منابع مشابه
Leg extension is an important predictor of paretic leg propulsion in hemiparetic walking.
Forward propulsion is a central task of walking that depends on the generation of appropriate anterior-posterior ground reaction forces (AP GRFs). The AP impulse (i.e., time integral of the AP GRF) generated by the paretic leg relative to the non-paretic leg is a quantitative measure of the paretic leg's contribution to forward propulsion and is variable across hemiparetic subjects. The purpose...
متن کاملRestless arm symptoms as an extension of restless leg syndrome.
SIR—It is not widely appreciated, but up to half of all patients with restless leg syndrome can have unwanted movements and sensations in the upper extremities [1]. I give here a brief illustrative case history. An 88-year-old gentleman with restless leg syndrome diagnosed 3 years earlier presented complaining of being unable to sleep at night due to feelings of prickling and pain in both arms,...
متن کاملMuscle recruitment patterns during the prone leg extension
BACKGROUND The prone leg extension (PLE) is a clinical test used to evaluate the function of the lumbopelvis. It has been theorized that a normal and consistent pattern of muscle activation exists. Previous research has found two contradictory patterns of muscle activation during PLE in normal individuals. One study shows an almost simultaneous activation of the lower erector spinae and hamstri...
متن کاملارتباط بین دو تست straight leg raiseو passive knee extension دراندازه گیری طول عضله همسترینگ
زمینه و هدف: عضله همسترینگ عضله ای است دو مفصلی که از یک سر به لگن و از سر دیگر به زانو اتصال می یابد، لذا کوتاهی این عضله بر روی مفاصل بالایی و پایینی تأثیر می گذارد. با توجه به شیوع کوتاهی این عضله اندازه گیری صحیح طول آن مهم می باشد. تستهای مختلفی جهت سنجش طول عضله همسترینگ وجود دارد. در تست slr)) straight leg raise به دلیل تأثیر وضعیت لگن روی زاویه slr احتمال خطا در اندازه- گیری وجود دارد و...
متن کاملLeg extension power and walking speed in very old people living independently.
BACKGROUND Leg extension power can be determined as the product of the force and velocity of movement. Its association with maximal walking speed was studied in 131 80- and 85-year-old men and women. METHODS Leg extension power was measured with the help of a sledge ergometer in a sitting position using a facilitated "jump test." The participant was attached by belts to a sliding chair on rai...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1969
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1539821