11 results on '"Janssens L"'
Search Results
2. Zur Bestimmung des Glyzerins durch Destillation
- Author
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Janssens, L. C.
- Published
- 1916
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3. Mobile technologies for rehabilitation in non-specific spinal disorders: a systematic review of the efficacy and potential for implementation in low- and middle-income countries.
- Author
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Mitchaï PM, Mapinduzi J, Verbrugghe J, Michiels S, Janssens L, Kossi O, Bonnechère B, and Timmermans A
- Subjects
- Humans, Developing Countries, Quality of Life, Low Back Pain rehabilitation, Spinal Diseases, Telemedicine
- Abstract
Purpose: The aim of this systematic review was primarily to identify the types of mHealth technologies for the rehabilitation of non-specific spinal disorders, second to evaluate their efficacy, and finally to determine their applicability in LMICs., Methods: Three databases (Scopus, PubMed, and Web of Science) were searched for randomized controlled trials and clinical trials from January 2012 until December 2022. Studies were found eligible when using mHealth technologies for the rehabilitation of non-specific spinal disorders. To evaluate efficacy, the primary outcome was pain intensity, and the secondary outcomes were disability and quality of life. To evaluate the applicability in LMICs, information about financial and geographical accessibility, offline usability, and languages was extracted., Results: Fifteen studies were included comprising 1828 participants who suffer from non-specific low back pain (86.05%) and non-specific neck pain (13.95%). Fourteen distinct smartphone-based interventions and two sensor system interventions were found, with a duration ranging from four weeks to six months. All mHealth interventions demonstrated efficacy for the improvement of pain, disability and quality of life in non-specific spinal disorders, particularly low back pain. Five of the evaluated smartphone applications were free of charge accessible and had language features that could be adapted for use in LMICs., Conclusion: mHealth interventions can be used and integrated into the conventional treatment of non-specific spinal disorders in rehabilitation. They have demonstrated efficacy and could be implemented in LMICs with minor adaptations to overcome language barriers and the absolute necessity of the internet., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2023
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4. Prevalence and biopsychosocial factors associated with chronic low back pain in urban and rural communities in Western Africa: a population-based door-to-door survey in Benin.
- Author
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Kossi O, Yamadjako D, Timmermans A, Michiels S, Adoukonou T, and Janssens L
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- Female, Humans, Male, Rural Population, Prevalence, Cross-Sectional Studies, Benin epidemiology, Low Back Pain etiology, Chronic Pain epidemiology, Chronic Pain etiology
- Abstract
Purpose: This study aimed to assess the prevalence of chronic low back pain (CLBP) and related biopsychosocial factors in urban and rural communities in Benin., Methods: This is a population-based observational cross-sectional survey. An interviewer-administered electronic questionnaire was used to collect information on demographic, socio-economic, behavioral, and psychological factors relating to CLBP risk factors and medical history of participants. The numeric pain rating scale and the Beck Depression Inventory were used to assess pain intensity and the level of depression, respectively. Bivariate analyses were performed to investigate the association between sociodemographic, behavioral, and psychological factors and CLBP. Sequential multiple regression analyses were subsequently performed to predict the occurrence of CLBP., Results: A total of 4320 participants, with a mean age ± SD of 32.9 ± 13.1 years, of which 40.7% were females and 50.1% from an urban area, were enrolled in the study. We found a global prevalence rate of CLBP of 35.5% [95% CI 34.1-36.9%]. The prevalence in urban areas was 30.68% [95% CI 28.9-32.8%]) while 40.2% was found in rural areas [95% CI 38.1-42.2%]). Age (p < 0.001), level of education (p = 0.046), marital status (p < 0.001), working status (p < 0.003), tobacco use (p < 0.016) and regular physical activity (p < 0.011) were associated with CLBP. In urban areas, only the level of education was able to predict the prevalence of CLBP (R
2 = 61%). In rural areas, CLBP was predicted by age, marital and working status (R2 = 89%)., Conclusions: This study showed a high prevalence of CLBP among urban and rural communities in Benin. Age, level of education, marital status, and working status were significantly associated with CLBP in Benin., (© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2022
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5. Rehabilitation to improve outcomes of lumbar fusion surgery: a systematic review with meta-analysis.
- Author
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Bogaert L, Thys T, Depreitere B, Dankaerts W, Amerijckx C, Van Wambeke P, Jacobs K, Boonen H, Brumagne S, Moke L, Schelfaut S, Spriet A, Peers K, Swinnen TW, and Janssens L
- Subjects
- Adult, Exercise, Exercise Therapy, Humans, Lumbosacral Region, Pain, Spondylolisthesis
- Abstract
Purpose: To evaluate the effectiveness of rehabilitation strategies on disability, pain, pain-related fear, and return-to-work in patients undergoing lumbar fusion surgery for degenerative conditions or adult isthmic spondylolisthesis., Methods: Six electronic databases were systematically searched for randomized controlled trials (RCTs) evaluating the effect of rehabilitation (unimodal or multimodal). The estimated effect size was calculated for interventions with homogeneous content using a random-effects model. Certainty of evidence was assessed by GRADE., Results: In total, 18 RCTs, including 1402 unique patients, compared specific rehabilitation to other rehabilitation strategies or usual care. Most described indications were degenerative disc disease and spondylolisthesis. All rehabilitation interventions were delivered in the postoperative period, and six of them also included a preoperative component. Intervention dose and intensity varied between studies (ranging from one session to daily sessions for one month). Usual care consisted mostly of information and postoperative mobilization. At short term, low quality of evidence shows that exercise therapy was more effective for reducing disability and pain than usual care (standardized mean difference [95% CI]: -0.41 [-0.71; -0.10] and -0.36 [-0.65; -0.08], four and five studies, respectively). Multimodal rehabilitation consisted mostly of exercise therapy combined with cognitive behavioral training, and was more effective in reducing disability and pain-related fear than exercise therapy alone (-0.31 [-0.49; -0.13] and -0.64 [-1.11; -0.17], six and four studies, respectively). Effects disappeared beyond one year. Rehabilitation showed a positive tendency towards a higher return-to-work rate (pooled relative risk [95% CI]: 1.30 [0.99; 1.69], four studies)., Conclusion: There is low-quality evidence showing that both exercise therapy and multimodal rehabilitation are effective for improving outcomes up to six months after lumbar fusion, with multimodal rehabilitation providing additional benefits over exercise alone in reducing disability and pain-related fear. Additional high-quality studies are needed to demonstrate the effectiveness of rehabilitation strategies in the long term and for work-related outcomes., (© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2022
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6. The perception of oral health and oral care needs, barriers and current practices as perceived by managers and caregivers in organizations for people with disabilities in Flanders, Belgium.
- Author
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Phlypo I, Palmers E, Janssens L, Marks L, Jacquet W, and Declerck D
- Subjects
- Belgium, Humans, Surveys and Questionnaires, Caregivers, Disabled Persons, Oral Health
- Abstract
Objectives: To assess the perception of oral health and oral care needs, barriers and current practices as perceived by managers and caregivers in organizations for people with disabilities in Flanders., Materials and Methods: Two questionnaires were developed, one for managers and one for caregivers. The questionnaires were distributed in all 570 organizations for people with disabilities in Flanders. The survey was carried out in February 2018., Results: Sixty-five managers completed the questionnaire and 63 of them could be linked to 57 unique organizations (10% of the contacted organizations). Managers perceived oral health to be better (P = 0.019) and mentioned less oral health needs (P = 0.049), when collaboration with a dentist was reported. When an oral health policy had been established in their organization, oral health was also perceived to be better (P = 0.048). The responses of 91 caregivers were included for analysis and 87 of them could be linked to 39 unique organizations (7% of contacted organizations). Seventy percent and 75% of the caregivers mentioned to have enough/comprehensive theoretical knowledge and practical skills, respectively, and 46% were interested in receiving oral health education. Most interest was shown in practical education and education customized to clients' needs. In organizations with an oral health project, more caregivers indicated that the organization was open to oral health questions than in organizations without such a project (97% compared with 81%; P = 0.045). When there was a collaboration with a dentist, the organization was more open to caregivers' questions (96% compared with 72%; P = 0.004) and a clear contact point was more readily available (81% compared with 48%; P = 0.004). Furthermore, caregivers were more interested to receive oral health education (P = 0.023) and mentioned to be more aware of the oral health of their clients (P = 0.015). About 23% and 30% of the caregivers indicated that guidelines were used in their organization for cleaning natural teeth and prostheses, respectively., Conclusions: Despite the low response rate to the survey and reaching the management and caregivers of only 10% and 7% of the organizations respectively, this study indicates relevant issues to be incorporated when formulating recommendations for oral health promotion in people with disabilities in Flanders., Clinical Relevance: The results of this survey could affect the development of strategies and interventions to ameliorate the oral health of people with disabilities.
- Published
- 2020
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7. Postoperative bracing after lumbar surgery: a survey amongst spinal surgeons in Belgium.
- Author
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Bogaert L, Van Wambeke P, Thys T, Swinnen TW, Dankaerts W, Brumagne S, Moke L, Peers K, Depreitere B, and Janssens L
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- Belgium, Humans, Spinal Fusion, Surveys and Questionnaires, Braces statistics & numerical data, Lumbar Vertebrae surgery, Postoperative Care methods, Postoperative Care statistics & numerical data, Practice Patterns, Physicians' statistics & numerical data, Surgeons statistics & numerical data
- Abstract
Purpose: Bracing is frequently prescribed following lumbar surgery for degenerative conditions. However, previous studies failed to demonstrate the advantage of postoperative lumbar bracing in both short- and long-term outcome in terms of pain, quality of life and fusion rate. The purpose of this study was to assess the prescription patterns and rationale for postoperative bracing amongst spinal surgeons in Belgium., Methods: A 16-item online survey was distributed by email to spinal surgeons affiliated to the Spine Society of Belgium (N = 252)., Results: A total of 105 surgeons (42%) completed the survey. The overall bracing frequency following lumbar surgery was 38%. A brace was more often prescribed following the fusion procedures (52%) than after the non-fusion procedures (21%) (p < 0.0001). The majority of surgeons (59%) considered bracing after at least one type of lumbar surgery. Orthopaedic surgeons (73%) reported a significantly higher rate of prescribing postoperative bracing compared to neurosurgeons (44%) (p = 0.003). Pain alleviation (67%) was the main goal for prescribing a postoperative brace. A total of 42% of the surgeons aimed to improve fusion rate by bracing after lumbar fusion procedures. A quasi-equal level of the scientific literature (29%), personal experience (35%) and teaching from peers (36%) was reported to contribute on the attitudes towards prescribing bracing., Conclusions: Postoperative bracing was prescribed by Belgian spinal surgeons following more than one-third of lumbar procedures. This was underpinned by beliefs regarding pain alleviation and higher fusion rate. Interestingly, based on the scientific literature these beliefs have been demonstrated to be false. These slides can be retrieved under Electronic Supplementary Material.
- Published
- 2019
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8. Peak and submaximal steady-state metabolic and cardiorespiratory responses during arm-powered and arm-trunk-powered handbike ergometry in able-bodied participants.
- Author
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Verellen J, Meyer C, Janssens L, and Vanlandewijck Y
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- Adult, Athletes, Competitive Behavior physiology, Exercise Test instrumentation, Humans, Male, Metabolism physiology, Models, Biological, Posture physiology, Young Adult, Arm physiology, Bicycling physiology, Heart Rate physiology, Respiratory Rate physiology, Torso physiology, Wheelchairs
- Abstract
The purpose of this study was to compare the peak and submaximal metabolic and cardiorespiratory responses during steady-state arm-powered (AP) and arm-trunk-powered (ATP) handbike ergometry. Twelve male able-bodied participants with no prior experience in handcycling completed a maximal progressive incremental test and a series of 6-minute submaximal tests at 130 W with various cadences in a custom-designed handbike ergometer that allowed a realistic simulation of AP and ATP handcycling. Peak power output, peak oxygen uptake, and peak ventilation were significantly lower, whereas peak blood lactate concentration was significantly higher during AP handcycling. Mean gross mechanical efficiency was significantly higher during AP handcycling (range 16.7 to 20.5%) compared with ATP handcycling (range 15.8 to 17.6%). These results suggest that AP handcycling is advantageous during submaximal steady-state handcycling, whereas ATP handcycling allows for a higher peak power output generation. However, it remains unclear which handbike configuration would be favorable during competition.
- Published
- 2012
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9. The effect of acute back muscle fatigue on postural control strategy in people with and without recurrent low back pain.
- Author
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Johanson E, Brumagne S, Janssens L, Pijnenburg M, Claeys K, and Pääsuke M
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- Adolescent, Adult, Female, Humans, Male, Proprioception physiology, Low Back Pain physiopathology, Muscle Fatigue physiology, Muscle, Skeletal physiopathology, Posture physiology
- Abstract
Back muscle fatigue decreases the postural stability during quiet standing, but it is not known whether this fatigue-induced postural instability is due to an altered proprioceptive postural control strategy. Therefore, the aim of the study was to evaluate if acute back muscle fatigue may be a mechanism to induce or sustain a suboptimal proprioceptive postural control strategy in people with and without recurrent low back pain (LBP). Postural sway was evaluated on a force platform in 16 healthy subjects and 16 individuals with recurrent LBP during a control (Condition 1) and a back muscle fatigue condition (Condition 2). Back muscle fatigue was induced by performing a modified Biering-Sørensen test. Ankle and back muscle vibration, a potent stimulus for muscle spindles, was used to differentiate proprioceptive postural control strategies during standing on a stable and unstable support surface, where the latter was achieved by placing a foam pad under the feet. Ankle signals were predominantly used for postural control in all subjects although, in each condition, their influence was greater in people with LBP compared to healthy subjects (p < 0.001). The latter group adapted their postural control strategy when standing on an unstable surface so that input from back muscles increased (p < 0.001). However, such adaptation was not observed when the back muscles were fatigued. Furthermore, people with LBP continued to rely strongly on ankle proprioception regardless of the testing conditions. In conclusion, these findings suggest that impaired back muscle function, as a result of acute muscle fatigue or pain, may lead to an inability to adapt postural control strategies to the prevailing conditions.
- Published
- 2011
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10. Decreased variability in postural control strategies in young people with non-specific low back pain is associated with altered proprioceptive reweighting.
- Author
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Claeys K, Brumagne S, Dankaerts W, Kiers H, and Janssens L
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- Female, Humans, Male, Postural Balance, Sensation Disorders physiopathology, Vibration, Weight-Bearing, Young Adult, Low Back Pain physiopathology, Muscle, Skeletal physiology, Posture physiology, Proprioception physiology
- Abstract
Optimal postural control is an essential capacity in daily life and can be highly variable. The purpose of this study was to investigate if young people have the ability to choose the optimal postural control strategy according to the postural condition and to investigate if non-specific low back pain (NSLBP) influences the variability in proprioceptive postural control strategies. Young individuals with NSLBP (n = 106) and healthy controls (n = 50) were tested on a force plate in different postural conditions (i.e., sitting, stable support standing and unstable support standing). The role of proprioception in postural control was directly examined by means of muscle vibration on triceps surae and lumbar multifidus muscles. Root mean square and mean displacements of the center of pressure were recorded during the different trials. To appraise the proprioceptive postural control strategy, the relative proprioceptive weighting (RPW, ratio of ankle muscles proprioceptive inputs vs. back muscles proprioceptive inputs) was calculated. Postural robustness was significantly less in individuals with NSLBP during the more complex postural conditions (p < 0.05). Significantly higher RPW values were observed in the NSLBP group in all postural conditions (p < 0.05), suggesting less ability to rely on back muscle proprioceptive inputs for postural control. Therefore, healthy controls seem to have the ability to choose a more optimal postural control strategy according to the postural condition. In contrast, young people with NSLBP showed a reduced capacity to switch to a more multi-segmental postural control strategy during complex postural conditions, which leads to decreased postural robustness.
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- 2011
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11. Persons with recurrent low back pain exhibit a rigid postural control strategy.
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Brumagne S, Janssens L, Knapen S, Claeys K, and Suuden-Johanson E
- Subjects
- Case-Control Studies, Electromyography, Female, Humans, Male, Postural Balance physiology, Proprioception physiology, Young Adult, Low Back Pain physiopathology, Muscle Contraction physiology, Posture physiology
- Abstract
Persons with recurrent low back pain (LBP) have been observed to have altered proprioceptive postural control. These patients seem to adopt a body and trunk stiffening strategy and rely more on ankle proprioception to control their posture during quiet upright standing. The aim of this study is to determine the effect of changing postural condition (stable and unstable support surface) on postural stability and proprioceptive postural control strategy in persons with recurrent LBP. Postural sway characteristics of 21 persons with recurrent LBP and 24 healthy individuals were evaluated in upright posture with or without standing on "foam" for the conditions as follows: (1) control (no vibration); (2) vibration of the triceps surae muscles; (3) paraspinal muscle vibration; (4) vibration of the tibialis anterior muscles. Vision was occluded in all conditions except for one control trial. All trials lasted 60 s. Vibration (60 Hz, 0.5 mm), as a potent stimulus for muscle spindles, was initiated 15 s after the start of the trial for a duration of 15 s. Persons with recurrent LBP showed significantly different postural control strategies favoring ankle muscle proprioceptive control (ratio closer to 1) instead of paraspinal muscle proprioceptive control (ratio closer to 0) for both standing without foam (ratio ankle muscle/paraspinal muscle control = 0.83) (P < 0.0001) and on foam (ratio ankle muscle/paraspinal muscle control = 0.87; P < 0.0001) compared to healthy individuals (0.67 and 0.46, respectively). It is concluded that young persons with recurrent LBP seem to use the same proprioceptive postural control strategy even in conditions when this ankle strategy is not the most appropriate such as standing on an unstable support surface. The adopted proprioceptive postural control strategy might be effective in simple conditions, however, when used in all postural conditions this could be a mechanism to undue spinal loading, pain and recurrences.
- Published
- 2008
- Full Text
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