PO-1943 Radiotherapy for the vulvar region in frog-leg position: improving reproducibility and comfort.

Selected kinematic variables in the performance of the Gold and Silver medalists and the eighth-place finisher in the women's 100-meter hurdles final at the 1984 Summer Olympic Games were investigated. Cinematographic records were obtained for all track hurdling events at the Games, with the 100-meter hurdle performers singled out for initial analysis. In this race, sagittal view filming records (100 fps) were collected at the 9th hurdle of the performance. Computer generated analysis variables included both direct performance variables (body velocity, support time, etc.) and body kinematics (upper leg position, lower leg velocity, etc.) that have previously been utilized in the analysis of elite athlete hurdlers. The difference in place finish was related to the performance variables body horizontal velocity (direct), vertical velocity (indirect), and support time (indirect). The critical body kinematics variables related to success included upper and lower leg velocity during support into and off the hurdle (direct), relative horizontal foot position (to the body) at touchdown into and off the hurdle (indirect), and relative horizontal foot velocity (to the body) at touchdown into the hurdle.

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Ultrasound Investigation of Leg Position to Enhance Femoral Vein Exposure for Cannulation

Journal of Emergency Medicine ◽

10.1016/j.jemermed.2014.02.001 ◽

2014 ◽

Vol 47 (2) ◽

pp. 176-181 ◽

Cited By ~ 8

Author(s):

Craig Randall ◽

Erik Schmeiser ◽

Emily Fiers ◽

Andrew Little ◽

Godwin Dogbey ◽

...

Keyword(s):

Femoral Vein ◽

Ultrasound Investigation ◽

Leg Position

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Comparison of stirrup lengths chosen for flatwork by novice and experienced riders

Comparative Exercise Physiology ◽

10.3920/cep170033 ◽

2018 ◽

Vol 14 (4) ◽

pp. 223-230 ◽

Cited By ~ 1

Author(s):

M. Andrews-Rudd ◽

C. Farmer-Day ◽

H.M. Clayton ◽

J.M. Williams ◽

D.J. Marlin

Keyword(s):

Standing Position ◽

Knee Angle ◽

Leg Length ◽

Greater Trochanter ◽

Significant Difference ◽

And Function ◽

Leg Position ◽

Combined Data

Although stirrups may be considered an essential part of equestrian equipment, there is little research describing their use and function. The aim of the present study was to compare stirrup lengths chosen for flatwork by novice and experienced riders, and to measure the associated leg position and knee angles. Ten novice and ten experienced riders, with kinematic markers attached to their greater trochanter, lateral femoral epicondyle, and lateral fibular malleolus, mounted three horses and a mechanical horse. The riders selected an appropriate stirrup length for flatwork by adjusting the unnumbered stirrup leathers. Stirrup length was measured and expressed as a percentage of the rider’s leg length measured from the greater trochanter to the floor when standing. Lateral photographs were taken from both sides with the riders mounted on each horse in a standing position. The kinematic markers were digitised to measure knee angle and ankle position relative to the hip in the anteroposterior direction. Within riders, there was no significant difference in stirrup length between the three live horses or between the mechanical horse and live horse. Experienced riders consistently selected a significantly longer stirrup length as a percentage of their leg length compared with novice riders (combined data for live horses and mechanical horse; P=0.005). Experienced riders demonstrated a significantly larger knee angle (combined data for live horses and mechanical horse) compared with novice riders (118±8° and 109±7°, respectively; P=0.016). Novice riders had a significantly larger knee angle on the mechanical horse compared with the live horse (115±9° versus 107±9°, respectively; P=0.003). The relatively longer stirrup length selected by experienced riders is thought to reflect the development of an independent seat, which implies the ability to move the legs independently of the pelvis. The chair seat adopted by novice riders on the mechanical horse could be considered counter to improving their equitation skills.

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Motor Programs as Indicators of Penalty Direction in Soccer

International Journal for Innovation Education and Research ◽

10.31686/ijier.vol8.iss9.2619 ◽

2020 ◽

Vol 8 (9) ◽

pp. 224-233

Author(s):

Luiz Felipe Pinto Oliveira da Motta ◽

Ricardo Fontes Macedo ◽

Elizabeth Cárpio Rivera ◽

Angela Luciana De-Bortoli ◽

Robelius De-Bortoli

Keyword(s):

Behavior Pattern ◽

Video Camera ◽

The Body ◽

Motor Patterns ◽

Motor Programs ◽

Front View ◽

Elbow Angle ◽

Patterns Of Behavior ◽

Prior Intention ◽

Leg Position

Introduction: Many football games are decided on penalties and usually in championship final games. When seeking to anticipate movements, differences in amplitude can harm players because the informational movement appears to be spread "globally" throughout the action and should be coded at several levels. Thus, it would be interesting to analyze the entire period of the kick, since the player begins his run to approach the ball to recognize the motor patterns used in the kick that identify his direction. Objective: The objective of this study is to identify patterns of behavior in penalty kicks that may indicate the direction of their action / kick and in my moment they appear. Methodology: The sample consisted of 21 subjects hitting a penalty kick, 18 males and 3 females with an average age of 22.18 ± 2.44 years and two goalkeepers with college football experience. The tests consisted of a battery of two penalty kicks for each subject in order to score. The kicks were recorded by a video camera with a front view of the goal goal and the back of the batter. The kick phases were divided into the starting leg position; first step leg; angle of the elbow in relation to the body seen from behind; angle of the elbow in relation to the displacement line seen from above; direction of the tip of the supporting foot and position on the goal where the kick was. Each kick was preceded by a start signal. The data were analyzed from the registration of each variable and the position of the goal in which the ball was kicked, considering it in three sectors: left, right and central. Results: The main results indicated that the variable “Leg of the first step” had 81% of the kicks associated with the direction of the goal; 52.4% of second kicks had repeated the pattern of behavior and 84.6% had repeated the pattern of behavior regardless of the goal position. The variable “Elbow angle in relation to the body seen from behind” had 81.8% repeated behavior pattern regardless of the goal position and the variable “Elbow angle in relation to the displacement line seen from above” had 81% association with the sector of the goal in which the ball was kicked; 52.4% of second kicks had repeated the pattern of behavior and 91.7% had repeated the pattern of behavior regardless of the goal position. Conclusions: The main conclusions indicate that it is possible to relate the kick location with the batter's body information; the start of the race seems to indicate that there is a prior intention of movement programs; the decision of where to hit the penalty appears to be made before contact with the ball and more closely to the placement of the support foot and with this relationship, the size of the goal to be defended by the goalkeeper could be reduced, increasing the possibility of defense.

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E47 Initial experience of start to finish prone nephrostomyless PCNL in the split leg position: An alternative to standard prone and supine PCNL

European Urology Supplements ◽

10.1016/s1569-9056(11)61240-2 ◽

2011 ◽

Vol 10 (7) ◽

pp. 494

Author(s):

A. Laird ◽

S. Krishna Nalagatla

Keyword(s):

Initial Experience ◽

Leg Position

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Sensorimotor recalibration during split-belt walking: task-specific and multisensory?

Journal of Neurophysiology ◽

10.1152/jn.00079.2016 ◽

2016 ◽

Vol 116 (4) ◽

pp. 1539-1541 ◽

Cited By ~ 4

Author(s):

Wouter Hoogkamer ◽

Megan K. O'Brien

Keyword(s):

Contact Force ◽

Movement Execution ◽

Movement Perception ◽

Leg Position

Motor adaptations not only recalibrate movement execution but also can lead to altered movement perception in multiple sensory domains. Vazquez, Statton, Busgang, and Bastian ( J Neurophysiol 114: 3255–3267, 2015) recently showed that split-belt walking affects perception of leg speed during walking, but not perceptions of leg position during standing and walking or perception of contact force during stepping. Considering their findings within the broader scope of sensorimotor recalibration in other tasks, we suggest that sensorimotor recalibrations are task specific and can be multisensory.

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