Objective To study the criterion-related validity of simple muscle strength test (SMST) indicators and assess whole body muscle strength in Chinese children aged 10 to 12 years old. Methods Two hundred and forty children were equally divided into four groups in different genders and residences. The SMST indicators (hand-grip, knee bent push-up, back muscle strength, sit-up, leg muscle strengt...

condylar dislocation is not an uncommon condition and occurs when the condyles are displaced anterior to the articular eminence and are unable to reduce back into the glenoid fossa. long-standing dislocations are difficult to treat with the conservative methods and usually need surgical intervention. in this paper, a long-standing dislocation treated by bilateral extra-oral ramus osteotomy is d...

Background: Although the standing long jump (SLJ) is a popular physical fitness assessment, it lacks an updated criterion-reference standard. This study generated the first normative SLJ test data for Chinese aged 8 18. Methods: From September 2005 to December 2011, comprehensive physical fitness assessments were conducted on 12,712 school students. The SLJ performances were significantly diffe...

Purpose To evaluate the relationships between objectively measured physical activity and physical fitness among preschool children. Methods A total of 346 participants (201 boys and 145 girls) aged 3.5-5.5 years (M = 4.5 yr, SD = 0.47) from Shanghai, China, completed physical fitness assessments, including triceps skinfold thickness (TSFT), grip strength, tennis throwing, sit and reach test, ...

Background: The standing vertical jump (SVJ) and standing broad jump (SBJ) are athletic assessment and talent identification tools. Limited biomechanical comparison of the styles exists. The aim of this project was to assess the differences in kinetics and kinematics between SVJ and SBJ. Materials and Methods: Ten semi-professional soccer players (22.4±3.1 years) volunteered to participate in t...

Standing Broad Jump (SBJ) is a field test used to assess leg power. This study aims determine the reliability, validity, and develop norm reference among adolescents. The evidence of need establish in particular population support interpretation scores. involved 60 subjects six raters for reliability validity. 417 development. ICC, test-retest, Pearson Correlation were reliability. Independent ...

The iPostureTM is a commercially available device which claims to improve posture. It is designed to deliver a vibrotactile buzz if the wearer slouches. We present the finding of a preliminary study evaluating the user experience of wearing it. Contrary to company claims, users found that it did not show them how to improve their posture but the buzzing did improve their body awareness.

purpose the purpose of this study was to examine the differences in physical fitness, physical activity, and sedentary activities among 7 to 11 year old boys with varying body mass index in ardabil, iran. methods the sample consisted of 766 boys who participated in eight weight bearing (1 mile walk/run, sit ups, standing long jump, vertical jump, shuttle run 4 × 10 m, 30-meter sprint, pull ups,...

We study inference in structural models with a jump in the conditional density, where location and size of the jump are described by regression curves. Two prominent examples are auction models, where the bid density jumps from zero to a positive value at the lowest cost, and equilibrium job-search models, where the wage density jumps from one positive level to another at the reservation wage. ...