Before determination of the isokinetic peak torques, subjects performed a warm-up of 2 muscle actions at 60°·s-1 at approximately 50% of maximum effort. After the warm-up and a rest period of 2 minutes, subjects performed a knee extensor and flexor concentric/concentric protocol of 5 maximal repetitions at the angular velocity of 60°·s-1. The same testing ABT-737 cost protocol was used for both the right and left legs to determine peak torque independent of the knee angle. Using the Cybex software, the greatest value was obtained during either
test during both pre- and post-training and was subsequently used for the statistical analysis. Magnetic resonance imaging (MRI) of the right thigh and upper arm was performed using a standard body coil and a 2.0 Tesla Scanner (Elscint Prestige, Haifa, Israel) to determine muscle CSA [15] (Figure 1). The MRI equipment was calibrated prior to CSA determination of the first subject on each testing day using the manufacture’s procedures. The right thigh and upper arm were scanned with subjects in a supine position. During Selleckchem Talazoparib the thigh scan the legs were relaxed and straight,
feet parallel to each other and legs immobilized with pads and straps around both feet. For the upper arm scan, the arm was placed as close as possible to the magnetic iso-center aligned at the subject’s side with the palm up and taped in position to the scanner bed surface. Figure 1 Magnetic resonance images of the right thigh and upper arm for a single subject pre- and post-training. Thigh and arm scan were obtained using axial T1-weighted spin-echo images with repetition time of 750 ms, echo time of 20 ms, 230 × 290 matrix resolution and number of excitations of two. Thigh images were obtained perpendicular to the femur starting at the proximal femoral epiphysis (tangential to its proximal SPTLC1 end) and proceeding distally toward the knee joint. The slice thickness
was 8 mm with no gap (forty slices) with a 45 × 45 cm field of view (FOV). Upper arm images were obtained perpendicular to the humerus starting at the proximal humeral epiphysis (tangential to its proximal end) proceeding distally toward the elbow joint. The slice thickness was 6 mm with a 1.2 mm interslice gap (forty slices) with a FOV of 40 × 32 or 40 × 40 cm depending on the arm’s size. Both the thigh and arm scan were obtained using axial T1-weighted spin-echo images with repetition time of 750 ms, echo time of 20 ms, 230 × 290 matrix resolution and number of excitations of two. Thigh images were obtained perpendicular to the femur starting at the proximal femoral epiphysis (tangential to its proximal end) and proceeding distally toward the knee joint. The slice thickness was 8 mm with no gap (forty slices) with a 45 × 45 cm field of view (FOV).