Last edited by Goshakar
Thursday, October 22, 2020 | History

3 edition of Quadriceps-hamstring ratios for isotonic and isokinetic measurements found in the catalog.

Quadriceps-hamstring ratios for isotonic and isokinetic measurements

Quadriceps-hamstring ratios for isotonic and isokinetic measurements

  • 311 Want to read
  • 34 Currently reading

Published .
Written in English

    Subjects:
  • Muscle strength.,
  • Leg -- Muscles.,
  • Muscle contraction.

  • Edition Notes

    Statementby Douglas Armstrong.
    The Physical Object
    FormatMicroform
    Paginationv, 33 leaves
    Number of Pages33
    ID Numbers
    Open LibraryOL16972431M

    Sep 01,  · The aims of the present investigation were (a) to evaluate the effect of eccentric quadriceps training in patients with unilateral patellofemoral pain and (b) to compare the effect of eccentric and concentric quadriceps training in patients with bilateral patellofemoral pain. Fifteen patients (9 male and 6 female, aged 17–36 years with a mean of years) participated in this study. Nine Cited by: What matters most is the ratio of hamstring strength to that of its antagonist muscle group, the quadriceps. I will refer to this ratio as hamstring:quad. Many people have strong quads that overpower their hamstrings. This imbalance is often the root cause of ducklakebooks.com: Doug Dupont.

    In unadjusted analyses, quadriceps strength ratio was highest for the isometric test at 40° of knee flexion while the isometric test at 70° of knee flexion and the isotonic test did not differ significantly on quadriceps strength ratio (P = ). After adjustment for knee pain during strength testing, there was no statistically significant Author: Yong-Hao Pua, Cheryl Lian-Li Poon, Felicia Jie-Ting Seah, Benjamin F. Mentiplay, Choo-Lye Ho, Foh-Li. ratios were significantly different, and all were approximately equal in magnitude (Table 1). Therefore, any of the three methods could be used to evaluate the bilateral muscle strength imbalance of athletes. For H/Q ratios, however, the isokinetic method produced significantly greater values at all speeds of measurement than.

    Hamstrings to quadriceps peak torque ratios diverge between sexes with increasing isokinetic angular velocity with a total of subjects ( male, female). Males demonstrated a significant correlation between H/Q ratio and isokinetic 27, 28 The articles retrieved varied by subject population and method of measurement of Cited by: ric, isotonic, isokinetic concentric, and isokinetic eccentric). Perform- ance values were recorded for the yard dash, vertical jump, and agility run. The mean of each group of force variables was then corre- lated with the group mean for each performance variable (yard dash Volume 14 Number 3 September 1 JOSPT.


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Quadriceps-hamstring ratios for isotonic and isokinetic measurements Download PDF EPUB FB2

Quadriceps-hamstring ratios for isotonic and isokinetic measurements. [Douglas Armstrong] Book, Archival Material: All Authors / Contributors: Add tags for "Quadriceps-hamstring ratios for isotonic and isokinetic measurements".

Be the first. Similar Items. Isokinetic hamstrings/quadriceps ratios: Normal values and reproducibility in sport students ratios during isokinetic testing at different velocities. Isokinetic measurements of knee. Mar 01,  · We compared functional and conventional isokinetic hamstring: quadriceps strength ratios and examined their relation to knee joint angle and joint angular velocity.

Peak and angle-specific (50°, 40°, and 30° of knee flexion) moments were determined during maximal concentric and eccentric muscle contractions (10° to 90° of motion; 30 and Cited by: Comparison of hamstring/quadriceps ratio between isoinertial and isokinetic measurements Article (PDF Available) in Isokinetics and exercise science 21(2) · June with Reads.

Comparison of Isotonic and Isokinetic measurements of extension/flexion strength and Quadriceps-Hamstring ratio Conference Paper (PDF Available) · January with 42.

Mar 21,  · The aim of this study was to compare isokinetic quadriceps and hamstring muscle strength in patients following anterior cruciate ligament (ACL) reconstruction who received either hamstring (HT) or quadriceps (QT) tendon autografts at two time intervals within the first year after surgery.

One hundred twenty-four patients, 81 males (age ± years) and 43 females (age Cited by: Isotonic quadriceps-hamstring strength ratio of patients with knee osteoarthritis and apparently healthy controls. isotonic, and isokinetic testing devices. Biomechanical factors were. Isokinetic Hamstrings:Quadriceps Ratios in Intercollegiate Athletes.

Q ratio provides a quantitative measurement of torque from agonist and antagonist muscle contraction surrounding the knee joint.

15 This ratio has also been examined as a possible screening tool for predisposition to injury. 23 When the knee is injured. Comprehensive isokinetic knee measurements and quadriceps tendon evaluations in footballers for assessing functional performance. during isokinetic measurements with the ratios calculated.

Sep 01,  · Isokinetic moment ratios of the hamstrings (H) and quadriceps (Q) muscle groups, and their implication in muscle imbalance, have been investigated for more than three decades.

The conventional concentric H/Q ratio with its normative value of Cited by: May 23,  · Isokinetic concentric knee extension and flexion muscle strength measurements were conducted using a Technogym REV dynamometer (Gambettola, Italy).

We used a standardized test protocol and recorded concentric knee extension and flexion torques Newton meter (N·m) and joint angles with a Hz sampling frequency (6,8,9,17).Cited by: 4. Quadriceps and hamstring isokinetic strength and electromyographic activity measured at different ranges of motion: A reproducibility study it does involve some risk when assessing patients impaired with specific disorders of the quadriceps, hamstring or the knee joint.

Isokinetic measurements of knee muscles were conducted using the Cited by: Isokinetic Hamstring: Quadriceps Strength Ratio in Males and Females: Implications for ACL Injury Meghan Eileen Lyons University of North Florida Measurements of the forces absorbed by the body in jumping activities are recorded at anywhere from three to 14 times the body weight.

ThisCited by: 2. static test, and Isotonic testing which measures strength at the strongest portion of the ROM and is also effected by speed of movement. Isokinetic resistance will accommodate to pain, fatigue, changes in length tension curve and biomechanical leverage of the muscle allowing for safe efficient exercise and testing.

Because of. This study was conducted to compare the isotonic quadriceps-hamstring (Q/H) ratios of patients with knee osteoarthritis (OA) and apparently healthy control subjects. The relationships between Q/H ratio and each of height, total body weight, age and Quetelet index of both groups were also investigated.

Isometric, Isotonic, and Isokinetic Torque Variations in Four Muscle Groups Through a Range of Joint Motion JOSEPH J. KNAPIK, JAMES E. WRIGHT, ROBERTA H. MAWDSLEY, and JOANNE BRAUN The purpose of this investigation was to describe and examine variations in maximal torque produced by knee extension, knee flexion, elbow extension, and.

Functional hamstring to quadriceps ratio in football players Injuries and therefore injury prevention is a big topic in football, especially with regards to knee injuries (10, 34 - see references).

The (fast and repeated) knee extensions during kicking (also shown in its correlation with isokinetic measurements (26)), seem to have an effect on. Background and Objectives: This study considered the use of a generalized additive multilevel model to describe the joint-angle-specific functional hamstring to quadriceps ratio (H:Q ratio) in the knee, using all of the available truly isokinetic data within the ducklakebooks.com: Lucas A.

Sousa, André L. Soares, Ahlan B. Lima, Roberto R. Paes, Luiz R. Nakamura, Humberto M. Isokinetic Hamstrings/Quadriceps Ratios: Normal Values and Reproducibility in Sport Students ratios given in knee testing by use of the numeric reports of modern computerized isokinetic equipment.

The HQ ratios are based on the following parameters: peak torque, total work, and average power. permissions, book requests, submissions and Cited by: Comparison of conventional hamstring/quadriceps ratio between genders in level-matched A cross-sectional study design was used to compare an isometric H/Q ratio and functional isokinetic ratio Brown and Weir, 15 the subjects were asked to sit with 90° hip flexion and an initial knee flexion of ° during the isokinetic measurements Cited by: 1.

ISOKINETIC CONCENTRIC QUADRICEPS AND HAMSTRING NORMATIVE DATA FOR ELITE COLLEGIATE AMERICAN FOOTBALL PLAYERS PARTICIPATING IN THE NFL SCOUTING COMBINE JOHN E. ZVIJAC,1 TODD A. TORISCELLI,2 W. SHANNON MERRICK,3 DEREK F. PAPP,4 AND GARY M. KIEBZAK1 1UHZ Sports Medicine Institute, Doctors Hospital, Baptist Health South Florida, Coral .Short-Term Isokinetic Training Versus Isotonic Training: Effects on Asymmetry in Strength of Thigh Muscles by (conH/Q) torque ratio was lower than During seasonal testing, an isokinetic measurement of knee extensors and flexors was performed at 60º/s.

The athletes were divided into two groups. Nineteen athletes performed the.Jul 05,  · Reliability of Concentric, Eccentric and Isometric Knee Extension and Flexion when using the REV Isokinetic Dynamometer quadriceps, hamstring, peak torque, imbalance ratios Zachariassen T, Christensen R, Bulow P, Henriksen M, Bliddal H.

Learning effect of isokinetic measurements in healthy subjects, and reliability and Cited by: