Total Work Changes at Different Angular Velocities during Isokinetic Exercise.
نویسندگان
چکیده
منابع مشابه
MMG and EMG responses during fatiguing isokinetic muscle contractions at different velocities.
The purpose of this study was to determine mechanomyographic (MMG) and electromyographic (EMG) responses of the superficial quadriceps muscles during repeated isokinetic contractions in order to provide information about motor control strategies during such activity, and to assess uniformity in mechanical activity (MMG) between the investigated muscles. Ten adults performed 50 maximal concentri...
متن کاملThe relationship of Motor-unit activation to isokinetic muscular contraction at different contractile velocities.
This investigation was designed to examine 1) the relationship between motor-unit activation (as recorded by integrated EMG) and speed of contraction and 2) the relationship between mechanical work, power output, peak torque, average torque, and both velocity of movement and integrated electromyographic recordings in the elbow flexor muscles. A series of isokinetic contractions of the elbow fle...
متن کاملTest-retest reliability of lower limb isokinetic endurance in COPD: A comparison of angular velocities
BACKGROUND The purpose of this study was to determine and compare the test-retest reliability of quadriceps isokinetic endurance testing at two knee angular velocities in patients with chronic obstructive pulmonary disease (COPD). METHODS After one familiarization session, 14 patients with moderate to severe COPD (mean age 65±4 years; forced expiratory volume in 1 second (FEV1) 55%±18% predic...
متن کاملTotal power output generated during dynamic knee extensor exercise at different contraction frequencies.
A novel approach has been developed for the quantification of total mechanical power output produced by an isolated, well-defined muscle group during dynamic exercise in humans at different contraction frequencies. The calculation of total power output comprises the external power delivered to the ergometer (i.e., the external power output setting of the ergometer) and the "internal" power gene...
متن کاملNo reserve in isokinetic cycling power at intolerance during ramp incremental exercise in endurance-trained men.
During whole body exercise in health, maximal oxygen uptake (V̇o2max) is typically attained at or immediately before the limit of tolerance (LoT). At the V̇o2max and LoT of incremental exercise, a fundamental, but unresolved, question is whether maximal evocable power can be increased above the task requirement, i.e., whether there is a "power reserve" at the LoT. Using an instantaneous switch fr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physical Therapy Science
سال: 1996
ISSN: 0915-5287,2187-5626
DOI: 10.1589/jpts.8.39