The avian pectoralis muscle must produce a varying mechanical power output to achieve flight across a range of speeds (1-13 m s(-1)). We used the natural variation in the power requirements with flight speed to investigate the mechanisms employed by cockatiels (Nymphicus hollandicus) to modulate muscle power output. We found that pectoralis contractile function in cockatiels was generally conse...

Objective To assess the tendon reconstruction technique for total rupture of the pectoralis major muscle using an adjustable cortical button. Methods Prospective study of 27 male patients with a mean age of 29.9 (SD = 5.3 years) and follow-up of 2.3 years. The procedure consisted of autologous grafts taken from the semitendinosus and gracilis tendons and an adjustable cortical button. Patient...

M-Protein (165 kDa) is a structural constituent of myofibrillar M-band in striated muscle. We generated a monoclonal antibody which recognized a 165-kDa protein from chicken pectoralis muscle in immunoblot analysis and stained the M-band under immunofluorescence microscopy. By screening a lambda gt11 cDNA library from chicken embryonic pectoralis muscle with this antibody, we isolated a cDNA cl...

[Purpose] This study performed to investigate the effect of elastic band exercise program on the posture of subjects with rounded shoulder and forward head posture. [Subjects and Methods] The body length, forward shoulder angle, craniovertebral angle, and cranial rotation angle of participants (n=12) were measured before and after the exercise program. Furthermore, the thicknesses of the pector...

The purpose of this study was to investigate the effects of exercise order on electromyographic activity in different muscle groups among youth men with experience in strength training. Three sets of 8 RM were performed of each exercise in two sequences order: (a) sequence A: bench press, chest fly, shoulder press, shoulder abduction, close grip bench press and lying triceps extension; (b) sequ...

OBJECTIVE to evaluate the results of the use of the pectoralis major flap in the reconstruction of head and neck surgeries. METHODS we conducted a retrospective study with data bank analysis and review of medical records of patients with head and neck cancer operated at the Discipline of Head and Neck Surgery, Surgery Department, São Paulo Holy Home of Mercy, using the pectoralis major flap f...

We have studied the acute and subchronic oral toxicities of Justicia pectoralis J hydroalcoholic extract in Wistar rats. In acute test, both sexes of adult Wistar rats were given single po dose of J. pectoralis extract at 2000 mg/kg. Following euthanasia 14 days later, mortality and signs of toxicity were not observed. In subchronic test, J. pectoralis extract was po administered to both sexes ...

BACKGROUND In the treatment of long thoracic nerve palsy with pectoralis major transfer, it remains unknown whether direct transfer of the pectoralis to the scapula or indirect transfer with an interpositional graft provides superior outcomes. METHODS A 3-tiered study was performed to gain a comprehensive understanding. (1) A survey of the membership of the American Shoulder and Elbow Surgeon...

Transfer of pectoralis major has evolved as the most favoured option for the management of the difficult problem of irreparable tears of subscapularis. We describe our experience with this technique in 30 patients divided into three groups. Group I comprised 11 patients with a failed procedure for instability of the shoulder, group II included eight with a failed shoulder replacement and group ...