-based feedback. Several feedback systems are discussed, including vision, audition and proprioception. Each technology described here is based on the assumption that feedback would eventually enhance skill acquisition and sport performance and, as such, its usefulness to athletes and coaches in training is critically evaluated. |
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Department of Physical Therapy, Sackler Faculty of Medicine, University of Tel Aviv, Israel |
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0264-0414 |
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PMID:12363293 |
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40 |
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Hoffman, J.R.; Liebermann, D.; Gusis, A. |
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Title |
Relationship of leg strength and power to ground reaction forces in both experienced and novice jump trained personnel |
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Year |
1997 |
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Aviation, Space, and Environmental Medicine |
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Aviat Space Environ Med |
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68 |
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8 |
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710-714 |
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*Aerospace Medicine; *Aviation; Biomechanics; Humans; Leg/*physiology; Male; Military Personnel/*education; *Physical Education and Training; Physical Fitness/*physiology; Range of Motion, Articular; Wounds and Injuries/etiology/*prevention & control |
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METHODS: There were 14 male soldiers who participated in this study examining the relationship of leg strength and power on landing performance. Subjects were separated into two groups. The first group (E, n = 7) were parachute training instructors and highly experienced in parachute jumping. The second group of subjects (N, n = 7) had no prior parachute training experience and were considered novice jumpers. All subjects were tested for one-repetition maximum (1 RM) squat strength and maximal jump power. Ground reaction forces (GRF) and the time to peak force (TPF) at landing were measured from jumps at four different heights (95 cm, 120 cm, 145 cm, and 170 cm). All jumps were performed from a customized jump platform onto a force plate. RESULTS: No differences were seen between E and N in either IRM squat strength or in MJP. In addition, no differences were seen between the groups for time to peak force at any jump height. However, significantly greater GRF were observed in E compared to N. Moderate to high correlations between maximal jump power and GRF (r values ranging from 0.62-0.93) were observed in E. Although maximal jump power and the TPF was significantly correlated (r = -0.89) at only 120 cm for E, it was interesting to note that the correlations between MJP and the time to peak force in E were all negative and that the correlations between these variables in N were all positive. CONCLUSIONS: These results suggest that experienced parachutists may use a different landing strategy than novice jumpers. This difference may be reflected by differences in GRF generated during impact and a more efficient utilization of muscle power during the impact phase of the landing. |
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Aeromedical Center, Physiological Training Unit, Israel Air Force, Israel |
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0095-6562 |
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PMID:9262813 |
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60 |
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Author |
Liebermann, D.G.; Issurin V. |
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Title |
Effects of vibratory stimulation on the perception of effort during isotonic contractions |
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Journal Article |
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Year |
1997 |
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Journal of Human Movement Studies |
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32 |
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171-186 |
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61 |
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