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.     

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.     

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.     

Ultrasound features of tophi in chronic tophaceous gout

Objective  

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

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.     

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.     

Radiologic findings of osteoarticular infection in paracoccidioidomycosis

Objective  

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

Improvement of MR cholangiopancreatography (MRCP) images after black tea consumption

Objective  

Evaluation of the efficacy of black tea as the negative oral contrast agent in MRCP.     

The long-term clinical and MRI results following eccentric calf muscle training in chronic Achilles tendinosis

Purpose  

To evaluate the long-term results following eccentric calf-muscle training in patients with chronic Achilles tendinopathy.     

Prospective comparison of T2w-MRI and dynamic-contrast-enhanced MRI, 3D-MR spectroscopic imaging or diffusion-weighted MRI in repeat TRUS-guided biopsies

Objectives  

To compare T2-weighted MRI and functional MRI techniques in guiding repeat prostate biopsies.     

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.     

Diagnostic value of 3D contrast-enhanced magnetic resonance angiography in Takayasu's arteritis--a comparative study with digital subtraction angiography

Objective  

To assess the diagnostic value of 3D CEMRA in TA compared with DSA.     

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.     

Acute Thrombotic Mesenteric Ischemia: Primary Endovascular Treatment in Eight Patients

Introduction  

The purpose of this study was to evaluate our experience with initial percutaneous transluminal angioplasty (PTA) ± stenting as valuable options in the acute setting.     

Intra-individual, randomised comparison of the MRI contrast agents gadobutrol and gadoterate in imaging the distal lower limb of patients with known or suspected osteomyelitis, evaluated in an off-site blinded read

Objective  

To prove that 1.0 M gadobutrol provides superior contrast enhancement in suspicion of osteomyelitis of the feet compared with 0.5 M gadoterate.     

Self-gating MR imaging of the fetal heart: comparison with real cardiac triggering

Purpose  

To investigate the self-gating technique for MR imaging of the fetal heart in a sheep model.     

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Purpose  

To evaluate the effect of the number of readers on the statistical results in peripheral MRA.