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A strain can occur as a result of improper body mechanics with any activity (e.g., contact sports, lifting heavy objects) that can induce mechanical trauma or injury.. Generally, the muscle or tendon overstretches and is placed under more physical stress than it can withsta
Environmental, operational, or design factors can all negatively impact a worker or user; examples include whole-body or hand/arm vibration, poor lighting, or poorly designed tools, equipment, or workstations. Some of the common body regions where injuries may occur include: Muscles or ligaments of the lower back; Muscles or ligaments of the neck
Musculoskeletal injuries can affect any part of the human body including; bones, joints, cartilages, ligaments, tendons, muscles, and other soft tissues. [1] Symptoms include mild to severe aches, low back pain, numbness, tingling, atrophy and weakness. [1] [2] These injuries are a result of repetitive motions and actions over a period of time. [6]
Sports biomechanics is the quantitative based study and analysis of athletes and sports activities in general. It can simply be described as the physics of sports. Within this specialized field of biomechanics, the laws of mechanics are applied in order to gain a greater understanding of athletic performance through mathematical modeling, computer simulation and measurement.
Internal forces between the particles that make up a body do not contribute to changing the momentum of the body as there is an equal and opposite force resulting in no net effect. [3] The linear momentum of a rigid body is the product of the mass of the body and the velocity of its center of mass v cm. [1] [4] [5]
A body is usually considered to be a rigid or flexible part of a mechanical system (not to be confused with the human body). An example of a body is the arm of a robot, a wheel or axle in a car or the human forearm. A link is the connection of two or more bodies, or a body with the ground.
Deformity can be caused by a variety of factors: Arthritis and other rheumatoid disorders; Chronic application of external forces, e.g. artificial cranial deformation Chronic paresis, paralysis or muscle imbalance, especially in children, e.g. due to poliomyelitis or cerebral palsy
When vehicles collide, the damage increases with the relative velocity of the vehicles, the damage increasing as the square of the velocity since it is the impact kinetic energy (1/2 mv 2) which is the variable of importance. Much design effort is made to improve the impact resistance of cars so as to minimize user injury.