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Men's And Women's Tennis Earn Ita All-Academic Awards, Georgia Southern University

Athletics: News & Publications

• Men's and Women's Tennis earn ITA All-Academic Awards

Men’S Golf Earns Gcaa Presidents Special Recognition Honors, Georgia Southern University

Athletics: News & Publications

• Men’s Golf Earns GCAA Presidents Special Recognition Honors

Anita Howard Joins Coaching Colleagues To Form Coaches 4 Change, Georgia Southern University

Athletics: News & Publications

• Anita Howard Joins Coaching Colleagues To Form Coaches 4 Change

Werts Named To Wuerffel Trophy Watch List, Georgia Southern University

Athletics: News & Publications

• Werts Named to Wuerffel Trophy Watch List

Sun Belt Conference Moves Start Competitive Season To Sept. 3, Georgia Southern University

Athletics: News & Publications

• Sun Belt Conference Moves Start Competitive Season to Sept. 3

Wesley Kennedy Iii Named To 2020 Paul Hornung Award Watch List, Georgia Southern University

Athletics: News & Publications

• Wesley Kennedy III Named to 2020 Paul Hornung Award Watch List

Seven Eagles Named Men’S Golf All-American Scholars, Georgia Southern University

Athletics: News & Publications

• Seven Eagles Named Men’s Golf All-American Scholars

Men's Soccer Rounds Out 2020 Coaching Staff, Georgia Southern University

Athletics: News & Publications

• Men's Soccer Rounds Out 2020 Coaching Staff

Eagles Set To Play In Men’S Basketball Cancun Challenge, Georgia Southern University

Athletics: News & Publications

• Eagles Set to Play in Men’s Basketball Cancun Challenge

Points Of Pride, Georgia Southern University

Points of Pride (2013-2023)

• Rankings
• Academics
• Athletics
• Facilities
• Outreach
• Research

Johnson Iii Named To Nagurski Award Watch List, Georgia Southern University

Athletics: News & Publications

• Johnson III Named to Nagurski Award Watch List

Volleyball Earns Avca Team Academic Award, Georgia Southern University

Athletics: News & Publications

• Volleyball Earns AVCA Team Academic Award

Duncan Jr. Named To Thorpe Award Watch List, Georgia Southern University

Athletics: News & Publications

• Duncan Jr. Named to Thorpe Award Watch List

Dynamics Of Handstand Balance, Hannah Wyatt, Domenico Vicinanza, Karl Newell, Gareth Irwin, Genevieve Williams

ISBS Proceedings Archive

The purpose of this study was to identify parameters that are associated with more successful motor control during handstand performance. For two groups of gymnasts, ‘less skilled’, who were able to hold handstands for 4 to 6s, and ‘more skilled’, who held handstands in excess of 10s, centre of mass (CoM) and centre of pressure (CoP) motion during the initial 3s of the handstand stability phase were analysed, as well as the 6 to 9s stabilised period for the more skilled gymnasts (balance phase). Time-space, time-frequency, CoM-CoP coherence, Hurst Exponent and CoM-CoP causality were investigated in anterior-posterior (AP) and medio-lateral …

Running Biomechanics Improve Following An In-Season Intervention Program Based On Pre-Test Functional Movement Screen Scores In Collegiate Distance Runners, Monique Mokha, Yelizaveta Buluchevskaya, Amanda Leon

ISBS Proceedings Archive

The purpose of the study was to determine if 12-weeks of correcting underlying movement patterns (stepping, squatting, lunging) would change running mechanics in college distance runners. 10 runners underwent pre and post Functional Movement Screen (FMS) testing and motion analysis of running kinematics [bilateral peak hip adduction (HADD), hip internal rotation (HIR), contralateral pelvis drop (CPD), rearfoot eversion (REV), ankle dorsiflexion (AKD) and knee flexion (KFLEX)]. They performed corrective exercises 3x/week based on FMS results. FMS (pre 14 + 1.5 vs post 16.4 + 1.8, p=.001) and left KFLEX (pre 36.4^o + 11.3^o vs post 42.2^{o …}

Knee Joint Kinematics Of Support Leg During Maximal Instep Kicking In Female Soccer Players, Keiko Sakamoto

ISBS Proceedings Archive

The purpose of this study was to investigate the effect of knee motion of support leg during maximal instep kicking on female soccer players. Their kicking motions were recorded by a motion capture system. The range of motion of knee angle (knee variation) was caluculated. There were significant negative relationships of foot velocity with knee variation (r =0.73, p < 0.05). The participants were divided into small (n = 8) and large (n = 8) variation groups based on their change amount of support leg knee angle during forward swing. Foot velocity, vertical hip velocity of kicking leg, and vertical centre of pelvis displacement during forward swing phase of small knee variation group than those of large variation group were found significant differences (p < 0.05). These results suggested that training for female players should focus on reducing knee angular displacement (flexion) of support leg during forward swing phase in instep kicking.

The Relationship Between Pitch Velocity And Shoulder Distraction Force And Elbow Valgus Torque In Collegiate And High School Pitchers, Kristen F. Nicholson

ISBS Proceedings Archive

The purpose of this study was to 1) determine the relationship between baseball pitching velocity, shoulder distraction force, and elbow valgus torque, and 2) compare these relationships between college and high school baseball pitchers. Biomechanical pitching reports from collegiate and high school baseball pitchers were analysed with linearity not assumed. A total of 273 pitches were included in this study. Pitching velocity exhibits a positive linear relationship with both shoulder distraction force and elbow valgus torque among high school and college pitchers. However, when only examining pitches thrown above 85 mph, only high school pitches have a positive linear relationship …

Multi-Segment Contributions To Induced Ball Velocity In Collegiate Baseball Pitchers, Arnel Aguinaldo, Kristen Nicholson, Gordon Alderink, Thomas Kepple

ISBS Proceedings Archive

The purpose of this study was to implement an induced acceleration analysis (IAA) to estimate the contributions of multi-segment motion to the forward velocity of the ball in collegiate baseball pitchers. Marker-based motion capture and ground reaction force data were collected from a sample of 17 pitchers throwing off an instrumented mound. Kinematic and kinetic data were extracted to drive the IAA model to calculate the muscular and non-muscular contributions to ball velocity. The shoulder joint torque and velocity-dependent torque collectively made up the largest contribution to the total induced velocity of the ball at 61% and 37%, respectively. The …

Effects Of Fatigue On Kinematics And Shock Attenuation During Downhill Trail Running, Rocco Di Michele, Silvia Fantozzi, Sandro Bartolomei, Gabriele Semprini, Federico Stella, Simone Ciacci

ISBS Proceedings Archive

This study assessed the effects of a competitive trail run on running kinematics and shock attenuation in well-trained trail runners. Nine male runners performed a simulated short trail running race. Prior and 5-min after the race, participants completed a 290-m downhill run at pre-determined preferred speed. Inertial measurement units were used to assessselected kinematic parameters. The contact time showed a moderate increase in the fatigued condition (pre: 0.215 (0.024) s vs. post: 0.226 (0.219) s; p2vs. post: 49.1 (11.9) m/s²; p=0.038; d=0.56), while peak tibial acceleration and shock attenuation showed no change (p>0.05). These findings confirm that …

A Comparison Of Trunk And Shank Angles Between Elite And Sub-Elite Sprinters During Sprint Acceleration, Byron J. Donaldson, Helen Bayne, Neil E. Bezodis

ISBS Proceedings Archive

Acceleration is a movement that requires skilful positioning of the body to apply force in the desired direction. The sagittal plane orientation of the trunk and shank are features that coaches use to visually assess sprint acceleration technique. This study examined differences in trunk and shank angles between elite and sub-elite sprinters during early acceleration using inertial sensors. Elite sprinters exhibited more vertical trunk positions throughout all four steps compared to sub-elite with moderate to very large differences at discrete events (d = 0.79 - 2.16). Shank angles were more vertical at touchdown in sub-elite compared to elite sprinters (d …

Gaze And Step Controls Of An Elite Athlete During Approaching Different Hurdle Heights, Mitsuo Otsuka, Tadao Isaka, Desmond Boey, Marcus Lee

ISBS Proceedings Archive

This study investigated the gaze and step controls of one elite male hurdler when approaching hurdles at different heights. Across a 16 m runway, the participant performed three normal sprinting trials, and three hurdle running trials to clear a low, medium and high hurdle respectively. Gaze behaviour was captured using a mobile eye tracker that was mounted on the participant’s head and was filtered using a low-pass filter. In normal sprinting, the step length increased gradually from the first to eighth step. In the hurdle running trials, step length did not increase in the last step and fixations remained on …

Dynamic Contributions Of Support Leg Joint Torques To The Generation Of The Ipsilateral Knee Joint Motion And Ground Reaction Force In Sprinting, Sekiya Koike, Ryu Nagahara

ISBS Proceedings Archive

This study aimed 1) to quantify the contributions of the support leg joint torques to the generation of the anteroposterior forces, and 2) to clarify major contributors to the support leg knee joint angular velocity in terms of generating factors of the motion-dependent term (MDT) in sprinting. Dynamic contributions of the support leg joint torques in the maximal speed sprinting for elite and sub-elite sprinters were calculated, and the generating factors of the MDT were quantified The results showed that 1) ankle plantar flexion torque is the largest contributor to the generation of propulsive force regardless of performance level, and …

An Analysis Of The Throwing Technique Of College Male Javelin Throwers In A Competition, Mizuki Makino, Shigeo Hatakeyama, Michiyoshi Ae

ISBS Proceedings Archive

The purposes of this study were to investigate the throwing technique for Japanese college male athletes in official competitions, focusing on the torso and throwing arm motions, and to obtain basic information for the improvement in their techniques. Twenty-four male college throwers were videotaped and analysed for their throwing motion using the three-dimensional DLT method and caluclated the joint angle. The throwers were divided into three groups based on their records. Comparison to the ELITE throwers, the timing of the torso rotation for college groups was delayed. Significant differences in the right shoulder horizontal abduction angle around the left foot …

Differences In Reaction Force-Time Characteristics Experienced By Females When Running On A Track At Different Speeds, Harper E. Stewart, Jill L. Mcnitt-Gray

ISBS Proceedings Archive

Elite collegiate runners are susceptible to sustaining lower extremity stress related injuries. Ground reaction forces (GRFs) were analyzed to understand differences in mechanical loading at steady state 5.5 and 7 min/mile paces. We hypothesized GRF magnitudes would increase with speed while horizontal GRFs during braking would be unique to each participant. GRFs, inertial measurement units, and high speed video were collected during outdoor over ground running. Group differences were observed that were not always significant within participant. As speed increased, average horizontal GRF during braking (-0.25 to -0.29 BWs) decreased while peak vertical GRF increased (2.75 to 2.91 BWs). The …

The Effect Of Visual Gaze Location On Block-Start Biomechanics In Athletics, Marcus Lee, Michael Chan, Mitsuo Otsuka, Desmond Boey

ISBS Proceedings Archive

This study investigated the effects of varying visual gaze location (VGL), by means of externally-focused instruction, during the block-start “set” phase with the intention of optimizing block-start biomechanics for faster starts in an athlete-specific manner. Nine collegiate sprinters performed a series of block-starts while directing their VGL to their personal baselines, and at 0.5m, 1m, 2m and 3m from the start line. Twelve infrared opto-reflective cameras and one force plate were utilized to assess trunk, hip, knee and centre of mass kinematics, and blocks push-phase kinetics. An eyetracker was used to determine participants’ VGL. Some postural changes observed were a …

A Method Comparison Of Block Based Accelerometers And Force Sensors For Determination Of Response Times In The Sprint Start, Jonathan Holmes, Kevin Hayes, Andrew J. Harrison

ISBS Proceedings Archive

This study compares sprint start response times (RT) derived from load cells in the blocks with a RT from rail mounted accelerometer using methods similar to World Athletics (WA) approved start information systems (SIS). Seven national and international sprinters completed sprint trials that replicated race competition start procedures. Load cells were incorporated into starting blocks and the back block RT were analysed using: visual inspection (Visual RT), a 3SD threshold and CUSUM method, the rail accelerometer RT were analysed using a Visual RT and a 3SD Threshold method. On average the Rail Visual RT was detected 21 ms after the …

Inter-Limb Coordination During Sprint Acceleration, Helen Bayne, Byron Donaldson, Neil Bezodis

ISBS Proceedings Archive

Bilateral coordination is inherent to running motions but has not been investigated during sprint acceleration. The purpose of the study was to examine inter-limb thigh coordination during the first four steps of sprint acceleration in elite and sub-elite athletes. Anti-phase coordination patterns predominated in each step, but the proportion of anti-phase motion was higher in elite athletes (85.9 ± 10.8%) than sub-elite athletes (76.8 ± 10.9%, ES 0.83). Coordination profiles suggest that sub-elite athletes exhibit longer periods of the trailing (+) pattern around the time of touchdown (swing thigh flexing, stance thigh fixed) and the leading (-) pattern in the …

Contribution Of New Start Information System Prototype To The False Start Detection In Athletics, Matthieu Milloz, Andrew J. Harrison, Kevin Hayes

ISBS Proceedings Archive

This study aimed at comparing a prototype of a new Start Information System (SIS) with a World Athletics (WA) certified SIS which was used in competition. Twenty sprinters performed sprints under simulated race conditions. Response time (RT) was recorded by the WA certified SIS and the new SIS prototype based on a custom force plate and a new event detection algorithm to assess RT as the onset of arm force reaction. The mean value from RT recorded by the new SIS prototype for trials for which the RT given by the WA certified SIS were ranged between 100 ms and …

Differences In Running Biomechanics Of Elite Sprinters, Non-Elite Sprinters And Non-Runners, Svetlana Rezvanova, Alexey Bobyrev, Dmitriy Skvortsov

ISBS Proceedings Archive

The aim of the study was to investigate key predictors of fast sprinting. For this purpose, three groups of subjects were evaluated: elite sprinters, non-elite sprinters and non-runners. The analyzed groups consisted of 7, 9 and 11 subjects, respectively. Biomechanical running parameters were collected during the 30-meter acceleration up to maximum speed achievable by the subject. The obtained results revealed clear differences in running biomechanics among the all groups (contact time and step length normalised to body height). Also group results for «step length>body height» and «RSI>1 showed, that the values of these parameters are available only for …

Footstrike Patterns Of High And Mid-Mileage Non-Rearfoot Runners During An Exhaustive Run, Jan Urbaczka, Julia Freedman Silvernail, Daniel Jandacka

ISBS Proceedings Archive

The purpose of this study was to identify the effect of fatigue on footstrike patterns in two groups of habitually non-rearfoot runners. Twenty-eight runners participating in this study were divided into two groups by their weekly mileage. Participants completed a VO2max test to determine the velocity for the fatiguing run. Kinematic, physiological and biochemical data from the beginning and the remaining 3 minutes of fatiguing treadmill run were obtained. The overall time for fatiguing run exceeded 40 minutes (t = 48,1 ± 3,6 min.). The foot angle at the instant of initial contact significantly changed in both groups following fatigue. …