Publications by authors named "Valent L"

Background: General mental health inpatient units hold a valuable place in the stepped system of care, and for identification and treatment of people with eating disorders (EDs) or disordered eating behaviours (DEBs). This study aimed to pragmatically evaluate an evidence-informed screening and care pathway, alongside a staff education program, implemented to improve identification and treatment access for consumers with EDs and DEBs, with co-occurring psychiatric conditions, on a general mental health ward.

Methods: A mixed methodology design was mapped to the RE-AIM implementation framework.

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Article Synopsis
  • The study aimed to assess handbike setups and issues faced by recreational handcyclists training for a mountain time trial event called HandbikeBattle.
  • Out of 150 participants, most reported comfort and stability while using their handbikes, with 80% feeling their pedal position was optimal, despite some expressing a desire for improvement in their riding settings.
  • The findings highlight a significant variation in handbike configurations and suggest a need for evidence-based guidelines for better handbike fitting to enhance safety and performance.
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Illness cognitions (IC) influence how a patient adapts to a chronic disease. The aim was (1) to determine if training for a handcycling mountain time trial (HandbikeBattle) improves IC and (2) to identify factors associated with IC change scores. Persons with a chronic disability (N = 220; including N = 151 with spinal cord disorder) trained 5 months and participated in the time trial.

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Purpose: To investigate: (1) changes in body satisfaction during five months of handcycle training and one year after the training period; (2) whether longitudinal changes are dependent on sex, waist circumference and severity of the physical impairment; (3) associations between changes in physical capacity or body composition, and body satisfaction.

Materials And Methods: Individuals ( = 143) with health conditions such as spinal cord injury filled out the Adult Body Satisfaction Questionnaire: at the start of the training (T1), directly after the training period (T2); and four months (T3) and one year after the training period (T4). At T1 and T2, physical capacity was determined with an upper-body graded exercise test, and waist circumference was measured.

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Objectives: The aims of the study were to evaluate the external and internal work load of trained handcyclists during a mountain time trial, to compare the results with a world-class handcyclist, and to identify time trial performance determinants.

Design: Ten trained and one world-class handcyclists performed a graded exercise test to determine power output and heart rate at the (first and second) ventilatory thresholds and exhaustion. Power output and heart rate were continuously measured during the race.

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Study Design: Longitudinal observational study.

Objectives: During the five-month free-living training period for the HandbikeBattle event several participants dropped out. The aim of this study was to clarify the numbers and reasons for drop out, and to characterize the differences between study participants who did (dropouts) and did not (competitors) drop out during the training period for the HandbikeBattle event.

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Objective: The aims of this study were (1) to compare physical capacity at 1-yr follow-up with physical capacity before and after the training period for the HandbikeBattle event and (2) to identify determinants of the course of physical capacity during follow-up.

Design: This was a prospective observational study. Former rehabilitation patients (N = 33) with health conditions such as spinal cord injury or amputation were included.

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Purpose: (1) to analyze training characteristics of recreationally active wheelchair users during handcycle training, and (2) to examine the associations between training load and change in physical capacity.

Methods: Former rehabilitation patients ( = 60) with health conditions such as spinal cord injury or amputation were included. Participants trained for five months.

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Aim: In this narrative review the potential and importance of handcycling are evaluated. Four conceptual models form the framework for this review; (1) the International Classification of Functioning, Disability and Health; (2) the Stress-Strain-Capacity model; (3) the Human-Activity-Assistive Technology model; and (4) the power balance model for cyclic exercise.

Methods: Based on international handcycle experience in (scientific) research and practice, evidence-based benefits of handcycling and optimization of handcycle settings are presented and discussed for rehabilitation, daily life and recreational sports.

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Objectives: To investigate sports participation among individuals in the HandbikeBattle project 1.5-5.5 years after the event, the barriers and facilitators to sport participation and benefits of participating in the event.

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Objective: To investigate (1) changes in life satisfaction and mental health during 5 months of training for the HandbikeBattle and 4 months of follow-up; (2) associations between changes in handcycling cardiorespiratory fitness and changes in life satisfaction and mental health during the training period.

Design: This is a multicenter prospective cohort study with the following measurements: the start of the training (T1), after the 5-month training period, before the event (T2), and after 4 months of follow-up (T3). At T1, T2, and T3, questionnaires were filled out.

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Purpose: To examine the effects of stage duration on power output (PO), oxygen uptake (VO), and heart rate (HR) at peak level and ventilatory thresholds during synchronous arm crank ergometry.

Methods: Nineteen healthy participants completed a ramp, 1-min stepwise, and 3-min stepwise graded arm crank exercise test. PO, VO and HR at the first and second ventilatory threshold (VT1, VT2) and peak level were compared among the protocols: a repeated measures analysis of variance was performed to test for systematic differences, while intraclass correlation coefficients (ICC) and Bland-Altman plots were calculated to determine relative and absolute agreement.

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Purpose: To (1) investigate the association between sprint power and aerobic power output (POpeak) during a graded peak exercise test (GXT); and (2) validate the prediction models of POpeak based on sprint power and personal and lesion characteristics.

Materials And Methods: Wheelchair users with tetraplegia ( = 35) and paraplegia ( = 58) performed a 30 s-Wingate test and GXT on an asynchronous arm-crank ergometer. Data were split into samples to develop and validate the model.

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Study Design: Cross-sectional study.

Objectives: To describe experienced sitting-related health and stability problems among persons with paraplegia (PP) or tetraplegia (TP) and to investigate associations with personal, lesion and wheelchair characteristics as well as satisfaction with sitting posture.

Setting: Dutch community.

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To gain insight into determinants of physical activity in wheelchair users with spinal cord injury or lower limb amputation, from the perspective of both wheelchair users and rehabilitation professionals. Seven focus groups were conducted: five with wheelchair users ( = 25) and two with rehabilitation professionals ( = 11). The transcripts were analysed using a sequential coding strategy, in which the reported determinants of physical activity were categorized using the Physical Activity for people with a Disability (PAD) model.

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Study Design: Cross-sectional.

Objectives: Individualized training regimes are often based on ventilatory thresholds (VTs). The objectives were to study: (1) whether VTs during arm ergometry could be determined in individuals with spinal cord injury (SCI), (2) the intrarater and interrater reliability of VT determination.

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To develop and validate predictive models for peak power output to provide guidelines for individualized handcycling graded exercise test protocols for people with spinal cord injury (SCI); and to define reference values. Power output was measured in 128 handcyclists with SCI during a synchronous handcycling exercise test. Eighty percent of the data was used to develop four linear regression models: two theoretical and two statistical models with peak power output (in W and W/kg) as dependent variable.

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Study Design: Single-group pre-test post-test study.

Objectives: Examine the change in (1) fitness and body composition due to self-guided training in preparation for the HandbikeBattle in people with spinal cord injury (SCI); and (2) whether these possible body composition changes are associated with changes in fitness.

Setting: Handcycling teams of Dutch rehabilitation centers training for the HandbikeBattle, a handcycling race on an Austrian mountain.

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Objective: To establish the relationship between internal and external handcycling training load for monitoring training in people with paraplegia.

Design: Observational study.

Subjects: Ten people with paraplegia.

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Purpose: Recognizing the encouraging effect of challenging events, the HandbikeBattle (HBB) was created to promote exercise among wheelchair users. The purpose of this study was to reveal the effects on physical fitness and health outcomes of four-month handbike training under free-living conditions in preparation for the event.

Methods: In this prospective cohort study, 59 relatively inexperienced handyclists participated in the HBB of 2013 or 2014.

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Objective: To assess, for people with subacute spinal cord injury, if rehabilitation that is reinforced with the addition of a behavioral intervention to promote physical activity leads to a better health, participation and quality of life.

Design: Randomized controlled trial.

Setting: Rehabilitation centers.

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Purpose: To determine the relationship between outcomes of the shuttle wheel test (SWT) and peak oxygen uptake (VOpeak) during that test and whether SWT and VOpeak can discriminate between different skill levels of wheelchair tennis players.

Methods: Fifteen wheelchair tennis players performed an SWT on a tennis court while VO was measured continuously. Outcome measures were VOpeak and achieved stage.

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Questions: For people with subacute spinal cord injury, does rehabilitation that is reinforced with the addition of a behavioural intervention to promote physical activity lead to a more active lifestyle than rehabilitation alone?

Design: Randomised, controlled trial with concealed allocation, intention-to-treat analysis, and blinded assessors.

Participants: Forty-five adults with subacute spinal cord injury who were undergoing inpatient rehabilitation and were dependent on a manual wheelchair. The spinal cord injuries were characterised as: tetraplegia 33%; motor complete 62%; mean time since injury 150 days (SD 74).

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Background: Since physical activity and exercise levels are known to be generally low in persons with spinal cord injury (SCI), there seems to be a need for intervention. Exercise self-efficacy (ESE), the confidence persons have in their ability to be physically active and exercise, is an important and modifiable predictor of physical behavior. The goal of this study was to 1) describe ESE in persons with subacute SCI, 2) to assess ESE in subgroups based on demographic and lesion characteristics, and 3) to explore the relation between ESE and physical behavior and physical capacity.

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