The aim of the present study was to investigate the effects of a short-term in-season plyometric training program on power, agility and knee extensor strength. Male soccer players from a third league team were assigned into an experimental and a control group. The experimental group, beside its regular soccer training sessions, performed a periodized plyometric training program for six weeks. T...

Wheelchair locomotion is an important form of mobility for many individuals with spinal cord injury. However, manual wheelchair propulsion can lead to upper-limb pain and can be very inefficient. This has led investigators to apply biomechanics to the study of wheelchair use. The objectives of this study were (1) to determine the frequency content of the motion of both hands during two speeds o...

Wrestling requires strength of the upper and lower body musculature which is critical for the athletic performance. Evaluation of the adolescent's skeletal muscle is important to understand body movement, especially including those involved in sports. Strength, power and endurance capacity are defined as parameters of skeletal muscle biomechanical properties. The isokinetic dynamometer is an im...

Abstract Background: Patients with CHD exhibit reduced isometric muscle strength and mass; however, little is known how these parameters relate. Therefore, the aim was to investigate relation between limb mass for patients in comparison age- sex-matched control subjects. Methods: Seventy-four (35.6 ± 14.3 years, women n = 22) 74 matched controls were included. Isometric elbow flexion, knee exte...

Pollution from vehicles is a serious concern for the environment and human health. Vehicle emission regulations worldwide have limits pollutants such as hydrocarbons, CO, NOx. The measurements are typically conducted at engine dynamometers (heavy-duty engines) sampling tailpipe or chassis (light-duty vehicles) dilution tunnel. latest focused on actual emissions of road. Greenhouse gases (GHG) (...

[Purpose] The purpose of the present study was to compare the reliability of 2 hand-held dynamometers (HHD-1, 2) with different designs, by performing isometric knee muscle extension measurements two times each. [Subjects] The subjects were 40 young healthy adults. [Methods] The reliability of the measurements was examined using Bland-Altman analysis. [Results] Bland-Altman analysis found a fix...

This study was the first to explore the potential role of the myostatin (GDF8) pathway in relation to muscle strength and estimated muscle cross-sectional area in humans using linkage analysis with a candidate gene approach. In young male sibs (n = 329) 11 polymorphic markers in or near 10 candidate genes from the myostatin pathway were genotyped. Muscle mass was estimated by anthropometric mea...

CONTEXT The use of isokinetic dynamometers playing an important role in different settings of sports and medicine. Therefore, a high reliability of these devices is required. OBJECTIVE The aim of this study was to examine the inter-session reliability of the dynamometer BTE PrimusRS regarding to the isolated single-joint exercises extension / flexion of the knee and elbow for isokinetic testi...

Although strength is one of the important characteristics of a normal hand, this factor is not given enough attention in reconstructive surgery as compared to other parameters of motion and sensibility. This paper presents the results of a study on strength in functional adaptations of the normal hand. A baseline of normal grip and pinch strength was obtained by testing a group of one hundred h...

Cutting forces are strongly associated with the mechanics of cutting process. Hence, machining measurements very important to investigate process, and numerous methods have been applied. Nowadays, a dynamometer is most popular tool for measurements. However, natural frequency has direct impact on accuracy measured in Therefore, few dynamometers appropriate reliable measure at high frequencies. ...