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1.
Disabil Rehabil ; : 1-9, 2023 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-37950406

RESUMO

PURPOSE: This focus group study aimed to explore experiences and perceptions on post-stroke fatigue guidance in Dutch rehabilitation and follow-up care among people/patients with stroke and health professionals. METHODS: Ten persons with stroke and twelve health professionals with different professions within stroke rehabilitation or follow-up care in the Netherlands were purposively sampled and included. Eight online focus group interviews were conducted. We analysed the data using reflexive thematic analysis. RESULTS: Three themes were identified. Guidance in fatigue management did not always match the needs of people/patients with stroke. Professionals were positive about the provided fatigue guidance (e.g. advice on activity pacing), but found it could be better tailored to the situation of people/patients with stroke. Professionals believe the right time for post-stroke fatigue guidance is when people/patients with stroke are motivated to change physical activity behaviour to manage fatigue - mostly several months after stroke - while people/patients with stroke preferred information on post-stroke fatigue well before discharge. Follow-up care and suggestions for improvement described that follow-up support after rehabilitation by a stroke coach is not implemented nationwide, while people/patients with stroke and professionals expressed a need for it. CONCLUSIONS: The study findings will help guide improvement of fatigue guidance in stroke rehabilitation programmes and stroke follow-up care aiming to improve physical activity, functioning, participation, and health.


We recommend fatigue guidance, including peer support, to be accessible to all people after stroke and for health professionals to pay attention to acceptance of the stroke.To improve fatigue guidance, we suggest providing information on post-stroke fatigue to people after stroke and their relatives well before discharge from stroke rehabilitation.Tailored advice on activity pacing during and after stroke rehabilitation is important to fill the current unmet need of people after stroke to manage fatigue and to gradually improve participation, physical activity behaviour and health.We recommend to health professionals working in stroke rehabilitation to tailor the rehabilitation schedule to their patients' energy level and perception of fatigue levels.

2.
Lung Cancer ; 161: 42-48, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34509720

RESUMO

OBJECTIVES: Data on national patterns of care for patients with superior sulcus tumors (SST) is currently lacking. We investigated the distribution of surgical care and outcome for patients with SST in the Netherlands. MATERIAL AND METHODS: Data was retrieved from the Dutch Lung Cancer Audit for Surgery (DLCA-S) for all patients undergoing resection for clinical stage IIB-IV SST from 2012 to 2019. Because DLCA-S is not linked to survival data, survival for a separate cohort (2015-2017) was obtained from the Netherlands Cancer Registry (NCR). RESULTS: In the study period, 181 patients had SST surgery, representing 1.03% (181/17488) of all lung cancer pulmonary resections. For 2015-2017, the SST resection rate was 14.4% (79/549), and patients with stage IIB/III SST treated with trimodality had a 3-year overall survival of 67.4%. 63.5% of patients were male, and median age was 60 years. Almost 3/4 of tumors were right sided. Surgery was performed in 20 hospitals, with average number of annual resections ranging from ≤ 1 (n = 17) to 9 (n = 1). 39.8% of resections were performed in 1 center and 63.5% in the 3 most active centers. 12.7% of resections were extended (e.g. vertebral resection). 85.1% of resections were complete (R0). Morbidity and 30-day mortality were 51.4% and 3.3% respectively. Despite treating patients with a higher ECOG performance score and more extended resections, the highest volume center had rates of morbidity/mortality, and length of hospital stay that were comparable to those of the medium volume (n = 2) and low-volume centers (n = 1). CONCLUSION: In the Netherlands, surgery for SST accounts for about 1% of all lung cancer pulmonary resections, the number of SST resections/hospital/year varies widely, with most centers performing an average of ≤ 1/year. Morbidity and mortality are acceptable and survival compares favourably with the literature. Although further centralisation is possible, it is unknown whether this will improve outcomes.


Assuntos
Neoplasias Pulmonares , Estudos de Coortes , Humanos , Neoplasias Pulmonares/epidemiologia , Neoplasias Pulmonares/cirurgia , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Sistema de Registros
3.
Qual Life Res ; 30(1): 67-80, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32986126

RESUMO

PURPOSE: To identify Health-related Quality of Life (HR-QoL) trajectories in a large heterogeneous cohort of people with a physical disability and/or chronic disease during and after rehabilitation and to determine which factors before discharge are associated with longitudinal trajectory membership. METHODS: A total of 1100 people with a physical disability and/or chronic disease were included from the longitudinal cohort study Rehabilitation, Sports and Active lifestyle. All participants participated in a physical activity promotion programme in Dutch rehabilitation care. HR-QoL was assessed using the RAND-12 Health Status Inventory questionnaire at baseline (T0: 3-6 weeks before discharge) and at 14 (T1), 33 (T2) and 52 (T3) weeks after discharge from rehabilitation. A data-driven approach using Latent Class Growth Mixture modelling was used to determine HR-QoL trajectories. Multiple binomial multivariable logistic regression analyses were used to determine person-, disease- and lifestyle-related factors associated with trajectory membership. RESULTS: Three HR-QoL trajectories were identified: moderate (N = 635), high (N = 429) and recovery (N = 36). Trajectory membership was associated with person-related factors (age and body mass index), disease-related factors (perceived fatigue, perceived pain and acceptance of the disease) and one lifestyle-related factor (alcohol consumption) before discharge from rehabilitation. CONCLUSIONS: Most of the people who participated in a physical activity promotion programme obtained a relatively stable but moderate HR-QoL. The identified HR-QoL trajectories among our heterogeneous cohort are disease-overarching. Our findings suggest that people in rehabilitation may benefit from person-centred advice on management of fatigue and pain (e.g. activity pacing) and the acceptance of the disability.


Assuntos
Pessoas com Deficiência/psicologia , Promoção da Saúde/métodos , Qualidade de Vida/psicologia , Doença Crônica , Estudos de Coortes , Exercício Físico , Feminino , Humanos , Estilo de Vida , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários
4.
Pathol Res Pract ; 216(11): 153172, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32858373

RESUMO

Locally advanced head and neck squamous cell carcinoma (LAHNSCC) treatment consists of radiotherapy (RT) alone or cisplatin-based concomitant chemoradiotherapy (CCRT). CCRT is accompanied by substantially more toxicity than RT alone. A previous retrospective cohort study found that LAHNSCC patients with tumors negative for nuclear expression of the signal transducer and activator of transcription 3 (STAT3) protein might not benefit from the addition of cisplatin to radiotherapy (RT) treatment. We set out to validate these results in a new cohort. We found that in patients with both STAT3 positive and negative tumors, disease-free survival (DFS) and overall survival (OS) did not differ significantly between treatment with cisplatin-based concomitant chemoradiotherapy (CCRT) and radiotherapy alone. Therefore, our validation study does not confirm that STAT3 is a potential biomarker to predict the effectiveness of the addition of cisplatin to RT in LAHNSCC patients.


Assuntos
Biomarcadores Tumorais/metabolismo , Neoplasias de Cabeça e Pescoço/metabolismo , Fator de Transcrição STAT3/metabolismo , Adulto , Idoso , Antineoplásicos/uso terapêutico , Quimiorradioterapia , Cisplatino/uso terapêutico , Feminino , Neoplasias de Cabeça e Pescoço/mortalidade , Neoplasias de Cabeça e Pescoço/patologia , Neoplasias de Cabeça e Pescoço/terapia , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Radioterapia , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
5.
IEEE Trans Neural Syst Rehabil Eng ; 28(4): 953-960, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32070986

RESUMO

The measurement of handrim wheelchair propulsion characteristics and performance in the field is complicated due to the non-stationary nature of wheelchair driving. In contrast, the laboratory provides a constrained and standardisable environment to conduct measurements and experiments. Apart from wheelchair treadmills, dynamometers or ergometers for handrim wheelchairs are often custom-made, one-of-a-kind, expensive, and sparsely documented in the research literature. To facilitate standardised and comparable lab-based measurements in research, as well as in clinical settings and adapted sports, a new wheelchair ergometer was developed. The ergometer with instrumented dual rollers allows for the performance analysis of individuals in their personal handrim wheelchair and facilitates capacity assessment, training and skill acquisition in rehabilitation or adapted sports. The ergometer contains two servomotors, one for each rear wheel roller, that allow for the simulation of translational inertia and resistive forces as encountered during wheelchair propulsion based on force input and a simple mechanical model of wheelchair propulsion. A load cell configuration for left and right roller enables the measurement of effective user-generated torque and force on the handrim and the concomitant timing patterns. Preliminary results are discussed.


Assuntos
Cadeiras de Rodas , Fenômenos Biomecânicos , Ergometria , Teste de Esforço , Humanos , Torque
6.
Hum Mov Sci ; 67: 102498, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31330475

RESUMO

BACKGROUND: In a previous study it was observed that participants increase their walking speed during a dual task while walking on a self-paced treadmill in a virtual reality (VR) environment (Gait Real time Analysis Interactive Lab (GRAIL)). This observation is in contrast with the limited resources hypothesis, which suggests walking speed of healthy persons to decrease when performing a cognitive dual task. AIM: The aim of the present study was therefore to determine whether the cognitive demand of the task, an aroused feeling, discrepancy in optic flow or a change in gaze direction caused participants to walk faster in this computer assisted rehabilitation environment. MATERIALS: The GRAIL included a self-paced treadmill, a motion-capture system and synchronized VR environments. METHODS: Thirteen healthy young adults (mean age 21.6 ±â€¯2.5) were included in this study. Participants walked on the self-paced treadmill while seven different intervention conditions (IC) were offered. Prior to each IC, a control condition (CC) was used to determine the natural self-selected walking speed. Walking speed during the last 30 s of each IC was compared with the walking speed during the last 30 s of the preceding CC. RESULTS: Results show that the height on which a visual task was presented in the VR environment, influenced walking speed. Participants walked faster when gaze was directed above the focus of expansion. SIGNIFICANCE: These findings contribute to a further understanding of the differences between walking in a real life environment or computer assisted rehabilitation environment. When analyzing gait on a self-paced treadmill in the future, one must be attentive where to place a visual stimulus in the VR environment.


Assuntos
Fixação Ocular/fisiologia , Realidade Virtual , Velocidade de Caminhada/fisiologia , Adulto , Cognição/fisiologia , Teste de Esforço/métodos , Feminino , Humanos , Masculino , Fluxo Óptico/fisiologia , Teste de Stroop , Interface Usuário-Computador , Adulto Jovem
7.
Patient Educ Couns ; 102(2): 340-345, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30173877

RESUMO

OBJECTIVE: An inadequate surgical informed consent process (SIC) may result in a medical malpractice claim or medical disciplinary board (MDB) complaint. Aim of this study was to analyse characteristics of a decade of malpractice claims and MDB decisions regarding SIC in the Netherlands. METHODS: A retrospective analysis of malpractice claims and MDB decisions concerning SIC disputes in four major surgical specialties was conducted based on company data from the largest medical malpractice insurance company and two public available online MDB databases. RESULTS: A total of 11376 malpractice claims and 661 MDB complaints were filed between 2004-2013 and 676(6%) of these claims and 69(10%) of these complaints involved an alleged deficient SIC process. A random sample of 245(37%) claims and all MDB decisions were analysed. Reasons for filing a claim or complaint were insufficient counselling or recording of SIC elements. In 20% of lawsuits and 25% of claims the case resulted in favour of the complainant. CONCLUSION: A substantial portion of malpractice claims and MDB decisions is related to a deficient SIC process. PRACTICE IMPLICATIONS: Focusing on crucial SIC elements for patients may improve satisfaction and expectations and result in a lower risk for malpractice claims and MDB complaints.


Assuntos
Compensação e Reparação , Consentimento Livre e Esclarecido/legislação & jurisprudência , Revisão da Utilização de Seguros/estatística & dados numéricos , Imperícia/legislação & jurisprudência , Procedimentos Cirúrgicos Operatórios/estatística & dados numéricos , Compensação e Reparação/legislação & jurisprudência , Feminino , Procedimentos Cirúrgicos em Ginecologia/estatística & dados numéricos , Humanos , Consentimento Livre e Esclarecido/estatística & dados numéricos , Masculino , Imperícia/estatística & dados numéricos , Países Baixos , Procedimentos Ortopédicos/estatística & dados numéricos , Procedimentos de Cirurgia Plástica/estatística & dados numéricos , Estudos Retrospectivos , Cirurgiões , Cirurgia Plástica/estatística & dados numéricos , Procedimentos Cirúrgicos Operatórios/efeitos adversos
8.
Scand J Med Sci Sports ; 28(5): 1586-1593, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29350429

RESUMO

The purpose of this study was to examine the propulsion asymmetries of wheelchair athletes while sprinting on an instrumented, dual-roller ergometer system. Eighteen experienced wheelchair rugby players (8 low point (LP) (class ≤1.5) and 10 high point (HP) (class ≥2.0)) performed a 15-second sprint in their sports wheelchair on the instrumented ergometer. Asymmetry was defined as the difference in distance and power output (PO) between left and right sides when the best side reached 28 m. Propulsion techniques were quantified based on torque and velocity data. HP players covered an average 3 m further than the LP players (P = .002) and achieved faster sprint times than LP players (6.95 ± 0.89 vs 8.03 ± 0.68 seconds, P = .005) and at the time the best player finished (5.96 seconds). Higher peak POs (667 ± 108 vs 357 ± 78 W, P = .0001) and greater peak speeds that were also evident were for HP players (4.80 ± 0.71 vs 4.09 ± 0.45 m/s, P = .011). Greater asymmetries were found in HP players for distance (1.86 ± 1.43 vs 0.70 ± 0.65 m, P = .016), absolute peak PO (P = .049), and speed (0.35 ± 0.25 vs 0.11 ± 0.10 m/s, P = .009). Although HP players had faster sprint times over 28 m (achieved by a higher PO), high standard deviations show the heterogeneity within the two groups (eg, some LP players were better than HP players). Quantification of asymmetries is important not only for classifiers but also for sports practitioners wishing to improve performance as they could be addressed through training and/or wheelchair configuration.


Assuntos
Desempenho Atlético , Pessoas com Deficiência , Futebol Americano , Cadeiras de Rodas , Adulto , Atletas , Fenômenos Biomecânicos , Ergometria , Humanos , Torque
9.
J Neuroeng Rehabil ; 12: 70, 2015 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-26298647

RESUMO

BACKGROUND: Holding a handrail or using a cane may decrease the energy cost of walking in stroke survivors. However, the factors underlying this decrease have not yet been previously identified. The purpose of the current study was to fill this void by investigating the effect of physical support (through handrail hold) and/or somatosensory input (through light touch contact with a handrail) on energy cost and accompanying changes in both step parameters and neuromuscular activity. Elucidating these aspects may provide useful insights into gait recovery post stroke. METHODS: Fifteen stroke survivors participated in this study. Participants walked on a treadmill under three conditions: no handrail contact, light touch of the handrail, and firm handrail hold. During the trials we recorded oxygen consumption, center of pressure profiles, and bilateral activation of eight lower limb muscles. Effects of the three conditions on energy cost, step parameters and neuromuscular activation were compared statistically using conventional ANOVAs with repeated measures. In order to examine to which extent energy cost and step parameters/muscle activity are associated, we further employed a partial least squares regression analysis. RESULTS: Handrail hold resulted in a significant reduction in energy cost, whereas light touch contact did not. With handrail hold subjects took longer steps with smaller step width and improved step length symmetry, whereas light touch contact only resulted in a small but significant decrease in step width. The EMG analysis indicated a global drop in muscle activity, accompanied by an increased constancy in the timing of this activity, and a decreased co-activation with handrail hold, but not with light touch. The regression analysis revealed that increased stride time and length, improved step length symmetry, and decreased muscle activity were closely associated with the decreased energy cost during handrail hold. CONCLUSION: Handrail hold, but not light touch, altered step parameters and was accompanied by a global reduction in muscle activity, with improved timing constancy. This suggests that the use of a handrail allows for a more economic step pattern that requires less muscular activation without resulting in substantial neuromuscular re-organization. Handrail use may thus have beneficial effects on gait economy after stroke, which cannot be accomplished through enhanced somatosensory input alone.


Assuntos
Metabolismo Energético , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral/fisiopatologia , Tato , Caminhada , Idoso , Algoritmos , Fenômenos Biomecânicos , Bengala , Eletromiografia , Feminino , Marcha , Mãos , Humanos , Extremidade Inferior/inervação , Extremidade Inferior/fisiopatologia , Masculino , Pessoa de Meia-Idade , Músculo Esquelético/inervação , Músculo Esquelético/fisiopatologia , Consumo de Oxigênio , Sobreviventes
10.
Med Eng Phys ; 37(4): 392-9, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25726151

RESUMO

The aim of the current investigation was to explore the lateral stiffness of different sports wheelchair wheels available to athletes in 'new' and 'used' conditions and to determine the effect of (a) stiffness, (b) tyre type (clincher vs. tubular) and (c) tyre orientation on the physiological and biomechanical responses to submaximal and maximal effort propulsion specific to wheelchair basketball. Eight able-bodied individuals participated in the laboratory-based testing, which took place on a wheelchair ergometer at two fixed speeds (1.1 and 2.2 m s(-1)). Outcome measures were power output and physiological demand (oxygen uptake and heart rate). Three participants with experience of over-ground sports wheelchair propulsion also performed 2 × 20 m sprints in each wheel configuration. Results revealed that wheels differed significantly in lateral stiffness with the 'new' Spinergy wheel shown to be the stiffest (678.2 ± 102.1 N mm(-1)). However the effects of stiffness on physiological demand were minimal compared to tyre type whereby tubular tyres significantly reduced the rolling resistance and power output in relation to clincher tyres. Therefore tyre type (and subsequently inflation pressure) remains the most important aspect of wheel specification for athletes to consider and monitor when configuring a sports wheelchair.


Assuntos
Basquetebol/fisiologia , Esportes para Pessoas com Deficiência/fisiologia , Cadeiras de Rodas , Adulto , Elasticidade , Desenho de Equipamento , Ergometria , Frequência Cardíaca , Humanos , Masculino , Consumo de Oxigênio , Pressão
11.
Spinal Cord ; 53(5): 395-401, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25622729

RESUMO

STUDY DESIGN: This is an open randomized controlled trial. OBJECTIVE: The objective of this study was to investigate the effects of a 16-week hybrid cycle versus handcycle exercise program on fitness and physical activity in inactive people with long-term spinal cord injury (SCI). SETTING: The study was conducted in two rehabilitation centers with a specialized SCI unit. METHODS: Twenty individuals (SCI⩾8 years) were randomly assigned to a hybrid cycle (voluntary arm exercise combined with functional electrical stimulation (FES)-induced leg exercise) or a handcycle group. During 16 weeks, both groups trained twice a week for 30 min at 65-75% heart rate reserve. Outcome measures obtained before, during and after the program were fitness (peak power output, peak oxygen consumption), submaximal VO2 and heart rate (HR), resting HR, wheelchair skill performance time score) and physical activity (distance travelled in wheelchair and Physical Activity Scale for Individuals with Physical Disabilities (PASIPD) score). Changes were examined using a two-factor mixed-measures analysis of variance. RESULTS: For all fitness parameters, except for submaximal VO2, no interaction effects were found. The hybrid cycle group showed a decrease in VO2 over time in contrast to the handcycle group (P=0.045). An overall reduction in HRrest (5±2 b.p.m.; P=0.03) and overall increase in PASIPD score (6.5±2.1; P=0.002) were found after 16 weeks of training. No overall training effects were found for the other fitness and activity outcome measures. CONCLUSION: In the current study, hybrid cycling and handcycling showed similar effects on fitness and physical activity, indicating that there seem to be no additional benefits of the FES-induced leg exercise over handcycle training alone.


Assuntos
Terapia por Exercício/métodos , Atividade Motora/fisiologia , Traumatismos da Medula Espinal/fisiopatologia , Traumatismos da Medula Espinal/reabilitação , Cadeiras de Rodas , Adulto , Idoso , Terapia por Estimulação Elétrica , Teste de Esforço , Terapia por Exercício/instrumentação , Feminino , Seguimentos , Frequência Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Consumo de Oxigênio , Aptidão Física , Centros de Reabilitação , Cadeiras de Rodas/classificação
12.
Gait Posture ; 40(4): 616-21, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25108643

RESUMO

The aim of this study was to examine whether impaired balance control is partly responsible for the increased energy cost of walking in persons with a lower limb amputation (LLA). Previous studies used external lateral stabilization to evaluate the energy cost for balance control; this caused a decrease in energy cost, with concomitant decreases in mean and variability of step width. Using a similar set-up, we expected larger decreases for LLA than able-bodied controls. Fifteen transtibial amputees (TT), 12 transfemoral amputees (TF), and 15 able-bodied controls (CO) walked with and without external lateral stabilization provided via spring like cords attached to the waist. Effects of this manipulation on energy cost, step parameters, and pelvic motion were evaluated between groups. TT (-5%) and CO (-3%) showed on average a small reduction in energy cost when walking with stabilization, whereas TF exhibited an increase in energy cost (+6.5%) The difference in the effect of stabilization was only significant between TT and TF. Step width, step width variability, and medio-lateral pelvic displacement decreased significantly with stabilization in all groups, especially in TT. Contrary to expectations, external lateral stabilization did not result in a larger decrease in the energy cost of walking for LLA compared to able-bodied controls, suggesting that balance control is not a major factor in the increased cost of walking in LLA. Alternatively, the increased energy cost with stabilization for TF suggests that restraining (medio-lateral) pelvic motion impeded necessary movement adaptations in LLA, and thus negated the postulated beneficial effects of stabilization on the energy cost of walking.


Assuntos
Amputados , Metabolismo Energético , Equilíbrio Postural/fisiologia , Caminhada/fisiologia , Adaptação Fisiológica/fisiologia , Adulto , Estudos de Casos e Controles , Avaliação da Deficiência , Teste de Esforço , Feminino , Fêmur/cirurgia , Humanos , Masculino , Movimento/fisiologia , Consumo de Oxigênio/fisiologia , Tíbia/cirurgia
13.
Appl Ergon ; 45(3): 686-92, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24094586

RESUMO

The aim of this study was to develop a more efficient (i.e. shortened) protocol for hand function capacity evaluation and to test the agreement of the protocol compared to the original protocol. 643 Healthy subjects performed tests for hand function. Agreement between two shortened protocols was compared with an existing protocol. The original protocol was performed once and the proposed shortened protocol differed in the number of trials which were reduced by statistical elimination. Agreement was determined with Intraclass Correlation Coefficients (ICC) and Limits of Agreement (LoA). Excellent ICCs (≥0.91) were observed in all proposed protocols except for the one trial purdue pegboard test protocol. For all tests of hand function, shorter protocols are valid to determine hand function. For Tip Pinch Strength testing, Palmar Pinch Strength testing and the Purdue Pegboard test, a two-trial protocol is recommended, because the LoA were considerable, which could affect decision-making with regards to hand capacity. For the Hand Grip strength test, the Key Pinch Strength test and the Complete Minnesota Dexterity Test, a one-trial protocol is recommended, because the LoA were acceptable. It was concluded that for healthy subjects, this shorter protocol is a reliable measure. Further testing of the short form hand FCE protocols should be completed on patients with disabling conditions prior to widespread use of these protocols among clinical samples.


Assuntos
Força da Mão/fisiologia , Mãos/fisiologia , Atividades Cotidianas , Adulto , Avaliação da Deficiência , Feminino , Dedos/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Força de Pinça , Adulto Jovem
14.
Int J Sports Med ; 35(3): 223-31, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23945971

RESUMO

To compare the force application characteristics at various push frequencies of asynchronous (ASY) and synchronous (SYN) hand-rim propulsion, 8 able-bodied participants performed a separate sub-maximal exercise test on a wheelchair roller ergometer for each propulsion mode. Each test consisted of a series of 5, 4-min exercise blocks at 1.8 m · s-1 - initially at their freely chosen frequency (FCF), followed by four counter-balanced trials at 60, 80, 120 and 140% FCF. Kinetic data was obtained using a SMARTWheel, measuring forces and moments. The gross efficiency (GE) was determined as the ratio of external work done and the total energy expended. The ASY propulsion produced higher force measures for FRES, FTAN, rate of force development & FEF (P<0.05), while there was no difference in GE values (P=0.518). In pair-matched push frequencies (ASY80:SYN60, ASY100:SYN80, ASY120:SYN100 and ASY140:SYN120), ASY propulsion forces remained significantly higher (FRES, FTAN, rate of force development & FEF P<0.05), and there was no significant effect on GE (P=0.456). Both ASY and SYN propulsion demonstrate similar trends: changes in push frequency are accompanied by changes in absolute force even without changes in the gross pattern/trend of force application, FEF or GE. Matched push frequencies continue to produce significant differences in force measures but not GE. This suggests ASY propulsion is the predominant factor in force application differences. The ASY would appear to offer a kinetic disadvantage to SYN propulsion and no physiological advantage under current testing conditions.


Assuntos
Braço/fisiologia , Eficiência/fisiologia , Esforço Físico/fisiologia , Cadeiras de Rodas , Adulto , Fenômenos Biomecânicos , Metabolismo Energético/fisiologia , Mãos/fisiologia , Frequência Cardíaca , Humanos , Masculino , Respiração , Análise e Desempenho de Tarefas , Adulto Jovem
15.
Scand J Med Sci Sports ; 24(2): 386-94, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22989023

RESUMO

Handbikes come in different models and setups, but only limited knowledge is available on the handbike-user interface. The aim of this study was to identify optimal handbike setups, assuming that in such a setup mechanical efficiency is high, while shoulder load is low. Thirteen subjects with a spinal cord injury (paraplegia) performed handcycling with different handbike setups at constant power output: four crank positions (two distances, two heights) and four backrest inclinations. The O2-consumption, kinetics, and kinematics were measured to calculate mechanical efficiency and shoulder load (glenohumeral contact force, net shoulder moments, and rotator cuff force). The analysis showed that more upright backrest positions resulted in lower shoulder load compared with the most reclined position [glenohumeral contact force (260 vs 335 N), supraspinatus (14.4% vs 18.2%), and infraspinatus force (5.4% vs 9.8%)], while there was no difference in efficiency. Except for a reduction in subscapularis force at the distant position, no differences in shoulder load or efficiency were found between crank positions. Recreational handbike users, who want to improve their physical capacity in a shoulder-friendly way, should set up their handbike with a more upright backrest position and a distant crank placement.


Assuntos
Ciclismo/fisiologia , Músculo Esquelético/fisiologia , Paraplegia/fisiopatologia , Postura/fisiologia , Articulação do Ombro/fisiologia , Equipamentos Esportivos , Adulto , Fenômenos Biomecânicos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Força Muscular/fisiologia , Consumo de Oxigênio/fisiologia , Paraplegia/etiologia , Ombro/fisiologia , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/fisiopatologia
16.
J Appl Biomech ; 29(6): 687-95, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23343659

RESUMO

The aim of the study was to evaluate the external applied forces, the effectiveness of force application and the net shoulder moments of handcycling in comparison with handrim wheelchair propulsion at different inclines. Ten able-bodied men performed standardized exercises on a treadmill at inclines of 1%, 2.5% and 4% with an instrumented handbike and wheelchair that measured three-dimensional propulsion forces. The results showed that during handcycling significantly lower mean forces were applied at inclines of 2.5% (P < .001) and 4% (P < .001) and significantly lower peak forces were applied at all inclines (1%: P = .014, 2.5% and 4%: P < .001). At the 2.5% incline, where power output was the same for both devices, total forces (mean over trial) of 22.8 N and 27.5 N and peak forces of 40.1 N and 106.9 N were measured for handbike and wheelchair propulsion. The force effectiveness did not differ between the devices (P = .757); however, the effectiveness did increase with higher inclines during handcycling whereas it stayed constant over all inclines for wheelchair propulsion. The resulting peak net shoulder moments were lower for handcycling compared with wheelchair propulsion at all inclines (P < .001). These results confirm the assumption that handcycling is physically less straining.


Assuntos
Força da Mão/fisiologia , Mãos/fisiologia , Modelos Biológicos , Movimento/fisiologia , Esforço Físico/fisiologia , Articulação do Ombro/fisiologia , Cadeiras de Rodas , Adulto , Simulação por Computador , Transferência de Energia/fisiologia , Humanos , Masculino , Valores de Referência , Estresse Mecânico , Análise e Desempenho de Tarefas
17.
Int J Sports Med ; 34(2): 158-64, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22918717

RESUMO

To determine the effects of push frequency changes on force application, fraction of effective force (FEF) and gross efficiency (GE) during hand-rim propulsion. 8 male able-bodied participants performed five 4-min sub-maximal exercise bouts at 1.8 ms(-1); the freely chosen frequency (FCF), followed by 4 counter-balanced trials at 60, 80, 120 and 140% FCF. Kinetic data was obtained using a SMART(Wheel), measuring forces and moments. The GE was determined as the ratio of external work done and the total energy expended. Increased push frequency led to reductions in peak resultant force (P<0.05), ranging from 167 to 117 N and peak tangential force (P<0.05), ranging from 117 to 77 N. However, FEF only demonstrated a significant difference between 60% and 140% FCF (69 ± 9% and 63 ± 7, respectively; P<0.05). Work per cycle decreased significantly (P<0.05) and rate of force development increased significantly (P<0.05) with increased push frequency. GE values were significantly lower at 60%, 120% and 140% FCF than 80% and 100% FCF (P<0.05). No meaningful associations were present between FEF and GE. Under the current testing conditions, changes in push frequency are accompanied with changes in the absolute force values, albeit without changes in either the gross pattern/trend of force application or FEF. Changes in GE are not explained by different levels of force effectiveness.


Assuntos
Eficiência , Mãos/fisiologia , Locomoção/fisiologia , Esforço Físico/fisiologia , Cadeiras de Rodas , Adulto , Fenômenos Biomecânicos , Ergometria , Humanos , Masculino
18.
Spinal Cord ; 51(4): 314-8, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23208541

RESUMO

OBJECTIVE: To investigate: (1) the course of coronary heart disease risk factors (lipid profiles and body mass index (BMI)) in the first five years after discharge from inpatient spinal cord injury (SCI) rehabilitation and (2) the association between lifestyle (physical activity, self-care related to fitness, smoking, alcohol, body mass and low-fat diet) and coronary heart disease risk factors during that period. DESIGN: Prospective cohort study. PARTICIPANTS/METHODS: Individuals with SCI (N=130). Total cholesterol (TC), high-density lipoprotein (HDL), low-density lipoprotein (LDL), triglycerides (TG) and BMI were determined at discharge from inpatient rehabilitation and 1 and 5 years after discharge. Using multilevel regression models, the effects of lifestyle (drinking alcohol, smoking, active lifestyle and self-care) on the lipid profiles and BMI were determined. RESULTS: After correction for lesion and personal characteristics, no changes in lipid profiles in the five years after discharge were seen, whereas the BMI increased significantly with 1.8 kg m(-2). A high percentage was at risk of cardiovascular disease due to high BMI (63-75%) or HDL (66-95%). The individuals who indicated to maintain their fitness level as good as possible and the individuals with a low BMI showed better lipid profiles. Individuals with a more active lifestyle showed higher HDL levels. Individuals who avoid smoking showed a 1.5 kg m(-2) higher BMI. CONCLUSION: Lipid profiles seem to stabilize in the years after discharge from inpatient SCI rehabilitation, whereas the BMI increased. Lifestyle factors associated with a favorable lipid profile and BMI could be identified.


Assuntos
Doença das Coronárias/etiologia , Estilo de Vida , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/psicologia , Adolescente , Adulto , Idoso , Índice de Massa Corporal , Colesterol/sangue , Estudos de Coortes , Feminino , Humanos , Lipoproteínas HDL/sangue , Lipoproteínas LDL/sangue , Masculino , Pessoa de Meia-Idade , Análise de Regressão , Fatores de Risco , Autocuidado , Traumatismos da Medula Espinal/reabilitação , Inquéritos e Questionários , Triglicerídeos/sangue , Adulto Jovem
19.
Disabil Rehabil ; 35(13): 1097-103, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23030594

RESUMO

BACKGROUND: With today's specialized medical care, life expectancy of persons with a spinal cord injury (SCI) has considerably improved. With increasing age and time since injury, many individuals with SCI, however, show a serious inactive lifestyle, associated with deconditioning and secondary health conditions (SHCs) (e.g. pressure sores, urinary and respiratory tract infections, osteoporosis, upper-extremity pain, obesity, diabetes, cardiovascular disease) and resulting in reduced participation and quality of life (QoL). Avoiding this downward spiral, is crucial. OBJECTIVES: To understand possible deconditioning and SHCs in persons aging with a SCI in the context of active lifestyle, fitness, participation and QoL and to examine interventions that enhance active lifestyle, fitness, participation and QoL and help prevent some of the SHCs. METHODS: A multicentre multidisciplinary research program (Active LifestyLe Rehabilitation Interventions in aging Spinal Cord injury, ALLRISC) in the setting of the long-standing Dutch SCI-rehabilitation clinical research network. RESULTS: ALLRISC is a four-study research program addressing inactive lifestyle, deconditioning, and SHCs and their associations in people aging with SCI. The program consists of a cross-sectional study (n = 300) and three randomized clinical trials. All studies share a focus on fitness, active lifestyle, SHCs and deconditioning and outcome measures on these and other (participation, QoL) domains. It is hypothesized that a self-management program, low-intensity wheelchair exercise and hybrid functional electrical stimulation-supported leg and handcycling are effective interventions to enhance active life style and fitness, help to prevent some of the important SHCs in chronic SCI and improve participation and QoL. CONCLUSION: ALLRISC aims to provide evidence-based preventive components of a rehabilitation aftercare system that preserves functioning in aging persons with SCI.


Assuntos
Envelhecimento , Pessoas com Deficiência/psicologia , Estilo de Vida , Traumatismos da Medula Espinal/fisiopatologia , Traumatismos da Medula Espinal/reabilitação , Atividades Cotidianas , Adulto , Estudos Transversais , Exercício Físico , Feminino , Indicadores Básicos de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos , Aptidão Física , Avaliação de Programas e Projetos de Saúde , Qualidade de Vida , Autocuidado , Participação Social/psicologia , Traumatismos da Medula Espinal/psicologia
20.
Disabil Rehabil ; 35(13): 1111-8, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23033846

RESUMO

PURPOSE: To evaluate the effectiveness of a 16-week self-management intervention on physical activity level and self-management skills (self-efficacy, proactive coping and problem solving skills) in persons with chronic SCI. METHOD AND DESIGN: Multicenter randomized controlled trial (RCT). Eighty persons with a SCI for at least 10 years and aged 18 to 65 will randomly be assigned to the intervention (self-management) or the control group (information provision). During the 16-week self-management intervention (one home-visit, five group and five individual sessions) active lifestyle will be stimulated and self-management skills will be taught. Data will be collected at baseline (T0), 16 (T1) and 42 (T2) weeks after baseline. Primary outcome measure is level of daily physical activity (self-report/objectively measured). Secondary outcome measures are self-managements skills, stage of behaviour change and attitude. CONCLUSION: This is the first RCT on self-management in people with chronic spinal cord injury. This trial will provide knowledge on the effects of a self-management intervention on physical active lifestyle in persons with a long-term SCI.


Assuntos
Terapia Comportamental , Autocuidado , Traumatismos da Medula Espinal/terapia , Adaptação Psicológica , Adulto , Idoso , Aconselhamento , Exercício Físico , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Estilo de Vida , Masculino , Pessoa de Meia-Idade , Atividade Motora , Aptidão Física , Desenvolvimento de Programas , Análise de Regressão , Resultado do Tratamento
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