Low blood glucose and fatigue accumulation at peak hours of occupational trauma in secondary industry workers.

The incidence of occupational traumatic injuries caused by human error has been reported to occur at 11:00 and 8-9 h after commencing work. Impaired attention is closely related to the incidence of these accidents. Therefore, this study aimed to clarify the changes in blood glucose, fatigue and stress response hormone levels over time among workers in a secondary industry.

Inhibitory Effects of Prolonged Focal Muscle Vibration on Maximal Grip Strength and Muscle Activity of Wrist and Extrinsic Finger Flexor Muscles.

Objective: The objective of this study was to identify effective stimulus time by quantifying the inhibitory effects of focal muscle vibration (FMV) on maximal grip strength and muscle activities of the wrist and extrinsic finger flexors.

Methods: A randomized repeated-measures design was used in this study. A total of 22 healthy volunteers (mean age, 20.

Measurement of the median nerve strain within the carpal tunnel using a capacitance-type strain sensor: A cadaver study.

Background: Direct and quantitative measurement of median nerve strain within the carpal tunnel has been difficult because of the technical limitations associated with conventional devices. We used capacitive sensors (C-stretch), which are thin and flexible, to measure the median nerve strain within the carpal tunnel.

Methods: We used 12 fresh frozen upper extremity specimens.

Quantitative examination of isolated finger flexion associated with function of the flexor digitorum superficialis.

[Purpose] Isolated finger flexion associated with function of the flexor digitorum superficialis has been qualitatively assessed using standard and modified tests. The purpose of this study was to quantify isolated finger flexion in healthy participants. [Participants and Methods] We assessed 100 volunteers (mean age: 44.

Tensile load on the flexor digitorum profundus tendon during palmar and lateral blocking exercises: Influence on blocking force and distal interphalangeal joint flexion angle.

Study Design: This is a basic science research.

Introduction: Isolating excursion of the flexor digitorum profundus (FDP) in zones I and II is common practice in the current management after flexor tendon repair. During this procedure, the proximal interphalangeal joint is sometimes fully extended with unmeasured external forces at the middle phalanx when the distal interphalangeal joint is actively flexed.

Changes in steering performance and muscle activity of the upper extremity according to the position of the spinner knob.

Introduction: A spinner knob attached to the steering wheel enables one-handed driving. However, changes in steering performance and muscle activity of the upper extremity based on the differences in the position of the knob are unknown.

Aim: To quantify changes in steering performance and their muscle activity according to the position of the knob.

Inhibitory Effects of Prolonged Vibratory Stimulus on the Maximal Voluntary Contraction Force and Muscle Activity of the Triceps Brachii: An Experimental Study.

Objective: The purpose of this study was to quantify the effects of prolonged vibratory stimulus on the maximal voluntary contraction (MVC) force and muscle activity of the triceps brachii and to clarify the effective stimulus time.

Methods: Twenty-five healthy volunteers with a mean age of 21.4 years participated.

Effect of fingernail length on the hand dexterity.

[Purpose] The fingernails allow for increased sensory perception at the finger pulp, and contribute to the accurate picking up of small objects. The purpose of the present study was to clarify the effect of fingernail length on hand dexterity using subjects' own fingernails. [Subjects and Methods] The hand sizes and fingernail configurations of 38 young healthy volunteers (eighteen males and twenty females) were measured.

Effect of wrist and finger flexion in relation to strain on the tendon origin of the extensor carpi radialis brevis: A cadaveric study simulating stretching exercises.

Background: Stretching exercises based on wrist flexion-ulnar deviation with elbow extension, forearm pronation, and additional index or middle finger flexion have been used to stretch the wrist extensors for lateral epicondylitis. The purpose of this study was to quantify the strain on the tendon origin of the extensor carpi radialis brevis in cadaver specimens during these stretching exercises.

Methods: We used 8 fresh frozen/thawed cadaveric upper extremities.

Effect of simultaneous stretching of the wrist and finger extensors for lateral epicondylitis: a gross anatomical study of the tendinous origins of the extensor carpi radialis brevis and extensor digitorum communis.

Background: Pulling the wrist into flexion with the elbow in extension and forearm in pronation has been used as the stretching technique of wrist extensors for lateral epicondylitis. Simultaneous stretching of the fingers in addition to the wrist flexion has also been applied. However, the mechanism of this simultaneous stretching has not been clarified.