Prior investigations have been primarily conducted in a laboratory to examine the effects of
the smartphone use on the neck and head positions, whether these results are applicable to …

An essential input to the musculoskeletal (MS) trunk models that estimate muscle and spine
forces is kinematics of the thorax, pelvis, and lumbar vertebrae. While thorax and pelvis …

The study aimed to map instantaneous centers of rotation (ICRs) of lumbar motion segments
during a functional lifting task and examine differences across segments and variations …

Non-invasive methods have traditionally been used to assess spine positioning and range
of motion. Recently, the use of prediction models derived from external stick markers and …

Segmental apportionment of lumbar (L2–S1) rotation is a critical input parameter for
musculoskeletal models and a candidate metric for clinical assessment of spinal health, but …

Although numerous studies have documented back muscle flexion-relaxation phenomenon
(FRP) in standing postures, few studies have examined the FRP in various seated lumbar …

Severities and types of under-body blast lumbar injuries maybe associated with loading
severity and amount of torso-borne mass, such as personal protective equipment. The …

This experimental study investigated the effects of load magnitude and movement speed on
lumbar vertebral kinematics during lifting task performance. Ten participants performed …

The incidence of problems related to rachialgiae is so frequent and usual that it must be
studied as if it were an epidemic and social disease (Knoplich, 2003). Instruments that …

Background: Epidemiological studies have shown that low back pain after load-carrying is
an important and costly disorder in muscolo-skeletal system. Lumbar curvature is an …