Évolution chez l'homme de l'Insulin-Like Growth Factor-I dans le liquide interstitiel musculaire suite à un exercice en résistance

Introduction

The impact of resistance exercise on the growth of the vastus lateralis was assessed through interstitial microdialysis measurement of free Insulin-like Growth Factor-I at +3 h30, +4 h50 and +6 h after exercise in 4 healthy subjects.

Results

We observed 3 h30 after exercise an interstitial increase in 3 over 4 subjects, and thereafter a progressive decrease. In the mean time, free or total plasma concentrations did not change.

Conclusion

Resistance exercise seemed to induce an early increase of muscle interstitial free Insulin-like Growth Factor-I in order to initiate muscle growth by an autocrine – paracrine way.     

Criterion-related validity of four clinical tests used to measure hamstring flexibility in professional futsal players

Objective

To examine the criterion related validity of the sit-and-reach test (SR), toe touch test (TT), modified sit-and-reach test (MSR) and back-saver sit-and-reach test (BSSR) for estimating hamstring flexibility measured through the passive straight leg raise test (PSLR) in professional futsal players.

Design

Correlation laboratory study.

Setting

Controlled laboratory environment.

Participants

One hundred and three futsal players (55 males age 26 ± 4 years, 48 females age 23 ± 5 years).

Main outcome measures

Two trials of SR, TT, MSR, BSSR (left and right) and PSLR right and left (hamstring criterion measure) in a randomized order.

Results

Regression analysis was performed to examine the association of SR, TT, MSR and BSSR with PSLR in both males and females separately. In males, only MSR test had moderate association criterion with PSLR (R² = 0.57). In females, SR (R² = 0.86), TT (R² = 0.85), MSR (R² = 0.53) and average BSSR (R² = 0.82) were associated with PSLR.

Conclusions

SR, TT, MSR and BSSR had moderate criterion related validity for estimating hamstring flexibility in female but not male professional futsal players. The authors recommend that researchers, clinicians, and physical therapists adopt one angular test as a measure of hamstring muscle length in futsal players.     

Modular MR-compatible lower leg exercise device for whole-body scanners

Purpose  

To develop a modular MR-compatible lower leg exercise device for muscle testing using a clinical 3 T MR scanner.     

Differentiation between benign and malignant orbital tumors at 3-T diffusion MR-imaging

Introduction  

To differentiate between malignant and benign orbital tumors at 3-T diffusion MR imaging.     

Partial volume correction incorporating Rb-82 positron range for quantitative myocardial perfusion PET based on systolic-diastolic activity ratios and phantom measurements

Background  

Quantitative myocardial PET perfusion imaging requires partial volume corrections.     

What is the optimal b value in diffusion-weighted MR imaging to depict prostate cancer at 3T?

Objective  

To determine an optimal b value to visualise prostate cancer using diffusion-weighted magnetic resonance imaging at 3 T.     

Diagnostic accuracy and clinical impact of imaging-guided needle biopsy of renal masses. Retrospective analysis on 150 cases

Objective  

To review our method of perform needle biopsies of renal masses.     

Image-guided spinal injection procedures in open high-field MRI with vertical field orientation: feasibility and technical features

Objective  

We prospectively evaluated the feasibility and technical features of MR-guided lumbosacral injection procedures in open high-field MRI at 1.0 T.     

Tumour thickness in oral cancer using an intra-oral ultrasound probe

Objectives  

To investigate tumour-thickness measurement with an intra-operative ultrasound (US) probe.     

Imaging characteristics of tenosynovial and bursal chondromatosis

Objectives  

Our purpose was to identify imaging characteristics of tenosynovial and bursal chondromatosis.     

Demonstration of intrahepatic accumulated microbubble on ultrasound represents the grade of hepatic fibrosis

Objectives  

To examine the feasibility of perflubutane-based ultrasound for grading hepatic fibrosis.     

Radiologists’ responses to inadequate referrals

Objectives  

To investigate radiologists’ responses to inadequate imaging referrals.     

Ultrasound features of tophi in chronic tophaceous gout

Objective  

To describe the different and lesser-known ultrasound features of tophi in chronic tophaceous gout.     

Bony and soft tissue landmarks of the ACL tibial insertion site: an anatomical study

Purpose  

To identify and describe reliable landmarks for tibial tunnel placement in anatomical ACL reconstruction.     

Waffle-cone technique with Solitaire™ AB Remodeling Device: endovascular treatment of highly selected complex cerebral aneurysms

Introduction  

To evaluate patients with complex aneurysms who underwent waffle-cone stent-assisted coil embolization.     

Posterior dislocation in total knee replacement: a price for deep flexion?

Introduction  

Post-cam dislocation in TKA is a rare complication after posterior stabilized TKA.     

Treatment of severe vertebral body compression fractures with percutaneous vertebroplasty

Objective  

Evaluate the efficacy of percutaneous vertebroplasty for severe vertebral body compression fractures.     

Radiologic findings of osteoarticular infection in paracoccidioidomycosis

Objective  

To report the radiological abnormalities of osteoarticular involvement in paracoccidioidomycosis (PCM).     

Micronucleus evaluation for determining the chromosomal breakages after radionuclide synovectomy in patients with hemophilia

Objective  

To investigate the genotoxic effects of ⁹⁰Y and ¹⁸⁶Re in patients with hemophilia who were undergoing radionuclide synovectomy (RS) procedure in the last 3 years.