scholarly journals Development of a new method of measurement of cranio-cervical flexor muscle performance

2005 ◽  
Author(s):  
Shaun O'Leary
2005 ◽  
Vol 85 (6) ◽  
pp. 556-564 ◽  
Author(s):  
Shaun P O'Leary ◽  
Bill T Vicenzino ◽  
Gwendolen A Jull

Abstract Background and Purpose. A new method of dynamometry has been developed to measure the performance of the craniocervical (CC) flexor muscles by recording the torque that these muscles exert on the cranium around the CC junction. This report describes the method, the specifications of the instrument, and the preliminary reliability data. Subjects and Methods. For the reliability study, 20 subjects (12 subjects with a history of neck pain, 8 subjects without a history of neck pain) performed, on 2 occasions, maximal voluntary isometric contraction (MVIC) tests of CC flexion in 3 positions within the range of CC flexion and submaximal sustained tests (20% and 50% of MVIC) in the middle range of CC flexion (craniocervical neutral position). Reliability coefficients were calculated to establish the test-retest reliability of the measurements. Results. The method demonstrated good reliability over 2 sessions in the measurement of MVIC (intraclass correlation coefficient [ICC]=.79–.93, SEM=0.6–1.4 N·m) and in the measurement of steadiness (standard deviation of torque amplitude) of a sustained contraction at 20% of MVIC (ICC=.74–.80, SEM=0.01 N·m), but not at 50% of MVIC (ICC=.07–.76, SEM=0.04–0.13 N·m). Discussion and Conclusion. The new dynamometry method appears to have potential clinical application in the measurement of craniocervical flexor muscle performance.


2007 ◽  
Vol 37 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Shaun O'Leary ◽  
Gwendolen Jull ◽  
Mehwa Kim ◽  
Bill Vicenzino

2013 ◽  
Vol 16 (03) ◽  
pp. 1350011 ◽  
Author(s):  
Md. Nezamuddin ◽  
Shahnawaz Anwer ◽  
Sohrab Ahmad Khan ◽  
Ameed Equebal

Purpose: This randomized trial study compared the efficacy of pressure-biofeedback guided deep cervical flexor training as an adjunct with conventional exercise on pain and muscle performance in visually displayed terminal operators. Methods: A total of 50 (22 men and 28 women) patients with neck pain participated in the study. Patients were randomly placed into two groups: a biofeedback group (n = 25) and a control group (n = 25). The biofeedback group received pressure-biofeedback guided deep cervical flexor training program for 5 days a week for 6 weeks, whereas the control group received an exercise program only. Results: On intergroup comparisons, the deep cervical flexor performance in biofeedback group, at the end of 6th week was significantly higher than those of control group (p < 0.01). Pain intensity was also significantly reduced in biofeedback group when compared to control group at the end of trial (p < 0.004). Conclusion: The addition of pressure-biofeedback to a 6-week conventional program appeared to increase deep cervical flexor muscle performance, compared to the exercise program alone for people with reduced muscle performance.


1998 ◽  
Vol 7 (3) ◽  
pp. 243-250 ◽  
Author(s):  
K.J Dodd ◽  
M.E Morris ◽  
T.A Matyas ◽  
T.V Wrigley ◽  
P.A Goldie

1996 ◽  
Vol 17 (8) ◽  
pp. 477-482 ◽  
Author(s):  
Ingrid Ekenman ◽  
Li Tsai-Felländer ◽  
Pär Westblad ◽  
Ibrahim Turan ◽  
Christer Rolf

We aimed to study intrinsic factors in 29 consecutive patients with well-documented unilateral stress fractures of the tibia. Anthropometry, range of motion, isokinetic plantar flexor muscle performance, and gait pattern were analyzed. The uninjured leg served as the control. A reference group of 30 uninjured subjects was compared regarding gait pattern. Anterior stress fractures of the tibia (N = 10) were localized in the push-off/ landing leg in 9/10 athletes, but were similarly distributed between legs in posteromedial injuries (N = 19). Ten (30%) of the stress fracture subjects had bilateral high foot arches, similar to those found in the reference group. There were no other systematic differences in anthropometry, range of motion, gait pattern, or isokinetic plantar flexor muscle peak torque and endurance between injured and uninjured legs. No other differences were found between anterior and posteromedial stress fractures. We conclude that anterior stress fractures of the tibia occur mainly in the push-off/landing leg in athletes. Within the limitations of our protocol, no registered intrinsic factor was found to be directly associated with the occurrence of a stress fracture of the tibia.


1976 ◽  
Vol 31 (11) ◽  
pp. 1091-1097 ◽  
Author(s):  
H. Sovová ◽  
J. Procházka

2015 ◽  
Vol 6 (1) ◽  
pp. 43-60
Author(s):  
Emma Hurley ◽  
Raegan Murphy

Abstract This paper proposes a new method of idiographic measurement for dynamic assessment (DA) intervention. There are two main methods of measurement for DA intervention; split -half tests and integrated scoring systems. Split-half tests of ability have proved useful from a research perspective. Integrated scoring systems coupled with case studies are useful from a practitioner perspective. The purpose of this research is to bridge the gap between research and practice by developing a methodology that is compatible with both. To this end the paper proposes a measureable idiographic method of measurement, which utilises multi-dimensional scaling (MDS) and general procrustean analysis (GPA) to analyse the result of card-sort data gathered from a learner across the entire intervention. This approach provides a method of assessment, which is both compatible with individual intervention and suited to building a body of evidence-based research for DA. An example of the method in practice is given for illustrative purposes. The initial results suggest that this approach provides a methodology that satisfies the requirements of both practitioners when formulating targeted intervention and researchers who require methods of measurement of change in ability of the individual over time.


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