| 141. |
- Wiesinger, Birgitta, 1963-, et al.
(författare)
-
Multimodal Sensory Stimulation of the Masseter Muscle Reduced Precision but Not Accuracy of Jaw-Opening Movements
- 2019
-
Ingår i: Frontiers in Neuroscience. - : Frontiers Media S.A.. - 1662-4548 .- 1662-453X. ; 13
-
Tidskriftsartikel (refereegranskat)abstract
- A functional integration between the trigeminal and craniocervical sensorimotor systems has been demonstrated, with simultaneous jaw and head–neck movements during jaw opening–closing. We previously showed that pain induction in the masseter muscle increased the relative contribution of the neck component of integrated jaw–neck movements. Induced pain or manipulation of proprioception by vibration did not affect accuracy during a jaw-opening task in men. It is not known how multimodal sensory stimulation, with a combination of pain induction and vibration, affects jaw-opening accuracy and precision. The aim was to investigate how jaw–neck movements, and specifically accuracy and precision of jaw-opening, are affected during concomitant nociceptive and proprioceptive stimulation of the masseter muscle. Twenty-one healthy men performed jaw-opening to a target position, defined as 75% of individual maximum jaw opening, during control (Ctr), vibration of masseter muscles (Vib), pain induction in the masseter (Pain), and concomitant vibration and pain induction in the masseter muscle (VibPain). Simultaneous jaw and head movements were recorded with an optoelectronic system and amplitudes calculated for each jaw opening–closing cycle. Accuracy of jaw movements was defined as the achievement of the target position. Precision of jaw movements was defined as the cycle-to-cycle variability from the mean of cycles 2–10 (coefficient of variation, CV). Differences between the trials were analyzed with Friedman’s test, Dunn’s test, and Benjamini–Hochberg correction. There were no significant differences between the trials for jaw movement amplitudes. For head movements, amplitudes for cycles 2–10 were larger during Pain compared to Ctr and Vib (both p = 0.034), and larger during VibPain compared to Ctr (p = 0.034) and Vib (p = 0.035). There were no differences in accuracy of jaw movements between the trials. For precision of jaw movements, the cycle-to-cycle variability was larger during VibPain compared to Ctr (p = 0.027) and Vib (p = 0.018). For integrated jaw–neck motor strategy, there was a difference between pain and non-pain trials, but no differences between unimodal and multimodal stimulation trials. For achievement of jaw-opening to a target position, the results show no effect on accuracy, but a reduced precision of jaw movements during combined proprioceptive and nociceptive multimodal stimulation.
|
|
| 142. |
- Wiitavaara, Birgitta, 1959-, et al.
(författare)
-
An initial factor analysis of prominent aspects of health experiences for women with neck-shoulder pain
- 2012
-
Ingår i: Disability and Rehabilitation. - : Informa UK Limited. - 0963-8288 .- 1464-5165. ; 34:11, s. 934-942
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: The prospect of adequate comparisons is essential to decide on the effectiveness of different treatments. As there is a lack of unity in choice of questionnaires and included measures concerning musculoskeletal disorders, further investigations based on international recommendations are of interest. The intention of present study was to initiate the development of a clinically useful short-form questionnaire. The aim was to select items that capture prominent health aspects for women with neck-shoulder pain and thereby reduce the number of items to a clinically more convenient amount, and to determine the underlying structure of included items.Method: Data were collected in a randomised controlled trial including women with non-specific neck-shoulder pain > 3 months (n = 117). Data collection included three core domains: pain intensity, physical and emotional functioning, and analysis was performed using Principal component analysis, and Varimax rotation.Results: The resulting 9-factor solution included interference, solicitous/distracting responses, mood and feelings about self and relations, pain intensity, punishing responses, personal growth, life control, sleep, and appetite (29 items).Conclusions: The results will contribute to the development of a reduced battery of questions representing core dimensions. Such questionnaire would lighten the assessment load in the clinic as well as in research.
|
|
| 143. |
- Zander, Carol, et al.
(författare)
-
Self-directed learning : Stories from industry
- 2012
-
Ingår i: Koli Calling '12. - New York, NY, USA : ACM Digital Library. - 9781450317955 ; , s. 111-117
-
Konferensbidrag (refereegranskat)abstract
- We report preliminary results from an ongoing investigation of how computing professionals perceive and value selfdirected learning, based on a qualitative analysis of interviews with ten computing professionals. The professionals expect that future colleagues will have a well-developed ability to learn on their own. They indicate that professionals use a range of resources, strategies, and collaborators to help them learn. They find their work-related self-directed learning enjoyable, expressing a sense of confidence and pride; yet they often also find it to be a stressful never-ending process. Copyright 2012 ACM.
|
|
| 144. |
- Zander, Carol, et al.
(författare)
-
Student transformations : are they computer scientists yet?
- 2009
-
Ingår i: ICER '09. - New York : ACM. - 9781605586151 ; , s. 129-140
-
Konferensbidrag (refereegranskat)abstract
- We examine the changes in the ways computing students view their field as they learn, as reported by the students themselves in short written biographies. In many ways, these changes result in students thinking and acting more like computer scientists and identifying more with the computing community. Most of the changes are associated with programming and software engineering, rather than theoretical computer science, however.
|
|
| 145. |
- Österlund, Catharina, 1965-, et al.
(författare)
-
Jaw-neck movement integration in 6-year old children differs from that of adults
- 2020
-
Ingår i: Journal of Oral Rehabilitation. - : Blackwell Scientific Publications. - 1365-2842 .- 0305-182X. ; 47:1, s. 27-35
-
Tidskriftsartikel (refereegranskat)abstract
- Background: A functional integration between the jaw and neck regions during purposive jaw movements is well described in adults, but there is a lack of knowledge of such integration during jaw function in children.; Objectives: To determine the movement integration between the jaw and neck during jaw motor tasks in 6-year-olds, whether there is a difference between children and adults.; Methods: Jaw and neck movements were recorded with an optoelectronic 3D system in 25 healthy 6-year-olds (12 girls, 13 boys) and 24 healthy adults (12 women, 12 men) during paced jaw opening-closing and self-paced gum chewing. Jaw and neck movement amplitudes, intra-individual variation in movement amplitude, ratio between neck-jaw movement amplitudes, and movement cycle time were analysed. Differences between children and adults were evaluated with Mann-Whitney U test for independent samples.; Results: Compared to adults, 6-year old children showed larger neck movement amplitudes (P=0.008) during chewing, higher intra-individual variability in amplitudes of jaw (P=0.008) and neck (P=0.001) movements, higher ratio between neck-jaw movement amplitudes for jaw opening-closing (P=0.026) and chewing (P=0.003), and longer jaw movement cycle time (P≤0.0001) during the jaw opening-closing task.; Conclusion: Despite integrated jaw-neck movements in 6-year old children, the movement pattern differs from that of adults and may be interpreted as an immature programming of jaw-neck motor behavior. The well-integrated movements observed in adults most likely develop over years, perhaps into adolescence, and needs further research including well controlled longitudinal studies to map this development in order to provide appropriate age-related clinical treatment for functional disorders. This article is protected by copyright. All rights reserved.; This article is protected by copyright. All rights reserved.
|
|
| 146. |
- Aasa, Björn, et al.
(författare)
-
Acuity of goal-directed arm movements and movement control : evaluation of differences between patients with persistent neck/shoulder pain and healthy controls
- 2022
-
Ingår i: European Journal of Physiotherapy. - : Routledge. - 2167-9169 .- 2167-9177. ; 24:1, s. 47-55
-
Tidskriftsartikel (refereegranskat)abstract
- Background: The main aim was to examine whether patients with persistent upper quadrant pain have higher end-point variability in goal directed pointing movements than pain-free controls when the pointing task is performed in total darkness and under full vision. An additional aim was to study associations between the magnitude of end-point variability and a clinical movement control test battery and self-rated functioning among patients.Methods: Seventeen patients and 17 age- and gender-matched pain-free controls performed a pointing task that evaluated end-point variability of repetitive shoulder movements in horizontal adduction and abduction with full vision, and abduction with no visual information, completed a movement control test battery of neck and shoulder control tests and answered questionnaires.Results: Patients had higher end point variability for horizontal abduction when performed with no visual information. For horizontal adduction the variability was higher, but only when it was controlled for movement time. No significant correlations were found between end-point variability and self-rated functioning, nor between end-point variability and neuromuscular control of the glenohumeral joint.Conclusions: This study provides preliminary evidence that patients with persistent neck/shoulder pain can partly compensate proprioceptive deficits in goal-directed arm movement when visual feedback is present.
|
|
| 147. |
- Aasa, Ulrika, et al.
(författare)
-
Relationships between work-related factors and disorders in the neck-shoulder and low-back region among female and male ambulance personnel.
- 2005
-
Ingår i: Journal of Occupational Health. - : Wiley. - 1341-9145 .- 1348-9585. ; 47:6, s. 481-9
-
Tidskriftsartikel (refereegranskat)abstract
- This cross-sectional study on a random sample of 1,500 ambulance personnel investigated the relationships between self-reported work-related physical and psychosocial factors, worry about work conditions, and musculoskeletal disorders among female and male ambulance personnel. Three different outcomes, complaints, activity limitation, and sick leave, for the neck-shoulder and low-back region, respectively, were chosen. Among the female personnel, physical demands was significantly associated with activity limitation in the neck-shoulder (OR 4.13) and low-back region (OR 2.17), and psychological demands with neck-shoulder (OR 2.37) and low-back (OR 2.28) complaints. Among the male personnel, physical demands was significantly associated with low-back complaints (OR 1.41) and activity limitation (OR 1.62). Psychological demands and lack of social support were significantly associated with neck-shoulder complaints (OR 1.86 and OR 1.58, respectively) and activity limitation (OR 3.46 and OR 1.71) as well as activity limitation due to low-back complaints (OR 2.22 and OR 1.63). Worry about work conditions was independently associated with activity limitation due to low-back complaints among the female (OR 5.28), and to both neck-shoulder and low-back complaints (OR 1.79 and OR 2.04, respectively) and activity limitation (OR 2.32 and OR 1.95) among the male personnel. In conclusion, the association patterns between physical and psychological demands and MSDs suggest opportunities for intervention.
|
|
| 148. |
- Aasa, Ulrika, et al.
(författare)
-
Stress monitoring of ambulance personnel during work and leisure time
- 2006
-
Ingår i: International Archives of Occupational and Environmental Health. - : Springer Science and Business Media LLC. - 0340-0131 .- 1432-1246. ; 80:1, s. 51-59
-
Tidskriftsartikel (refereegranskat)abstract
- Objectives: The aim of the present study was to assess physiological and subjective stress markers during a 24-h ambulance work shift and during the next two work-free days, and relate these parameters to self-reported health complaints. Methods: Twenty-six ambulance personnel were followed during a 24-h work shift and during the next two work-free days with electrocardiogram, cortisol assessments and diary notes. The ambulance personnel also performed tests of autonomic reactivity before and at the end of the work shift. The subjects were categorized into two groups according to their number of health complaints. Results: In general, stress markers did not show differences between the work shift and leisure time. However, a modest deviation in heart rate variability pattern and higher morning cortisol values during work in comparison with work-free days were observed in personnel with many health complaints. Conclusions: Subjective and physiological characteristics of ambulance personnel did not indicate distinctive stress during the 24-h work shift. Relationships between frequent health complaints and specific work-related factors require further prospective studies.
|
|
| 149. |
- Aasa, Ulrika, et al.
(författare)
-
The effects of a 1-year physical exercise programme on development of fatigue during a simulated ambulance work task.
- 2008
-
Ingår i: Ergonomics. - : Informa UK Limited. - 0014-0139 .- 1366-5847. ; 51:8, s. 1179-94
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of the study was to evaluate the effects of individually prescribed physical exercise programmes on development of fatigue during the carrying of a loaded stretcher up and down the stairs. Nineteen ambulance personnel performed the training for 1 year. Testing occurred before and after 1 year of the training. Both the training group (n = 19) and the control group (n = 15) were assessed for physical capacity and lactate concentration in blood and ratings of perceived exertion during carrying a stretcher on the stairs. When comparisons were made between those who had been training three times/week for 1 year and the control group, lactate concentration was significantly decreased. In conclusion, markers of fatigue during stretcher carrying can be reduced by the use of individually prescribed physical exercise programmes.
|
|
| 150. |
- Aasa, Ulrika, et al.
(författare)
-
The impact of object size and precision demands on fatigue during computer mouse use
- 2011
-
Ingår i: Advances in Physiotherapy. - : Informa UK Limited. - 1403-8196 .- 1651-1948. ; 13:3, s. 118-127
-
Tidskriftsartikel (refereegranskat)abstract
- Prolonged computer use, especially if fatigue ensues, is associated with visual and musculoskeletal symptoms. The aim was to determine the time-course of perceived fatigue in the wrist, forearm, shoulder and eyes during a 60-min mouse task (painting rectangles), and whether object size and/or mouse use demands were of infl uence. Also, we investigated performance (number of rectangles painted), and whether perceived fatigue was paralleled by local muscle fatigue or tissue oxygenation.Ten women performed the task for three conditions (crossover design). At condition 1, rectangles were 45 25 mm, square paint cursor size 1.3 1.3 mm, and mouse – pointer movement ratio 1:26. At condition 2, the same cursor size and mouse – pointer movement ratio was used, but rectangles were smaller. At condition 3, the smaller rectangles were used, but the cursor size was also smaller and mouse – pointer movement ratio was 1:8. The results showed increased self-reported fatigue over time, with the observed increase greater for the eyes, but no change in physiological responses. Condition 2 resulted in higher performance and increased eye fatigue. Perceived fatigue in the muscles or physiological responses did not differ between conditions. In conclusion, computer work tasks imposing high visual and motor demands, and with high performance, seemed to have an infl uence on eye fatigue.
|
|
