Chris Edmundson

Chris Edmundson
University of Central Lancashire | UCLAN · School of Sport & Health Sciences

PhD Sports Biomechanics, BSc (Hons) Sports Science

About

43
Publications
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Introduction
Aside from long-standing interest in how to increase force production my more recent areas of interest are the psychobiological aspects of: 1) Development of grit, resilience, and mental toughness and their effects on the ability to cope and thrive in sport and extreme environments. 2) The importance and benefits of entering and exploring arenas of fear, the unknown, the new, and the uncomfortable, and how the coach and leader can set-up appropriate environments for this to take place

Publications

Publications (43)
Article
Full-text available
This two-experiment study aimed to examine the effects of different habitual foot placement angles and also the effects of manipulating the foot placement angle on the kinetics, three-dimensional kinematics and muscle forces of the squat. In experiment 1, seventy lifters completed squats at 70% of their one repetition maximum using a self-preferred...
Article
This two-experiment study aimed to explore habitual and manipulated stance widths on squat biomechanics. In experiment one, 70 lifters completed back squats at 70%, 1 repetition maximum (1RM), and were split into groups (NARROW < 1.06 * greater trochanter width (GTW), MID 1.06–1.18 * GTW and WIDE > 1.37 * GTW) according to their self-selected stanc...
Article
Full-text available
Purpose This two-experiment study aimed to examine (1) the accuracy and reliability of repetitions-in-reserve and (2) using a randomized trial, the efficacy of repetition-in-reserve compared to traditional percentage-based training during a 4-week pre-season strength training block in elite rugby league players. Methods In experiment 1, participan...
Article
Full-text available
The aim of the current study was to examine the efficacy of resisted sled-based training compared to traditional unresisted sprint training in terms of mediating improvements in speed, agility and power during an 8-week period of in-season training in elite rugby league players. Participants were randomly separated into either resisted sled or trad...
Article
Full-text available
Purpose The aim of the current investigation was to comparatively examine the effects of knee wraps/sleeves on kinetics, three-dimensional kinematics and muscle forces during the barbell back squat. Methods Fifteen male lifters completed squats at 70% of their 1 repetition maximum, in four different conditions (nothing, competition knee wrap, trai...
Article
The current study aimed to explore the effects of different footwear on kinetics, kinematics and muscle forces during the barbell back squat in both male and female lifters using Bayesian modelling. Twelve male and twelve female lifters completed squats at 70% of their 1 repetition maximum, in four different footwear conditions (Adidas weightliftin...
Article
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The aim of this study is to compare vertical jump data obtained by two different measurement systems (Gyko accelerometer and Contact Mat) in order to assess the validity of the Gyko accelerometer as an alternative to the contact mat method. Ninety-six subjects (15.9 ± 1.4 years) performed a single Squat Jump (SJ), Countermovement Jump (CMJ) and Aba...
Article
Bentley, I, Sinclair, JK, Atkins, SJ, Metcalfe, J, and Edmundson, CJ. Effect of velocity-based loading on acceleration kinetics and kinematics during sled towing. J Strength Cond Res XX(X): 000-000, 2018-Sled towing (ST) provides an external load in the form of a sled towed using a shoulder or waist harness and cord behind the athlete. Loading stra...
Article
Objective: Iliac endofibrosis is a rare condition that may result in a reduction of blood flow to the lower extremity in young, otherwise healthy individuals. The data to inform everyday clinical management are weak and therefore a Delphi consensus methodology was used to explore areas of consensus and disagreement concerning the diagnosis and man...
Article
Full-text available
Background: A primary technique in the discipline of strength and conditioning the squat has two principal ‘back and front’ variants. Despite the physiological and strength benefits of the squat, the propensity for musculoskeletal injury is high. The current investigation examined the influence of the front and back squat variations on the load exp...
Article
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Soccer match-play is increasingly characterised by short, high-speed bursts reliant on the ability to accelerate. Performance is impaired after peak acceleration activity and during the second half and may compromise a player’s effectiveness. To date, information about repeated acceleration sequences is lacking but would provide further insight int...
Article
Resisted sprint training is performed in a horizontal direction, and involves similar muscles, velocities and ranges of motion (ROM) to those of normal sprinting. Generally, sleds are attached to the athletes via a lead (3m) and harness; the most common attachment points are the shoulder or waist. At present, it is not known how the different harne...
Article
Full-text available
The integration of accelerometers and Global Positioning Systems (GPS) provides the opportunity to objectively measure a players work output Although these systems have been widely adopted at the elite level, a positional profile of the external demands of soccer is currently missing from the literature. This study aimed to investigate the accelera...
Article
The treadmill is an attractive device for the investigation of human locomotion, yet the extent to which lower limb kinematics differ from overground running remains a controversial topic. This study aimed to provide an extensive three-dimensional kinematic comparison of the lower extremities during overground and treadmill running. Twelve particip...
Article
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Abstract Purpose. The aim of the current investigation was to compare the 3-D tibiocalcaneal kinematics between skin-and shoe-mounted markers. Methods. Eleven male participants ran at 4.0m/s ± 5% along a 22 m runway. Tibiocalcaneal kinematics were captured simultaneously using markers placed externally on the shoe and on the skin through windows cu...
Article
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The first aim of this study was to determine whether footwear with different shock attenuating properties can influence running economy. The second was to determine whether kinetic, 3-D kinematic and EMG parameters could be related to running economy. Twelve male participants completed 6-min of steady state treadmill running at 4.0 m.s-1 in two dif...
Article
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Biomechanical analysis requires the determination of specific foot contact events. This is typically achieved using force platform information; however, when force platforms are unavailable, alternative methods are necessary. A method was developed for the determination of gait events using an accelerometer mounted to the distal tibia, measuring ax...
Article
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Studies investigating the mechanics of human movement are often conducted using the treadmill. The treadmill is an attractive device for the analysis of human locomotion. Studies comparing overground and treadmill running have analyzed discrete variables, however differences in excursion from footstrike to peak angle and range of motion during stan...
Article
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Three-dimensional (3-D) kinematic analyses are used widely in both sport and clinical examinations. However, this procedure depends on reliable palpation of anatomical landmarks and mal-positioning of markers between sessions may result in improperly defined segment co-ordinate system axes which will produce in-consistent joint rotations. This had...
Article
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Cardan/Euler and helical angles are the popular methods of quantifying angular kinematics. Cardan angles are sequence dependent and crosstalk can influence the kinematic calculations. The International Society of Biomechanics (ISB) recommends a sagittal, coronal, and then transverse (XYZ) sequence of rotations, although it has been proposed that wh...
Article
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Background: Barefoot running has been the subject of much attention in footwear biomechanics literature, based on the supposition that it serves to reduce the occurrence of overuse injuries in comparison to conventional shoe models. This consensus has led footwear manufacturers to develop shoes that aim to mimic the mechanics of barefoot locomotion...
Article
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Interest in distance running amongst females has expanded rapidly. Although there are numerous health benefits associated with running, the occurrence of injury is well documented. Given the relative susceptibility of females to overuse running injuries, a key issue within the discipline of footwear biomechanics that has yet to be appropriately add...
Article
Full-text available
Gait analysis necessitates the identification of foot-strike and toe-off events. This is characteristically achieved using force-platforms. However, when force data is unavailable, alternative methods are necessary. Several kinematic algorithms have emerged, but their effectiveness has yet to be validated for running gait. The rationale for this in...
Article
Full-text available
Foot strike can be difficult to determine using kinematics alone, particularly when studying equine activities on more compliant surfaces, so this study was done with the aim of developing and validating a method to determine foot strike on an arena surface that can be used in conjunction with kinematics alone, and of applying the method in the con...
Article
This paper reports on an ongoing collaboration between fashion design and sports science, which is exploring the potential of a 'personal style device' (PSD): an artefact/interaction concept that can be worn on the body and be sensitive to the kinematics of wearing it. We aim that such a device will have the potential to stimulate new forms of body...
Poster
Full-text available
The 2003 Woodvale Atlantic Rowing Race involved rowing from La Gomera in the Canary Islands to Port St. Charles, Barbados in a purpose built 2-person rowing boat, 7.1m long and 1.9m wide, with a minimum mass of 750 kg fully laden. No outside assistance was allowed during the crossing and the crew had to be completely self sufficient. Drinking water...
Article
To review the importance, clinical features, investigations, management and prognosis of non-traumatic vascular injuries, affecting the lower limbs of endurance athletes. Review of literature. A literature search was conducted from Medline, Pubmed, the National Electronic Library for Health, Google and Yahoo search engines for related articles and...

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Projects (4)
Project
PhD The Menstrual Cycle and how it Affects Strength and Coaching Requirements
Project
PhD Feedback and it's Effect on Mental Readiness
Project
Decentralised Leadership: An Oxymoron, or the Future of Leadership?