David Zahradník
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View article: Biomechanical insights into Achilles tendinopathy risk and protection in runners: a large prospective study 4HAIE
Biomechanical insights into Achilles tendinopathy risk and protection in runners: a large prospective study 4HAIE Open
Objective This study aimed to evaluate whether lower limb biomechanics in runners and non-runners are risk factors for the onset of Achilles tendinopathy, and to assess the contributions of age, sex, running distance and injury history to …
View article: Association between T2 relaxation time and biomechanical loading of the anterior cruciate ligament in healthy individuals
Association between T2 relaxation time and biomechanical loading of the anterior cruciate ligament in healthy individuals Open
Anterior cruciate ligament (ACL) injury is common in sports that include 'change in direction' tasks. The aim of the current study was to determine the association between T2 relaxation time (an indicator of ACL integrity) of the distal po…
View article: Running Distance and Biomechanical Risk Factors for Plantar Fasciitis: A 1-yr Prospective 4HAIE Cohort Study
Running Distance and Biomechanical Risk Factors for Plantar Fasciitis: A 1-yr Prospective 4HAIE Cohort Study Open
Introduction Plantar fasciitis (PF) is one of the most common running-related injuries. Purpose The aim of this prospective study was to determine the incidence of PF and identify potential risk or protective factors for PF in runners and …
View article: External Focus of Attention Reduces Cartilage Load During Drop Landings
External Focus of Attention Reduces Cartilage Load During Drop Landings Open
The aim of the present study was to examine the effects of attentional focus instructions on acute changes in the transverse relaxation time (T2) of the femorotibial cartilage and in cartilage volume during repeated drop‐jump landings. Ten…
View article: Strategies for a self-selected unanticipated change of direction maneuver and the risk for ACL injury
Strategies for a self-selected unanticipated change of direction maneuver and the risk for ACL injury Open
The purpose of the study was twofold: 1) to qualitatively investigate the different change of direction (COD) strategies used by females in an ecological situation; and 2) to evaluate the knee internal adduction moment and knee flexion dur…
View article: Upper limb biomechanical differences in volleyball spikes among young female players
Upper limb biomechanical differences in volleyball spikes among young female players Open
The performance assessment of relevant biomechanical factors is essential for appropriate age-related training progression in volleyball spike (VS). This study aimed to investigate the differences in upper limbs’ (a) range of motion (ROM),…
View article: External focus of attention enhances arm velocities during volleyball spike in young female players
External focus of attention enhances arm velocities during volleyball spike in young female players Open
The aim of this study was to investigate the effect of different volleyball-specific attentional focus instructions on arm velocities of a volleyball spike in young female volleyball players using the Statistical Parametric Mapping method.…
View article: The impact of the COVID-19 epidemic on the number of visitors in selected protected areas in the Czech Republic
The impact of the COVID-19 epidemic on the number of visitors in selected protected areas in the Czech Republic Open
Visitor monitoring has been taking place in many protected areas of the Czech Republic for many years.This provides nature conservationists with knowledge about the impact of visitors on the objects of protection of these areas.The 2020 CO…
View article: Running and Physical Activity in an Air-Polluted Environment: The Biomechanical and Musculoskeletal Protocol for a Prospective Cohort Study 4HAIE (Healthy Aging in Industrial Environment—Program 4)
Running and Physical Activity in an Air-Polluted Environment: The Biomechanical and Musculoskeletal Protocol for a Prospective Cohort Study 4HAIE (Healthy Aging in Industrial Environment—Program 4) Open
Far too little attention has been paid to health effects of air pollution and physical (in)activity on musculoskeletal health. The purpose of the Healthy aging in industrial environment study (4HAIE) is to investigate the potential impact …
View article: Peer Review #1 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.1)"
Peer Review #1 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.1)" Open
Volleyball is an exceedingly popular physical activity in the adolescent population, especially with females.The study objective was to assess the effect of volleyball training and natural ontogenetic development on the somatic parameters …
View article: Peer Review #2 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.1)"
Peer Review #2 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.1)" Open
Volleyball is an exceedingly popular physical activity in the adolescent population, especially with females.The study objective was to assess the effect of volleyball training and natural ontogenetic development on the somatic parameters …
View article: The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories
The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories Open
Volleyball is an exceedingly popular physical activity in the adolescent population, especially with females. The study objective was to assess the effect of volleyball training and natural ontogenetic development on the somatic parameters…
View article: Peer Review #1 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.2)"
Peer Review #1 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.2)" Open
Volleyball is an exceedingly popular physical activity in the adolescent population, especially with females.The study objective was to assess the effect of volleyball training and natural ontogenetic development on the somatic parameters …
View article: Peer Review #3 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.1)"
Peer Review #3 of "The effect of long-term volleyball training on the level of somatic parameters of female volleyball players in various age categories (v0.1)" Open
Volleyball is an exceedingly popular physical activity in the adolescent population, especially with females.The study objective was to assess the effect of volleyball training and natural ontogenetic development on the somatic parameters …
View article: Children’s Single-Leg Landing Movement Capability Analysis According to the Type of Sport Practiced
Children’s Single-Leg Landing Movement Capability Analysis According to the Type of Sport Practiced Open
(1) Background: Understanding children’s motor patterns in landing is important not only for sport performance but also to prevent lower limb injury. The purpose of this study was to analyze children’s lower limb joint angles and impact fo…
View article: Association between serve speed and court surface in tennis
Association between serve speed and court surface in tennis Open
The aim of the study was to determine whether the serve speed differs between Grand Slam tournaments (GSTs) played on different court surfaces. The study was carried out for both men and women (n=70–98) who participated in four of the GSTs…
View article: Kinematics of gait using bionic and hydraulic knee joints in transfemoral amputees
Kinematics of gait using bionic and hydraulic knee joints in transfemoral amputees Open
Background: The development of new technologies has led to further improvements in prosthetic knee joints. Objective: The aim of this study was to compare angle parameters in knee and hip joints during the gait of transfemoral amputees and…
View article: Technique Selection ‘the Coaches Challenge’ Influencing Injury Risk During the First Contact Hand of the Round off Skill in Female Gymnastics
Technique Selection ‘the Coaches Challenge’ Influencing Injury Risk During the First Contact Hand of the Round off Skill in Female Gymnastics Open
The importance of technique selection on elbow injury risk has been identified for the key round off skill in female gymnastics, with a focus on the second contact limb. The aim of this study was to shift the focus to the first contact lim…
View article: Do athletes alter their running mechanics after an Achilles tendon rupture?
Do athletes alter their running mechanics after an Achilles tendon rupture? Open
Background Over the past thirty years, there has been dramatic increase in incidence of Achilles tendon rupture in the athletic population. The purpose of this study was to compare the lower extremity mechanics of Achilles tendon ruptured …
View article: Effect of an Arm Swing on Countermovement Vertical Jump Performance in Elite Volleyball Players
Effect of an Arm Swing on Countermovement Vertical Jump Performance in Elite Volleyball Players Open
The aim of this study was to determine how elite volleyball players employed the arm swing (AS) to enhance their jump performance. The study assessed how the AS influenced the duration and magnitude of the vertical ground reaction force (V…