scholarly journals Lumbar Intervertebral Motion in Healthy Male Participants: Protocol for a Motion Analysis During Flexion and Extension Cinematographic Recordings

10.2196/14741 ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. e14741
Author(s):  
Inge J M H Caelers ◽  
Toon F M Boselie ◽  
Kim Rijkers ◽  
Wouter L W Van Hemert ◽  
Rob A De Bie ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Health Care Professionals ◽  
Healthy Male ◽  
Motion Patterns ◽  
Maximum Flexion ◽  
Adequate Definition ◽  
Physiological Motion ◽  
Definition Of ◽  
Medical Research Ethics ◽  
Flexion And Extension

Background Physiological motion of the lumbar spine is a subject of interest for musculoskeletal health care professionals, as abnormal motion is believed to be related to lumbar conditions and complaints. Many researchers have described ranges of motion for the lumbar spine, but only a few have mentioned specific motion patterns of each individual segment during flexion and extension. These motion patterns mostly comprise the sequence of segmental initiation in sagittal rotation. However, an adequate definition of physiological motion of the lumbar spine is still lacking. The reason for this is the reporting of different ranges of motion and sequences of segmental initiation in previous studies. Furthermore, due to insufficient fields of view, none of these papers have reported on maximum flexion and extension motion patterns of L1 to S1. In the lower cervical spine, a consistent pattern of segmental contributions was recently described. In order to understand physiological motion of the lumbar spine, it is necessary to systematically study motion patterns, including the sequence of segmental contribution, of vertebrae L1 to S1 in healthy individuals during maximum flexion and extension. Objective This study aims to define the lumbar spines’ physiological motion pattern of vertebrae L1, L2, L3, L4, L5, and S1 by determining the sequence of segmental contribution and the sequence of segmental initiation of motion in sagittal rotation of each vertebra during maximum flexion and extension. The secondary endpoint will be exploring the possibility of analyzing the intervertebral horizontal and vertical translation of each vertebra during maximum flexion and extension. Methods Cinematographic recordings will be performed on 11 healthy male participants, aged 18-25 years, without a history of spine problems. Cinematographic flexion and extension recordings will be made at two time points with a minimum 2-week interval in between. Results The study has been approved by the local institutional medical ethical committee (Medical Research Ethics Committee of Zuyderland and Zuyd University of Applied Sciences) on September 24, 2018. Inclusion of participants will be completed in 2020. Conclusions If successful, these physiological motion patterns can be compared with motion patterns of patients with lumbar conditions before or after surgery. Ultimately, researchers may be able to determine differences in biomechanics that can potentially be linked to physical complaints like low back pain. Trial Registration ClinicalTrials.gov NCT03737227; https://clinicaltrials.gov/ct2/show/NCT03737227 International Registered Report Identifier (IRRID) DERR1-10.2196/14741

scholarly journals Validity of flexicurve for the assessment of spinal flexibility in asymptomatic individuals

2020 ◽  
Vol 33 ◽  
Author(s):  
Marja Bochehin do Valle ◽  
Vinícius Hoffmann Dutra ◽  
Cláudia Tarragô Candotti ◽  
Juliana Adami Sedrez ◽  
Edgar Santiago Wagner Neto ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Reference Value ◽  
Relevant Information ◽  
Neutral Position ◽  
Maximum Flexion ◽  
Spinal Flexibility ◽  
Rms Error ◽  
The Difference ◽  
Asymptomatic Individuals ◽  
Flexion And Extension

Abstract Introduction: Spine problems are common, and assessment of spine flexibility provides relevant information; however, alternative evaluation methods need to be validated. Objective: To evaluate the concurrent validity of the Flexicurve using 3D videogrammetry as a reference value to assess spinal flexion and extension in the lumbar and thoracic regions. Method: The consecutive sample consisted of 39 individuals aged between 18 and 50 years. Two consecutive evaluations were performed by the same rater on the same day and at the same location: (1) Flexicurve and (2) 3D videogrammetry. The assessments were performed with the spine in the neutral position, followed by maximum flexion and extension. The range of motion (ROM) in the maximum flexion and extension positions was calculated in MATLAB® and defined as the difference between the maximum flexion or extension angle and that of the neutral position. Statistical analyses used were the Pearson Product-Moment Correlation coefficient, RMS error and Bland-Altman plot (α < 0.05). Results: The ROM between instruments was similar, with high correlations for thoracic flexion (r = 0.751), extension (r = 0.814) and lumbar flexion (r = 0.853), and RMS errors under 8°. The correlation for lumbar extension was moderate (r = 0.613) and the RMS error was more than 10°. The limits of agreement varied between ± 10º and ± 21º. Conclusion: The Flexicurve is valid for assessing maximum flexion and extension of the thoracic spine, and maximum flexion of the lumbar spine. We suggest caution in evaluating the maximum extension of the lumbar spine.

Use of Ultrasonography to Evaluate Thickness of the Erector Spinae Muscle in Maximum Flexion and Extension of the Lumbar Spine

Spine ◽  
2004 ◽  
Vol 29 (13) ◽  
pp. 1472-1477 ◽  
Author(s):  
Kazuto Watanabe ◽  
Kei Miyamoto ◽  
Takahiro Masuda ◽  
Katsuji Shimizu
Keyword(s):  
Lumbar Spine ◽  
Erector Spinae ◽  
Maximum Flexion ◽  
Erector Spinae Muscle ◽  
Flexion And Extension

Detection of effort maximality in adults performing isokinetic wrist flexion and extension

2021 ◽  
pp. 1-7
Author(s):  
Mercè Torra ◽  
Eduard Pujol ◽  
Anna Maiques ◽  
Salvador Quintana ◽  
Roser Garreta ◽  
...  
Keyword(s):  
High Velocity ◽  
Healthy Male ◽  
Wrist Flexion ◽  
Low Velocity ◽  
Wrist Extensor ◽  
Submaximal Effort ◽  
The Difference ◽  
Muscle Groups ◽  
Maximal Effort ◽  
Flexion And Extension

BACKGROUND: The difference between isokinetic eccentric to concentric strength ratios at high and low velocities (DEC) is a powerful tool for identifying submaximal effort in other muscle groups but its efficiency in terms of the wrist extensors (WE) and flexors (WF) isokinetic effort has hitherto not been studied. OBJECTIVE: The objective of the present study is to examine the usefulness of the DEC for identifying suboptimal wrist extensor and flexor isokinetic efforts. METHODS: Twenty healthy male volunteers aged 20–40 years (28.5 ± 3.2) were recruited. Participants were instructed to exert maximal and feigned efforts, using a range of motion of 20∘ in concentric (C) and eccentric (E) WE and WF modes at two velocities: 10 and 40∘/s. E/C ratios (E/CR) where then calculated and finally DEC by subtracting low velocity E/CR from high velocity ones. RESULTS: Feigned maximal effort DEC values were significantly higher than their maximal effort counterparts, both for WF and WE. For both actions, a DEC cutoff level to detect submaximal effort could be defined. The sensitivity of the DEC was 71.43% and 62.5% for WE ad WF respectively. The specificity was 100% in both cases. CONCLUSION: The DEC may be a valuable parameter for detecting feigned maximal WF and WE isokinetic effort in healthy adults.

scholarly journals The lumbar spine has an intrinsic shape specific to each individual that remains a characteristic throughout flexion and extension

2014 ◽  
Vol 23 (S1) ◽  
pp. 26-32 ◽  
Author(s):  
Anastasia V. Pavlova ◽  
Judith R. Meakin ◽  
Kay Cooper ◽  
Rebecca J. Barr ◽  
Richard M. Aspden
Keyword(s):  
Lumbar Spine ◽  
Intrinsic Shape ◽  
Flexion And Extension

A Digitizing Technique for the Study of Movement of Intradiscal Dye in Response to Flexion and Extension of the Lumbar Spine

Spine ◽  
1988 ◽  
Vol 13 (3) ◽  
pp. 309-312 ◽  
Author(s):  
BROCK E. SCHNEBEL ◽  
JAMES W. SIMMONS ◽  
JON CHOWNING ◽  
RON DAVIDSON
Keyword(s):  
Lumbar Spine ◽  
Flexion And Extension

scholarly journals When is a Learning Object not an Object: A first step towards a theory of learning objects

2002 ◽  
Vol 3 (2) ◽  
Author(s):  
Mike Sosteric ◽  
Susan Hesemeier
Keyword(s):  
Economies Of Scale ◽  
Learning Objects ◽  
Short Term ◽  
Object A ◽  
Smart Learning ◽  
Smart Learning Environments ◽  
Adequate Definition ◽  
Definition Of ◽  
Conceptual Confusion

<p> For some, “learning objects" are the “next big thing” in distance education promising smart learning environments, fantastic economies of scale, and the power to tap into expanding educational markets. While learning objects may be revolutionary in the long term, in the short term, definitional problems and conceptual confusion undermine our ability to understand and critically evaluate the emerging field. This article is an attempt to provide an adequate definition of learning objects by (a) jettisoning useless theoretical links hitherto invoked to theorize learning objects, and (b) reducing the definition of learning objects to the bare essentials. The article closes with suggestions for further research and further refinement of the definition of learning objects. </P>

scholarly journals On the notion of visual illusions

Psihologija ◽  
2014 ◽  
Vol 47 (3) ◽  
pp. 359-367 ◽  
Author(s):  
Dejan Todorovic
Keyword(s):  
Visual Illusions ◽  
Adequate Definition ◽  
Definition Of

The usual definitions of illusions, as incorrect perceptions or cases of discrepancies between reality and our perception of reality, have been criticized as inadequate. The reason is that it is not clear how to apply this notion in a number of interesting cases. This paper is an attempt to provide an adequate definition of illusions, appropriate for many classical phenomena usually referred to as illusions.

scholarly journals Preceptors in Medical Residency Programs: Epidemiological Profile and Pedagogic Training

2020 ◽  
Vol 44 (4) ◽  
Author(s):  
Aderval de Melo Carvalho Filho ◽  
Almira Alves dos Santos ◽  
Rozangela Maria de Almeida Fernandes Wyszomirska ◽  
Isabella Costa Figueiredo Medeiros
Keyword(s):  
Health Care Professionals ◽  
The State ◽  
Public Institution ◽  
Medical Residency ◽  
Residency Programs ◽  
Service Training ◽  
The Mean ◽  
Definition Of ◽  
Epidemiological Profile ◽  
Mean Time

Abstract: Introduction: Medical Residency is a specialization course characterized as in-service training, considered in Brazil as the gold standard in the development of specialist physicians’ training. The medical residency preceptorship is an activity carried out by a specialist physician, responsible for monitoring resident physicians. However, there is neither a definition of the main requirements for such a preceptor, nor of his/her academic background to carry out the due teaching training, and it was possible to notice a relative lack of preparation regarding the pedagogical aspects. Methods: Descriptive study based on a quantitative approach, comprising 200 preceptors, of both genders, from medical residency programs in Maceió, state of Alagoas, Brazil. Results: The mean age was 43.31 ± 10.31 years, with a slight majority of female participants (52.5%). The mean time since graduation was 19.5 ± 10.58 years, and 83% of the participants had graduated in the state of Alagoas. Moreover, 78.5% said they had their Medical Residency certification, with an increased trend of public institution preceptors getting their degree at the stricto sensu level. The mean time of their completed postgraduate course was 12.63 ± 10.87 years and 7.07 ± 6.99 years being a preceptor. Only 19% mentioned they had some qualification for exercising the preceptorship, and 29.5% work as the teachers at the undergraduate level. The state of Alagoas has followed the expansion of the Residency programs, justifying the mean age found, similar to other studies. The majority of female participants can be associated with the feminization of health care professionals. The high percentage of preceptors with medical residency qualification is in accordance with Resolution n. 4/1978. We found experienced preceptors, but some authors differed. The low percentage of preceptors with qualification for exercising preceptorship indicates low interest and lack of available training. Conclusion: This study population is characterized as being young, and most are females. They have had long professional experience, and most have graduated in the state of Alagoas. There is a predominance of medical residency as their main qualification, and few of them have had training in the field. Finally, preceptors from public institutions have mostly got their degrees at the stricto sensu level.

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