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Author = Delahunt, Eamonn;
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Displaying Results 1 - 25 of 30 on page 1 of 2
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A comparison of the movement patterns of specific rugby union movements on both natural turf and artificial turf
(2017)
O'Keeffe, Seamus; Fullam, Karl; Feeley, Marc O.; Caulfield, Brian; Delahunt, Eamon...
A comparison of the movement patterns of specific rugby union movements on both natural turf and artificial turf
(2017)
O'Keeffe, Seamus; Fullam, Karl; Feeley, Marc O.; Caulfield, Brian; Delahunt, Eamonn; Coughlan, Garrett; Gilchrist, M. D.
Abstract:
2nd International Congress on Sport Sciences Research and Technology Support (IcSPORTS 2014), Rome, Italy, 24-26 October 2014
A limitation of sports kinematic studies is that they cannot fully represent in-situ play conditions for fast dynamic sports. This paper describes the use of new inertial sensor measurement technology (ODonovan et al., 2009) to analyse player motions in the field under game-like conditions in order to quantify the impact of different playing surfaces on movement patterns. The wireless sensor system used in this study (Shimmer 3, Shimmer Research, Ireland) is a lightweight (50x25x12.5mm3), wearable, low-power consumption inertial measurement unit that contains a tri-axial accelerometer, gyroscope, and magnetometer. Sensor data can be used to derive a range of spatiotemporal and kinematic variables to quantify performance during gait and other functional activities. In our research we are using these sensors as a means to characterise movement during a runn...
http://hdl.handle.net/10197/8453
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Lower extremity coordination and symmetry patterns during a drop vertical jump task following acute ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Sweeney, Kevin T.; Caulfield, Brian;...
Lower extremity coordination and symmetry patterns during a drop vertical jump task following acute ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Sweeney, Kevin T.; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Purpose: Evaluate the potentially adaptive movement patterns associated with acute lateral ankle sprain (LAS) using biomechanical analyzes. Methods: Thirty participants with acute LAS and nineteen controls performed a drop vertical jump (DVJ) task. 3D kinematic and sagittal plane kinetic profiles were plotted for the hip, knee and ankle joints of both limbs for the drop jump (phase 1) and drop landing (phase 2) phases of the DVJ. Inter-limb symmetry and the rate of force development (RFD) relative to bodyweight (BW) during both phases of the DVJ were also determined. Results: The LAS group displayed reduced ankle plantar-flexion on their injured limb during phase 2 of the DVJ, with greater associated inter-limb asymmetry for this movement (p < .05). The LAS group also displayed altered kinetic profiles, with increased inter-limb hip asymmetry for both phases of the DVJ (p < .05). This was associated with a decrease in the LAS participants’ injured limb RFD during phase 2 of th...
http://hdl.handle.net/10197/8438
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Acute ankle sprain injury alters kinematic and centre of pressure measures of postural control during single limb stance
(2017)
Doherty, Cailbhe; Delahunt, Eamonn; Bleakley, Chris J.; Hertel, Jay; Ryan, John; Caulfi...
Acute ankle sprain injury alters kinematic and centre of pressure measures of postural control during single limb stance
(2017)
Doherty, Cailbhe; Delahunt, Eamonn; Bleakley, Chris J.; Hertel, Jay; Ryan, John; Caulfield, Brian
Abstract:
Background: Upright single-limb stance (SLS) is maintained via integration of visual, vestibular and somatosensory afferents. The presence of redundancies between these afferents allows the sensorimotor system to simplify a specific task within a number of strategies. Musculoskeletal injury challenges the somatosensory system to reweight distorted sensory afferents. No current investigation has supplemented kinetic analysis of eyes-open and eyes-closed SLS tasks with a kinematic profile of lower limb postural orientation in an acute lateral ankle sprain (LAS) group to assess the adaptive capacity of the sensorimotor system to injury. Objective: To compare centre of pressure (COP) and lower limb postural orientation characteristics of participants with acute LAS to non-injured participants during a SLS task. Design Cross-sectional: Setting University biomechanics laboratory. Participants: 66 participants with acute LAS completed a task of eyes-open SLS on their injured and non-injure...
http://hdl.handle.net/10197/8568
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An Ambulatory Method of Identifying Anterior Cruciate Ligament Reconstructed Gait Patterns
(2015)
Patterson, Matthew; Delahunt, Eamonn; Sweeney, Kevin T.; Caulfield, Brian
An Ambulatory Method of Identifying Anterior Cruciate Ligament Reconstructed Gait Patterns
(2015)
Patterson, Matthew; Delahunt, Eamonn; Sweeney, Kevin T.; Caulfield, Brian
Abstract:
The use of inertial sensors to characterize pathological gait has traditionally been based on the calculation of temporal and spatial gait variables from inertial sensor data. This approach has proved successful in the identification of gait deviations in populations where substantial differences from normal gait patterns exist; such as in Parkinsonian gait. However, it is not currently clear if this approach could identify more subtle gait deviations, such as those associated with musculoskeletal injury. This study investigates whether additional analysis of inertial sensor data, based on quantification of gyroscope features of interest, would provide further discriminant capability in this regard. The tested cohort consisted of a group of anterior cruciate ligament reconstructed (ACL-R) females and a group of non-injured female controls, each performed ten walking trials. Gait performance was measured simultaneously using inertial sensors and an optoelectronic marker based system....
http://hdl.handle.net/10197/6419
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Analysing Fatigue in Chronic Ankle Instability [Poster Presentation]
(2016)
Remus, Alexandria; Delahunt, Eamonn; Sweeney, Kevin T.; Caulfield, Brian
Analysing Fatigue in Chronic Ankle Instability [Poster Presentation]
(2016)
Remus, Alexandria; Delahunt, Eamonn; Sweeney, Kevin T.; Caulfield, Brian
Abstract:
Evolve Biomed 2015, Dublin, Ireland, 29-30 2015
Lateral ankle sprains are one of the most common injuries suffered by athletes in sports. It is estimated that an upwards of 70% of athletes will develop chronic ankle instability following an initial sprain. Despite the high prevalence of CAI, knowledge of the mechanism or prevention of repeated ankle sprains is limited . Since most sprains occur in the latter halves of matches, the purpose of this study was to determine the effects of fatigue on lower limb movement variability in individuals with and without CAI during running gait using 3D inertial sensors
Science Foundation Ireland
http://hdl.handle.net/10197/8235
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Single-leg drop landing movement strategies 6 months following first-time acute lateral ankle sprain injury
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Single-leg drop landing movement strategies 6 months following first-time acute lateral ankle sprain injury
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
No research exists predicating a link between acute ankle sprain injury-affiliated movement patterns and those of chronic ankle instability (CAI) populations. The aim of the current study was to perform a biomechanical analysis of participants, 6 months after they sustained a first-time acute lateral ankle sprain (LAS) injury to establish this link. Fifty-seven participants with a 6-month history of first-time LAS and 20 noninjured participants completed a single-leg drop landing task on both limbs. Three-dimensional kinematic (angular displacement) and sagittal plane kinetic (moment of force) data were acquired for the joints of the lower extremity, from 200 ms pre-initial contact (IC) to 200 ms post-IC. Individual joint stiffnesses and the peak magnitude of the vertical component of the ground reaction force (GRF) were also computed. LAS participants displayed increases in hip flexion and ankle inversion on their injured limb (P < 0.05); this coincided with a reduction in the n...
http://hdl.handle.net/10197/8474
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Balance failure in single limb stance due to ankle sprain injury: An analysis of center of pressure using the fractal dimension method
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Balance failure in single limb stance due to ankle sprain injury: An analysis of center of pressure using the fractal dimension method
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Instrumented postural control analysis plays an important role in evaluating the effects of injury on dynamic stability during balance tasks, and is often conveyed with measures based on the displacement of the center-of-pressure (COP) assessed with a force platform. However, the desired outcome of the task is frequently characterized by a loss of dynamic stability, secondary to injury. Typically, these failed trials are discarded during research investigations, with the potential loss of informative data pertaining to task success. The novelty of the present study is that COP characteristics of failed trials in injured participants are compared to successful trial data in another injured group, and a control group of participants, using the fractal dimension (FD) method. Three groups of participants attempted a task of eyes closed single limb stance (SLS): twenty-nine participants with acute ankle sprain successfully completed the task on their non-injured limb (successful injury g...
http://hdl.handle.net/10197/8310
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Coordination and symmetry patterns during the drop vertical jump, 6-months after first-time lateral ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Caulfield, Brian; Ryan, John; Sweeney, Kevin T.; ...
Coordination and symmetry patterns during the drop vertical jump, 6-months after first-time lateral ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Caulfield, Brian; Ryan, John; Sweeney, Kevin T.; Patterson, Matthew; Delahunt, Eamonn
Abstract:
To evaluate the adaptive movement and motor control patterns of a group with a 6-month history of first-time lateral ankle sprain (LAS) injury during a drop vertical jump (DVJ) task. Fifty-one participants with a 6-month history of first-time acute LAS injury and twenty controls performed a DVJ task. 3D kinematic and sagittal plane kinetic profiles were plotted for the lower extremity joints of both limbs for the drop jump (phase 1) and drop landing (phase 2) phases of the DVJ. Inter-limb symmetry and the rate of impact modulation (RIM) relative to bodyweight (BW) during both phases of the DVJ were also determined. LAS participants displayed bilateral increases in knee flexion and an increase in ankle inversion during phases 1 and 2, respectively. They also displayed reduced ankle plantar flexion on their injured limb during both phases of the DVJ (p < 0.05); increased inter-limb asymmetry of RIM was noted for both phases of the DVJ, while the moment-of-force profile exhibited bi...
http://hdl.handle.net/10197/8454
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Dynamic balance deficits in individuals with chronic ankle instability compared to ankle sprain copers 1 year after a first-time lateral ankle sprain injury
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Dynamic balance deficits in individuals with chronic ankle instability compared to ankle sprain copers 1 year after a first-time lateral ankle sprain injury
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Purpose: To quantify the dynamic balance deficits that characterise a group with chronic ankle instability compared to lateral ankle sprain copers and non-injured controls using kinematic and kinetic outcomes. Methods: Forty-two participants with chronic ankle instability and twenty-eight lateral ankle sprain copers were initially recruited within 2 weeks of sustaining a first-time, acute lateral ankle sprain and required to attend our laboratory 1 year later to complete the current study protocol. An additional group of non-injured individuals were also recruited to act as a control group. All participants completed the anterior, posterior-lateral and posterior-medial reach directions of the star excursion balance test. Sagittal plane kinematics of the lower extremity and associated fractal dimension of the centre of pressure path were also acquired. Results: Participants with chronic ankle instability displayed poorer performance in the anterior, posterior-medial and posterior-lat...
http://hdl.handle.net/10197/8308
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Evaluating Performance of the Lunge Exercise with Multiple and Individual Inertial Measurement Units
(2016)
Whelan, Darragh; O'Reilly, Martin; Ward, Tomás; Delahunt, Eamonn; Caulfield, Brian
Evaluating Performance of the Lunge Exercise with Multiple and Individual Inertial Measurement Units
(2016)
Whelan, Darragh; O'Reilly, Martin; Ward, Tomás; Delahunt, Eamonn; Caulfield, Brian
Abstract:
Pervasive Health 2016: 10th EAI International Conference on Pervasive Computing Technologies for Healthcare, Cancun, Mexico, 16-19 May 2016
The lunge is an important component of lower limb rehabilitation, strengthening and injury risk screening. Completing the movement incorrectly alters muscle activation and increases stress on knee, hip and ankle joints. This study sought to investigate whether IMUs are capable of discriminating between correct and incorrect performance of the lunge. Eighty volunteers (57 males, 23 females, age: 24.68± 4.91 years, height: 1.75± 0.094m, body mass: 76.01±13.29kg) were fitted with five IMUs positioned on the lumbar spine, thighs and shanks. They then performed the lunge exercise with correct form and 11 specific deviations from acceptable form. Features were extracted from the labelled sensor data and used to train and evaluate random-forests classifiers. The system achieved 83% accuracy, 62% sensitivity and 90% specificity in binary classificat...
http://hdl.handle.net/10197/7876
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Evaluating Performance of the Single Leg Squat Exercise with a Single Inertial Measurement Unit
(2015)
Whelan, Darragh; O'Reilly, Martin; Ward, Tomas E.; Delahunt, Eamonn; Caulfield, Brian
Evaluating Performance of the Single Leg Squat Exercise with a Single Inertial Measurement Unit
(2015)
Whelan, Darragh; O'Reilly, Martin; Ward, Tomas E.; Delahunt, Eamonn; Caulfield, Brian
Abstract:
The single leg squat (SLS) is an important component of lower limb rehabilitation and injury risk screening tools. This study sought to investigate whether a single lumbar-worn IMU is capable of discriminating between correct and incorrect performance of the SLS. Nineteen healthy volunteers (15 males, 4 females, age: 26.09±3.98 years, height: 1.75±0.14m, body mass: 75.2±14.2kg) were fitted with a single IMU on the lumbar spine and asked to perform 10 left leg SLS. These repetitions were recorded and labelled by a chartered physiotherapist. Features were extracted from the labelled sensor data. These features were used to train and evaluate a random-forests classifier. The system achieved an average of 92% accuracy, 78% sensitivity and 97% specificity. These results indicate that a single IMU has the potential to differentiate between a correctly and incorrectly completed SLS. This may allow such devices to be used by clinicians to help track rehabilitation of p...
http://mural.maynoothuniversity.ie/9539/
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Evaluating Performance of the Single Leg Squat Exercise with a Single Inertial Measurement Unit
(2017)
O'Reilly, Martin; Ward, Tomás; Delahunt, Eamonn; Caulfield, Brian
Evaluating Performance of the Single Leg Squat Exercise with a Single Inertial Measurement Unit
(2017)
O'Reilly, Martin; Ward, Tomás; Delahunt, Eamonn; Caulfield, Brian
Abstract:
REHAB '15: 3rd 2015 Workshop on ICTs for improving Patients Rehabilitation Research Techniques, Lisbon, Portugal, 1-2 October 2015
The single leg squat (SLS) is an important component of lower limb rehabilitation and injury risk screening tools. This study sought to investigate whether a single lumbar-worn IMU is capable of discriminating between correct and incorrect performance of the SLS. Nineteen healthy volunteers (15 males, 4 females, age: 26.09± 3.98 years, height: 1.75± 0.14m, body mass: 75.2±14.2kg) were fitted with a single IMU on the lumbar spine and asked to perform 10 left leg SLS. These repetitions were recorded and labelled by a chartered physiotherapist. Features were extracted from the labelled sensor data. These features were used to train and evaluate a random-forests classifier. The system achieved an average of 92% accuracy, 78% sensitivity and 97% specificity. These results indicate that a single IMU has the potential to differentiate between a correct...
http://hdl.handle.net/10197/8548
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Evaluating Squat Performance with a Single Inertial Measurement Unit
(2017)
O'Reilly, Martin; Whelan, Darragh; Chanialidis, Charalampos; Friel, Nial; Delahunt...
Evaluating Squat Performance with a Single Inertial Measurement Unit
(2017)
O'Reilly, Martin; Whelan, Darragh; Chanialidis, Charalampos; Friel, Nial; Delahunt, Eamonn; Ward, Tomás; Caulfield, Brian
Abstract:
2015 IEEE 12th International Conference on Wearable and Implantable Body Sensor Networks, MIT, Cambridge, Massachusetts, United States of America, 9-12 June 2015
Inertial measurement units (IMUs) may be used during exercise performance to assess form and technique. To maximise practicality and minimise cost a single-sensor system is most desirable. This study sought to investigate whether a single lumbar-worn IMU is capable of identifying seven commonly observed squatting deviations. Twenty-two volunteers (18 males, 4 females, age: 26.09±3.98 years, height: 1.75±0.14m, body mass: 75.2±14.2 kg) performed the squat exercise correctly and with 7 induced deviations. IMU signal features were extracted for each condition. Statistical analysis and leave one subject out classifier evaluation were used to assess the ability of a single sensor to evaluate performance. Binary level classification was able to distinguish between correct and incorrect squatting performance with a sensitivity...
http://hdl.handle.net/10197/8673
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Gait Biomechanics in Participants, Six Months after First-Time Lateral Ankle Sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Herte, Jay; Caulfield, Brian; Ryan, John; Delahun...
Gait Biomechanics in Participants, Six Months after First-Time Lateral Ankle Sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Herte, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
No research currently exists predicating a link between the injury-affiliated sensorimotor deficits of acute ankle sprain and those of chronic ankle instability during gait. This analysis evaluates participants with a 6-month history of ankle sprain injury to affirm this link. 69 participants with a 6-month history of acute first-time lateral ankle sprain were divided into subgroups (‘chronic ankle instability’ and 'coper') based on their self-reported disability and compared to 20 non-injured participants during a gait task. Lower extremity kinematic and kinetic data were collected from 200 ms pre- to 200 ms post-heel strike (period 1) and from 200 ms pre- to 200 ms post-toe off (period 2). The ‘chronic ankle instability’ subgroup (who reported greater disability) displayed increased knee flexion during period 1. During period 2, this subgroup exhibited greater total displacement at their ankle joint and greater extensor dominance at their knee. That many of these feature...
http://hdl.handle.net/10197/8484
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Influence of fatigue on turning characteristics in those with chronic ankle instability
(2017)
Remus, Alexandria; Delahunt, Eamonn; Caulfield, Brian
Influence of fatigue on turning characteristics in those with chronic ankle instability
(2017)
Remus, Alexandria; Delahunt, Eamonn; Caulfield, Brian
Abstract:
6th International Ankle Symposium (IAS), Dublin, Ireland, 16-18 October 2015
Background: Ankle sprains are typically sustained during change of direction tasks and often occur during the latter thirds of both halves of matches. The effects of fatigue on turning kinematic characteristics has not been studied in a chronic ankle instability population.
http://hdl.handle.net/10197/8584
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Inter-joint coordination strategies during unilateral stance 6-months following first-time lateral ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Ryan, John; Sweeney, Kevin T.; Delah...
Inter-joint coordination strategies during unilateral stance 6-months following first-time lateral ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Ryan, John; Sweeney, Kevin T.; Delahunt, Eamonn
Abstract:
Background: Longitudinal analyses of participants with a history of lateral ankle sprain are lacking. This investigation combined measures of inter-joint coordination and stabilometry to evaluate eyes-open (condition 1) and eyes-closed (condition 2) static unilateral stance performance in a group of participants, 6-months after they sustained an acute, first-time lateral ankle sprain in comparison to a control group. Methods: Sixty-nine participants with a 6-month history of first-time lateral ankle sprain and 20 non-injured controls completed three 20-second unilateral stance task trials in conditions 1 and 2. An adjusted coefficient of multiple determination statistic was used to compare stance limb 3-dimensional kinematic data for similarity in the aim of establishing patterns of lower-limb inter-joint coordination. The fractal dimension of the stance limb centre of pressure path was also calculated. Findings: Between-group analyses revealed significant differences in stance limb...
http://hdl.handle.net/10197/8441
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Laboratory Measures of Postural Control During the Star Excursion Balance Test After Acute First-Time Lateral Ankle Sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Laboratory Measures of Postural Control During the Star Excursion Balance Test After Acute First-Time Lateral Ankle Sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Context: No researchers, to our knowledge, have investigated the immediate postinjury-movement strategies associated with acute first-time lateral ankle sprain (LAS) as quantified by center of pressure (COP) and kinematic analyses during performance of the Star Excursion Balance Test (SEBT). Objective: To analyze the kinematic and COP patterns of a group with acute first-time LAS and a noninjured control group during performance of the SEBT. Design: Case-control study. Setting: University biomechanics laboratory. PATIENTS OR Other particpants: A total of 81 participants with acute first-time LAS (53 men, 28 women; age = 23.22 ± 4.93 years, height = 1.73 ± 0.09 m, mass = 75.72 ± 13.86 kg) and 19 noninjured controls (15 men, 4 women; age = 22.53 ± 1.68 years, height = 1.74 ± 0.08 m, mass = 71.55 ± 11.31 kg). Intervention: Participants performed the anterior (ANT), posterolateral (PL), and posteromedial (PM) reach directions of the SEBT. Main outcome Measure(s): We assessed 3-dimension...
http://hdl.handle.net/10197/8449
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Single-leg drop landing motor control strategies following acute ankle sprain injury
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Single-leg drop landing motor control strategies following acute ankle sprain injury
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
No research currently exists investigating the effect of acute injury on single-limb landing strategies. The aim of the current study was to analyse the coordination strategies of participants in the acute phase of lateral ankle sprain (LAS) injury. Thirty-seven participants with acute, first-time, LAS and nineteen uninjured participants completed a single-leg drop landing task (DL) on both limbs. 3-dimensional kinematic (angular displacement) and sagittal plane kinetic (moment of force) data were acquired for the joints of the lower extremity, from 200ms pre-initial contact (IC) to 200ms post IC. The peak magnitude of the vertical component of the ground reaction force (GRF) was also computed. Injured participants displayed a bilateral increase in hip flexion, with altered transverse plane kinematic profiles at the knee and ankle for both limbs (p < 0.05). This coincided with a reduction in the net supporting flexor moment of the lower extremity (p < 0.05) and magnitude of th...
http://hdl.handle.net/10197/8309
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Locomotive biomechanics in persons with chronic ankle instabilityand lateral ankle sprain copers
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Locomotive biomechanics in persons with chronic ankle instabilityand lateral ankle sprain copers
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Objectives: To compare the locomotive biomechanics of participants with chronic ankle instability (CAI) to those of lateral ankle sprain (LAS) copers. Design: Cross-sectional study. Methods: Twenty-eight participants with CAI and 42 LAS copers each performed 5 self-selected paced gait trials. 3-D lower extremity temporal kinematic and kinetic data were collected for these participants from 200 ms pre- to 200 ms post-heel strike (period 1) and from 200 ms pre- to 200 ms post-toe off (period 2). Results: The CAI group displayed increased hip flexion bilaterally during period 1 compared to LAS copers. During period 2, CAI participants exhibited reduced hip extension bilaterally, increased knee flexion bilaterally and increased ankle inversion on the ‘involved’ limb. They also displayed a bilateral decrease in the flexor moment pattern at the knee. Conclusions: Considering that all of the features which distinguished CAI participants from LAS copers were also evident in our previously p...
http://hdl.handle.net/10197/8362
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Low Energy Availability in Athletes: A Review of Prevalence, Dietary Patterns, Physiological Health, and Sports Performance
(2018)
Logue, Danielle; Madigan, Sharon M.; Delahunt, Eamonn; Heinen, Mirjam M.; Mc Donnell, S...
Low Energy Availability in Athletes: A Review of Prevalence, Dietary Patterns, Physiological Health, and Sports Performance
(2018)
Logue, Danielle; Madigan, Sharon M.; Delahunt, Eamonn; Heinen, Mirjam M.; Mc Donnell, Sarah-Jane; Corish, Clare A.
Abstract:
In a high-performance sports environment, athletes can present with low energy availability (LEA) for a variety of reasons, ranging from not consuming enough food for their specific energy requirements to disordered eating behaviors. Both male and female high-performance athletes are at risk of LEA. Longstanding LEA can cause unfavorable physiological and psychological outcomes which have the potential to impair an athlete’s health and sports performance. This narrative review summarizes the prevalence of LEA and its associations with athlete health and sports performance. It is evident in the published scientific literature that the methods used to determine LEA and its associated health outcomes vary. This contributes to poor recognition of the condition and its sequelae. This review also identifies interventions designed to improve health outcomes in athletes with LEA and indicates areas which warrant further investigation. While return-to-play guidelines have been developed for ...
http://hdl.handle.net/10197/9431
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Lower extremity function during gait in participants with first time acute lateral ankle sprain compared to controls
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Lower extremity function during gait in participants with first time acute lateral ankle sprain compared to controls
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Laboratory analyses of chronic ankle instability populations during gait have elucidated a number of anomalous movement patterns. No current research exists analysing these movement patterns in a group in the acute phase of lateral ankle sprain (LAS) injury. It is possible that participants with an acute LAS display movement patterns continuous with their chronically impaired counterparts. Sixty eight participants with acute LAS and nineteen non-injured participants completed five gait trials. 3D lower extremity temporal kinematic and kinetic data were collected from 200ms pre- to 200ms post-heel strike (period 1) and from 200ms pre- to 200ms post-toe off (period 2). During period 1, the LAS group displayed increased knee flexion with increased net extensor pattern at the knee joint, increased ankle inversion with a greater inversion moment, and reduced ankle plantar flexion, compared to the non-injured control group. During period 2, the LAS group displayed decreased hip extension ...
http://hdl.handle.net/10197/8361
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Lower Limb Interjoint Postural Coordination One Year after First-Time Lateral Ankle Sprain
(2019)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Sweene...
Lower Limb Interjoint Postural Coordination One Year after First-Time Lateral Ankle Sprain
(2019)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Sweeney, Kevin T.; Patterson, Matthew; Delahunt, Eamonn
Abstract:
Introduction: Longitudinal analyses of participants with a history of lateral ankle sprain are lacking. This investigation combined measures of lower limb interjoint coordination and stabilometry to evaluate static unipedal stance with the eyes open (condition 1) and closed (condition 2) in a group of participants with chronic ankle instability (CAI) compared to lateral ankle sprain ‘‘copers’’ (both recruited 12 months after sustaining an acute first-time lateral ankle sprain) and a group of noninjured controls. Methods: Twenty-eight participants with CAI, 42 lateral ankle sprain ‘‘copers,’’ and 20 noninjured controls completed three 20-s singlelimb stance trials in conditions 1 and 2. An adjusted coefficient of multiple determination statistic was used to compare stance limb threedimensional kinematic data for similarity to establish patterns of interjoint coordination. The fractal dimension of the stance limb center of pressure path was also calculated. Results: Between-group ana...
http://hdl.handle.net/10197/10903
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Postural control strategies during single limb stance following acute lateral ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Postural control strategies during single limb stance following acute lateral ankle sprain
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Single-limb stance is maintained via the integration of visual, vestibular and somatosensory afferents. Musculoskeletal injury challenges the somatosensory system to reweight distorted sensory afferents. This investigation supplements kinetic analysis of eyes-open and eyes-closed single-limb stance tasks with a kinematic profile of lower limb postural orientation in an acute lateral ankle sprain group to assess the adaptive capacity of the sensorimotor system to injury. Sixty-six participants with first-time acute lateral ankle sprain completed a 20-second eyes-open single-limb stance task on their injured and non-injured limbs (task 1). Twenty-three of these participants successfully completed the same 20-second single-limb stance task with their eyes closed (task 2). A non-injured control group of 19 participants completed task 1, with 16 completing task 2. 3-dimensional kinematics of the hip, knee and ankle joints, as well as associated fractal dimension of the center-of-pressure...
http://hdl.handle.net/10197/9027
Marked
Mark
Recovery From a First-Time Lateral Ankle Sprain and the Predictors of Chronic Ankle Instability: A Prospective Cohort Analysis
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Recovery From a First-Time Lateral Ankle Sprain and the Predictors of Chronic Ankle Instability: A Prospective Cohort Analysis
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Background: Impairments in motor control may predicate the paradigm of chronic ankle instability (CAI) that can develop in the year after an acute lateral ankle sprain (LAS) injury. No prospective analysis is currently available identifying the mechanisms by which these impairments develop and contribute to long-term outcome after LAS. Purpose: To identify the motor control deficits predicating CAI outcome after a first-time LAS injury. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: Eighty-two individuals were recruited after sustaining a first-time LAS injury. Several biomechanical analyses were performed for these individuals, who completed 5 movement tasks at 3 time points: (1) 2 weeks, (2) 6 months, and (3) 12 months after LAS occurrence. A logistic regression analysis of several "salient" biomechanical parameters identified from the movement tasks, in addition to scores from the Cumberland Ankle Instability Tool and the Foot and Ankle Ability M...
http://hdl.handle.net/10197/8473
Marked
Mark
Single-leg drop landing movement strategies in participants with chronic ankle instability compared with lateral ankle sprain 'copers'
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahu...
Single-leg drop landing movement strategies in participants with chronic ankle instability compared with lateral ankle sprain 'copers'
(2017)
Doherty, Cailbhe; Bleakley, Chris J.; Hertel, Jay; Caulfield, Brian; Ryan, John; Delahunt, Eamonn
Abstract:
Individuals with CAI display alterations in hip joint kinematics and energetics during a unipodal landing task compared to LAS 'copers'. These alterations may be responsible for the increased risk of injury experienced by individuals with CAI during landing manoeuvres. Thus, clinicians must recognise the potential for joints proximal to the affected ankle to contribute to impaired function following an acute lateral ankle sprain injury and to develop rehabilitation protocols accordingly.
Health Research Board
JG: names authorised
http://hdl.handle.net/10197/8567
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