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Comparison Of Segmental Dynamics Between Soccer Side Volley Kick And Instep Kick, Tsuyoshi Iitake, Hiroyuki Nunome Prof.

ISBS Proceedings Archive

The present study aimed to clarify differences in segmental dynamics between the side-volley kick and the instep kick in soccer. Three-dimensional lower body motion (500 Hz) was captured during both types of kicks of twenty male soccer players. Joint angular velocities, resultant joint torque and interaction torque due to joint reaction forces of the kicking leg were computed using inverse dynamics. Statistical Parametric Mapping was used to compare these time-series changes. Despite the side-volley kick generating significantly smaller hip flexion torque than the instep kick, the hip joint angular velocity of the side-volley kick was comparable to that of the …

Plantar Fascia Stiffness Accounts For Individual Variance In Its Strain During Hopping At Different Frequencies In Females, Ayaka Hobo, Hiroto Shiotani, Kosuke Hirata, Hiyo Inaba, Natsuki Sado

ISBS Proceedings Archive

The plantar fascia (PF) behaves like a spring during bouncing gait, whereas its strain is a potential risk factor for plantar fasciitis. PF strain in bouncing gait is determined theoretically by complex foot dynamics, involving numerous active and passive foot structures, but the determinants of its individual variability remain unclear. Here we show the high relevance of PF stiffness to its strain in hopping by 11 females. PF stiffness, assessed as shear wave velocity, correlates with peak PF strain in hopping at different frequencies (1.8, 2.6, 3.4 Hz). The variance accounted for increases with increasing hopping frequency (from 49 to …

Assessing The Impact Reduction Capabilities Of Gamebreaker Softshell Headgear In Drop Tests, Annette G. Heward-Swale, George Stilwell, Nick Draper, Natalia Kabaliuk

ISBS Proceedings Archive

Softshell headgear is marketed to reduce head impact intensity in contact sports like rugby; however, evidence supporting this remains limited. This study investigated whether selected headgear models, GameBreaker-Pro, a novel GameBreaker-Prototype and a World Rugby (WR) Law 4 approved headgear, attenuate impact intensity under controlled drop test conditions. Peak linear acceleration (PLA), peak rotational acceleration (PRA), and peak rotational velocity (PRV) were measured on a Hybrid III headform fitted with this headgear. Drop tests were conducted from 15-60 cm at five head impact orientations. All headgear reduced impact kinematics relative to the bare headform. GameBreaker headgear achieved 14-22% greater reductions …

Interaction Between The Midsole And Plate In Running Shoes Modifies The Energy Strategy Of The Mtp Joint During Running, Soo-Ji Han, Jusung Lee, Sanghyuk Han, Seongjun Kim, Jongchul Park

ISBS Proceedings Archive

This study investigated biomechanical differences of the metatarsophalangeal (MTP) joint according to midsole materials (EVA, PEBA) and carbon plate insertion. Ten male runners performed overground running at 3.89 m/s (±5%) under four footwear conditions. Discrete outcome variables included active and critical stiffness (Kactive, Kcr), push-off time, peak propulsion force, and MTP power transition timing, while statistical nonparametric mapping (SnPM) was applied to joint power. PEBA without a plate did not provide a propulsion advantage but reduced energy loss and enabled more effective joint control than EVA. In contrast, the addition of a plate to EVA facilitated a faster roll-off with …

No Differences Between Males And Females In The Neural Control Of Explosive Contractions, Anna Grootenhuis, Fiona Hiereth, Jakob Škarabot, Marius Oßwald, Alessandro Del Vecchio, Markus Gruber, Luca Ruggiero Dr.

ISBS Proceedings Archive

Males and females exhibit comparable explosive relative to maximal strength. Given the greater proportion of type I fibres area in female muscles, motor units discharge rate (MUDR) in explosive efforts may be higher to compensate for slower contractile properties. To verify this, 22 females and 12 males (20-34 y), performed 10 rapid isometric ankle dorsiflexors, while recording high-density electromyography from tibialis anterior. Relative rate of torque development (RTD) measures (normalised to maximal torque) in the first 150 ms from contraction onset were not different (P > 0.07) between sexes, nor MUDR at the beginning of the explosive efforts (61 ± …

Validating A Markerless Motion Capture Application In Simultaed Snowboarding, Stuart Evans Dr, Christian Merz, Felix Friedl

ISBS Proceedings Archive

The purpose of the present pilot study was to validate the timing and position accuracy of the centre of mass (COM) during a replicative snowboarding training session using a previously validated motion capture system (Simi Motion®) and a mobile markerless monocular motion capture application (SPLYZA Motion). The positional timing of the two-dimensional (2D) COM motion between the two systems were validated in an indoor laboratory condition as two elite snowboarders performed three individual movements, namely a static (isometric) pose as a proxy method for ground truth validation followed by a vertical jump and a single rotation. The position of the …

Machine Learning And Deep Learning Applications In Sports Biomechanical Analysis: A Systematic Scoping Review Of Performance Enhancement And Injury Prevention Strategies, Wissem Dhahbi, Nidhal Jebabli, Manar Boujabli, Marouen Souaifi, Ismail Dergaa, Lamia Ben Ezzdine

ISBS Proceedings Archive

Aim: This scoping review systematically maps current trends in artificial intelligence applications for sports biomechanical analysis, examining performance enhancement and injury prevention utility, methodological approaches, implementation challenges, and ethical considerations. Methods: A comprehensive analysis synthesized evidence on AI methodologies applied to sports biomechanics across various contexts, including machine learning, neural networks, and deep learning approaches integrated with learning management systems. This review examined data collection modes, analytical approaches, and practical implementation in laboratory and field settings. Results: AI applications evolved from basic statistical modeling to sophisticated machine learning configurations, demonstrating superior performance in technique analysis (94% agreement with international judges), …

Changes In Walking Performance Under Dual Task Conditions Across Pregnancy – A Case Study, Nikola Chmura, Wanda Forczek-Karkosz

ISBS Proceedings Archive

In recent years there is a growing literature on the walking pattern during pregnancy in the context of preventing falls as pregnancy progresses (Błaszczyk et al. 2016). The study examines the impact of pregnancy on walking under dual-task conditions. A 27-year-old participant was assessed in her first and third trimester for gait parameters and cognitive function changes. Results showed slower walking speed, prolonged double support phase, and a wider base of support, especially when performing an additional task. The DIVA test revealed impaired attention and increased errors.Findings highlight the effect of cognitive load on stability in pregnant women, potentially increasing …

Trunk Kinematics In The Sliding Forehand On Clay Courts: A Comparison Of Elite And Sub-Elite Tennis Players, Kai-Lung Chang, Wen-Tzu Tang, Tsung-Yu Huang, Zi-Jun Lin, Cheng-Yi Hsiao

ISBS Proceedings Archive

This study compares the trunk kinematics of elite and sub-elite male tennis players during the sliding forehand stroke on clay courts. A total of 24 highly skilled players participated in this study. Their stroke execution was recorded using a 3D high-speed infrared motion capture system. Independent sample t-tests (p < 0.05) were used to compare trunk kinematics between groups. Elite players outperformed their sub-elite counterparts across all measured points, including greater right lateral bending at the Ground Contact and End Backswing points, enhanced anterior tilt at the Impact and Racket Extension points, and superior left lateral bending at the Completion of Swing point. Additionally, their greater maximum trunk displacement reflects superior trunk control and movement efficiency throughout the stroke sequence. This study underscores the importance of trunk rotational control and sliding techniques in optimizing forehand performance on clay courts.

Within-Session Variability In Treadmill Running Mechanics In Team Sport Athletes, Claire Chaisson, Brian Hanley, Dan Weaving, Stacey Emmonds

ISBS Proceedings Archive

This study investigated within-session variability in treadmill running mechanics during repeated same-day runs across multiple speeds, with a secondary aim to assess how these mechanics changed with speed. Eleven team sport athletes (9 M, 2 F; 25.0 ± 3.2 years) completed three trials of 30-s treadmill runs at 10, 12, 14, 16, 18 and 20 km/h. The coefficient of variation (CV%) for step length (2.7 to 1.7%, β = -0.10, p = 0.004) and flight time (7.9 to 4.3%, β = -0.41, p < 0.001) decreased with speed, indicating greater consistency. Step length (β = 0.068), step rate (β = 0.054), flight time (β = 3.69) and horizontal work (β = 0.026) increased with speed, and contact time (β = –9.86), duty factor (β = –0.008) and vertical work (β = –0.041) decreased. These findings suggest movement patterns become more consistent at higher speeds.

The Effects Of A Basketball Game-Based Warm-Up In Squat Jump Performance In Youth Students, Marco V. Campana Bonilla, Mansour N. Alsowayan

ISBS Proceedings Archive

The purpose of this study was to identify the effects of a basketball game-based warm-up (BGW) on squat jump (SJ) performance in youth students. 28 high school participants were included in this study. The participants performed a BGW and completed a SJ pre-test and post-test. A smartphone app was used to test and collect the jump height (JH), flight time (FT), velocity (Vel), force (F), and power (P), which was obtained and calculated using the take-off and landing points by the app from the video recorded taken from the SJ. Our findings showed significant differences for boys in FT (p …

Acl Injury-Related Kinematic Assessment: A Preliminary Study To Compare Marker-Based, Wearable, And Markerless Systems, Claudia Brunetti, Filippo Bertozzi, Pietro Maver, Marco Palombi, Matilde Santini, Manuela Galli, Marco Tarabini

ISBS Proceedings Archive

Anterior cruciate ligament (ACL) injuries often occur in non-contact situations, highlighting the need for effective risk assessment tools. This study compared kinematic outcomes of IMUs (Xsens), markerless (OpenCap) and an optoelectronic system (OMS) – considered the gold standard - in drop jumps with change of direction. Knee and hip sagittal and frontal plane kinematics were recorded concurrently with all three systems in a total of 260 trials. Xsens showed high validity for knee flexion (R²=0.81, RMSE2=0.00), limiting its use in ACL injury prevention research. OpenCap had weaker agreement with OMS (i.e., for knee flexion R²=0.76, RMSE=7.6°) …

Bridging The Gap Between Research And Practice: Integrating Biomechanical Analysis In The Development Of Landing Mats In Gymnastics., Pavel Brtva, Bethany Canty, Rebecca Straker, Gareth Irwin, Roman Farana

ISBS Proceedings Archive

This study examined variations in vertical ground reaction force (VGRF) and lower limb kinematics during landings on three different mat structures (TYPE1, TYPE2, TYPE3) compared to FIG mat in young unskilled (pupils) and gymnast’s female. Significant effects of mat type were observed for VGRF_max, time to VGRF_max, peak ankle and knee angles, and peak knee angular velocity. TYPE1 mats exhibited the highest VGRF and shortest time to peak, indicating inadequate force attenuation and potential injury risk. Gymnasts demonstrated lower VGRF_max and lower ankle flexion, likely due to landing technique. No significant differences between TYPE2, TYPE3, …

A Novel Pathway To Characterise Footballs For Finite Element Analysis, Megan J. Barnes-Wood, Henrique Ramos, Rafael Santiago, Peter Theobald

ISBS Proceedings Archive

This study developed a method to characterise materials used in football manufacture for finite element analysis. Quasi-static (0.1/s) and dynamic (10/s and 100/s) uniaxial testing on a FIFA Quality Programme approved football generated hyperelastic material coefficients. Dynamic mechanical analysis was utilised to create Prony series coefficients to inform the viscoelastic behaviour. The model was validated by comparing finite element simulations with experimental data, focusing on dynamic properties including coefficient of restitution, maximum deformation, and contact time. Results indicated a strong correlation, with RMSE between 0.0051 and 10.4310, particularly at 0.8 bar pressure, demonstrating the model’s efficacy for high-strain impacts. This …

The Effect Of The Eyes-Closed Condition On Muscle Activation, Ground Reaction Force, And 3d Kinematics In Countermovement Jumps, Nada Juma Aldous, Paul Grimshaw

ISBS Proceedings Archive

This study investigates the effects of the eyes-closed condition on lower limb muscle activation, ground reaction force, and three-dimensional kinematics during repeated countermovement jumps in healthy young male adults. Data were collected in a controlled laboratory setting using a force platform, 3D motion capture, and wireless electromyography. The results offer insight into the interplay between sensory re-weighting and motor control under altered visual conditions. While key performance parameters remain largely consistent between eyes-open and eyes-closed trials, subtle differences in joint kinematics suggest compensatory adaptations may occur. These findings contribute to a better understanding of sensory integration in dynamic motor tasks …

Velocity-Based Training Intervention: Effects On Lower Limb Performance In Female Floorball Athletes, Basil Achermann, Naire Regazzi, Rahel Heynen, Julia Suter, Silvio Lorenzetti

ISBS Proceedings Archive

This study investigated the effects of a six-week velocity-based training (VBT) program in female floorball players. The intervention, focused on back squats and trap bar deadlifts. Key performance metrics included movement velocity of RT exercises, sprint speed, jump performance, stop-and-go (SAG) performance, and load-velocity profiles (LVP). Seventeen participants completed 12 training sessions divided into strength (Sessions 1–6) and power (Sessions 7–12) blocks. Significant improvements were observed in VBT metrics, with squat estimated 1RM increasing by 15.3% (from 1.60 to 1.85) and deadlift estimated 1RM by 5.9% (from 1.76 to 1.87), while mean concentric velocity rose by 7.5% in the squat …

Isbs 2025 Conference Proceedings, Rony Ibrahim, Paul Grimshaw, Lina Majed, Philip Graham-Smith

ISBS Proceedings Archive

These are the proceedings of the 43rd Conference of the International Society of Biomechanics in Sport

Working With The Irs: Irs’S Revenue Agent, Richard P. Vinal

Tax Adviser

No abstract provided.

Tax Trends, Harry Z. Garian

Tax Adviser

No abstract provided.

Estate Planning: How To Break Joint Ownership Of Real Estate Without Gift Tax, Byrle M. Abbin

Tax Adviser

No abstract provided.

Scientific Characterization Of Historic Mortars Dating From The 15th-Century Of A Historical Building In Algeria: A Case Study, M. E. Belgacem, N. Rabahi-Touloum, R. Neves, Y. Ouldkhaoua

Journal of Sustainable Construction Materials and Technologies

This research investigates the historic mortars (Aggregate/Binder (A/B) ratio) of a historical patrimony building, dating from the 15th century, in Algeria, for restoration purposes. It is well known that thorough characterization is essential for successful restoration. To this end, several techniques, including Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and X-ray Fluorescence (XRF), optical microscope were used to characterize the historic mortars. A mechanical test was used to characterize the compressive strength of a historic mortar. For a comprehensive characterization, A/B ratios were estimated using both Digital Image Analyses (DIA) and chemical analyses. The results obtained provided clear information on …

Resonant Breathwork As Multimodal Vagal–Interoceptive Modulation: An Empirical Synthesis Of Non-Invasive Vns, Breathing-Driven Interoception And Respiratory Tools, Piper Hutson, James Hutson

Faculty Scholarship

Resonant Breathwork is proposed as a layered, measurable intervention that modulates vagal activity and interoceptive processing through acoustic vocalization, respiratory mechanics, and biofeedback. This review synthesizes human empirical studies from 2022–2025 across five domains: (1) noninvasive transcutaneous auricular vagus nerve stimulation and acoustic or vocal vagal engagement; (2) interoception targets modulated by breathing; (3) respiratory rehabilitation tools, including oscillatory positive expiratory pressure and inspiratory muscle training; (4) virtual or augmented reality breath biofeedback; and (5) neuroimaging of high ventilation breathwork with music. Evidence shows taVNS can acutely increase vagal indices, with effects contingent on frequency and pulse width, while paced …

Nebline, November/December 2025

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Contents

Nebraska Extension celebrates 25 years of nutrition school enrichment kits

Recipe of the month: Fruit & yogurt parfait

Celebrating the season with American persimmon by Rachel Anderson

Love gardening? Become a master gardener by Mary Jane Frogge

Extension master gardener volunteer spotlight: Carol Rustad

Garden guide: Things to do this month by Mary Jane Frogge

Choosing child care: What parents should know by Jaci Foged

Commercial/noncommercial pesticide license

Little black bugs, big bite by Kait Chapman [about pirate bugs]

What you need to know about having a well drilled by Becky Schuerman

2026 nebraska custom rates survey by Glennis …

Peaks Island Star : November 2025, Vol. 45, Issue 11, Service Agencies Of The Island

Peaks Island Star, 2025

The Peaks Island Star is the newsletter of the island's service agencies and other community news.

The Relationship Between Sex Guilt And Sex Anxiety On Sexual Function In Sexually Active Adult Women, Mia Audina Olivia, Ahmad Naufalul Umam

Papers from the International Association for Cross-Cultural Psychology Conferences

Sexuality is a deeply ingrained aspect of human identity and experience, and its importance can vary greatly from person to person and across different cultures and contexts. There is a widely accepted perspective in sexual behavior research that western women have more flexible sexual norms and thus function better than women from eastern cultural background. Meanwhile, research in eastern countries often only focused on health matters and bounded to abstinence-centred moral value. This study addresses this gap by investigating the intricate relationship between sex guilt, sex anxiety, and sexual function among sexually active adult women in Indonesia. A sample of …

#Willsmith: Text Analyses Of X Posts About The Oscar Slap, Merrisa Lin, Nairán Ramírez-Esparza

Papers from the International Association for Cross-Cultural Psychology Conferences

Social media users share their thoughts on social events, offering insights into the sociocultural climate. Since language reflects related culture, analyzing social media discussions in different languages provides a window into the sociocultural context. In this exploratory study, we examined English and Spanish posts related to the Oscar Slap, which sparked race and gender discussions. We analyzed X posts with #willsmith hashtag in English (N = 28,717) and in Spanish (N = 4,251). The Meaning Extraction Method automated text analyses revealed three similar themes across language cultures, a theme specific to English posts, and two themes unique to Spanish posts. …

Home Based Elder Care (Hbec) In India: Exploring Culturally Competent Models, Urmi Nanda Biswas

Papers from the International Association for Cross-Cultural Psychology Conferences

The chapter deliberates on elder care models within the sociocultural context of India, aligning with traditional values and family structure. The chapter is based on mini-case studies of 47 healthcare organizations that offer various types of care services to the aging population and extends to discuss a few of the upcoming models. Key informant interviews were conducted across different types of organisations studied involving the CEO/manager / proprietors, paramedical staff, and the seniors availing the services of the organisation. Apart from this focused group discussions of seniors in rural communities were also conducted. Structures of the organizations, along with the …

Factors Influencing Flourishing In Autoimmune Patients: A Systematic Review, Amherstia Pasca Rina, Endang R. Surjaningrum

Papers from the International Association for Cross-Cultural Psychology Conferences

This scoping literature review aimed to identify factors that influence flourishing and to synthesize gaps in previous studies that flourishing is not only influenced by the internal factor but how the social conditions individuals live in can also affect flourishing. Autoimmune diseases are incurable and associated with mental health conditions that can exacerbate the intensity of recurrence, so it is necessary to take protective measures, namely flourishing as a form of behavioral management of chronic diseases. The prevalence of autoimmune patients who are declared flourishing is relatively small, but flourishing is actually a psychological concept that is needed by everyone …

Home Care Workers, Immigration, And An Aging Population, Catherine Ipsen, Luke Santore

Employment

The size of the Home Care Worker (HCW) workforce has not kept pace with demand, and inadequate compensation and benefits have historically contributed to poor HCW recruitment and retention. Demographic trends put further strain on the workforce, with immigrants, naturalized citizens, and Black and Indigenous People of Color (BIPOC) individuals currently making up the majority of the HCW workforce.

Policy changes, cuts to benefits, and immigration crackdowns threaten to further weaken the supply of HCWs while the demand continues to rise. In this report, Catherine Ipsen and Luke Santore provide analysis and strategies to support HCWs and strengthen the Personal …

Salvadora Persica’S Effects On Oral Microbiota And Possible Pathophysiological Links To Type Ii Diabetes Mellitus Risk Factors, Ahmed Bahieldin, Heba J. Sabbagh, Mohammed H Alshehri, Abdullah M. Algarni, Naif Aljahdali, Ibrahim M. Asir, Khalid Mohammed Alzahrani, Awad S. Almhwary, Fatemah Saleh Alzaghabi, Abdullah Jaber Alsahafi, Amjed S Alshehri, Ali Ahmed Alzahrani, Faisal M. Alotaibi, Mohammed A. Alghamdi, Abdulwahab S. Almutairi, Sherif Edris

The Journal of King Abdulaziz University: Science

The application of Miswak (Salvadora persica) in healthy children was investigated to identify the oral microbiota associated with risk factors for type II diabetes mellitus (T2DM). Deep sequencing of the bacterial 16S rDNA V3–V4 regions was conducted on oral microbiome samples obtained prior to and following swaking. The KEGG database and PICRUSt analysis indicated that swaking affected functional pathways, resulting in an enrichment of transport pathways and a decrease in the risk factor associated with the T2DM pathway. Seven operational taxonomic units (OTUs), comprising the uncharacterized species Prevotella, Atopobium, Actinomyces, Lactobacillus, Neisseria bacilliformis, Actinomycetaceae, …