Hand grasping requires the transformation of sensory signals to hand movements. Neurons in area F5 (ventral premotor cortex) represent specific grasp movements (e.g., precision grip) as well as object features like orientation, and are involved in movement preparation and execution. Here, we examined how F5 neurons represent context-dependent grasping actions in macaques. We used a delayed gras...

This cross-sectional study aimed to assess the impact of age and gender on 4 measures of grip and pinch force of well elderly community dwellers and to provide normative values. The hypotheses were that age and gender affect pinch and grip force and that these 2 factors might interact. Hand strength of 224 seniors 65-92 years old was tested. Grip and pinch force decreased in successively older ...

We propose a novel grip-type master hand called MeisterGRIP that measures grip force in terms of a force vector distribution. This device is expected to allow intuitive robot manipulation using vision-based haptic-sensing technology. Furthermore, it can be used for general-purpose manipulation and is tolerant to individual differences in hand size and grasping posture. We constructed MeisterGRI...

Hand grip strength is a useful measurement for individuals with rheumatoid arthritis, since this disease is often associated with functional anomalies of the hands and a consequent reduction in muscular strength. Thus, the standardization of the test protocol is important in relation to make reproducible and reliable studies. The aim of this systematic review was to verify the parameters associ...

PURPOSE OF REVIEW Grip strength measured by dynamometry is well established as an indicator of muscle status, particularly among older adults. This review was undertaken to provide a synopsis of recent literature addressing the clinical and prognostic value of hand-grip dynamometry. RECENT FINDINGS Numerous large-scale normative grip strength projects have been published lately. Other recent ...

Subjective rating is one of the alternatives to quantify hand force exertion. The rating of the Borg CR-10 scale has been used to quantify the perception of physical exertion. An experiment was conducted to test the grip force of male subjects at subjective ratings on the CR-10 scale under hand-posture conditions. It was found that the subjects applied a higher grip force than they perceived at...

An efficient uncoupling process is generally considered to have a protective effect on the aging muscle by slowing down its age-related decay. Genetic polymorphisms in the Uncoupling Protein 3 (UCP3) gene, whose product is mainly expressed in skeletal muscle, were suggested to be associated with hand grip (HG) performances in elderly populations. Considering the population specificity of the qu...

BACKGROUND Many countries are experiencing an aging workforce with women workers making up a growing proportion. Workplaces often require employees to complete lifting tasks that require the ability of the hand to grasp an implement (coupling). The National Institute for Occupational Safety and Health (NIOSH) has developed an equation for manual lifting tasks hoping to minimize the potential fo...

OBJECTIVE To determine reliability of maximal grip strength, muscle coordination and muscle endurance. To compare these parameters in young adults with unilateral cerebral palsy and healthy subjects. To evaluate the correlation of these variables with functional activities. SUBJECTS Twenty-six healthy subjects and 26 young adults with unilateral cerebral palsy recruited from a cohort study in...