Jason Bonacci

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The relationship between performance of a single-leg squat and leap landing task: moving towards a netball-specific anterior cruciate ligament (ACL) injury risk screening method

Sports Biomechanics (2018)

Aaron Fox Jason Bonacci Natalie Saunders

Field-based screening methods have a limited capacity to identify high-risk postures during netball-specific landings associated with anterior cruciate ligament (ACL) injuries. This study determined the biomechanical relationship between a single-leg squat and netball-specific leap landing, to examine the utility of including a single-leg squat within netball-specific ACL injury risk screening. Thirty-two female netballers performed single-leg squat and netball-specific leap landing tasks, during which three-dimensional (3D) kinematic/kinetic data were collected. One-dimensional statistical parametric mapping examined relationships between kinematics from the single-leg squat, and the 3D joint rotation and moment data from leap landings. Participants displaying reduced hip external rotation, reduced knee flexion, and greater knee abduction and knee internal rotation angles during the single-leg squat exhibited these same biomechanical characteristics during the leap landing (p < 0.001). Greater ankle dorsiflexion during the single-leg squat was associated with greater knee flexion during landing (p < 0.001). Ankle eversion during the single-leg squat was associated with frontal and transverse plane knee biomechanics during landing (p < 0.001). Biomechanics from the single-leg squat were associated with landing strategies linked to ACL loading or injury risk, and thus may be a useful movement screen for identifying netball players who exhibit biomechanical deficits during landing.

Squat

ACL injury

Biomechanics

Knee flexion

10.1080/14763141.2018.1498535

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Citations (15)

The effect of concurrent strength and endurance training on running performance and mechanics: a randomised controlled trial

Journal of science and medicine in sport (2019)

Danielle Trowell Aaron Fox Bill Vicenzino Natalie Saunders Jason Bonacci

Running economy

Endurance Training

Time trial

Strength Training

10.1016/j.jsams.2019.08.210

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Citations (1)

THE INFLUENCE OF MUSCULAR ACTIVATION PROFILES ON LOWER LIMB BIOMECHANICS DURING A SPORT-SPECIFIC LANDING TASK

ISBS - Conference Proceedings Archive (2015)

Aaron Fox Jason Bonacci Scott McLean Michael Spittle Natalie Saunders

The purpose of this study was to identify the muscular activation profiles utilised by female athletes during a sport-specific landing task, and examine the effects of varying profiles on biomechanical anterior cruciate ligament (ACL) injury risk factors. Muscular activation profiles were identified from electromyography data using a combination of principal component and cluster analysis methods, with the neuromuscular and biomechanical characteristics of profiles compared. Various muscular activation characteristics contributed to the presence of lower limb biomechanical patterns consistent with ACL injury risk factors. Reduction of ACL injury risk may be achieved by targeting these muscular activation characteristics via neuromuscular training programs.

Biomechanics

ACL injury

Source

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Citations (0)

Effect of Strength Training on Biomechanical and Neuromuscular Variables in Distance Runners: A Systematic Review and Meta-Analysis

Sports Medicine (2019)

Danielle Trowell Bill Vicenzino Natalie Saunders Aaron Fox Jason Bonacci

Sports medicine

Strength Training

Plyometrics

10.1007/s40279-019-01184-9

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Citations (40)

Statistical Shape Model of the Tibia.

Figshare (2023)

Meghan Keast Jason Bonacci Aaron Fox

This project provides a freely accessible three-dimensional statistical shape model (SSM) of the tibia, the coded scripts for generating a SSM and the segmented surface models of the cortical and trabecular bone. Further, it provides three potential applications for the SSM. Please see the associated read-me files for further details.
Please cite our work if you use this code or data.
Keast M, Bonacci J, Fox A. 2023. Geometric variation of the human tibia-fibula: a public dataset of tibia-fibula surface meshes and statistical shape model. PeerJ 11:e14708 https://doi.org/10.7717/peerj.14708 (2023)

10.6084/m9.figshare.20454462

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The influence of cadence and shoes on patellofemoral joint kinetics in runners with patellofemoral pain

Journal of science and medicine in sport (2017)

Jason Bonacci Michelle Hall Aaron Fox Natalie Saunders Tristan Shipsides

Cadence

Patellofemoral joint

10.1016/j.jsams.2017.09.593

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Citations (47)

The relationship between performance on a single-leg squat and leap landing task: Moving towards a netball-specific ACL injury risk screening method

Aaron Fox Jason Bonacci Scott McLean Michael Spittle Natalie Saunders

Squat

ACL injury

Source

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Citations (1)

Kinematic and Coordination Variability in Individuals With Acute and Chronic Patellofemoral Pain

Journal of Applied Biomechanics (2021)

Aaron Fox Reed Ferber Jason Bonacci

Altered gait variability occurs in those with patellofemoral pain and may be relevant to pain progression. We examined gait kinematic and coordination variability between individuals with acute and chronic patellofemoral pain and healthy controls. Eighty-three patellofemoral pain runners (37 men and 46 women) and 142 healthy controls (52 men and 90 women) ran on a treadmill while 3-dimensional lower limb kinematic data were collected. Patellofemoral pain runners were split into acute (n = 22) and chronic (n = 61) subgroups based on pain duration (< and ≥3 mo, respectively). Approximate entropy assessed continuous hip, knee, and ankle kinematic variability. Vector coding calculated coordination variability for select joint couplings. Variability measures were compared between groups using 1-way analysis of variance and post hoc comparisons with Cohen d effect sizes. The chronic patellofemoral pain subgroup displayed higher frontal plane knee kinematic variability compared with controls (P = .0004, d = 0.550). No statistically significant effects for any coordination variability couplings were identified. Minimal differences in gait variability were detected between those with acute and chronic patellofemoral pain and healthy controls.

Knee flexion

10.1123/jab.2020-0401

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Citations (10)

Australian secondary school principals', parents', and students' attitudes to prescribed school footwear guidelines

Journal of Foot and Ankle Research (2023)

Natalie Mazzella Aaron Fox Natalie Saunders Danielle Trowell Bill Vicenzino

Adolescents are often required to wear footwear that adheres to uniform guidelines at secondary school. There is a paucity of literature on factors influencing school footwear choice and what drives the development of school footwear guidelines. The aims of this study were to describe (i) current school footwear guidelines in secondary schools across Australia, (ii) factors that influence footwear choice in secondary school students and their parents, and (iii) principals, parents, and students' beliefs on factors which contribute to school footwear guidelines.An online survey was distributed to principals, secondary school students (aged 14-19 years) and their parents across Australia. The survey included questions on current school footwear guidelines, factors influencing footwear choice (for students and parents), participants beliefs on the effect footwear has on musculoskeletal health, current and previous lower limb pain, and beliefs on factors that contribute to school footwear guidelines. Parent and student responses to factors that influence their footwear choice were compared using proportional odds logistic regression. Students and parents' responses to factors influencing footwear guidelines were compared to principal responses using proportional odds logistic regression. Significance was set at an alpha of < 0.05.Eighty principals, 153 parents and 120 secondary school students responded to the survey. 96% (77/80) of principals reported that their schools have set guidelines for school footwear. 88% of principals considered comfort to be important when developing school footwear guidelines. Proportional odds logistics regression showed that parents and students were 3.4 and 4.9 times more likely, respectively, than principals to rate comfort as being important when schools develop footwear guidelines. More than 40% of students reported experiencing musculoskeletal pain, and 70% of these students reported the pain to be exacerbated when in their school shoes. Less than a third of participants considered healthcare recommendations important to the development of footwear guidelines.Nearly all principals that participated in this survey had set guidelines for school footwear. There is a discord between parents, students, and principals on the importance that factors such as comfort, play in the development of school footwear guidelines.

Odds

10.1186/s13047-023-00624-0

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Citations (3)

Should females play Australian football? You’re asking the wrong question…

Aaron Fox Jason Bonacci Samantha Hoffmann Sophia Nimphius Natalie Saunders

Anterior cruciate ligament (ACL) injuries have been a rising concern in the early years of the women’s Australian Football League (AFLW) – eliciting headlines of a “knee crisis” surrounding the league. There has been a focus on female biology as the primary factor driving the high rate of ACL injuries in the AFLW. Emphasising Australian football as being dangerous for females due to their biology may be misrepresenting a root cause of the ACL injury problem, perpetuating gender stereotypes that can restrict physical development and participation of females in the sport. We propose that that a framework addressing environmental and sociocultural factors, along with biological determinants, is required to truly challenge the ACL injury problem in the AFLW. Sports science and medicine must therefore strive to understand the whole system of female Australian football, and question how to address inequities for the benefit of the athletes.

ACL injury

10.31236/osf.io/3mqpb

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Citations (0)