Yaodong Gu

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Verified

Yaodong verified their affiliation via an institutional email.

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• PhD
• Professor (Full) at Ningbo University

The scissor jump (SKJ) is vital in badminton, particularly for backcourt shots, but fatigue increases lower limb load and injury risk. This study investigates how quadriceps fatigue affects biomechanical characteristics and load during SKJ landing, aiming to understand its impact on injury risk. This study involved 27 amateur male badminton players...

Aging and COVID- 19 are known to influence DNA methylation, potentially affecting the rate of aging and the risk of disease. The physiological functions of 54 volunteers—including maximal oxygen uptake (VO₂ max), grip strength, and vertical jump—were assessed just before the COVID- 19 pandemic and again 3 years later. Of these volunteers, 27 had co...

Background As whether the positive effects of physical activity on mortality outweigh the negative effects of exposure to pollution is still under debate, we conducted a systematic review and meta-analysis on the risk of mortality for combined exposure to physical activity and air pollution. Methods PubMed, Cochrane, Embase and ScienceDirect datab...

The purpose of this study is to restore the before fracture kinematic state by using the observed foot bone displacements as boundary conditions for finite element (FE) analysis. Secondly, this study aims to compare the biomechanical changes of the foot before and after a metatarsal (MT) fracture using this method. A total of 21 subjects had previo...

Background: Soccer is a high-intensity sport characterized by a considerable incidence of injuries, particularly among professional male players, with injury rates ranging from 5.9 to 9.6 per 1000 player-hours. Lower limb injuries, including those affecting the knee, ankle, hip/groin, and hamstring muscles, are particularly prevalent. Additionally,...

Background: Ankle sprains are very common in badminton, and chronic ankle instability (CAI) often develops in players after these injuries. CAI badminton players (CAIBP) are more susceptible to injuries during high-intensity tasks, such as jumping landings, due to decreased ankle stability. This study aims to explore the variations in lower limb bi...

Lower limb asymmetry associated with running can reveal relevant information about sports injuries. Although the biomechanical study of bionic shoes (BS) has developed well, the understanding of how BS affects lower limb asymmetry during running is limited. The objective of this study was to compare the asymmetry between the dominant and non-domina...

Currently, limited information is available on the influence of quadriceps femoris muscle–tendon unit morphological parameters on mechanical efficiency; therefore, the aim of this study was to investigate the interaction between these variables. The morphological characteristics of the quadriceps femoris muscle–tendon unit of nine healthy females (...

目的 探究足底筋膜刚度与绞盘机制之间的关系以及对足弓的影响,为足底筋膜及足弓相关疾病提供生物力学机制解释。方法 构建跖趾关节屈曲角度为30°足-板模型,采用肌骨建模联合三维有限元分析方法,结合双平面荧光立体骨透视运动分析系统(dual fluoroscopic imaging system, DFIS) 获取5 km/ h 速度走路状态下足部的动态数据,对有限元模型进行验证,探究足底筋膜刚度对绞盘机制及足弓相关力学参数的影响。结果 有限元模拟分析结果与DFIS 获取的足部数据呈现高度一致性,证实了模型的有效性。随着足底筋膜刚度增加,绞盘效应与足纵弓刚度均呈增加趋势,但跖趾关节屈曲角度减小,足底筋膜远端应力逐渐减小,近端应力增大;足底筋膜刚度在25% ~150% ,足横弓宽度随足底筋膜刚度增大...

This observational study investigates the stress distribution in knee joint structures, specifically focusing on the meniscus and primary ligaments of the supporting leg during the support phase of a maximal-effort soccer instep kick executed by an elite-level player. Understanding these stress patterns is crucial for injury prevention and enhancin...

Traditional methods for collecting ground reaction forces (GRFs) mainly use lab force plates. Previous research broke this pattern by predicting GRFs with deep learning and data from IMUs like joint acceleration. Joint angle, as a geometric, is easier to collect than acceleration outdoors with cameras. LSTM is one of the deep learning models that h...

Foot torsion stiffness refers to the foot’ s ability to resist deformation when subjected to twisting forces, and such characteristics play a crucial role in preventing sports injuries and informing the design of athletic footwear. This review systematically summarizes the biomechanical research progress of foot torsion and shoe torsion, as well as...

Different shapes of carbon-fiber plates (CFPs) are likely to affect lower limb biomechanics, particularly under conditions of running-induced fatigue, and potentially impact runners’ performance and risk of injury. However, no studies have yet elucidated the precise effects of CFP shapes on the lower limb biomechanical characteristics subsequent to...

Biomechanical asymmetries between children’s left and right feet can affect stability and coordination, especially during dynamic movements. This study aimed to examine plantar pressure distribution, foot balance, and center of pressure (COP) trajectories in children during walking, running, and turning activities to understand how different moveme...

Step width is a critical factor influencing lower limb biomechanics during running, significantly affecting stability, performance, and injury risk. Understanding these effects is essential for optimizing running performance and minimizing injury risk. This study evaluated the effects of varying step widths on lower limb biomechanics at different r...

BACKGROUND: Squat exercises have been widely employed in fitness, rehabilitation, sports performance, and strength training under either free weight or weight-bearing conditions. OBJECTIVES: To report the evidence regarding the core contribution of biomechanical changes in the trunk and lower limbs of physical practitioners. Performance outcomes fr...

This study compared male amateur basketball players with asymptomatic patellar tendon tendinopathy (ASYM) to healthy controls (CON) during simulated games to explore the differences in patellar tendon force (PTF) and related metrics. Data on kinematics, kinetics, and electromyography were collected from 24 participants, comprising 12 in the ASYM gr...

Background: Barbell squats are commonly used in strength training, but the anterior–posterior displacement of the Center of Mass (COM) may impair joint stability and increase injury risk. This study investigates the key factors influencing COM displacement during different squat modes.; Methods: This study recruited 15 male strength training enthus...

Lower limb biomechanics of chronic ankle instability (CAI) individuals has been widely investigated, but few have evaluated the internal foot mechanics in CAI. This study evaluated bone and soft tissue stress in CAI contrasted with copers and non-injured participants during a cutting task. Integrating scanned 3D foot shapes and free-form deformatio...

Individuals with chronic ankle instability (CAI) and copers typically exhibited aberrant landing kinematics. Altered kinematics might lead to changes in muscle loading, potentially affecting the energy demand of locomotion. Understanding alterations in muscle mechanics and energetics during landing could enhance the rehabilitation program design. T...

Knee joint position influences ankle torque, but it is unclear whether the soleus compensates to counteract the reductions in gastrocnemius output during knee-flexed versus knee-extended plantarflexions. Therefore, the purpose of this study was to determine the effects of knee joint position and plantarflexion contraction velocity on ankle plantarf...

Purpose The impacts of shoe stiffness on running biomechanics are well-documented, while the specific effects on the performance of biomechanically distinct groups such as novice runners and experienced runners are still largely unexplored. The study aimed to evaluate the biomechanical effects of different shoe longitudinal bending stiffness (adjus...

Objective: To examine performance and lower limb kinematics between participants with clear and unclear vision when performing a specifical submaximal jump. Measures include success rate, jump accuracy, and joint angle. Methods: 12 males, aged 22.2 ± 1.2 years, with moderate vision impairment (left vision: 0.12 ± 0.02, right vision: 0.13 ± 0.04) an...

Background: The ankle joint is among the most vulnerable areas for injuries during daily activities and sports. This study focuses on individuals with chronic ankle instability (CAI), comparing the biomechanical characteristics of the lower limb during side-step cutting under various conditions. The aim is to analyze the impact of kinesiology tape...

During pregnancy, women undergo significant physiological, hormonal, and biomechanical changes that influence their gait. The forward shift of the center of mass and increased joint loads often result in a "waddling gait," elevating the risk of falls. While gait changes during pregnancy have been documented, findings across studies remain inconsist...

In recent years' research, the scientific and clinical communities have shown increased interest in the differences between foot strike patterns due to their biomechanical implications and the associated injury risks. This review aims to investigate the biomechanical differences between habitual forefoot and rearfoot strike running. A literature se...

Ankle sprains are a common injury among athletes and the general population, with chronic ankle instability (CAI) being a frequent complication. CAI patients often display altered neuromuscular control adaptations. This study analyzed muscle synergy patterns in 20 CAI patients during anticipated and unanticipated landing tasks to understand their n...

Background: Knee-related injuries often result from poor movement patterns that destabilize the joint and increase stress on knee structures. Understanding the influence of foot positioning on knee biomechanics is critical for identifying high-risk movement patterns and preventing injuries. Methods: Twenty healthy male participants performed side-c...

Purpose Asymptomatic patellar tendon abnormality (APTA) is considered a precursor to patellar tendinopathy (PT), but its pathogenesis remains unclear, especially regarding changes in muscle coordination. Therefore, it is essential to explore the muscle synergy patterns in individuals with APTA. Methods This study recorded sEMG data during stop-jump...

The long jump is an athletic event that demands speed, power, force application, and balance, with each phase being critical to overall performance. However, previous research has neglected the limiting effect of the wedge pedals on ankle dorsiflexion range of motion. This cross-sectional study investigated biomechanical changes in the lower extrem...

Para swimmers categorized as S10 and S12 are of particular interest due to their disability grading being closest to that of able-bodied swimmers, making them an ideal group for investigating disparities in limb coordination patterns. This study aimed to investigate whether S10 and S12 para swimmers, whose disability grading for movement and visual...

In this work, we numerically and experimentally investigate the ballistic performance of thermoplastic polyurethane (TPU)/steel configurations against spherical projectiles. We chose TPU materials with high and low hardness values to form the impact-sustaining layer to investigate the ballistic performance of protective configurations. Experiments...

Purpose: This study's purpose is to investigate the midterm effects of alternative set configurations (cluster [CL] and rest redistribution [RR]) on lower-and upper-body neuromuscular capacities in female athletes. Method: Twenty team sport female athletes were randomly assigned to a CL (n = 10) or RR (RRG; n = 10) training group. The study protoco...

Introduction High-intensity interval training (HIIT) is an effective strategy for improving a variety of health and fitness outcomes within school settings. Incorporating HIIT into existing physical activity opportunities appears practically feasible, yet the process evaluation and effectiveness of this strategy needs to be further evaluated. There...

Purpose The imbalance of muscle strength indicators has a negative impact on players. Lower limb muscle imbalance can cause gait abnormalities and increase the risk of muscle injury or decreased performance in significantly asymmetrical situations. This study aims to assess the lower limb muscle imbalance and gait feature between the dominant and n...

Introduction People who are overweight following bariatric surgery (BS) often need physical exercise to help with body function. However, it is not known which exercise interventions are more effective in improving physical function. Methods PubMed, Web of Science, Embase, and Cochrane Library databases were systematically searched for randomized...

This study investigates the impact of quadriceps fatigue on lower limb biomechanics during the landing phase of a single-leg vertical jump (SLJ) in 25 amateur male basketball players from Ningbo University. Fatigue was induced through single-leg knee flexion and extension exercises until task failure. Kinematic and dynamic data were collected pre-f...

As academic demands increase, school-aged children and adolescents often carry heavy backpacks, impacting their posture and musculoskeletal health. This study examines how backpack carriage affects children’s gait, focusing on the influence of waist strap design. In this study, twelve children underwent biomechanical tests while walking and running...

Pregnancy induces various physiological adaptations to accommodate the growing fetus. Pregnant women commonly experience changes in gait, balance, and center of gravity, which may increase the risk of falls. This study investigates the effects of negative heel shoes on plantar pressure distribution during walking in third-trimester pregnant women....

Diabetic foot is a common complication in patients with diabetes, which can lead to plantar ulcers and even necessitate amputation. This study aims to utilize finite element analysis to simulate the offloading effects of 3D-printed insoles with various structures on plantar pressure and to explore the use of machine learning in providing optimal pl...

Gymnastics moves are complex and varied, needing precise technique and body coordination, which traditional biomechanics methods struggle to capture in detail. This study aims to look at and judge how well new motion capture and analysis technology works in gymnastics biomechanics. This study picks the kipping bar muscle up move and uses the IMU-ba...

Background: Patellofemoral pain syndrome (PFPS) is one of the most common causes of anterior knee pain encountered in the outpatient setting. The purpose of this study was to compare the lower limb biomechanical differences during anticipated and unanticipated side-cutting in athletes with PFPS. Methods: Fifteen male basketball players diagnosed wi...

Background PT (Patellar Tendinopathy) is a degenerative disorder of the tendons induced via extended overstretching or overuse of the tendons instead than usual inflammation. In the past, humans have centered on a number of strategies of treating PT such as ultrasound and surgical treatment. However, they did no longer genuinely consider the effect...

The surge in popularity of running has led to a multitude of designs in running shoe technology, notably, there is an increasing trend in toe spring elevation. However, the impact of this design on foot structures during running remains an essential exploration. To investigate the effects of toe spring on the foot during forefoot running, we employ...

目的：探究长跑前后足部生物力学改变对黑踇趾损伤风险的影响，揭示长跑致黑踇趾损伤的生物力学机制，基于黑踇趾损伤预防理念进行鞋头设计并验证其防护效果，为长跑黑踇趾损伤预防和防护跑鞋研究提供支撑。方法：选取10 名男性半职业马拉松跑者为受试者进行跑步测试，采集其跑前、5 km跑后即刻及10 km跑后即刻的足部形态特征、足部各区域温度、大踇趾主观舒适度以及足-鞋相对运动距离等参数，进行单因素重复测量方差分析，以揭示长跑致足部黑踇趾损伤的潜在生物力学机制。基于黑踇趾损伤生物力学机制进行鞋头抬高的防护跑鞋设计，其中原型跑鞋的鞋头高度为65.8 mm，长度为85.5 mm；防护跑鞋的鞋头高度为79.5 mm，长度为85.8 mm。采集跑鞋优化前后的大踇趾主观舒适度、大踇趾-鞋面接触力以及三维有限元模拟仿真...

Background: Single-leg landing (SL) is an essential technique in sports such as basketball, soccer, and volleyball, which is often associated with a high risk of knee-related injury. The ankle motion pattern plays a crucial role in absorbing the load shocks during SL, but the effect on the knee joint is not yet clear. This work aims to explore the...

Purpose The functional status of the ankle joint is critical during dynamic movements in high-intensity sports like basketball and volleyball, particularly when performing actions such as stopping jumps. Limited ankle dorsiflexion is associated with increased injury risk and biomechanical changes during stop-jump tasks. Therefore, this study aims t...

Previous research has primarily focused on evaluating the activity of individual muscles in dancers, often neglecting their synergistic interactions. Investigating the differences in lower limb muscle synergy during landing between dancers and healthy controls will contribute to a comprehensive understanding of their neuromuscular control patterns....

A member of the Phyllanthaceae family, Flueggea leucopyrus is a well-known plant in the tribal areas of Sri Lanka, India’s Shaurastra region, Australia, and Malaysia. This study provides information about Flueggea leucopyrus, a plant with a wide range of therapeutic uses in India. Different extracts from the leaves and roots of Flueggea leucopyrus...

Citation: Mayakrishnan, V.; Thirupathi, A.; Ramamoorthy, K.; Annadurai, K.; Prakasam, R.; Gu, Y.; Kim, C.Y.; Ramasamy, M.; Karimpanchola, H.; Kannappan, P.; et al. Chemical Composition Analysis and Assessment of Antioxidant and Anti-Inflammatory Activities of Crude Extract of Flueggea on Carrageenan-Induced Paw Edema in Wistar Albino Rats. Antioxid...

The intersection of biomedical and bioengineering technologies with sports monitoring and healthcare has recently emerged as a key area of innovation and research [...]

Introduction: The biomechanics associated with human running are affected by gender and speed. Knowledge regarding ground reaction force (GRF) at various running speeds is pivotal for the prevention of injuries related to running. This study aimed to investigate the gait pattern differences between males and females while running at different speed...

Background Step width is a spatial variable in the frontal plane, defined as the mediolateral distance between the heel (forefoot during sprinting) of bilateral feet at initial contact. Variations in step width may impact the lower limb biomechanics. This systematic review aimed to synthesize the published findings to determine the influence of acu...

Background Ankle sprains are prevalent in sports, often causing complex injuries to the lateral ligaments. Among these, anterior talofibular ligament (ATFL) injuries constitute 85%, and calcaneofibular ligament (CFL) injuries comprise 35%. Despite conservative treatment, some ankle sprain patients develop chronic lateral ankle instability (CLAI). T...

Background: Ankle sprains are prevalent in sports, often causing complex injuries to the lateral ligaments. Among these, anterior talofibular ligament (ATFL) injuries constitute 85%, and calcaneofibular ligament (CFL) injuries comprise 35%. Despite conservative treatment, some ankle sprain patients develop chronic lateral ankle instability (CLAI)....

Background: Ankle sprains are prevalent in sports, often causing complex injuries to the lateral ligaments. Among these, anterior talofibular ligament (ATFL) injuries constitute 85%, and calcaneofibular ligament (CFL) injuries comprise 35%. Despite conservative treatment, some ankle sprain patients develop chronic lateral ankle instability (CLAI)....

Background: Patients with chronic ankle instability (CAI) demonstrated altered movement patterns during unanticipated landing compared to coper patients. Understanding the effects of kinematics, dynamics and energetics on individual movement patterns during landing could enhance motor control strategies for patients with ankle sprains while avoidin...

(1) This study examined the impact of fatigue and unanticipated factors on knee biomechanics during sidestep cutting and lateral shuffling in female basketball players, assessing the potential for non-contact anterior cruciate ligament (ACL) injuries. (2) Twenty-four female basketball players underwent fatigue induction and unanticipated change of...

Flatfoot is characterized by the collapse of the medial longitudinal arch, eversion of the rearfoot and abduction of the loaded forefoot. Orthopedic insoles are the frequently recommended treatment to support the arch of the foot, adjust the structure of the foot, reduce pain, improve stability and new techniques have been applied to the design of...

Purpose. This study explores lower limb joint displacement differences during the stance phase and to examine the effects of limb dominance on asymmetry. A total of 32 healthy male amateur marathon runners were recruited (age: 35.33 ± 6.90 years, height: 174.17 ± 3.34 cm, weight: 63.92 ± 4.53 kg). The experiment employed a Vicon eight-camera motion...

Objective: Erectile dysfunction (ED) is a sexual disorder where sexual arousal/action fails to cause or maintain an erect penis. Based on ED statistics 2022-23, the ED worldwide incidence will increase from 152 million men in 1995 to 322 million men by the year 2025. ED can be treated with a variety of drugs and supplements available from medicatio...

Functional ankle instability arises from recurrent ankle sprains. Neuromuscular training is employed to enhance ankle stability in individuals who experience functional ankle instability. The study involved 24 male university students with functional ankle instability, undergoing ankle neuromuscular training on three surfaces. The OpenSim musculosk...

Background The plantar vault, comprising the transverse and longitudinal arches of the human foot, is essential for impact absorption, elastic energy storage, and propulsion. Recent research underscores the importance of the transverse arch, contributing over 40% to midfoot stiffness. This study aimed to quantify biomechanical responses in the ankl...

Previous research has predominantly focused on the biomechanical effects of anterior–posterior foot motion during running, with comparatively less attention given to medial–lateral foot motion and its impact on lower limb biomechanical characteristics. We recruited 18 healthy runners who wore five different types of running shoes: regular shoes (NS...

Background: The treatment options for third-trimester musculoskeletal issues are limited. This study aims to examine how heel height affects gait biomechanics and provides heel height recommendations for various musculoskeletal problems. Methods: Five third-trimester gravidas were recruited wearing uniform footwear with four heel heights (0 mm, 15...

Introduction High-intensity interval training (HIIT) is an effective strategy for improving a variety of health and fitness outcomes within the school settings. Incorporating HIIT into existing physical activity opportunities appears practically feasible, yet the process evaluation and effectiveness of this strategy needs to be further evaluated. T...

To determine the impact of active muscle on the dynamic response of a pilot’s neck during simulated emergency ejection, a detailed three-dimensional (3D) cervical spine (C0–T1) finite element (FE) model integrated with active muscles was constructed. Based on the Hill-type model characterising the muscle force activation mechanics, 13 major neck mu...

Background: Studies have investigated the effects of backpacks and their loadings on the physiological spinal curvature changes in school-aged children and adolescents across different anatomical planes of motion. However, the dose-response relationship between varying backpack weights and changes in spinal physiological curvature remains unclear d...

Background: During city running or marathon races, shifts in level ground and up-and-down slopes are regularly encountered, resulting in changes in lower limb biomechanics. The longitudinal bending stiffness of the running shoe affects the running performance. Purpose: This research aimed to investigate the biomechanical changes in the lower limbs...

Using a curved carbon-fiber plate (CFP) in running shoes may offer notable performance benefit over flat plates, yet there is a lack of research exploring the influence of CFP geometry on internal foot loading during running. The objective of this study was to investigate the effects of CFP mechanical characteristics on forefoot biomechanics in ter...

This review examines the correlation between plant-based diets and athletic performance, with a specific emphasis on the vital aspect of optimizing micronutrients for athletes. In light of the increasing prevalence of plant-based nutrition among athletes due to its perceived advantages in terms of health, ethics, and the environment, this study inv...

This study investigated the effects of aerobic exercise during recovery from eccentric contraction (EC) on muscular performance, oxidative stress, and inflammation. Nineteen male subjects between 18 and 29 years were divided into unexercised (control, n = 9) and exercised (n = 10) groups. Initially, the subjects performed EC as 3 sets until exhaust...