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.     

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.     

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.     

Dual-energy-CT of hypervascular liver lesions in patients with HCC: investigation of image quality and sensitivity

Objective  

To investigate dual-energy CT of hypervascular liver lesions in patients with HCC.     

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.     

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).     

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.     

Magnetic resonance imaging findings in acute myocarditis and correlation with immunohistological parameters

Objective  

To evaluate the role of MRI in diagnosing acute myocarditis by correlation with immunohistological parameters.     

Does amifostine have radioprotective effects on salivary glands in high-dose radioactive iodine-treated differentiated thyroid cancer

Objectives  

To assess the effects of amifostine on salivary glands in radioactive iodine-treated differentiated thyroid cancer.     

Thrombolysis and thromboaspiration for acute thromboembolic occlusion in the upper extremity

Purpose  

To report technical aspects of thrombolysis and thromboaspiration for acute thromboembolic occlusion in the upper extremity.     

Prediction of range of motion 2?years after mobile-bearing total knee arthroplasty: PCL-retaining versus PCL-sacrificing

Purpose  

This study evaluated the changes in the range of motion (ROM) with time postoperatively.     

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.     

Non-emergency small bowel obstruction: assessment of CT findings that predict need for surgery

Objective  

To identify CT findings predictive of surgical management in non-emergency small bowel obstruction (SBO).     

The added value of quantitative multi-voxel MR spectroscopy in breast magnetic resonance imaging

Objective  

To determine whether quantitative multivoxel MRS improves the accuracy of MRI in the assessment of breast lesions.     

Is bone scintigraphy necessary in the initial surgical staging of chondrosarcoma of bone?

Objective  

To assess the value of whole-body bone scintigraphy in the initial surgical staging of chondrosarcoma of bone.     

Utility of diffusion-weighted imaging in the diagnosis of acute appendicitis

Objectives  

To evaluate the value of diffusion-weighted MRI (DWI) in the diagnosis of acute appendicitis.     

Comparison of 4 cm Z-axis and 16 cm Z-axis multidetector CT perfusion

Objective  

The aim of the study was to compare 4 cm with 16 cm Z-axis coverage in the assessment of brain CT perfusion (CTP) using. 320 slice multidetector CT