Norms for hand grip strength of healthy children are presented. Sex and age specific centiles for age 5 to 18 years have been determined using a portable strain gauge dynamometer with an accuracy of 0.5 N. The test group comprised 1417 healthy, urban school children from a middle class suburb of Brisbane. Mean maximum grip strength (of four tests, two with each hand) and mean peak grip strength...

When moving objects with a precision grip, fingertip forces normal to the object surface (grip force) change in parallel with forces tangential to the object (load force). We investigated whether voluntary wrist actions can affect grip force independent of load force, because the extrinsic finger muscles cross the wrist. Grip force increased with wrist angular speed during wrist motion in the h...

Recent studies have shown that articulatory gestures are systematically associated with specific manual grip actions. Here we show that executing such actions can influence performance on a speech-categorization task. Participants watched and/or listened to speech stimuli while executing either a power or a precision grip. Grip performance influenced the syllable categorization by increasing th...

objectives: aim of this study is to investigate the initial effect of taping technique on wrist extension and grip strength and pain of individuals with tennis elbow. methods: fifteen patients (10 men and 5 women with 42.53 years) on their dominant arm participated in this study. outcome measures were wrist extension and grip strength and pain taken before and immediately after application of t...

background: fear of falling is not only a risk factor for falls, but it is also an important clinical predictor of functional decline in older adults. this study identified sex differences in fear of falling and related factors in older adults with low grip strength. methods: the data of 902 older adults from the 2012 korean national survey, conducted as a research project by the korea employme...

Cadmium-induced glycine-rich protein (cdiGRP) is a cell wall-associated factor that increases callose levels in plant vasculature. To better understand the cdiGRP/callose regulation system, we identified a tobacco protein, GrIP (cdiGRP-interacting protein, GrIP), that associates with cdiGRP and localizes at the plant cell wall. Constitutive overexpression of GrIP enhanced the accumulation of th...

The standard methods for testing grip strength can cause pain and inhibit accuracy of results when persons have rheumatic diseases. The first purpose of this study was to gather data on grip strength of typical children 3 to 7 years of age using the modified sphygmomanometer technique. Modified grip strength testing requires the person to squeeze an inflated sphygmomanometer (blood pressure dev...

Adaptation of fingertip forces to friction at the grasping surface is necessary to prevent use of inadequate or excessive grip forces. In the current study we investigated the effect of blocking tactile information from the fingertips noninvasively on the adaptation and efficiency of grip forces to surface friction during precision grasp. Ten neurologically intact subjects grasped and lifted an...