The impact of video motion analysis on kinematics graph interpretation skills

1996 ◽  
Vol 64 (10) ◽  
pp. 1272-1277 ◽  
Author(s):  
Robert J. Beichner
Keyword(s):  
Motion Analysis ◽  
Graph Interpretation ◽  
Video Motion Analysis ◽  
The Impact

scholarly journals The use of video motion analysis to determine the impact of anatomic complexity on endovascular performance in carotid artery stenting

2019 ◽  
Vol 69 (5) ◽  
pp. 1482-1489 ◽  
Author(s):  
Alexander E. Rolls ◽  
Celia V. Riga ◽  
Sybghat U. Rahim ◽  
Willem Willaert ◽  
Isabelle Van Herzeele ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Motion Analysis ◽  
Carotid Artery Stenting ◽  
Video Motion Analysis ◽  
The Impact

scholarly journals Comparison of Two Methods to Estimate the Maximal Velocity of a Ball during an Overhand Throw

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 43
Author(s):  
Alanna Weisberg ◽  
Julie Le Gall ◽  
Pro Stergiou ◽  
Larry Katz
Keyword(s):  
Motion Analysis ◽  
Doppler Radar ◽  
Performance Indicator ◽  
Maximal Velocity ◽  
3D Motion ◽  
3D Motion Analysis ◽  
Ball Velocity ◽  
Significant Performance ◽  
The Right ◽  
The Impact

Maximal ball velocity is a significant performance indicator in many sports, such as baseball. Doppler radar guns are widely assumed to underestimate velocity. Accuracy increases as the cosine angle between the radar gun and the object decreases. The purpose of this study was to investigate the impact of player handedness and the location of the radar gun on the accuracy of ball velocity. Throws were analyzed in four conditions: the radar gun on the right side, throwing with the right arm, then with the left arm; and the radar gun on the left side, throwing with the right arm, then with the left arm. The Cronbach’s alpha for all four conditions showed α-values above 0.97; however, a paired t-test indicated significant differences between the 3D motion analysis and the radar gun. Bland–Altman plots show a high degree of scatter in all conditions. Results suggest that the radar gun measurements can be highly inconsistent when compared to 3D motion analysis.

Intrasubject Reliability of Spinal Range of Motion and Velocity Determined by Video Motion Analysis

1993 ◽  
Vol 73 (9) ◽  
pp. 626-631 ◽  
Author(s):  
Michael E Robinson ◽  
Patrick D O'Connor ◽  
Fred R Shirley ◽  
Michael Mac Millan
Keyword(s):  
Range Of Motion ◽  
Motion Analysis ◽  
Video Motion Analysis

scholarly journals Characteristics of Very High Intensity Runs of Soccer Players in Relation to Their Playing Position and Playing Half in the 2013-14 Spanish La Liga Season

2019 ◽  
Vol 66 (1) ◽  
pp. 213-222 ◽  
Author(s):  
Jesús Rivilla-García ◽  
Luis Carlos Calvo ◽  
Sergio Jiménez-Rubio ◽  
Victor Paredes-Hernández ◽  
Alejandro Muñoz ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Motion Analysis ◽  
Performance Indicators ◽  
High Intensity ◽  
Soccer Players ◽  
General Level ◽  
Analysis Tool ◽  
Video Motion Analysis ◽  
High Level ◽  
Very High

AbstractThe objective of this study was to carry out a detailed quantitative analysis of the very high intensity runs during actual play in the 2013-2014 Spanish First Division, at a general level and according to the specific playing position and half. 380 matches of the Spanish First Division in the 2013 - 2014 season were monitored using the Mediacoach video motion analysis tool. Total distance, very high intensity (above 21 km/h) running distance and the number of runs at very high intensity of 230 players from 20 teams in the Spanish First Division were analysed. The main findings of the study were that the performance indicators at very high intensities decreased from the first half to the second half for all outfield players (covered distance: 4694 ± 538 m vs 4485 ± 437 m, sprint distance: 256 ± 72 m vs 239 ± 67 m, number of sprints: 14.3 ± 3.5 vs 13.2 ± 3.1), except the central defenders (sprint distance: 166 ± 37 vs 166 ± 40 m, number of sprints: 10.0 ± 2.1 vs 9.8 ± 3.8). Secondly, although wide defenders (9759 ± 665 m) and central midfielders (9776 ± 942 m) covered the most distance during matches, it were the wide defenders (30 ± 5), centre-forwards (28 ± 7) and wide midfielders (31 ± 8) who performed the most runs at very high intensity. Consequently, the distance they ran at these very high intensity runs followed the same pattern. Such results enable general and specific profiles by demarcation to be established based on the demands of the game at high-level competitive play.

Motility behavior of Azospirillum species in response to aromatic compounds

1994 ◽  
Vol 40 (9) ◽  
pp. 705-711 ◽  
Author(s):  
Geralyne Lopez-de-Victoria ◽  
Donald R. Fielder ◽  
Richard K. Zimmer-Faust ◽  
Charles R. Lovell
Keyword(s):  
Motion Analysis ◽  
Swimming Speed ◽  
Aromatic Compounds ◽  
Rate Of Change ◽  
Behavioral Changes ◽  
Computer Assisted ◽  
Hydroxybenzoic Acid ◽  
Video Motion Analysis ◽  
Azospirillum Brasilense Sp7 ◽  
Azospirillum Lipoferum Sp59b

The motility of Azospirillum lipoferum Sp59b and Azospirillum brasilense Sp7 in the presence of the aromatic compounds benzoate, protocatechuate, 4-hydroxybenzoic acid, and catechol was studied using computer-assisted video motion analysis. Increases in swimming speed with concomitant decreases in the rate of change in direction and increases in path linearity are indicative of bacterial chemoattraction. With the exception of 4-hydroxybenzoic acid, the aromatic compounds tested altered the motility patterns of both species, consistent with a chemoattraction mechanism. 4-Hydroxybenzoic acid elicited significant behavioral changes only in A. brasilense. The highest speeds were recorded for most compounds at concentrations between 1 and 10 mM for A. lipoferum and at lower concentrations for A. brasilense. Catechol, supplied at a 10 mM concentration, reduced the swimming speed of A. brasilense but not of A. lipoferum. The distinct differences in swimming behavior observed between these two species of Azospirillum in response to aromatic compounds may be of ecological significance in soils.Key words: Azospirillum spp., motility, video motion analysis, aromatic compounds.

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