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Displaying Results 1 - 25 of 126 on page 1 of 6
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‘Moving on’ from cancer: the effects of engaging in a 12 week community-based exercise programme on cancer survivors’ physical and psychological well-being
(2016)
Cooney, Mairead; Woods, Catherine; Moyna, Niall; O'Leary, Emer; Furlong, Bróna; Wa...
‘Moving on’ from cancer: the effects of engaging in a 12 week community-based exercise programme on cancer survivors’ physical and psychological well-being
(2016)
Cooney, Mairead; Woods, Catherine; Moyna, Niall; O'Leary, Emer; Furlong, Bróna; Walsh, Deirdre; McCaffrey, Noel
Abstract:
Background: MedEx Wellness is a community-based chronic illness rehabilitation programme located at Dublin City University. It offers exercise classes in a medically supervised environment to patients with a range of chronic illnesses. MedEx ‘Move On’ is the oncology rehabilitation programme that caters for cancer survivors. This study aimed to determine the effect of ‘Move On’ on cancer survivors’ physical and psychological wellbeing. Methods: Adults with an established diagnosis of cancer, who have completed their adjunctive therapy, are referred to ‘Move On’. Participants attend two 60 minute supervised exercise classes per week for 12 weeks. Recruitment to the ‘Move On’ programme occurs every 12 weeks, with approximately 30 participants attending per cycle. Classes are led by exercise specialists and involve a combination of aerobic and resistance training. A single arm pre-test, post-test design was used. At baseline and week 12, assessments of cardiorespiratory fitness (10m sh...
http://doras.dcu.ie/21637/
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A between sex analysis of self and proxy efficacy and its relationship with attendance at a community based chronic illness rehabilitation programme.
(2016)
O'Leary, Emer; McCaffrey, Noel; Moyna, Niall; Doyle, Frank; Furlong, Bróna; Walsh,...
A between sex analysis of self and proxy efficacy and its relationship with attendance at a community based chronic illness rehabilitation programme.
(2016)
O'Leary, Emer; McCaffrey, Noel; Moyna, Niall; Doyle, Frank; Furlong, Bróna; Walsh, Deirdre; Woods, Catherine
Abstract:
Background: Physical activity is a principal intervention in primary and secondary prevention of chronic illness. While the benefits of community based rehabilitation is acknowledged,the rate of attendance and adherence remains sub optimal. Self-efficacy is acknowledged to be a key factor relating to adherence in rehabilitation but the construct of proxy efficacy, defined as one’s confidence in the skills and abilities of a third party to function effectively on another’s behalf, is less often studied. This paper examines the relationship between gender and ‘self’ and ‘proxy-efficacy’ and their potential role in attendance to a community based chronic illness rehabiliation (CBCIR) programme. Methods: Participants attending induction at the programme completed a questionnaire assessing demographics and both self (9 items) and proxy efficacy for exercise (9 items) which was assessed on a Likert scale from 0 (not confident at all) to 10 (very confident), with a higher score indicating ...
http://doras.dcu.ie/21632/
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A comparison of the aerobic energy demands of two commercially available cycle ergometers in trained cyclists
(2009)
May, Gregory; Warrington, Giles
A comparison of the aerobic energy demands of two commercially available cycle ergometers in trained cyclists
(2009)
May, Gregory; Warrington, Giles
Abstract:
The purpose of this study was to compare the energy demands of two cycling ergometers, (Velotron Dynafit Pro and Monark 834E) commonly used in the physiological monitoring of elite athletes. Eight trained male cyclists with a minimum 2 years training and racing experience participated in the study. Each subject completed an exercise trial involving a maximal incremental test. Testing was performed in a random order on either the Velotron or Monark cycle ergometer at the same time of day with no more than 14 days between each testing session. Subjects were requested to maintain their normal training and nutritional practices during the course of the study but to refrain from any intensive training 48 hours prior to each testing session. During the incremental testing significant differences for power output (PO), heart rate (HR), and oxygen uptake (VO2) were found at both at fixed blood lactate (BL) reference points of; 2.5mmol l-1 (REF2.5mM) and at 4mmol.l-1 (REF4mM). Overall the Ve...
http://doras.dcu.ie/4617/
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A framework for comprehensive analysis of a swing in sports using low-cost inertial sensors
(2014)
Ahmadi, Amin; Destelle, Francois; Monaghan, David; O'Connor, Noel E.; Richter, Chr...
A framework for comprehensive analysis of a swing in sports using low-cost inertial sensors
(2014)
Ahmadi, Amin; Destelle, Francois; Monaghan, David; O'Connor, Noel E.; Richter, Chris; Moran, Kieran
Abstract:
We present a novel framework to monitor the three- dimensional trajectory (orientation and position) of a golf swing using miniaturized inertial sensors. Firstly we employed a highly accurate and computationally efficient revised gradient descent algorithm to obtain the orientation of a golf club. Secondly, we designed a series of digital filters to determine the backward and forward segments of the swing, enabling us to calculate drift-free linear velocity along with the relative 3D position of the golf club during the entire swing. Finally, the calculated motion trajectory was verified against a ground truth VICON system using Iterative Closest Point (ICP) in conjunction with Principal Component Analysis (PCA). The computationally efficient framework present here achieves a high level of accuracy (r = 0.9885, p < 0.0001) for such a low-cost system. This framework can be utilized for reliable movement technique evaluation and can provide near real-time feedback for athletes in v...
http://doras.dcu.ie/20594/
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A Monocular Marker-Free Gait Measurement System
(2010)
Courtney, Jane; De Paor, Annraoi M
A Monocular Marker-Free Gait Measurement System
(2010)
Courtney, Jane; De Paor, Annraoi M
Abstract:
This paper presents a new, user-friendly, portable motion capture and gait analysis system for capturing and analyzing human gait, designed as a telemedicine tool to monitor remotely the progress of patients through treatment. The system requires minimal user input and simple single-camera filming (which can be acquired from a basic webcam) making it very accessible to nontechnical, nonclinical personnel. This system can allow gait studies to acquire a much larger data set and allow trained gait analysts to focus their skills on the interpretation phase of gait analysis. The design uses a novel motion capture method derived from spatiotemporal segmentation and model-based tracking. Testing is performed on four monocular, sagittal-view, sample gait videos. Results of modeling, tracking, and analysis stages are presented with standard gait graphs and parameters compared to manually acquired data.
https://arrow.dit.ie/biodevart/7
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A multidisciplinary examination of walkability: Its concept, measurement and applicability
(2013)
Fitzsimons D'Arcy, Lorraine
A multidisciplinary examination of walkability: Its concept, measurement and applicability
(2013)
Fitzsimons D'Arcy, Lorraine
Abstract:
This thesis explores the term ‘walkability’, how itis understood, measured and what role it plays in neighbourhood mobility and physical activity behaviours. Two groups are of interest in this study, the professionals tasked with planning and designing neighbourhoods and the residents who live within these environments. This thesis outlines a mixed methods project comprising of a literature review and four studies. The literature review analyses the concept of walkability with particular focus on identifying and collating neighbourhood meatures associated with walking behaviour and how they are measured. An online survey was used to understand level of ambiguity, or agreement, between relevant professions on the elements of walkable environments in study one. Study two further explores walkability using a phenomenological study with a select group from study one. In study three, a novel site selection process, based on the findings of the previous studies, was used to identify h...
http://doras.dcu.ie/19387/
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A prospective investigation of the association between isometric muscle strength and running related Injury among novice and recreational runners
(2019)
Dillon, Sarah; White, Enda; Burke, Aoife; O'Connor, Siobhán; Gore, Shane; Moran, K...
A prospective investigation of the association between isometric muscle strength and running related Injury among novice and recreational runners
(2019)
Dillon, Sarah; White, Enda; Burke, Aoife; O'Connor, Siobhán; Gore, Shane; Moran, Kieran
Abstract:
Introduction Recreational running has many health, social and psychological benefits. However, there is a considerable risk of developing a running related injury (RRI) (1). Therefore, understanding the aetiology of these injuries, with a view to reducing the risk of their development is of paramount importance. Deficits in muscle strength is a proposed risk factor in developing RRIs, though conflicting evidence exists to support this claim (2,3). The majority of this research has been retrospective, limiting the ability to establish a causal relationship. Furthermore, many studies have had small sample sizes, low relative numbers of injured participants or employed isokinetic machines, which have practical limitations. This study aims to prospectively investigate the impact of isometric muscle strength on the likelihood of sustaining a RRI. Methods: One hundred and seventy six injury-free recreational and novice runners (66 females, 110 males, 42.5±9.2 yrs) were recruited. During a...
http://doras.dcu.ie/23556/
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A textile-based platform for real-time sweat collection and analysis
(2009)
Coyle, Shirley; Lau, King-Tong; Taccini, Nicola; Paradiso, Rita; Chuzel, Cyril; Diamond...
A textile-based platform for real-time sweat collection and analysis
(2009)
Coyle, Shirley; Lau, King-Tong; Taccini, Nicola; Paradiso, Rita; Chuzel, Cyril; Diamond, Dermot
Abstract:
The ability to perform real-time chemical measurements of body fluids is an exciting concept for the healthcare sector and the sports industry. This work is part of the BIOTEX project, an EU FP6 project which involved the development of textile-based sensors to measure the chemical composition of sweat. This is a challenging task involving the collection of sweat samples, delivery to an active surface and the removal of waste products. A textile based platform which would be in immediate contact with the skin was developed for this purpose. The system uses capillary action and exhibits a passive pumping mechanism. This is achieved by using a combination of moisture wicking fabric and a highly absorbent material. A fabric channel is created for the integration of sensors. The channel is produced using a mask and screen-printing hydrophobic material onto the fabric. Different channel lengths and widths affect the flow rate of the system. The channel dimensions were designed b...
http://doras.dcu.ie/14919/
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A toolkit for analysis of deep learning experiments
(2016)
O'Donoghue, Jim; Roantree, Mark
A toolkit for analysis of deep learning experiments
(2016)
O'Donoghue, Jim; Roantree, Mark
Abstract:
Learning experiments are complex procedures which gener- ate high volumes of data due to the number of updates which occur during training and the number of trials necessary for hyper-parameter selection. Often during runtime, interim result data is purged as the experiment progresses. This purge makes rolling-back to interim experiments, restarting at a specific point or discovering trends and patterns in parameters, hyperparameters or results almost impossible given a large experiment or experiment set. In this research, we present a data model which captures all aspects of a deep learning experiment and through an application programming interface provides a simple means of storing, retrieving and analysing parameter settings and interim results at any point in the experiment. This has the further benefit of a high level of interoperability and sharing across machine learning researchers who can use the model and its interface for data management.
http://doras.dcu.ie/21258/
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A virtual coaching environment for improving golf swing technique
(2010)
Kelly, Philip; Healy, Aoife; Moran, Kieran; O'Connor, Noel E.
A virtual coaching environment for improving golf swing technique
(2010)
Kelly, Philip; Healy, Aoife; Moran, Kieran; O'Connor, Noel E.
Abstract:
As a proficient golf swing is a key element of success in golf, many golfers make significant effort improving their stroke mechanics. In order to help enhance golfing performance, it is important to identify the performance determining factors within the full golf swing. In addition, explicit instructions on specific features in stroke technique requiring alterations must be imparted to the player in an unambiguous and intuitive manner. However, these two objectives are difficult to achieve due to the subjective nature of traditional coaching techniques and the predominantly implicit knowledge players have of their movements. In this work, we have developed a set of visualisation and analysis tools for use in a virtual golf coaching environment. In this virtual coaching studio, the analysis tools allow for specific areas require improvement in a player's 3D stroke dynamics to be isolated. An interactive 3D virtual coaching environment then allows detailed and unambiguous coach...
http://doras.dcu.ie/15565/
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A wearable electrochemical sensor for the real-time measurement of sweat sodium concentration
(2010)
Schazmann, Benjamin; Morris, Deirdre; Slater, Conor; Beirne, Stephen; Fay, Cormac; Reuv...
A wearable electrochemical sensor for the real-time measurement of sweat sodium concentration
(2010)
Schazmann, Benjamin; Morris, Deirdre; Slater, Conor; Beirne, Stephen; Fay, Cormac; Reuveny, Ronen; Moyna, Niall; Diamond, Dermot
Abstract:
We report a new method for the real-time quantitative analysis of sodium in human sweat, consolidating sweat collection and analysis in a single, integrated, wearable platform. This temporal data opens up new possibilities in the study of human physiology, broadly applicable from assessing high performance athletes to monitoring Cystic Fibrosis (CF) sufferers. Our compact Sodium Sensor Belt (SSB) consists of a sodium selective Ion Selective Electrode (ISE) integrated into a platform that can be interfaced with the human body during exercise. No skin cleaning regime or sweat storage technology is required as the sweat is continually wicked from the skin to a sensing surface and from there to a storage area via a fabric pump. Our results suggest that after an initial equilibration period, a steady-state sodium plateau concentration was reached. Atomic Absorption Spectroscopy (AAS) was used as a reference method, and this has confirmed the accuracy of the new continuous monitoring appr...
http://doras.dcu.ie/15359/
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Activity profile, PlayerLoad™ and heart rate response of Gaelic football players: a pilot study
(2019)
Gamble, Declan; Spencer, Matt; McCarren, Andrew; Moyna, Niall
Activity profile, PlayerLoad™ and heart rate response of Gaelic football players: a pilot study
(2019)
Gamble, Declan; Spencer, Matt; McCarren, Andrew; Moyna, Niall
Abstract:
The objectives of this study were to; quantify positional differences in the activity profiles of Gaelic football players and to evaluate decrements in physical performance during a pre-season competition. Global positioning system (GPS) data was recorded from 36 players from 3 teams across 5 games. The relative distance covered in locomotor activities, peak speed, relative PlayerLoad™ (PL.min-1) and heart rate responses were evaluated between playing positions and across match periods using a mixed model analysis. The mean relative distance of 92.4 ± 23.3 m.min-1 covered, comprised 28.4 ± 10.2 m.min-1 of high intensity running (m.min-1 ≥ 4.0 m.s-1) and 9.9 ± 3.9 m.min-1 of very high intensity running (m.min-1 ≥ 5.5 m.s-1). High intensity running and relative PlayerLoad™ (PL.min-1) was significantly higher in half-backs, midfielders and half-forwards compared to the full-backs, whereas only the half-backs and half-forwards displayed significantly greater values compared to full-forw...
http://doras.dcu.ie/23443/
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Alterations in team physical performance and possession in elite Gaelic football competition
(2020)
Gamble, Declan; Moyna, Niall; McCann, Richard; Martin, Damian; McMahon, Gerard; Rooney,...
Alterations in team physical performance and possession in elite Gaelic football competition
(2020)
Gamble, Declan; Moyna, Niall; McCann, Richard; Martin, Damian; McMahon, Gerard; Rooney, Lee; Spencer, Matt; Bradley, Jonathan; McCarren, Andrew
Abstract:
Differences in performance between winning and losing were examined in 1 elite Gaelic football team in 20 games across 2 complete competitive seasons. Possession was codified using Dartfish TeamPro software and distance covered; walking, jogging, running, and running at high and maximum speeds, was evaluated using Catapult Optimeye S5 player tracking devices. Distance covered in low intensity activity (LIA, ˂4.0 m.s-1 ), high intensity running (HIR, ≥4.0 m·s-1 ) and very high intensity running (VHIR, ≥5.5 m·s-1 ) was also examined along with PlayerLoad™, which represented a composite of all accelerations. Data from 53 players (n=405 files) was collated into specific match periods to facilitate a temporal analysis between the first and second halves and from quarter 1 (Q1) to quarter 4 (Q4), with significance accepted at p ≤ 0.05. Total distance and running was higher in games lost, whereas total distance, walking and LIA was higher in halves lost. Only walking was higher in quarters...
http://doras.dcu.ie/25437/
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An analysis of the impact of acute sleep deprivation on repeat cycling time trial performance
(2011)
May, Gregory; Fitzpatick, Paula; Cullen, Sarah Jane; O'Hagan, Anna; Kelly, Lauren;...
An analysis of the impact of acute sleep deprivation on repeat cycling time trial performance
(2011)
May, Gregory; Fitzpatick, Paula; Cullen, Sarah Jane; O'Hagan, Anna; Kelly, Lauren; Warrington, Giles
Abstract:
Ultra-endurance cycling events, such as the Race Around Ireland (RAI), involve performing periods of intermittent high intensity cycling for extended durations. The ability to maintain a consistently high mean power output whilst in a sleep deprived state is a critical factor in optimising performance. Purpose: To evaluate the effects of acute sleep deprivation, over 24 hours, on a repeat cycling time trial performance. Methods: Six trained male cyclists (mean ± SD: age 33 ± 4 years; height 1.82 ± 0.03 m; mass 79.3 ± 8 kg) were tested on 3 occasions; each testing bout was separated by 7 days, within a 21 day period. During the first test, subjects performed a maximal incremental test on an electromagnetically braked cycle ergometer. Following a standardised recovery period, each subject then completed a baseline 20 minute self-paced maximal performance test (MPT). The subjects subsequently returned on two further occasions to perform two 24 hour trials. During the course of each 24 ...
http://doras.dcu.ie/16258/
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An examination of physical activity participation, sedentary behaviour, health, correlates of physical activity and physical activity enjoyment among Irish adolescents.
(2012)
Chadwick, Sarah
An examination of physical activity participation, sedentary behaviour, health, correlates of physical activity and physical activity enjoyment among Irish adolescents.
(2012)
Chadwick, Sarah
Abstract:
Inactivity is an epidemic among adolescents; underscoring a critical need for action. The aim of this study was to investigate physical activity (PA) participation, sedentary behaviour, physical health, correlates of PA and physical activity enjoyment. The Children’s Sports Participation and Physical Activity Study (2010) used a self-report questionnaire to measure PA participation, sedentary behaviour and demographic, psychological and environmental variables. Physical health measures were aerobic fitness, BMI, waist circumference and blood pressure (BP). Over five thousand adolescents participated in the CSPPA study (N=5397, mean age=13.85 ± 1.97, 10-18 years, 47% male). Males had a higher average of days of MVPA ≥60 per week minutes than females. Females engaged in more social/school based sedentary activities while males engaged in more technological sedentary activities. Activity decreased and sedentary behaviour increased with age. Sedentary behaviour decreased with inc...
http://doras.dcu.ie/16808/
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An examination of the relationship between participation in extra-curricular physical activity and the psychological well-being of adolescent males from disadvantaged communities
(2013)
Prior, Paul
An examination of the relationship between participation in extra-curricular physical activity and the psychological well-being of adolescent males from disadvantaged communities
(2013)
Prior, Paul
Abstract:
Extra-curricular physical activity (ECPA) has an important role to play in post-primary schools. The main aim of this study was to examine participation levels of adolescent males (aged 12-15 years) from disadvantaged communities in ECPA and to investigate the impact on the psychological well-being of those who regularly participated. The main psychological areas to be investigated were physical self-worth, perceived physical competence and enjoyment of physical activity (PA). The study also looked to identify barriers to participation in ECPA. Data were generated using self-report questionnaires, activity monitoring devices (pedometers) and focus group discussions. A longitudinal approach was adopted for this study with data being collected at Autumn, Winter and Summer during the academic year 2008/2009. Junior cycle students (N=174, male, 12-15 years of age, mean age 13.59 + .91) from four City of Dublin Vocational Education Committee (CDVEC) schools participated in the ...
http://doras.dcu.ie/19388/
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An exploration into the learning process to Independent cycling in preschool children
(2020)
Kavanagh, Jennifer
An exploration into the learning process to Independent cycling in preschool children
(2020)
Kavanagh, Jennifer
Abstract:
There is limited research exploring how children learn to cycle. The learning process to independent cycling generally occurs on an adapted bike (eg. two additional wheels, no pedals). Balance bikes have recently gained attention as a more appropriate method to learn to cycle. Currently, there is no evidence to support this argument and moreover, limited exploration into the learning process to independent cycling. Four studies in total were performed with children between 2-6 years of age. Study 1 consisted of an 8-week intervention whereby the intervention group were given balance bikes to free play on. Study 1 aimed to explore ability on a balance bike (BB) as a measure of the learning process to independent cycling and explore the relationships between ability on a BB, actual motor competence (AMC) and perceived motor competence (PMC). Furthermore, study 1 also investigated whether ability on a BB, AMC or PMC predicted how much a child would engage on the balance bike. During st...
http://doras.dcu.ie/24088/
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An interactive segmentation tool for quantifying fat in lumbar muscles using axial lumbar-spine MRI
(2015)
Antony, Joseph; McGuinness, Kevin; Welch, Neil; Coyle, Joe; Franklyn-Miller, Andrew; O&...
An interactive segmentation tool for quantifying fat in lumbar muscles using axial lumbar-spine MRI
(2015)
Antony, Joseph; McGuinness, Kevin; Welch, Neil; Coyle, Joe; Franklyn-Miller, Andrew; O'Connor, Noel E.; Moran, Kieran
Abstract:
In this paper we present an interactive tool that can be used to quantify fat infiltration in lumbar muscles, which is useful in studying fat infiltration and lower back pain (LBP) in adults. Currently, a qualitative assessment by visual grading via a 5-point scale is used to study fat infiltration in lumbar muscles from an axial view of lumbar-spine MR Images. However, a quantitative approach (on a continuous scale of 0–100%) may provide a greater insight. In this paper, we propose a method to precisely quantify the fat deposition/infiltration in a user-defined region of the lumbar muscles, which may aid better diagnosis and analysis. The key steps are interactively segmenting the region of interest (ROI) from the lumbar muscles using the well known livewire technique, identifying fatty regions in the segmented region based on variable-selection of threshold and softness levels, automatically detecting the center of the spinal column and fragmenting the lumbar muscles into smaller ...
http://doras.dcu.ie/20946/
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Analysis of the 5 iron golf swing when hitting for maximum distance
(2011)
Healy, Aoife; Moran, Kieran; Dickson, Jane; Hurley, Cillian; Smeaton, Alan F.; O'C...
Analysis of the 5 iron golf swing when hitting for maximum distance
(2011)
Healy, Aoife; Moran, Kieran; Dickson, Jane; Hurley, Cillian; Smeaton, Alan F.; O'Connor, Noel E.; Kelly, Philip
Abstract:
Most previous research on golf swing mechanics has focused on the driver club. The aim of this study was to identify the kinematic factors that contribute to greater hitting distance when using the 5 iron club. Three-dimensional marker coordinate data were collected (250 Hz) to calculate joint kinematics at eight key swing events, while a swing analyser measured club swing and ball launch characteristics. Thirty male participants were assigned to one of two groups, based on their ball launch speed (high: 52.9 + 2.1 m +- s71; low: 39.9 + 5.2 m +- s71). Statistical analyses were used to identify variables that differed significantly between the two groups. Results showed significant differences were evident between the two groups for club face impact point and a number of joint angles and angular velocities, with greater shoulder flexion and less left shoulder internal rotation in the backswing, greater extension angular velocity in both shoulders at early downswing, greater left shou...
http://doras.dcu.ie/16580/
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Association of objectively measured physical activity with vascular endothelial function in male adolescents
(2015)
Sheridan, Sinead; Moyna, Niall
Association of objectively measured physical activity with vascular endothelial function in male adolescents
(2015)
Sheridan, Sinead; Moyna, Niall
Abstract:
Purpose: Cardiovascular disease (CVD) begins in childhood primarily due to exposure to lifestyle-mediated risk factors such as inactivity and low cardiorespiratory fitness (CRF). Endothelial dysfunction is one of the earliest events in the development of CVD. Self-reported light intensity physical activity (LIPA) is positively associated with endothelial function (EF) in adolescents. The purpose of this study was to examine the relation between objectively measured physical activity (PA) and EF in healthy male adolescents. Methods: Low (n=8, VO2max = 40.4 ± 2.3 mL.kg1.min-1), moderate CRF (n=12,VO2max = 54.6 ± 3.9 mL.kg1.min-1) and high CRF (n=15, VO2max = 63.7 ± 4.0 mL.kg1.min-1) healthy males (mean age 15.77 ± 0.4; yr) participated in the study. High-resolution ultrasonography was used to assess endothelial dependent (EDD) in response to brachial artery flow mediated dilation. Participants wore a tri-axial ActivPAL accelerometer for 6 days. Total time spent in sitting, st...
http://doras.dcu.ie/20673/
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Athletic groin pain: a biomechanical diagnosis
(2015)
Marshall, Brendan; Moran, Kieran; Richter, Chris; Gore, Shane; King, Enda; Franklyn-Mil...
Athletic groin pain: a biomechanical diagnosis
(2015)
Marshall, Brendan; Moran, Kieran; Richter, Chris; Gore, Shane; King, Enda; Franklyn-Miller, Andrew; Strike, Siobhan; Falvey, Eanna
Abstract:
Introduction: Chronic athletic groin pain is commonly experienced in a range of football codes including soccer (Holmich et al. 2014) and gaelic football (Murphy et al. 2012). Much debate surrounds the specific aetiology of AGP but several authors have implicated, at least in part, abnormal movement control and loading in and around the hip and pelvis during play (Rabe et al. 2010, Pizarri et al. 2008). Movement control during change of direction cutting is of particular interest as it is this dynamic movement that is frequently associated with groin pain development (Falvey et al. 2009). No previous studies have attempted to describe the key characteristics of cutting mechanics that may be prevalent in AGP populations, that is, what are the potential biomechanical diagnoses that exist in this cohort. Purpose: To describe the key characteristics of three dimensional cutting mechanics that exist within a large cohort of AGP patients. Methods: Four hundred (n = 400) recre...
http://doras.dcu.ie/20637/
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Automated detection of atrial fibrillation using RR intervals and multivariate-based classification
(2016)
Kennedy, Alan; Finlay, Dewar D.; Guldenring, Daniel; Bond, Raymond R.; Moran, Kieran; M...
Automated detection of atrial fibrillation using RR intervals and multivariate-based classification
(2016)
Kennedy, Alan; Finlay, Dewar D.; Guldenring, Daniel; Bond, Raymond R.; Moran, Kieran; McLaughlin, James
Abstract:
Automated detection of AF from the electrocardiogram (ECG) still remains a challenge. In this study, we investigated two multivariate-based classification techniques, Random Forests (RF) and k-nearest neighbor (k-nn), for improved automated detection of AF from the ECG. We have compiled a new database from ECG data taken from existing sources. R-R intervals were then analyzed using four previously described R-R irregularity measurements: (1) the coefficient of sample entropy (CoSEn), (2) the coefficient of variance (CV), (3) root mean square of the successive differences (RMSSD), and (4) median absolute deviation (MAD). Using outputs from all four R-R irregularity measurements, RF and k-nn models were trained. RF classification improved AF detection over CoSEn with overall specificity of 80.1% vs. 98.3% and positive predictive value of 51.8% vs. 92.1% with a reduction in sensitivity, 97.6% vs. 92.8%. k-nn also improved specificity and PPV over CoSEn; however, the sensitivity of this...
http://doras.dcu.ie/21920/
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Automatic camera selection for activity monitoring in a multi-camera system for tennis
(2009)
Kelly, Philip; Ó Conaire, Ciarán; Kim, Chanyul; O'Connor, Noel E.
Automatic camera selection for activity monitoring in a multi-camera system for tennis
(2009)
Kelly, Philip; Ó Conaire, Ciarán; Kim, Chanyul; O'Connor, Noel E.
Abstract:
In professional tennis training matches, the coach needs to be able to view play from the most appropriate angle in order to monitor players' activities. In this paper, we describe and evaluate a system for automatic camera selection from a network of synchronised cameras within a tennis sporting arena. This work combines synchronised video streams from multiple cameras into a single summary video suitable for critical review by both tennis players and coaches. Using an overhead camera view, our system automatically determines the 2D tennis-court calibration resulting in a mapping that relates a player's position in the overhead camera to their position and size in another camera view in the network. This allows the system to determine the appearance of a player in each of the other cameras and thereby choose the best view for each player via a novel technique. The video summaries are evaluated in end-user studies and shown to provide an efficient means of multi-stream vis...
http://doras.dcu.ie/4707/
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Automatically detecting asymmetric running using time and frequency domain features
(2015)
Mitchell, Edmond; Ahmadi, Amin; O'Connor, Noel E.; Richter, Chris; Farrell, Evan; ...
Automatically detecting asymmetric running using time and frequency domain features
(2015)
Mitchell, Edmond; Ahmadi, Amin; O'Connor, Noel E.; Richter, Chris; Farrell, Evan; Kavanagh, Jennifer; Moran, Kieran
Abstract:
Human motion analysis technologies have been widely employed to identify injury determining factors and provide objective and quantitative feedback to athletes to help prevent injury. However, most of these technologies are: ex- pensive, restricted to laboratory environments, and can require significant post processing. This reduces their ecological validity, adoption and usefulness. In this paper, we present a novel wearable inertial sensor framework to accurately distinguish between symmetrical and asymmetrical running patterns in an unconstrained environment. The framework can automatically classify symmetry/asymmetry using Short Time Fourier Trans- form (STFT) and other time domain features in conjunction with a customized Random Forest classifier. The accuracy of the designed framework is up to 94% using 3-D accelerometer and 3-D gyroscope data from a sensor node attached on the upper back of a subject. The upper back inertial sensors data were then down-sampled by a factor of ...
http://doras.dcu.ie/20591/
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Bio-sensing textile based patch with integrated optical detection system for sweat monitoring
(2009)
Morris, Deirdre; Coyle, Shirley; Wu, Yanzhe; Lau, King-Tong; Wallace, Gordon; Diamond, ...
Bio-sensing textile based patch with integrated optical detection system for sweat monitoring
(2009)
Morris, Deirdre; Coyle, Shirley; Wu, Yanzhe; Lau, King-Tong; Wallace, Gordon; Diamond, Dermot
Abstract:
Sensors, which can be integrated into clothing and used to measure biochemical changes in body fluids, such as sweat, constitute a major advancement in the area of wearable sensors. Initial applications for such technology exist in personal health and sports performance monitoring. However, sample collection is a complicated matter as analysis must be done in real-time in order to obtain a useful examination of its composition. This work outlines the development of a textile-based fluid handling platform which uses a passive pump to gather sweat and move it through a pre-defined channel for analysis. The system is tested both in vitro and in vivo. In addition, a pH sensor, which depends on the use of a pH sensitive dye and paired emitter-detector LEDs to measure colour changes, has been developed. In vitro and on-body trials have shown that the sensor has the potential to record real-time variations in sweat during exercise.
http://doras.dcu.ie/4566/
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