Biomechanics

Biomechanics applies principles of mechanics to living systems, addressing how forces, motions and material properties interact within biological structures. At its core are two complementary perspectives: kinematics, which describes how bodies move—tracking position, velocity and acceleration without reference to causative forces—and kinetics, which examines the forces and moments that produce or resist those motions. In humans, the interplay between skeletal levers, muscular actuators and connective tissues gives rise to coordinated activities from posture maintenance to dynamic tasks such as walking, jumping or lifting. Central to this integration is the transmission of ground reaction forces through the lower limbs, the generation of internal joint moments by muscle–tendon units and the deformation of soft tissues under load. Modern biomechanics harnesses laboratory-based motion-capture systems, force platforms and wearable inertial sensors alongside computational modelling—from inverse dynamics to finite-element analysis—to quantify internal loads, joint kinematics and tissue stresses. These insights inform clinical rehabilitation, preventive ergonomics, sports performance optimisation and the design of prosthetic and orthotic devices. By linking fundamental mechanics with biological structure and control, biomechanics elucidates mechanisms of injury, guides therapeutic intervention and underpins innovations that enhance human health and function.

Research from Nature Portfolio

A participatory-ergonomics framework has been developed to assess musculoskeletal risk among underground machinery operators. By combining observational posture analysis with fuzzy-logic modelling of work-process and tool-use factors, researchers created a Musculoskeletal-Disorders Index that accurately discriminates high-risk tasks and prioritises interventions. The approach integrates operator feedback, expert weighting and statistical validation to identify critical combinations of postural hazards and tool characteristics, offering a data-driven roadmap for occupational health programmes in heavy-equipment environments.

Structural equation modelling has been applied to investigate personal, habitual and work-related factors in dumper-truck operators. Survey data from over 200 operators revealed that personal characteristics (for example age and anthropometry) and specific work demands (such as vibration exposure and awkward postures) both contribute significantly to the prevalence of work-related musculoskeletal disorders. The validated model quantifies the relative influence of each factor and supports targeted strategies—ranging from equipment redesign to rest-break scheduling—to mitigate risk among mobile-equipment drivers.

Biomechanics publication trend

The graph below shows the total number of articles in biomechanics across all publications each year (not limited to Nature Index journals).

Technical terms

Biomechanics: The study of mechanical principles—forces, moments and motion—applied to biological systems.

Kinematics: Description of motion (position, velocity, acceleration) without reference to underlying forces.

Kinetics: Analysis of forces and moments that cause or resist movement in a mechanical system.

Ground reaction force: The force exerted by the ground on the body during foot contact, comprising impact and propulsive components.

Inertial measurement unit (IMU): A wearable sensor combining accelerometers and gyroscopes to record three-dimensional movement kinematics outside the laboratory.

References

1. Concepts of Biomechanics.
2. Promoting safety of underground machinery operators through participatory ergonomics and fuzzy model analysis to foster sustainable mining practices. Scientific Reports (2024).
3. Structural equation modelling of work related musculoskeletal disorders among dumper operators. Scientific Reports (2023).
4. Incidence of Running-Related Injuries Per 1000 h of running in Different Types of Runners: A Systematic Review and Meta-Analysis. Sports Medicine (2015).
5. Estimation of Vertical Ground Reaction Forces and Sagittal Knee Kinematics During Running Using Three Inertial Sensors. Frontiers in Physiology (2018).
6. Ground reaction force metrics are not strongly correlated with tibial bone load when running across speeds and slopes: Implications for science, sport and wearable tech. PLOS ONE (2019).