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Articles 360961 - 360990 of 5211448
Full-Text Articles in Entire DC Network
Association Between Morphology And Hip And Knee Joint Reaction Forces During Running In American Football Players: Implications For Osteoarthritis Development, Monique Mokha, Sean Mcbride, Jacob Haberer, Johnathan Polletta, Nicole Branum, Marissa Bonsangue, Andrew Schafer, Jack Stensland, Nivene Hojeij, Elie Christoforides
Association Between Morphology And Hip And Knee Joint Reaction Forces During Running In American Football Players: Implications For Osteoarthritis Development, Monique Mokha, Sean Mcbride, Jacob Haberer, Johnathan Polletta, Nicole Branum, Marissa Bonsangue, Andrew Schafer, Jack Stensland, Nivene Hojeij, Elie Christoforides
ISBS Proceedings Archive
National Football League (NFL) American football players are exposed to osteoarthritis risk factors of obesity and high joint loads. We sought to examine the association between total body mass (TBM), lean body mass (LBM), body fat percent (BFP), peak compressive hip and knee joint reaction forces (JRF), and vertical ground reaction forces (vGRF) in NFL draft eligible players during a high-speed run. One-hundred twenty-five participants ran at 6.5 m/s for 5 sec on an instrumented treadmill. Results showed moderate to low significant negative associations between TBM, LBM, and vGRF and hip and knee compression JRF. There was a negligible significant …
Association Between Biomechanical Critical Speed And The Speed At Anaerobic Threshold, Ting-Hung Huang Mr., Yi-Cheng Chou Mr., Yin-Shin Lee Dr., Philip Xaver Fuchs Dr., Tzyy-Yuang Shiang Dr.
Association Between Biomechanical Critical Speed And The Speed At Anaerobic Threshold, Ting-Hung Huang Mr., Yi-Cheng Chou Mr., Yin-Shin Lee Dr., Philip Xaver Fuchs Dr., Tzyy-Yuang Shiang Dr.
ISBS Proceedings Archive
This study investigated the associations between the running speeds corresponding to deflection points in biomechanical parameters and the speed at the anaerobic threshold. Fifteen male recreational runners participated, running on a treadmill with gradual speed increases until perceived exhaustion. The anaerobic threshold was measured using a spiroergometry device, and kinematic data were recorded by four inertial sensors on their shanks and trunk. Stepwise regression analysis indicated that the running speeds at the deflection points of angular velocity of thorax rotation and peak tibial acceleration were the most effective predictors of the speed at the anaerobic threshold (adjusted R2 = …
Assessing The Relationship Between Contralateral Limb Synergy And Rock-Climbing Efficiency, Jeromy Miramontes, Steven Leigh, Robert Powell, Suzanne Konz
Assessing The Relationship Between Contralateral Limb Synergy And Rock-Climbing Efficiency, Jeromy Miramontes, Steven Leigh, Robert Powell, Suzanne Konz
ISBS Proceedings Archive
The purpose of this study was to determine the relationship between the continuous relative phase (CRP) of a rock-climbing move. Rock climbers (19) of varying years of experience, age, and gender attempted a competition-style bouldering problem as many times as possible in a given time frame. CRP angles were calculated for the left hip to right shoulder and left knee to right elbow and Geometric Entropy (GE) was calculated in 2 dimensions. CRP of shoulder to hip and elbow to knee joint angles showed no association with time to complete (TtC) and GE. There was a positive trend as blood …
Female Athletes Are At Higher Risk To Suffer Anterior Cruciate Ligament Ruptures During The Ovulatory Phase Of Their Menstrual Cycle, Lisa Marie Reitel, Dominic Michael Rasp
Female Athletes Are At Higher Risk To Suffer Anterior Cruciate Ligament Ruptures During The Ovulatory Phase Of Their Menstrual Cycle, Lisa Marie Reitel, Dominic Michael Rasp
ISBS Proceedings Archive
This study examined the effect of the phase of the woman’s menstrual cycle on the rate of injuries of the anterior cruciate ligament. 39 females completed a questionnaire asking for the phase of their menstrual cycle, in which their most recent anterior cruciate injury occurred. A chi-square test revealed that the phase of the menstrual cycle has a significant effect (p < 0.001) on the aforementioned injury rate. During their ovulatory phase, women are at 4.33-times higher risk of suffering an anterior cruciate ligament rupture, while all other phases of the menstrual cycle show a less than statistically expected risk of anterior cruciate injury. We hence suggest that the participation in risk related sports should be carried out with reduced intensity or adjusted training content to avoid injuries of the anterior cruciate ligament during the two days of the ovulatory phase of a woman’s menstrual cycle.
Characteristics Of Hamstring Electromyographic Activity And Break-Point Angle During Nordic Hamstring Exercise At Different Ankle Positions, Taspol Keerasomboon, Parunchaya Jamkrajang, Weerawat Limroongreungrat, Thammanunt Chrunarm, Norikazu Hirose
Characteristics Of Hamstring Electromyographic Activity And Break-Point Angle During Nordic Hamstring Exercise At Different Ankle Positions, Taspol Keerasomboon, Parunchaya Jamkrajang, Weerawat Limroongreungrat, Thammanunt Chrunarm, Norikazu Hirose
ISBS Proceedings Archive
To compare the electromyographic (EMG) activity of the biceps femoris long head (BFlh), and semitendinosus (ST) muscles during the Nordic Hamstring Exercise (NHex) while setting the ankle joint positions at plantar flexion, dorsiflexion (neutral), and dorsiflexed (neutral) position with support. Male volunteers randomly performed the following exercise: NHex with ankle dorsiflexion (DF), NHex with ankle dorsiflexion with sole support (DFS), and NHex with ankle plantarflexion (PF). The BFlh and ST EMG activities were measured. A repeated measures ANOVA was performed to compare the EMG activity during NHex with the ankle variations. The results showed that EMG activity was significantly higher …
Applying Dose-Response Analysis In Sport Biomechanics: An Example Of Badminton Footwork And Footwear, Qichang Mei A/Prof, Xiaoyi Yang, Justin Wade Fernandez, Yaodong Gu
Applying Dose-Response Analysis In Sport Biomechanics: An Example Of Badminton Footwork And Footwear, Qichang Mei A/Prof, Xiaoyi Yang, Justin Wade Fernandez, Yaodong Gu
ISBS Proceedings Archive
Efficient footwork and appropriate footwear are important elements in badminton. This study aims to report the application of dose-response analysis in sports biomechanics, presenting the example of analysing the biomechanical response to training intervention with increased wearable resistance (WR) loads and the response of footwork performance to systematically increased wedge hardness in the design of badminton footwear. A further technique of data dimensionality reduction was employed to decipher the dose-response effect via reporting key PC explanation of ~90% with WR intervention, and 61.98%, 21.26%, and 8.1%. The example of badminton biomechanics may provide implications for future research and data analysis, …
Maximal Internal Knee Adduction Moment Is Not Related To Lateral Central Femur Cartilage Structure In Healthy Runners, Daniel Jandacka, Jiri Skypala, Jan Plesek, Victor Casula, Jaroslav Uchytil, Michal Burda, Vera Jandackova, Dominik Vilimek, Joseph Hamill, Miika T. Nieminen
Maximal Internal Knee Adduction Moment Is Not Related To Lateral Central Femur Cartilage Structure In Healthy Runners, Daniel Jandacka, Jiri Skypala, Jan Plesek, Victor Casula, Jaroslav Uchytil, Michal Burda, Vera Jandackova, Dominik Vilimek, Joseph Hamill, Miika T. Nieminen
ISBS Proceedings Archive
The purpose of this study was to investigate the association between maximal internal knee adduction moment (KAM) during running and the lateral knee cartilage structure in healthy adults. 1104 participants 18-65 years old participated in this study. Biomechanics of the lower extremity during running at the individual’s self-preferred speed were recorded using motion capture system and force plates. A 1.5T MRI scan was used to determine T2 relaxation time of the lateral central femoral cartilage. When controlled for age, sex, running distance and morphological findings of a radiologist in a statistical model, the KAM (OR = 0.95, CI 0.80-1.12) did …
The Effect Of Wide Preparatory Stance On Diving Save Performance In Female Goalkeepers, Rony Ibrahim, Idsart Kingma, Vosse De Boode
The Effect Of Wide Preparatory Stance On Diving Save Performance In Female Goalkeepers, Rony Ibrahim, Idsart Kingma, Vosse De Boode
ISBS Proceedings Archive
The purpose of this study was to investigate the effect of a wider preparatory stance on diving save performance in female goalkeepers. Five national-level goalkeepers performed dives from preferred and wide (75% of leg length) preparatory stance. Repeated measures ANOVA showed no effect of preparatory stance on dive time. Statistical parametric mapping 2-way repeated measures ANOVA was performed on the centre of mass (CoM) velocity, legs contributions, and contralateral power curves. It was found that the wider stance width required more contribution from the contralateral and less from the ipsilateral push-off, but this effect did not manifest in an improved …
Two-Dimensional Kinematics Differences Between Sexes In Runners With And Without Patellofemoral Pain, Ban Chuan Loh, Mei Yee Ho, Muhammad Nur Shahril Iskandar, Pui Wah Kong
Two-Dimensional Kinematics Differences Between Sexes In Runners With And Without Patellofemoral Pain, Ban Chuan Loh, Mei Yee Ho, Muhammad Nur Shahril Iskandar, Pui Wah Kong
ISBS Proceedings Archive
Patellofemoral pain (PFP) is a common injury in runners, especially females, but it is unclear if the kinematic risk factors between the sexes are the same. This study aimed to identify the kinematics of healthy and injured recreational runners with PFP in both sexes. High-speed videos of treadmill running gait in 56 subjects (14 in each injured and non-injured male and female group) were analysed using the Kinovea software. Three kinematic variables associated with PFP were extracted at midstance: knee midstance position, knee flexion angle, and hip adduction angle. Compared with healthy controls, injured females ran with knees more medially …
Masterful Defense Vs. Rookie Fumbles: How Do Expert Air Hockey Champs On Mobile Reveal Their Skills Through Posture And Touch?, Pooya Soltani, Antoine H. P. Morice
Masterful Defense Vs. Rookie Fumbles: How Do Expert Air Hockey Champs On Mobile Reveal Their Skills Through Posture And Touch?, Pooya Soltani, Antoine H. P. Morice
ISBS Proceedings Archive
We explored the relationships between expertise, in-game performance, posture, and screen interactions in mobile sports games. Twenty participants (10 experienced) played Disc-O, a turn-based air hockey game. Posture, phone holding style, play style, and screen metrics (displacement, velocity, touch size, pressure, and time to action) were compared. No significant associations were found between experience or performance and handedness, posture, holding style, or play style (p > 0.05). Experienced players performed better (p = 0.02) but showed no significant screen interaction differences compared to novices (p > 0.05). They reacted faster, with victors having smaller touch points, suggesting more …
The Effects Of 8 Weeks Core Combined Lower Limb Strength Training On Adolescent Swimmers' Medley Turning Technique, Kaiyang Sun, Dandan Pan, Yaqian Qi, Fengjie Xu
The Effects Of 8 Weeks Core Combined Lower Limb Strength Training On Adolescent Swimmers' Medley Turning Technique, Kaiyang Sun, Dandan Pan, Yaqian Qi, Fengjie Xu
ISBS Proceedings Archive
This study aimed to explore the effects of core combined lower limb strength training on medley turning technique of adolescent swimmers. Ten adolescent swimmers completed the trunk extensor and flexor endurance tests, squat jump test and 200m individual medley race before and after the 8 weeks training. The time of extensor and flexor endurance, jump height, and the maximal acceleration in swimming turns had significantly increased after training. The -5 m to 5 m times, the tuck times, and the hip and knee joint angles had significantly decreased after training. Eight weeks core combined lower limb strength training can improve …
Effects Of Extended Reality On Biomechanics And Rehabilitation In The Context Of Acl Injuries: A Comprehensive Review, Katja Magdalena Osterwald, Gerda Strutzenberger, Christian Fink
Effects Of Extended Reality On Biomechanics And Rehabilitation In The Context Of Acl Injuries: A Comprehensive Review, Katja Magdalena Osterwald, Gerda Strutzenberger, Christian Fink
ISBS Proceedings Archive
The review investigated Extended Reality (XR) applications in anterior cruciate ligament (ACL) injury risk screening and rehabilitation. Among 1135 studies, four met inclusion criteria. XR environments were investigated for their impact on knee biomechanics, attention, and proprioception. Findings revealed significant alterations in knee biomechanics induced by XR environments, including increased peak vertical ground reaction force and stiffer landings. XR immersion demonstrated altered movement strategies, hinting at potential distractions. While movements in XR and real environments were generally comparable, caution in approach velocity and differences in peak flexion angles suggested participant adaptations to virtual scenarios. While promising, further research is crucial …
Useful Kicking Foot Behavior Of Soccer Instep Kicking To Launch The Ball In Various Directions, Koichiro Inoue, Hiroyuki Nunome Prof.
Useful Kicking Foot Behavior Of Soccer Instep Kicking To Launch The Ball In Various Directions, Koichiro Inoue, Hiroyuki Nunome Prof.
ISBS Proceedings Archive
The present study aims to illustrate the distinct characteristics of foot motion at ball impact, manipulating various ball launch directions. Seven experienced male university players conducted a total of 126 trials of soccer instep kicking, targeting three areas of the soccer goal. Three ultra-high-speed cameras recorded the ball impact aspect at 2000 Hz. We computed the foot contact point, the foot instep direction, and the foot swing direction. The multiple regression model demonstrated that the variance of ball launch directions was explained significantly by the foot contact point and the foot instep direction, while the foot swing direction was not. …
A Practice-Oriented Teaching Strategy Involving Bouldering Improves Students’ Academic Understanding Of Mechanics, Xiao-Qi Zhang, Philip X. Fuchs, Jia Yi Chow, Chen-Fu Huang
A Practice-Oriented Teaching Strategy Involving Bouldering Improves Students’ Academic Understanding Of Mechanics, Xiao-Qi Zhang, Philip X. Fuchs, Jia Yi Chow, Chen-Fu Huang
ISBS Proceedings Archive
Practical experience is recommended in teaching to overcome students’ difficulties in learning and applying theoretical concepts such as Newtonian mechanics. The purpose of this study was to test whether incorporating bouldering in a biomechanics course improves students' academic understanding of mechanics. Twenty-one students participated in 10 weeks of traditional lecturing and a subsequent 4-week bouldering intervention. Using different versions of a validated biomechanics test, exam scores were higher after bouldering (73±15%) than before (53±21%) (Z=-3.783, p
The Effect Of Increasing Isometric Strength On Technique During The Front Foot Contact Phase In Elite Cricket Fast Bowlers, Paul Felton, Kevin Shine, Maurice Yeadon, Mark King
The Effect Of Increasing Isometric Strength On Technique During The Front Foot Contact Phase In Elite Cricket Fast Bowlers, Paul Felton, Kevin Shine, Maurice Yeadon, Mark King
ISBS Proceedings Archive
The study investigates the effect of increased isometric strength on technique in elite male cricket fast bowlers. A 16-segment forward-dynamics simulation model individualised to investigate optimal technique of the front foot contact phase of fast bowling for ten elite male bowlers was utilised. For each individualised model, isometric strength was increased by 5%, technique (initial body configuration and subsequent movement) re-optimised, and the differences between the original and strengthened optimal techniques analysed. Ball release speed increased by-1) with a delay in bowling arm circumduction the only technique difference observed. No differences were found when comparing kinetic parameters. This suggests isometric …
Influence Of Lean Body Mass Distribution On Ground Reaction Force And Snatch Performance In Male And Female Weightlifters, Wandasun Sihanath, Nayun Ahn, Paula Papanek, Kristof Kipp
Influence Of Lean Body Mass Distribution On Ground Reaction Force And Snatch Performance In Male And Female Weightlifters, Wandasun Sihanath, Nayun Ahn, Paula Papanek, Kristof Kipp
ISBS Proceedings Archive
The purpose of this study was to determine the influence of lean mass distribution (LMD) on ground reaction forces (GRF) and snatch performance. Eighteen weightlifters completed dual x-ray absorptiometry scans and performed heavy snatch lifts on force plates. Leg and trunk LMD were correlated with snatch performance, but further analysis revealed that only leg LMD was a significant predictor for male weightlifters. GRF during the first pull were associated with performance for male weightlifters, while GRF during the second pull were more relevant for female weightlifters. Leg LMD was a strong predictor of GRF during both pulls with an emphasis …
Load-Velocity Behavior During The First And Second Pull Of The Snatch And Clean, Emma L. Patterson, Nayun Ahn, Kristof Kipp
Load-Velocity Behavior During The First And Second Pull Of The Snatch And Clean, Emma L. Patterson, Nayun Ahn, Kristof Kipp
ISBS Proceedings Archive
The purpose of the study was to examine the effect of barbell load on the velocity during the first and second pull of the snatch and clean. Fifteen elite weightlifters (M= 6, F = 9) performed multiple repetitions of the snatch and clean at 75%-100% of their one-repetition max. Load-velocity (L-V) regression models were created for the first pull and second pull for each of the two lifts. The slopes of the L-V relationships were extracted from each model to determine how load affects each pull of the corresponding lifts. The results suggested that the L-V slopes for the snatch …
Examining The Sequencing Of Joint Velocities During Tennis Serves, Parunchaya Jamkrajang, Karl Newell, David Jessop, Hans Von Lieres Und Wilkau, Gareth Irwin
Examining The Sequencing Of Joint Velocities During Tennis Serves, Parunchaya Jamkrajang, Karl Newell, David Jessop, Hans Von Lieres Und Wilkau, Gareth Irwin
ISBS Proceedings Archive
This study examined the sequencing of the euclidian joint velocity and joint angular velocity when performing the tennis serve at the individual level. 10 International level players (male and female) performed 40 maximum serves to 4 target locations. A motion capture system recorded the kinematics of the service action (200 Hz). A descriptive analysis demonstrated sequencing of the euclidian joint velocity and the joint angular velocity, changed as a function of service position. The results showed the same pattern from the highest to lowest order: peak wrist, elbow, shoulder, and hip for the euclidian joint velocity and joint angular velocity, …
Exploring Knee Biomechanics In Defensive Sports: A Comparative Study Of Forward And Backpedal Sidestep Cuts With And Without A Knee Brace, Taliah Carlson, Zachary Jenkins, Joshua T. Weinhandl
Exploring Knee Biomechanics In Defensive Sports: A Comparative Study Of Forward And Backpedal Sidestep Cuts With And Without A Knee Brace, Taliah Carlson, Zachary Jenkins, Joshua T. Weinhandl
ISBS Proceedings Archive
Cutting, a key movement in dynamic sports, is associated with increased anterior cruciate ligament injuries. The influence of knee braces, commonly used for injury prevention, on knee mechanics requires further analysis. The purpose of this study was to examine the impact of knee braces on knee biomechanics during forward and backpedal cutting. Ten healthy males performed forward and backpedal cutting tasks, with and without a dual-hinged brace, simulating offensive and defensive movements. Compared to forward cuts, backpedal cuts showed increased knee flexion and decreased abduction and internal rotation. Knee internal extension moments and adduction moments increased, while knee internal rotation …
Markerless Biomechanical Analysis Of Former Elite Rhythmic Gymnasts, Natalie Mendelson, Tomer Yona, Smadar Peleg, Ophir Ravina, Arielle Fischer
Markerless Biomechanical Analysis Of Former Elite Rhythmic Gymnasts, Natalie Mendelson, Tomer Yona, Smadar Peleg, Ophir Ravina, Arielle Fischer
ISBS Proceedings Archive
This study addresses the critical gap in understanding the biomechanics of key rhythmic gymnastics elements with high loads on the feet and ankles, specifically Fouetté balance and turns. These elements require repeated plantar and dorsiflexion movements. The study analyzed the forces and ankle sagittal angles of four former elite gymnasts using markerless motion capture and force plates. We segmented each movement into distinct biomechanical phases, particularly in 'Relevé' and Plié positions. Higher forces were observed during the Fouetté turn, and higher plantarflexion angles were found during the Fouetté balance. To the authors best knowledge this is the first study to …
“Super-Shoes” In Distance Running: Is There A Possible Downside In Trained Women?, Max R. Paquette, Eduardo Martinez
“Super-Shoes” In Distance Running: Is There A Possible Downside In Trained Women?, Max R. Paquette, Eduardo Martinez
ISBS Proceedings Archive
Although “super-shoes” provide a metabolic advantage, anecdotal suggest that consistent wear may contribute to development of knee and hip overuse injuries. The purpose of this study was to compare these injury-related running biomechanics variables between “super-shoes” and traditional training shoes in female distance runners. 18 competitive female runners ran for 5min on a treadmill at 3.6 m/s in “super-shoes” (SUPER) and control shoes (CON) while 3D kinematic and ground reaction force data were collected. Peak knee abduction moment and peak hip internal rotation and abduction moment were larger in SUPER compared to CON but no other biomechanical variables were different …
Ai-Based Markerless Single-Camera Motion Analysis For Estimating Knee And Hip Joint Kinematics During Gait, Michael Schwenk, Philipp Barzyk, Alina Boden, Daniel Seebacher, Philip Zimmermann, Manuel Stein, Markus Gruber
Ai-Based Markerless Single-Camera Motion Analysis For Estimating Knee And Hip Joint Kinematics During Gait, Michael Schwenk, Philipp Barzyk, Alina Boden, Daniel Seebacher, Philip Zimmermann, Manuel Stein, Markus Gruber
ISBS Proceedings Archive
This study aimed to pilot-test a markerless motion analysis approach (i.e., SMARTGAIT) for estimating knee and hip joint kinematics in the sagittal and frontal plane during overground walking. One person (age 24 years) walked four times over an 8-meter distance. Joint kinematics were measured using SMARTGAIT (single RGB smartphone camera) and Vicon (reference system). Angle trajectories of sixteen gait cycles were used for the analysis. Agreement between SMARTGAIT and Vicon angle trajectories was greater in the sagittal plane (hip: Pearson’s r=0.989; knee: r=0.990; root mean square error [RMSE] ≤2.6 deg) compared to the frontal plane (hip: r=0.789; knee: r=0.793; RMSE …
The Effects Of Restricting Thorax Motion During Fixed-Seat Ergometer Rowing, Cecilia Severin, Danise Bentivoglio, Laura Gastaldi, Gertjan Ettema, Jørgen Danielsen
The Effects Of Restricting Thorax Motion During Fixed-Seat Ergometer Rowing, Cecilia Severin, Danise Bentivoglio, Laura Gastaldi, Gertjan Ettema, Jørgen Danielsen
ISBS Proceedings Archive
This study assessed the biomechanical effects of restricted thorax motion during fixed-seat ergometer rowing. Eleven able-bodied participants performed 2 bouts of 4 minutes of submaximal rowing on a custom-made fixed seat. First, the participants were strapped at the waist, allowing thorax motion (“Free thorax”), then strapped around the chest, preventing thorax motion (“Fixed thorax”). Kinematic analysis and force exerted on the ergometer chain were recorded. The “Fixed thorax” setup had lower total power output (p=0.011, Cohen’s d=1.61), total average joint power (p=0.006, Cohen’s D d=1.32) and VO2 (p=0.005, Cohen’s d=2.00). No differences existed in the elbow and shoulder power …
Differences In Rugby Place Kicking Technique And Performance Between Youth And Senior Players, Jesse Gilham, Alexandra Atack, Jamie North, Ryan Mahaffey
Differences In Rugby Place Kicking Technique And Performance Between Youth And Senior Players, Jesse Gilham, Alexandra Atack, Jamie North, Ryan Mahaffey
ISBS Proceedings Archive
The purpose of this study was to present normative place kicking data for youth players and compare them to senior players. Ten male players (seven youth, three senior) performed supra-maximal range place kicks on an outdoor, grass pitch. Ball trajectory was tracked to determine performance, and lower-body and torso kinematic data were analysed using XSens IMUs for each kicker’s three longest attempts. Youth and senior kickers achieved comparable kick distances. No differences were seen in kicking leg kinematics between groups, however, youth kickers demonstrated greater stance knee extension and greater centre of mass deceleration (mean differences: 4.8° and 0.51 m/s …
The Effect Of Touchdown Kinematics On Forward Acceleration In The Skeleton Push Start, Marvin Zedler, Celina Schenk, Bjoern Braunstein, Wolfgang Potthast, Jan Goldmann
The Effect Of Touchdown Kinematics On Forward Acceleration In The Skeleton Push Start, Marvin Zedler, Celina Schenk, Bjoern Braunstein, Wolfgang Potthast, Jan Goldmann
ISBS Proceedings Archive
Producing forward acceleration in a bent-over position while pushing a sled is poorly understood. Therefore, the purpose of this study was to investigate body and segment orientation of 16 elite skeleton athletes for the ground contacts 1 to 3 after the start and after 15 m as well as to quantify their relation to forward acceleration. Kinematic and kinetic data were recorded indoor on an athletics track whilst the athletes were pushing a sled dummy along guiding rails. Trunk and thigh orientation remained similar during the acceleration phase, while changes in touchdown kinematics originated from the shank and foot segment. …
Do Female Weightlifters Snatch Differently? Analysis Of Barbell Kinematics Using Statistical Parametric Mapping, Ingo Sandau, Andrea Rudloff
Do Female Weightlifters Snatch Differently? Analysis Of Barbell Kinematics Using Statistical Parametric Mapping, Ingo Sandau, Andrea Rudloff
ISBS Proceedings Archive
This study aimed to analyse gender differences in barbell kinematics of the snatch in international elite weightlifters. At the 2019 Senior World Championships, horizontal and vertical barbell kinematics of the 1RM snatch lifts of the top 5 female and male weightlifters of all 10 body weight categories were assessed using two-dimensional video analysis (50 Hz). Gender differences were analysed for kinematic time series data using statistical parametric mapping. Results revealed almost similar mean snatch barbell trajectory and velocity pattern for female compared to male weightlifters. Significant differences were detected during the 1st pull with lower barbell distance and velocity. However, …
Power Up The Swing: A Biomechanical Study Towards A Golf Exosuit, Alireza Nasirzadeh, Song Min Lee, Jihye Jang, Nakwon Ko, Kim Jin Hee, Yong Ung Kwon, Giuk Lee
Power Up The Swing: A Biomechanical Study Towards A Golf Exosuit, Alireza Nasirzadeh, Song Min Lee, Jihye Jang, Nakwon Ko, Kim Jin Hee, Yong Ung Kwon, Giuk Lee
ISBS Proceedings Archive
This biomechanical study investigates the impact of a passive elastic exoband on golf swing performance, focusing on optimizing the timing and magnitude of its stretch to increase the clubhead velocity. We analyzed the performance of two professional golfers wearing the exoband in four configurations. Our findings suggest that pre-stretching the exoband during the backswing, coupled with an optimal X-factor, significantly increases clubhead velocity by efficiently releasing stored elastic energy. Notably, the configuration pulling the left posterior shoulder towards the left ASIS resulted in the highest clubhead velocity and greatest exoband contribution, demonstrating the importance of optimal stretch and energy transfer …
The Correlation Between Lumbopelvic Control And Pitching Velocity In Baseball Pitchers, Shiu-Min Wang, Wei-Li Hsu, Jyh-How Huang, Yuh-Renn Wu
The Correlation Between Lumbopelvic Control And Pitching Velocity In Baseball Pitchers, Shiu-Min Wang, Wei-Li Hsu, Jyh-How Huang, Yuh-Renn Wu
ISBS Proceedings Archive
The purpose of this study was to investigate the relationship between lumbopelvic control and pitching performance among baseball pitchers. Four baseball pitchers participated in this pilot study. Each participant underwent measurements for lumbopelvic control ability in static posture and dynamic movement, as well as pitching performance assessments. The results indicated a significant correlation between lumbopelvic control in the static posture of the stride leg and pitching velocity (Rs = -1.0, p < 0.01), as well as a significant correlation between lumbopelvic control in dynamic movement and pitching velocity (Rs = - 0.90, p = 0.04). Therefore, lumbopelvic control during pitching could play a pivotal role in enhancing pitching velocity. Coaches and practitioners should prioritize strategies aimed at improving these aspects to …
Analysing Gait Transition Dynamics In Uphill Trail Running From Wearable Devices, Raimundo Sanchez
Analysing Gait Transition Dynamics In Uphill Trail Running From Wearable Devices, Raimundo Sanchez
ISBS Proceedings Archive
This study investigates gait transition speed in trail running on uphill slopes using wearable devices data. It examines Preferred Transition Speed (PTS) and Heart Rate Optimal Transition Speed (HROTS), noting a decrease in both with increasing slope. This suggests an intuitive adaptation among athletes to lower speeds on steeper inclines, challenging the Iso-Efficient Speed concept and showing gait selection is influenced by more than energy efficiency. The analysis of data from 14 trail runners, aged 22-43 with at least one year of trail running experience, reveals distinct gait patterns characterized by a bimodal distribution in cadence and a unimodal distribution …
A Simple Jumping Landing Stability Errors System To Differentiate And Diagnose Chronic Ankle Instability, Zongchen Hou, Daniel D.P. Fong, Samantha L. Winter
A Simple Jumping Landing Stability Errors System To Differentiate And Diagnose Chronic Ankle Instability, Zongchen Hou, Daniel D.P. Fong, Samantha L. Winter
ISBS Proceedings Archive
This study investigates whether a simplified landing stability error system can differentiate individuals with chronic ankle instability (CAI). Fifteen CAI and fifteen healthy controls performed jumping landing tasks when instructed with the landing side before (planned) or after (unplanned) take-off. Landing errors were identified as the following criteria: (1) touching the ground with the free leg, (2) standing leg leaving the force plate after landing, (3) touching the ground with the hands, and (4) lateral deviation of sternum over hips. The CAI group had a higher total error (1.70±0.65 times/trial) compared to the normal group (0.89±0.58 times/trial), with a cut-off …