Search results for "DICS"

Progressive femoral cortical and cancellous bone density loss after uncemented tapered-design stem fixation

2010

Background Aseptic implant loosening and periprosthetic bone loss are major problems after total hip arthroplasty (THA). We present an in vivo method of computed tomography (CT) assisted osteodensitometry after THA that differentiates between cortical and cancellous bone density (BD) and area around the femoral component.Method Cortical and cancellous periprosthetic femoral BD (mg CaHA/mL), area (mm2) and contact area between the prothesis and cortical bone were determined prospectively in 31 patients 10 days, 1 year, and 6 years after uncemented THA (mean age at implantation: 55 years) using CT-osteodensitometry.Results 6 years postoperatively, cancellous BD had decreased by as much as 41%…

Selection of printed curriculum materials in physical education: Recontextualizing pedagogical knowledge

2011

This paper examines how teachers select printed curriculum materials in PE in Spanish secondary schools through Bernstein’s theory of the pedagogic device. The sample recruited were 310 secondary school PE teachers (210 male and 100 female) belonging to the Valencian community in Spain. The mean age of participants was 37.7 (SD 8.7) and the average of PE teaching years was 11.8 (SD 8.87). Teachers responded individually to an interview-administered questionnaire. Results showed teachers were highly involved in choosing the curriculum materials they use, and a slight predominance for teachers to prepare the PE lesson first and then to choose appropriate materials to develop it. Main selecti…

RECRUITMENT OF BICEPS FEMORIS MUSCLE REGIONS AT DIFFERENT RUNNING SPEEDS

2017

Background The majority of hamstring strain injuries (HSIs) occur in the late swing phase of high-speed running when hamstrings work eccentrically. The proximal region of the biceps femoris (BF) seems to be the most common site of injury. Elongation of the fascicles in eccentric contractions is higher in the proximal region compared to the distal region of BF, but the neural background to this phenomenon is not clear. Objective To examine the region-specificity of BF muscle activity at different running speeds. Design Observational study. Running speeds were randomized. Setting Laboratory, amateur level. Participants Football players without acute injury/illness, and without HSI history wer…

Are schools able to improve the physical fitness of children and adolescents?

2013

Proximal Tibiofibular Joint Reconstruction With Autogenous Semitendinosus Tendon Graft

2013

Isolated and chronic anterolateral instability of the proximal tibiofibular joint (TFJ) is an uncommon condition, generally linked to an unrecognized or unhealed dislocation of the TFJ. Clinically, abnormal anterior movement of the head of the fibula is detected. In acute injuries conservative management should be preferred, whereas surgical treatment have been advocated in patients with chronic TFJ instability. Authors describe a new surgical reconstruction technique for chronic instability of the proximal TFJ using an autogenous semitendinosus tendon. The graft is passed through fibular and tibia tunnels and fixed with 2 interference screws. The tibial tunnel is reamed from the posterolat…

Physical Education Pedagogy: an analysis of research published in Spanish journals (2005–2014)

2016

ABSTRACTBackground: The majority of reviews related to Physical Education Pedagogy (PEP) refer to the English-speaking world. Some of these assert the need to obtain more data and provide reviews of what has been investigated in languages other than English to be able to assess the current state of the field internationally.Purpose: The aim of this study was to identify, categorise, and analyse articles on PEP published in Spanish sport science journals during the last decade (2005–2014).Participants and setting: A total of 13 journals were selected: 8 were indexed in the Scopus databases, and 5 were added based on expert judgement due to their importance in the field of Spanish PEP.Researc…

Effect of training on aerobic capacity of female athletes differing in muscle fibre composition

1983

Abstract The effects of endurance training were studied in two groups of female cross‐country skiers who differed in muscle fibre composition. The ST‐group (n = 10) had 56–76% slow twitch (ST) muscle fibres and the FT‐group (n= 10) 40–55% ST fibres in the m. vastus lateralis. During a four‐month period, the subjects trained on the average 81 km per week. The intensive training (heart rate 0–15 beats per min below maximum) averaged 8.5 km per week. The differences in training between the two groups were not significant. The ST‐group significantly increased their cycling maximum oxygen uptake (C max, 4.6%, P <0.01) and the anaerobic threshold (AT, 2.8%, P <0.01) during the training period whe…

Anatomic variation of the vertebral artery

2016

Multifibrillar bundles of a self-assembling hyaluronic acid derivative obtained through a microfluidic technique for aortic smooth muscle cell orient…

2018

A hyaluronic acid derivative that is able to physically crosslink in a saline aqueous environment was employed for the production of fibers with a mean diameter of 50 μm using a microfluidic technique. The microfibers were collected in a tailored rotating collector and assembled to form multifibrillar bundles. The orientation of the microfibers on the collected bundles was evaluated by microCT analysis. The bundles were biofunctionalized by physical addition of fibronectin or chemical tethering of a cyRGDC peptide to achieve control of Aortic Smooth Muscle Cell (AoSMC) attachment, elongation and alignment. The mechanical performances of these bundles were evaluated by elongation tests, rela…

Nanostructured lead acid battery for electric vehicles applications

2017

This paper presents an innovative lead acid battery, based on nanostructured active materials. Both charging time and specific energy are greatly enhanced in comparison with commercial lead acid battery. Starting from the extremely valuable performances of the nanostructured battery, also a circuital model, for application in electric vehicle traction, has been specifically developed. The circuital model has demonstrated that an enhanced nanostructured battery allows an increase of traveled distance by electric vehicles.