Methods Fifteen patients with midfoot arthritis aged between 20 and 60 years participated in the study. Foot function index (FFI) was assessed to evaluate pain before and after the walking activity. Lower leg muscle activity, GRF and gait cycle time during walking were measured under two conditions: “shoe only”, and “shoe with FCF insole”. Electromyography (EMG) activities of the tibialis anter...

The objective of this study was to correlate the effects of muscle force on the movement of the center of pressure (COP) for increased clinical utility of the COP measurement. Five fresh frozen cadaveric specimens were used to apply a 49 N sinusoidal muscle force to isolated or grouped extrinsic ankle muscles, and a constant ankle joint reaction force at different tibial positions. The muscle f...

Ground reaction force (GRF) measurements are commonly reported in bodyweight (BW) units. Division normalization of this type reduces the contribution of body size differences to the variance among subjects. Several researchers have noted that peak force measurements can remain significantly correlated with BW, even after normalization. Most recently, Wannop et al. [1] examined GRF components an...

This study investigated the relationship between front foot contact (FFC) ground reaction forces (GRF) during delivery stride, lower-limb strength, eccentric dexterity and power, ball release speed (BRS) among pace bowlers. Thirteen high-level male bowlers performed double single leg drop landings; isometric mid-thigh pull; countermovement jump; bowling (two-over spell measuring BRS FFC GRF). T...

There is a paucity of available biomechanical kinetic data comparing shod and barefoot conditions in children. Do children wearing footwear have comparable gait velocity, ground reaction forces (GRF), spatiotemporal parameters, propulsive braking impulses when compared to walking barefoot? Seventy-five were divided into four groups: Group 1 females aged 4–9 years old (n = 29). 2 3–5 16). 3 male...

Compared to pure carbon nanotube (CNT) foam (CF) and graphene (GrF), the CNT/graphene composite show enhanced mechanical properties, using coarse-grained molecular dynamics method, tensile compressive properties corresponding deformation mechanism of several typical foams were studied. The CNT coating could enhance bending resistance graphene, based on CNT-coated flakes, (CCGF) is constructed, ...

This paper describes a two-part study evaluating the use of growth hormone (GH) response to infusions of somatostatin (SRIF) and GH-releasing factor (GRF) as an indicator of genetic merit in dairy cattle. The first part of the study involved the development of a standard test procedure. This was achieved in two sub-trials, the first testing three SRIF doses, 0·6, 3·0 and 15 μg/kg per h, given o...

Force platforms are used extensively to measure force and power output during countermovement jump (CMJ). The purpose of this study was to examine measurement reliability and validity of commonly used performance measurements derived from ground reaction force (GRF)-time data during CMJ and the influence of sampling at different frequencies. Twenty-four men performed 2 trials of CMJ on a force ...