Sarah Dillon - Academia.edu (original) (raw)

Papers by Sarah Dillon

Research paper thumbnail of Comparison of impact accelerations between injury-resistant and recently injured recreational runners

PLOS ONE

Introduction/Purpose Previous injury has consistently been shown to be one of the greatest risk f... more Introduction/Purpose Previous injury has consistently been shown to be one of the greatest risk factors for running-related injuries (RRIs). Runners returning to participation following injury may still demonstrate injury-related mechanics (e.g. repetitive high impact loading), potentially exposing them to further injuries. The aim of this study was to determine if the magnitude (Peakaccel) and rate of loading (Rateaccel) at the tibia and sacrum differ between runners who have never been injured, those who have acquired injury resistance (runners who have not been injured in the past 2 years) and those who have been recently injured (RRI sustained 3–12 months ago). Methods Runners completed an online survey capturing details of their RRI history over the previous 2 years. Never injured runners were matched by sex, quarterly annual mileage and typical training speed to runners who had acquired injury resistance and to runners who had been recently injured. Differences in Peakaccel an...

Research paper thumbnail of Running related Injuries of Irish runners

The popularity of recreational running continues to grow nationally. Previous international resea... more The popularity of recreational running continues to grow nationally. Previous international research has demonstrated a very high risk of running related injuries (RRIs) in recreational runners. These injuries pose a barrier to continued training, as well as to the physical and mental health benefits associated with running. Currently, there is a paucity of epidemiological information on Irish recreational runners. Therefore, the aim of this study is to gain an understanding of the prevalence, location, type and severity of RRI’s in recreational runners in Ireland.

Research paper thumbnail of The association between previous running related injuries and isometric muscle strength among recreational and novice runners

Running has many health benefits, but injuries associated with running can result in considerable... more Running has many health benefits, but injuries associated with running can result in considerable health and economic burdens. This is particularly important given the reported injury incidence of between 18.2 to 92.4% Previous injury is the primary risk factor related to running injuries. As injured athletes often display deficits in neuromuscular strength, and these weaknesses may be evident at the time of return to sport it is thought that persistent residual weakness following injury may predispose an athlete to subsequent injury. To date, studies have mainly compared the neuromuscular strength of currently injured and uninjured runners. More information is needed to explore potential differences in strength among healthy runners with a history of injury, which may allow clinicians to address weaknesses and ultimately better direct treatment.

Research paper thumbnail of Risk Factors for Injuries in Runners: A Systematic Review of Foot Strike Technique and Its Classification at Impact

Orthopaedic Journal of Sports Medicine, 2021

Background: It has been suggested that foot strike technique (FST) at initial contact is related ... more Background: It has been suggested that foot strike technique (FST) at initial contact is related to running-related injuries (RRIs). Purpose: To explore the relationship between FST and RRIs. Study Design: Systematic review; Level of evidence, 3. Methods: A systematic electronic search was performed using MEDLINE, PubMed, SPORTDiscus, Scopus, and Web of Science databases. Included were studies published in the English language that explored the relationship between FST and RRIs between January 1960 and November 2020. Results were extracted and collated. The Grading of Recommendations, Assessment, Development and Evaluation approach was applied to synthesize the quality of evidence. Results: We reviewed 13 studies exploring the relationship between FST and RRIs. Of these, 6 studies reported FST categorically (foot strike pattern [FSP]), and 7 reported continuous measures (foot contact angle, ankle flexion angle, and strike index). Three of the 6 studies looking at categorical FSP fou...

Research paper thumbnail of Identification of an optimal principal components analysis threshold to describe jump height accurately using vertical ground reaction forces

In functional principal component analysis (fPCA) a threshold is chosen to define the number of r... more In functional principal component analysis (fPCA) a threshold is chosen to define the number of retained principal components, which corresponds to the amount of preserved information. A variety of thresholds have been used in previous studies and the chosen threshold is often not evaluated. The aim of this study is to identify the optimal threshold that preserves the information needed to describe a dependent variable accurately. To find an optimal threshold, a neural network was used to predict jump height from vertical ground reaction force curve measures generated by a fPCA at different thresholds. The findings indicate that a threshold from 99% to 99.9% (6-11principal components) is optimal for describing jump height, as these thresholds generated significantly lower jump height prediction errors than other thresholds.

Research paper thumbnail of Do Injury-Resistant Runners Have Distinct Differences in Clinical Measures Compared with Recently Injured Runners?

Medicine & Science in Sports & Exercise

Introduction: Although lower extremity muscle strength, joint motion and functional foot alignmen... more Introduction: Although lower extremity muscle strength, joint motion and functional foot alignment are commonly used, time-efficient clinical measures that have been proposed as risk factors for running related injuries (RRIs), it is unclear if these factors can distinguish injury-resistance in runners.

Research paper thumbnail of Comparison of impact accelerations between injury-resistant and recently injured recreational runners

PLOS ONE

Introduction/Purpose Previous injury has consistently been shown to be one of the greatest risk f... more Introduction/Purpose Previous injury has consistently been shown to be one of the greatest risk factors for running-related injuries (RRIs). Runners returning to participation following injury may still demonstrate injury-related mechanics (e.g. repetitive high impact loading), potentially exposing them to further injuries. The aim of this study was to determine if the magnitude (Peakaccel) and rate of loading (Rateaccel) at the tibia and sacrum differ between runners who have never been injured, those who have acquired injury resistance (runners who have not been injured in the past 2 years) and those who have been recently injured (RRI sustained 3–12 months ago). Methods Runners completed an online survey capturing details of their RRI history over the previous 2 years. Never injured runners were matched by sex, quarterly annual mileage and typical training speed to runners who had acquired injury resistance and to runners who had been recently injured. Differences in Peakaccel an...

Research paper thumbnail of Running related Injuries of Irish runners

The popularity of recreational running continues to grow nationally. Previous international resea... more The popularity of recreational running continues to grow nationally. Previous international research has demonstrated a very high risk of running related injuries (RRIs) in recreational runners. These injuries pose a barrier to continued training, as well as to the physical and mental health benefits associated with running. Currently, there is a paucity of epidemiological information on Irish recreational runners. Therefore, the aim of this study is to gain an understanding of the prevalence, location, type and severity of RRI’s in recreational runners in Ireland.

Research paper thumbnail of The association between previous running related injuries and isometric muscle strength among recreational and novice runners

Running has many health benefits, but injuries associated with running can result in considerable... more Running has many health benefits, but injuries associated with running can result in considerable health and economic burdens. This is particularly important given the reported injury incidence of between 18.2 to 92.4% Previous injury is the primary risk factor related to running injuries. As injured athletes often display deficits in neuromuscular strength, and these weaknesses may be evident at the time of return to sport it is thought that persistent residual weakness following injury may predispose an athlete to subsequent injury. To date, studies have mainly compared the neuromuscular strength of currently injured and uninjured runners. More information is needed to explore potential differences in strength among healthy runners with a history of injury, which may allow clinicians to address weaknesses and ultimately better direct treatment.

Research paper thumbnail of Risk Factors for Injuries in Runners: A Systematic Review of Foot Strike Technique and Its Classification at Impact

Orthopaedic Journal of Sports Medicine, 2021

Background: It has been suggested that foot strike technique (FST) at initial contact is related ... more Background: It has been suggested that foot strike technique (FST) at initial contact is related to running-related injuries (RRIs). Purpose: To explore the relationship between FST and RRIs. Study Design: Systematic review; Level of evidence, 3. Methods: A systematic electronic search was performed using MEDLINE, PubMed, SPORTDiscus, Scopus, and Web of Science databases. Included were studies published in the English language that explored the relationship between FST and RRIs between January 1960 and November 2020. Results were extracted and collated. The Grading of Recommendations, Assessment, Development and Evaluation approach was applied to synthesize the quality of evidence. Results: We reviewed 13 studies exploring the relationship between FST and RRIs. Of these, 6 studies reported FST categorically (foot strike pattern [FSP]), and 7 reported continuous measures (foot contact angle, ankle flexion angle, and strike index). Three of the 6 studies looking at categorical FSP fou...

Research paper thumbnail of Identification of an optimal principal components analysis threshold to describe jump height accurately using vertical ground reaction forces

In functional principal component analysis (fPCA) a threshold is chosen to define the number of r... more In functional principal component analysis (fPCA) a threshold is chosen to define the number of retained principal components, which corresponds to the amount of preserved information. A variety of thresholds have been used in previous studies and the chosen threshold is often not evaluated. The aim of this study is to identify the optimal threshold that preserves the information needed to describe a dependent variable accurately. To find an optimal threshold, a neural network was used to predict jump height from vertical ground reaction force curve measures generated by a fPCA at different thresholds. The findings indicate that a threshold from 99% to 99.9% (6-11principal components) is optimal for describing jump height, as these thresholds generated significantly lower jump height prediction errors than other thresholds.

Research paper thumbnail of Do Injury-Resistant Runners Have Distinct Differences in Clinical Measures Compared with Recently Injured Runners?

Medicine & Science in Sports & Exercise

Introduction: Although lower extremity muscle strength, joint motion and functional foot alignmen... more Introduction: Although lower extremity muscle strength, joint motion and functional foot alignment are commonly used, time-efficient clinical measures that have been proposed as risk factors for running related injuries (RRIs), it is unclear if these factors can distinguish injury-resistance in runners.