Torque

Publication Title: 
FASEB journal: official publication of the Federation of American Societies for Experimental Biology

The mechanism of action of acupuncture remains largely unknown. The reaction to acupuncture needling known as 'de qi', widely viewed as essential to the therapeutic effect of acupuncture, may be a key to understanding its mechanism of action. De qi includes a characteristic needling sensation, perceived by the patient, and 'needle grasp' perceived by the acupuncturist. During needle grasp, the acupuncturist feels pulling and increased resistance to further movement of the inserted needle.

Author(s): 
Langevin, H. M.
Churchill, D. L.
Cipolla, M. J.
Publication Title: 
The Spine Journal: Official Journal of the North American Spine Society

BACKGROUND CONTEXT: Quadruped animal models have been validated and used as biomechanical models for the lumbar spine. The biomechanics of the cat lumbar spine has not been well characterized, even though it is a common model used in neuromechanical studies. PURPOSE: Compare the physiological ranges of motion and determine torque-limits for cat and human lumbar spine specimens during physiological motions. STUDY DESIGN/SETTING: Biomechanics study. PATIENT SAMPLE: Cat and human lumbar spine specimens.

Author(s): 
Ianuzzi, Allyson
Pickar, Joel G.
Khalsa, Partap S.
Publication Title: 
Spine

STUDY DESIGN: Serial dissection of porcine motion segments during robotic control of vertebral kinematics. OBJECTIVE: To identify which spinal tissues are loaded in response to manual therapy (manipulation and mobilization) and to what magnitude. SUMMARY OF BACKGROUND DATA: Various theoretical constructs attempt to explain how manual therapies load specific spinal tissues.

Author(s): 
Kawchuk, Gregory N.
Carrasco, Alejandro
Beecher, Grayson
Goertzen, Darrell
Prasad, Narasimha
Publication Title: 
Medicine and Science in Sports and Exercise

PURPOSE: This study compared the effect of immediate versus delayed massage-like compressive loading (MLL) on peak isometric torque recovery and inflammatory cell infiltration after eccentric exercise (EEX). METHODS: Eighteen skeletally mature New Zealand White rabbits were instrumented with peroneal nerve cuffs for the stimulation of hindlimb tibialis anterior muscles. After a bout of EEX, rabbits were randomly assigned to an MLL protocol (0.5 Hz, 10 N, 15 min) that started immediately post-EEX, 48 h post-EXX, or no-MLL control and performed for four consecutive days.

Author(s): 
Haas, Caroline
Butterfield, Timothy A.
Abshire, Sarah
Zhao, Yi
Zhang, Xiaoli
Jarjoura, David
Best, Thomas M.
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: To assess the use of the term "torque" in the chiropractic literature and to analyze its usage in chiropractic technique procedures. DATA SOURCES, STUDY SELECTION AND DATA EXTRACTION: Articles were retrieved through literature searches of several indexing services [(MEDLINE, Index to Chiropractic Literature, Chiropractic Research Archives Collection (CRAC) and Chiropractic Literature Analysis and Retrieval System (ChiroLARS)] and hand searches in the technique section of a chiropractic college library.

Author(s): 
Harrison, D. D.
Colloca, C. J.
Troyanovich, S. J.
Harrison, D. E.
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: To determine if Active Release Technique (ART) protocols could be used as an effective way to influence strength and muscle inhibition in the quadriceps muscles of athletes with anterior knee pain. DESIGN: Pilot clinical outcome study. METHODS: The sample consisted of 9 athletes (4 male athletes, 5 female athletes) who were identified as suffering from unilateral anterior knee pain. A Biodex dynamometer and the interpolated twitch technique were used to determine isometric strength and inhibition in the quadriceps muscles, respectively.

Author(s): 
Drover, Janice M.
Forand, Dominique R.
Herzog, Walter
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: To determine if Active Release Technique (ART) protocols could be used as an effective way to influence strength and muscle inhibition in the quadriceps muscles of athletes with anterior knee pain. DESIGN: Pilot clinical outcome study. METHODS: The sample consisted of 9 athletes (4 male athletes, 5 female athletes) who were identified as suffering from unilateral anterior knee pain. A Biodex dynamometer and the interpolated twitch technique were used to determine isometric strength and inhibition in the quadriceps muscles, respectively.

Author(s): 
Drover, Janice M.
Forand, Dominique R.
Herzog, Walter
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

PURPOSE: Lumbar spinal manipulation (SM) is a popular, effective treatment for low back pain but the physiological mechanisms remain elusive. During SM, mechanoreceptors innervating the facet joint capsule (FJC) may receive a novel stimulus, contributing to the neurophysiological benefits of SM. The biomechanics of SM and physiological axial rotations were compared to determine whether speed or loading site affected FJC strain magnitudes or patterns.

Author(s): 
Ianuzzi, Allyson
Khalsa, Partap S.
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVES: The purpose of this study was to characterize the force-time profile of the McTimoney toggle-torque-recoil (MTTR) technique. METHODS: Two licensed chiropractors trained in the McTimoney Method applied MTTR thrusts to a tabletop where a dynamic load cell had been mounted. Each clinician applied 10 thrusts (5 with each hand) to the load cell in a repeated measures design. Peak forces, time durations, and time to peak force were computed from each of the force-time histories.

Author(s): 
Colloca, Christopher J.
Cunliffe, Christina
Pinnock, Marisa H.
Kim, Young-Kwan
Hinrichs, Richard N.
Publication Title: 
Medicine and Science in Sports and Exercise

PURPOSE: The objectives of this cross-sectional study were to examine whether older Tai Chi practitioners had better knee muscle strength, less body sway in perturbed single-leg stance, and greater balance confidence than healthy older adults. METHODS: Tai Chi and control subjects (N = 24 each, aged 69.3 +/- 5.0 and 71.6 +/- 6.1 yr, respectively) were matched with respect to age, gender, height, weight, and physical activity level. Concentric and eccentric isokinetic tests of the subjects" dominant knee extensors and flexors were conducted at an angular velocity of 30 degrees.s(-1).

Author(s): 
Tsang, William W. N.
Hui-Chan, Christina W. Y.

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