Quantifying how functional and structural personal factors influence biomechanical exposures in paramedic lifting tasks

DP Armstrong, TAC Beach, SL Fischer - Ergonomics, 2024 - Taylor & Francis
It is unknown how structural (sex, stature, body mass) and functional (strength, flexibility)
personal factors influence lifting strategy in paramedic work. We explored whether variance …

Differential effects of sex on upper body kinematics and kinetics during fatiguing, Asymmetric lifting

MR Cardoso, DP Armstrong, SL Fischer, WJ Albert - Applied Ergonomics, 2024 - Elsevier
This study quantified sex-specific biomechanical adaptations to fatigue in asymmetric lifting.
Twenty-one females and fifteen males performed a prolonged asymmetric lifting protocol …

Understanding individual differences in lifting mechanics: Do some people adopt motor control strategies that minimize biomechanical exposure

DP Armstrong, SL Fischer - Human Movement Science, 2020 - Elsevier
The movement strategy an individual uses to complete a lift can influence the resultant
biomechanical exposure on their low back. We hypothesize that some lifters may choose a …

Application of principal component analysis to forward reactive stepping: Whole-body movement strategy differs as a function of age and sex

DP Armstrong, SP Pretty, TB Weaver, SL Fischer… - Gait & Posture, 2021 - Elsevier
Background Differences in reactive stepping strategy to recover balance have been
investigated as a function of age and sex, but to date have been measured using discrete …

The Influence of Contextual and Theoretical Expertise on Generic and Occupation-Specific Lifting Strategy

DP Armstrong, TAC Beach, SL Fischer - Human Factors, 2024 - journals.sagepub.com
Objective To determine whether (i) low back loads and/or (ii) kinematic coordination patterns
differed across theoretical expert, contextual expert and novice groups when completing …

Towards the use of 2D video-based markerless motion capture to measure and parameterize movement during functional capacity evaluation

SM Remedios, SL Fischer - Journal of Occupational Rehabilitation, 2021 - Springer
Purpose The objective of this study was to determine the agreement of kinematic parameters
calculated from motion data collected via a 2D video-based pose-estimation (markerless …

Detecting subject-specific fatigue-related changes in lifting kinematics using a machine learning approach

SJ Hawley, A Hamilton-Wright, SL Fischer - Ergonomics, 2023 - Taylor & Francis
Individual responses to fatigue have been observed in lifting kinematics, suggesting a
subject-specific approach is necessary for fatigue identification. One-class support vector …

[HTML][HTML] Determining whether biomechanical variables that describe common 'safe lifting'cues are associated with low back loads

DP Armstrong, JB Davidson, SL Fischer - Journal of Electromyography and …, 2024 - Elsevier
Lift technique training programs have been implemented to help reduce injury risk, but the
underlying content validity of cues used within these programs is not clear. The objective of …

[HTML][HTML] Muscle dynamics analysis by clustered categories during jogging in patients with anterior cruciate ligament deficiency

H Li, H Huang, S Zhang, S Ren, Q Rong - BMC Musculoskeletal Disorders, 2023 - Springer
Background Patients with anterior cruciate ligament (ACL) deficiency (ACLD) tend to have
altered lower extremity dynamics. Little is known about the changes in dynamic function and …

Sensitivity of principal component analysis outcomes to data pre-processing conditions when quantifying trial-to-trial variability in whole-body kinematics

DP Armstrong, SL Fischer - Computer Methods in Biomechanics …, 2024 - Taylor & Francis
This study investigated whether modes of variance in trial-to-trial whole-body kinematic
variability identified by principal component analysis (PCA) were consistent across data pre …