Manual asymmetry in a complex coincidence-anticipation task: Handedness and gender effects

Rodrigues, Paula; Vasconcelos, Olga; Barreiros, João; Barbosa, Ricardo

doi:10.1080/13576500802469607

Cited by 19 publications

(21 citation statements)

References 82 publications

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“…These differences may explain the higher rate of neck/shoulder WMSD in women. However, the recent findings of sex differences with respect to neuromuscular control suggest that factors other than anthropometry and strength may also contribute to the injury rate differences between sexes [ 18 - 20 ] .…”

Section: Introductionmentioning

confidence: 99%

“…proprioception, vestibular, visual) in the central nervous system (CNS), which can subsequently result in efferent responses to the muscular system [ 22 ]. The possibility that such a neural processing differ between men and women has been the focus of recent studies, with only a few of them focusing on the upper limb [ 18 - 20 ]. Specifically, possible sex differences in limb proprioception have received little attention.…”

Section: Introductionmentioning

confidence: 99%

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Sex differences in the shoulder joint position sense acuity: a cross-sectional study

Vafadar

Côté

Archambault

2015

BMC Musculoskelet Disord

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BackgroundWork-related musculoskeletal disorders (WMSD) is the most expensive form of work disability. Female sex has been considered as an individual risk factor for the development of WMSD, specifically in the neck and shoulder region. One of the factors that might contribute to the higher injury rate in women is possible differences in neuromuscular control. Accordingly the purpose of this study was to estimate the effect of sex on shoulder joint position sense acuity (as a part of shoulder neuromuscular control) in healthy individuals.MethodsTwenty-eight healthy participants, 14 females and 14 males were recruited for this study. To test position sense acuity, subjects were asked to flex their dominant shoulder to one of the three pre-defined angle ranges (low, mid and high-ranges) with eyes closed, hold their arm in that position for three seconds, go back to the starting position and then immediately replicate the same joint flexion angle, while the difference between the reproduced and original angle was taken as the measure of position sense error. The errors were measured using Vicon motion capture system. Subjects reproduced nine positions in total (3 ranges × 3 trials each).ResultsCalculation of absolute repositioning error (magnitude of error) showed no significant difference between men and women (p-value ≥ 0.05). However, the analysis of the direction of error (constant error) showed a significant difference between the sexes, as women tended to mostly overestimate the target, whereas men tended to both overestimate and underestimate the target (p-value ≤ 0.01, observed power = 0.79). The results also showed that men had a significantly more variable error, indicating more variability in their position sense, compared to women (p-value ≤ 0.05, observed power = 0.78).DiscussionDifferences observed in the constant JPS error suggest that men and women might use different neuromuscular control strategies in the upper limb. In addition, higher JPS variability observed in men might be one of the factors that could contribute to their lower rate of musculoskeletal disorders, compared to women.ConclusionsThe result of this study showed that shoulder position sense, as part of the neuromuscular control system, differs between men and women. This finding can help us better understand the reasons behind the higher rate of musculoskeletal disorders in women, especially in the working environments.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sex differences in the shoulder joint position sense acuity: a cross-sectional study

Vafadar

Côté

Archambault

2015

BMC Musculoskelet Disord

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“…The authors were only able to test aiming behaviour in a relatively small number of surgeons using the hand that they stated was dominant and the authors did not assess aiming performance with the non-dominant hand. Previous studies have consistently demonstrated a negative impact when individuals aim with their non-dominant hand (Özcan and others 2004, Rodrigues and others 2009, Hughes and others 2011). In addition, the participants were unaware of the present study aims and the authors used a simple model that did not include the additional challenge of drilling at a tangent to a bone surface.…”

Section: Discussionmentioning

confidence: 96%

In vitro assessment of aiming bias in the frontal plane during orthopaedic drilling procedures

Sparrow¹,

Heller

Farrell³

2015

Veterinary Record

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Drilling trials were performed using drilling boards incorporating pairs of 22 mm polyethylene tubes mounted horizontally. The tubes were premarked with 20, 0.5 mm deep notches along the centre of their upper surface representing the starting point for each drilling trial. Volunteers were instructed to drill 20 straight holes across the tube until they penetrated both walls. Kirschner wires were inserted through each of the drill holes until they made indentations into the base board. Deviation of each mark from mid-line was measured using digital callipers. The measured values were used to calculate deviation angles to the left (negative values) or right (positive values). Trials were performed with the drill and guide held in the surgeon's line-of-sight (LOS) and with 300 mm offset (OFF). A systematic error (aiming bias) was identified in all individuals. Overall, left-hander's drilling action was skewed to the left and right-hander's drilling action was skewed to the right. Using LOS technique, mean overall bias was 2.3° (range 0°-7.7°) to the left for left-handers and 1.5(o) (range 0.3°-3.1°) to the right for right-handers. Surprisingly, aiming bias was greater for LOS than for OFF, although the difference for this comparison was not statistically significant.

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“…Their body mass indexes were mainly of the mesomorphic type. Gender of the participants was selected because of a documented lower level of effectiveness of motor performance in females than in males in complex motor tasks [34][35][36]. The research was approved by the Local Research Committee of the Lithuanian State Academy of Phys ical Education and informed consent was obtained from each participant before their entry into the study.…”

Section: Participantsmentioning

confidence: 99%

Reaction time and movement duration influence on end point accuracy in a fast reaching task

et al. 2012

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In labor and sport physiology a great deal of interest concerns the conceptual model of governance of both rapid and precise target directed movements. Widely known in the theory of motor control, Fitts' par adigm determines the time of motion, calculated from the distance to the target and the diameter of the tar get. However this paradigm does not take into account the time of preparation for movement, which can have a significant impact on accuracy. In addition, the literature highlights little evidence of temporal and spatial asymmetry in the production of fast and accurate movements. The aim of our work was to investigate the influence of the duration of the preparatory phase (reaction time -T R ) and duration of protractile motion of the arm (T M ) on the speed and accuracy of movement. Also, the indi vidual asymmetry of the temporal characteristics and accuracy of performance of movements were studied. We measured three aspects of translational motion of the arm to the computerized target: reaction time (T R , s), time of motion of the arm (T M , s), and error in the achievement of the target (ΔL, mm). The group of partic ipants consisted of 12 healthy, right handed, untrained girls, each of whom completed 5 series of 10 discrete movements by each of the left and right arms. Mathematical analysis of the results revealed the existence of five models of performance. Each model was represented in the participant's performance with different probability. The combination of high speed and high precision when the arm moved towards the target was found only in model 5, which combines a long period of preparation for the movement (T R ) and a short time of motion (T M ). The probability of its occur rence in the untrained subjects was very low (2-3%). We suggest that it may be possible to develop special methods of training, geared towards the ability to increase the probability of appearance of this model. Asymmetry of motor action appeared clearly evident only in the parameter of accuracy (right arm committed the least errors), especially when the reaction time (T R ) and movement time (T M ) were close to average values of the sample. This result enables us to recommend this method for the determination of "handedness". The results allow us to conclude that in the process of development of new motor skills which include both precise and rapid movements we must take into account the initial values of reaction time. We also think that Fitts' existing formula should be modified by including the parameter of reaction time.

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Manual asymmetry in a complex coincidence-anticipation task: Handedness and gender effects

Cited by 19 publications

References 82 publications

Sex differences in the shoulder joint position sense acuity: a cross-sectional study

Sex differences in the shoulder joint position sense acuity: a cross-sectional study

In vitro assessment of aiming bias in the frontal plane during orthopaedic drilling procedures

Reaction time and movement duration influence on end point accuracy in a fast reaching task

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