Most studies about human responses to mechanical vibrations involve whole-body vibration and vibration applied perpendicularly to the tendon or muscle. The aim of the present study was to verify the effects of mechanical vibration applied in the opposite direction of muscle shortening on maximal isometric strength of the flexor muscles of the elbow due to neural factors. Conventional isometric ...

Muscle cross-sectional area of the quadriceps femoris (CSAQF), maximal isometric strength (handgrip test and unilateral knee extension/flexion), the shape of isometric force-time curves, and power-load curves during concentric and stretch-shortening cycle (SSC) actions with loads ranging from 15 to 70% of one repetition maximum half-squat (1RMHS) and bench-press (1RMBP) were examined in 26 midd...

OBJECTIVE The aim of this study was to measure lower extremity isometric strength in patients with juvenile idiopathic arthritis (JIA) and to evaluate the usefulness of an adjustable dynamometer chair in the clinical work. METHODS Twenty-five children with JIA and 25 healthy, age-matched controls, aged 7-12 (mean age 10.1) were studied. The isometric maximal strength of knee and ankle muscles...

OBJECTIVE To demonstrate the muscle strength characteristics of shoulder internal and external rotators and the effects of isokinetic exercise on muscle activity in patients with adhesive capsulitis. DESIGN Cohort study with control subjects. PARTICIPANTS Eight patients with adhesive capsulitis and 8 controls. METHODS Maximal isometric and isokinetic strength tests of shoulder internal an...

STUDY DESIGN Cross sectional study. PURPOSE To evaluate characteristics of back muscle strength in patients scheduled for lumbar fusion surgery. OVERVIEW OF LITERATURE Little is known regarding muscle strength in patients with symptomatic lumbar degenerative diseases who require fusion surgery. METHODS Consecutive 354 patients scheduled for posterior lumbar interbody fusion due to symptom...

The purpose of this study was to examine the acute effects of maximal concentric vs. eccentric exercise on the isometric strength of the elbow flexor, as well as the biceps brachii muscle electromyographic (EMG) responses in resistance-trained (RT) vs. untrained (UT) men. Thirteen RT men (age: 24 ± 4 years; height: 180.2 ± 7.7 cm; body weight: 92.2 ± 16.9 kg) and twelve UT men (age: 23 ± 4 year...

introduction: according to the importance of the back extensor muscle strength in postmenopausal women, this study aimed to determine the relationship between strength and changes in the thickness of back extensor muscles during isometric contraction in healthy and osteoporotic postmenopausal women. material and methods: 42 volunteer postmenopausal women according to their bone mineral density ...

Purpose: The proper neuromuscular recruitment patterns of hip and knee muscles are essential for dynamic stabilization of the knee. According to the kinematic chain, weakness in the performance of one motor segment can affect other segments of motion. Thus, the aim of this study was to compare the isometric strength of selected muscles of lower extremities in the hyperpronated foot with t...