Purpose: This study was accomplished to investigate the electromyographic activity of 3 plyometric exercises (tuck jump and single leg hop in sagittal and frontal planes) to find out the appropriate procedures for strengthening biceps femoris and gluteus medius muscles. Methods: The kind of study is applied and data were collected from the supervised exercises of 15 male athletes without i...

A real-time muscle fatigue monitoring system was developed to quantitatively detect the muscle fatigue of subjects during cycling movement, where a fatigue progression measure (FPM) was built-in. During the cycling movement, the electromyogram (EMG) signals of the vastus lateralis and gastrocnemius muscles in one leg as well as cycling speed are synchronously measured in a real-time fashion. In...

To build a personal computer based interactive musculoskeletal anatomic atlas using Visible Man data set, we developed a semi-automated segmentation program by using an intelligent scissors approach and a shape-based interpolation. Manual contour extractions at 3mm slice intervals and shape-based interpolations of inter-slices of the musculoskeletal structures of the lower extremity were carrie...

Lower extremity sagittal kinematic and kinetic data are summarized alongside electrical muscle activities during single-leg landing trials completed in contrasting external load and landing height conditions. Nineteen subjects were analyzed during 9 landing trials in each of 6 experimental conditions computed as percentages of subject anthropometrics (bodyweight: BW and subject height: H; BW, B...

Models of the musculoskeletal system depend on accurate muscle architecture inputs. To date, models of the human lower extremity are based on the muscle architecture of either two (Friederich and Brand, 1990) or three (Wickiewicz et al., 1983) cadaveric specimens of unknown age, gender, and size. As models become more sophisticated, accurate depiction of interand intra-muscular architectural fe...

OBJECTIVES To evaluate the effects of whole-body vibration (WBV) on skeletal muscle activity and power performance of the upper body during decline bench press exercise at different loads. METHODS Forty-seven healthy young and active male students volunteered. Each performed dynamic decline bench press repetitions with and without WBV (50 Hz, 2.2 mm) applied through a hamstring bridge exercis...

Background. Peripheral nerve injury treatment options are limited to primary nerve repair, nerve grafting, and tendon transfers. In this case, a large suitable donor site was easily accessible and delayed grafting was indicative of poor prognosis. Case Description. A 25-year-old soldier presented to a military hospital in Afghanistan following a roadside bomb attack. The patient had a medial sh...

Objectives: Lower extremity muscles are critical for maintaining dynamic balance and athletic performance. Fatigue of these may affect balance. It is unclear whether fatigue in a particular muscle group can more than that other groups. This study was conducted to evaluate compare the effects 5 groups on volleyball players. Methods: Fifteen healthy male players separately performed Star Excursio...

objectives: the purpose of this study was to investigate the effects of whole body vibration training (wbvt) and creatine (cr) supplementation on lower extremity performance and balance in elderly males. methods & materials: in this semi-experimental study, twenty two eligible males from the members of an elderly daycare center with more than 60 years of age were enrolled and were divided into ...