RESUMO
Awards can propel academic careers. They also reflect the culture and values of the scientific community. But do awards incentivize greater transparency, inclusivity, and openness in science? Our cross-disciplinary survey of 222 awards for the "best" journal articles across all 27 SCImago subject areas revealed that journals and learned societies administering such awards generally publish little detail on their procedures and criteria. Award descriptions were brief, rarely including contact details or information on the nominations pool. Nominations of underrepresented groups were not explicitly encouraged, and concepts that align with Open Science were almost absent from the assessment criteria. At the same time, 10% of awards, especially the recently established ones, tended to use article-level impact metrics. USA-affiliated researchers dominated the winner's pool (48%), while researchers from the Global South were uncommon (11%). Sixty-one percent of individual winners were men. Overall, Best Paper awards miss the global calls for greater transparency and equitable access to academic recognition. We provide concrete and implementable recommendations for scientific awards to improve the scientific recognition system and incentives for better scientific practice.
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Distinções e Prêmios , Humanos , Pesquisadores , Masculino , Feminino , Ciência , Editoração/normas , Publicações Periódicas como Assunto/normasRESUMO
AIM: Prediction intervals are a useful measure of uncertainty for meta-analyses that capture the likely effect size of a new (similar) study based on the included studies. In comparison, confidence intervals reflect the uncertainty around the point estimate but provide an incomplete summary of the underlying heterogeneity in the meta-analysis. This study aimed to estimate (i) the proportion of meta-analysis studies that report a prediction interval in sports medicine; and (ii) the proportion of studies with a discrepancy between the reported confidence interval and a calculated prediction interval. METHODS: We screened, at random, 1500 meta-analysis studies published between 2012 and 2022 in highly ranked sports medicine and medical journals. Articles that used a random effect meta-analysis model were included in the study. We randomly selected one meta-analysis from each article to extract data from, which included the number of estimates, the pooled effect, and the confidence and prediction interval. RESULTS: Of the 1500 articles screened, 866 (514 from sports medicine) used a random effect model. The probability of a prediction interval being reported in sports medicine was 1.7% (95% CI = 0.9%, 3.3%). In medicine the probability was 3.9% (95% CI = 2.4%, 6.6%). A prediction interval was able to be calculated for 220 sports medicine studies. For 60% of these studies, there was a discrepancy in study findings between the reported confidence interval and the calculated prediction interval. Prediction intervals were 3.4 times wider than confidence intervals. CONCLUSION: Very few meta-analyses report prediction intervals and hence are prone to missing the impact of between-study heterogeneity on the overall conclusions. The widespread misinterpretation of random effect meta-analyses could mean that potentially harmful treatments, or those lacking a sufficient evidence base, are being used in practice. Authors, reviewers, and editors should be aware of the importance of prediction intervals.
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Esportes , Humanos , Exercício Físico , Probabilidade , Incerteza , Metanálise como AssuntoRESUMO
STUDY DESIGN: Cross-sectional survey. OBJECTIVES: Appropriate and timely lifelong access to healthcare following a spinal cord injury (SCI) is critical, yet unmet healthcare needs in this population are common. Poor experiences with healthcare providers can be a barrier to health-seeking behaviour, and we hypothesised that there would be an association between unmet healthcare needs and care experiences. This study aimed to: (1) describe healthcare provider utilisation in the past year, unmet care needs and satisfaction with healthcare services; (2) explore the association between experiences with healthcare providers and unmet healthcare needs; and (3) explore the association between healthcare provider utilisation and participant characteristics, including unmet healthcare needs. SETTING: Community. METHODS: Analysis of data for 1579 Australians aged ≥ 18, who were ≥ 1-year post-SCI and living in the community. Bayesian penalised regression was used to model six binary outcomes: unmet healthcare needs; the use of general practitioners (GPs), allied health practitioners, rehabilitation specialists; medical specialists; and hospitalisations in the past 12-months. RESULTS: Unmet needs were reported by 17% of participants, with service cost the common deterrent. There was evidence of an effect for provider experiences on unmet healthcare needs, but no evidence that unmet healthcare needs was associated with the use of GPs, allied health practitioners, and rehabilitation or medical specialists. CONCLUSIONS: Unmet healthcare needs were reported in the context of high healthcare use and large proportions of secondary conditions in a cohort with long-term SCI. Improved health access for people with SCI include better primary-secondary care collaboration is needed.
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Acessibilidade aos Serviços de Saúde , Necessidades e Demandas de Serviços de Saúde , Traumatismos da Medula Espinal , Humanos , Traumatismos da Medula Espinal/terapia , Traumatismos da Medula Espinal/epidemiologia , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Masculino , Feminino , Austrália , Estudos Transversais , Pessoa de Meia-Idade , Adulto , Necessidades e Demandas de Serviços de Saúde/estatística & dados numéricos , Pessoal de Saúde/estatística & dados numéricos , Adulto Jovem , Idoso , Adolescente , Satisfação do Paciente/estatística & dados numéricos , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricosRESUMO
BACKGROUND: Occupational heat stress, exacerbated by factors such as climate change and insufficient cooling solutions, endangers the health and productivity of workers, especially in low-resource workplaces. OBJECTIVE: To evaluate the effectiveness of two cooling strategies in reducing physiological strain and productivity of piece-rate workers over a 9-h work shift in a southern Thailand sawmill. METHODS: In a crossover randomized control trial design, 12 (33 ± 7 y; 1.58 ± 0.05 m; 51 ± 9 kg; n = 5 females) medically screened sawmill workers were randomly allocated into three groups comprising an established phase change material vest (VEST), an on-site combination cooling oasis (OASIS) (i.e., hydration, cold towels, fans, water dousing), and no cooling (CON) across 3 consecutive workdays. Physiological strain was measured via core temperature telemetry and heart rate monitoring. Productivity was determined by counting the number of pallets of wood sorted, stacked, and stowed each day. RESULTS: Relative to CON, OASIS lowered core temperature by 0.25°C [95% confidence interval = 0.24, 0.25] and heart rate by 7 bpm [6, 9] bpm, compared to 0.17°C [0.17, 0.18] and 10 [9,12] bpm reductions with VEST. It was inconclusive whether productivity was statistically lower in OASIS compared to CON (mean difference [MD] = 2.5 [-0.2, 5.2]), and was not statistically different between VEST and CON (MD = 1.4 [-1.3, 4.1]). CONCLUSIONS: Both OASIS and VEST were effective in reducing physiological strain compared to no cooling. Their effect on productivity requires further investigation, as even small differences between interventions could lead to meaningful disparities in piece-rate worker earnings over time.
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Estudos Cross-Over , Transtornos de Estresse por Calor , Humanos , Tailândia , Feminino , Adulto , Masculino , Transtornos de Estresse por Calor/prevenção & controle , Frequência Cardíaca/fisiologia , Doenças Profissionais/prevenção & controle , Doenças Profissionais/etiologia , Roupa de Proteção , Eficiência , Temperatura Alta/efeitos adversos , Exposição Ocupacional/prevenção & controle , Exposição Ocupacional/efeitos adversos , Adulto JovemRESUMO
This study investigated the effects of high-intensity resistance training on estimates of the motor neuron persistent inward current (PIC) in older adults. Seventeen participants (68.5 ± 2.8 yr) completed a 2-wk nonexercise control period followed by 6 wk of resistance training. Surface electromyographic signals were collected with two 32-channel electrodes placed over soleus to investigate motor unit discharge rates. Paired motor unit analysis was used to calculate delta frequency (ΔF) as an estimate of PIC amplitudes during 1) triangular-shaped contractions to 20% of maximum torque capacity and 2) trapezoidal- and triangular-shaped contractions to 20% and 40% of maximum torque capacity, respectively, to understand their ability to modulate PICs as contraction intensity increases. Maximal strength and functional capacity tests were also assessed. For the 20% triangular-shaped contractions, ΔF [0.58-0.87 peaks per second (pps); P ≤ 0.015] and peak discharge rates (0.78-0.99 pps; P ≤ 0.005) increased after training, indicating increased PIC amplitude. PIC modulation also improved after training. During the control period, mean ΔF differences between 20% trapezoidal-shaped and 40% triangular-shaped contractions were 0.09-0.18 pps (P = 0.448 and 0.109, respectively), which increased to 0.44 pps (P < 0.001) after training. Also, changes in ΔF showed moderate to very large correlations (r = 0.39-0.82) with changes in peak discharge rates and broad measures of motor function. Our findings indicate that increased motor neuron excitability is a potential mechanism underpinning training-induced improvements in motor neuron discharge rate, strength, and motor function in older adults. This increased excitability is likely mediated by enhanced PIC amplitudes, which are larger at higher contraction intensities.NEW & NOTEWORTHY Resistance training elicited important alterations in soleus intrinsic motor neuronal excitability, likely mediated by enhanced persistent inward current (PIC) amplitude, in older adults. Estimates of PICs increased after the training period, accompanied by an enhanced ability to increase PIC amplitudes at higher contraction intensities. Our data also suggest that changes in PIC contribution to self-sustained discharging may contribute to increases in motor neuron discharge rates, maximal strength, and functional capacity in older adults after resistance training.
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Treinamento Resistido , Humanos , Idoso , Músculo Esquelético/fisiologia , Eletromiografia , Neurônios Motores/fisiologia , Neurônios EferentesRESUMO
NEW FINDINGS: What is the central question of this study? What is the predictive relationship between self-reported scales to quantify perceptions of fatigue during exercise and gold standard measures used to quantify the development of neuromuscular fatigue? What is the main finding and its importance? No scale was determined to be substantively more effective than another. However, the number of ongoing contractions performed was shown to be a better predictor of fatigue in the motor system than any of the subjective scales. ABSTRACT: The purpose of this study was to determine the relationship between transcranial magnetic stimulation (TMS) measures of performance fatigability and commonly used scales that quantify perceptions of fatigue during exercise. Twenty healthy participants (age 23 ± 3 years, 10 female) performed 10 submaximal isometric elbow flexions at 20% maximal voluntary contraction (MVC) for 2 min, separated by 45 s of rest. Biceps brachii muscle electromyography and elbow flexion torque responses to single-pulse TMS were obtained at the end of each contraction to assess central factors of performance fatigability. A rating of perceived exertion (RPE) scale, Omnibus Resistance scale, Likert scale, Rating of Fatigue scale and a visual analogue scale (VAS) were used to assess perceptions of fatigue at the end of each contraction. The RPE (root mean square error (RMSE) = 0.144) and Rating of Fatigue (RMSE = 0.145) scales were the best predictors of decline in MVC torque, whereas the Likert (RMSE= 0.266) and RPE (RMSE= 0.268) scales were the best predictors of electromyographic amplitude. Although the Likert (RMSE = 7.6) and Rating of Fatigue (RMSE = 7.6) scales were the best predictors of voluntary muscle activation of any scale, the number of contractions performed during the protocol was a better predictor (RMSE = 7.3). The ability of the scales to predict TMS measures of performance fatigability were in general similar. Interestingly, the number of contractions performed was a better predictor of TMS measures than the scales themselves.
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Articulação do Cotovelo , Cotovelo , Humanos , Feminino , Adulto Jovem , Adulto , Cotovelo/fisiologia , Fadiga Muscular/fisiologia , Contração Isométrica/fisiologia , Músculo Esquelético/fisiologia , Eletromiografia/métodos , Contração Muscular/fisiologia , Estimulação Elétrica/métodosRESUMO
OBJECTIVE: To explore the association between sociodemographic, health, functional independence, and environmental variables with engagement in paid work for people with spinal cord injury (SCI). DESIGN: Self-reported, cross-sectional Australian data from a large international SCI survey. SETTING: Community-based. PARTICIPANTS: 1189 working-age people with SCI (18-67 years) or aged >67 years and engaged in paid employment. Respondents were community based and at least 1 year after injury. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Employment and work integration variables. Bayesian penalized regression was used to determine associations between 23 predictor variables and engagement in paid work. RESULTS: Most participants (87%) were employed pre-injury, with 39% in paid employment at the time of the survey. Participants who attained a master's/doctoral degree (odds ratio [OR]=3.01; 95% credible interval [CrI], 1.63, 5.44) and those married (OR=1.68; 95% CrI, 1.13, 2.49) were more likely to be engaged in paid work. Women (OR=0.55; 95% CrI, 0.37, 0.81), people receiving a disability pension (OR=0.17; 95% CrI, 0.13, 0.24), and older participants (OR=0.75; 95% CrI, 0.63, 0.90) were less likely to be in paid work. Working participants identified hardships including problems completing their work (60%) and accessing the workplace (32%), as well as unmet needs relating to assistive devices required for completing their work (50%). CONCLUSIONS: Findings from the current study can assist in directing resources to subgroups within the SCI population who need greater assistance or intervention related to employment outcomes, including through vocational rehabilitation services/programs. Unmet needs and workplace issues expressed by employed individuals identify gaps in work integration and satisfaction that could affect employment sustainability that need to be addressed.
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Traumatismos da Medula Espinal , Humanos , Feminino , Estudos Transversais , Teorema de Bayes , Austrália , Traumatismos da Medula Espinal/reabilitação , EmpregoRESUMO
PURPOSE: To compare physiological responses to submaximal cycling and sprint cycling performance in women using oral contraceptives (WomenOC) and naturally cycling women (WomenNC) and to determine whether N-acetylcysteine (NAC) supplementation mediates these responses. METHODS: Twenty recreationally trained women completed five exercise trials (i.e., an incremental cycling test, a familiarisation trial, a baseline performance trial and two double-blind crossover intervention trials). During the intervention trials participants supplemented with NAC or a placebo 1 h before exercise. Cardiopulmonary parameters and blood biochemistry were assessed during 40 min of fixed-intensity cycling at 105% of gas-exchange threshold and after 1-km cycling time-trial. RESULTS: WomenOC had higher ventilation (ß [95% CI] = 0.07 L·min-1 [0.01, 0.14]), malondialdehydes (ß = 12.00 mmol·L-1 [6.82, 17.17]) and C-reactive protein (1.53 mg·L-1 [0.76, 2.30]), whereas glutathione peroxidase was lower (ß = 22.62 mU·mL-1 [- 41.32, - 3.91]) compared to WomenNC during fixed-intensity cycling. Plasma thiols were higher at all timepoints after NAC ingestion compared to placebo, irrespective of group (all p < 0.001; d = 1.45 to 2.34). For WomenNC but not WomenOC, the exercise-induced increase in malondialdehyde observed in the placebo trial was blunted after NAC ingestion, with lower values at 40 min (p = 0.018; d = 0.73). NAC did not affect cycling time-trial performance. CONCLUSIONS: Blood biomarkers relating to oxidative stress and inflammation are elevated in WomenOC during exercise. There may be an increased strain on the endogenous antioxidant system during exercise, since NAC supplementation in WomenOC did not dampen the exercise-induced increase in malondialdehyde. Future investigations should explore the impact of elevated oxidative stress on exercise adaptations or recovery from exercise in WomenOC.
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Acetilcisteína , Estresse Oxidativo , Acetilcisteína/farmacologia , Biomarcadores , Anticoncepção , Anticoncepcionais Orais/farmacologia , Estudos Cross-Over , Método Duplo-Cego , Feminino , Humanos , MalondialdeídoRESUMO
BACKGROUND: This exploratory study aimed to: (i) examine the relationship between health service use and quality of life, psychological wellbeing, global function and participation after discharge from brain injury inpatient rehabilitation, and (ii) determine the influence of personal factors, unmet need for services and service obstacles on the relationship between service use and these outcomes. METHODS: Using a prospective cohort design, 41 adults with acquired brain injury (median age = 46 years; 71% male; 61% severe traumatic injury) were followed for 6-months after discharge from specialist brain injury inpatient rehabilitation. Service use was continuously recorded and obtained through data linkage methods, focusing on the use of: outpatient medical services, outpatient nursing, outpatient allied health; medical acute services; incidents of re-hospitalization; and transitional rehabilitation service use. Outcome questionnaire measures were completed via telephone, at 6-months after discharge, and included: the EuroQol-5D; Depression Anxiety and Stress Scale, Mayo-Portland Adaptability Inventory and Sydney Psychosocial Reintegration Scale. Data were analyzed in a heterogeneous treatment effects framework, using Bayesian Additive Regression Trees. RESULTS: There was weak evidence that transitional rehabilitation service use was associated with better psychological wellbeing scores. The posterior probability of lower depression, anxiety and stress scores was .87, .81 and .86, respectively (average treatment effect). There was also weak evidence that re-hospitalization was associated with worse independent living skills scores. The posterior probability of worse scores was .87. However, most re-hospitalizations were due to unavoidable medical complications. We did not find that place of residence at discharge, marital status, unmet need, or service obstacles affected the relationship between service use and the studied outcomes. CONCLUSIONS: This study may highlight the importance of participation in transitional rehabilitation, in the 6-months after discharge from brain injury rehabilitation. Replication in a larger sample size is required to confirm these findings.
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Lesões Encefálicas , Qualidade de Vida , Adulto , Teorema de Bayes , Lesões Encefálicas/reabilitação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Aceitação pelo Paciente de Cuidados de Saúde , Estudos ProspectivosRESUMO
STUDY DESIGN: Longitudinal cohort study. OBJECTIVES: To investigate the longitudinal effects of time since injury and age at injury on outcomes of quality of life, physical function, secondary conditions and participation, in people with traumatic spinal cord injury (SCI). SETTING: Community resident people with spinal cord injury in Queensland, Australia. METHODS: A baseline sample of 270 people with SCI was recruited. Telephone surveys on measures of quality of life (WHOQOL-Bref), secondary conditions (Secondary Conditions Surveillance Instrument, subset), physical functioning (Functional Independence Measure motor subscale) and participation (Community Integration Measure) were conducted each year between 2004 and 2008, and again in 2018. Random-effect within-between models were used to determine the effect of time since injury and age at injury on each outcome variable. Inverse probability-of-censoring weights were used to correct for selection bias. RESULTS: There was an effect of time since injury on secondary conditions, with a one-year change associated with 9% higher odds of having worse Secondary Conditions Surveillance Instrument scores (odds ratio = 1.09, 95% confidence interval = 1.02, 1.17; p = 0.006). We did not find any evidence of a time since injury effect on quality of life, physical function, or participation. Similarly, we did not find any evidence of an age at injury effect on any outcome variable. CONCLUSIONS: Secondary conditions may increase with longer time since injury among people with SCI, suggesting appropriate formal and informal supports are required to minimise the impact of these emerging health problems as individuals age.
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Traumatismos da Medula Espinal , Humanos , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/epidemiologia , Traumatismos da Medula Espinal/terapia , Qualidade de Vida , Queensland/epidemiologia , Estudos Longitudinais , Austrália/epidemiologiaRESUMO
PURPOSE: This study investigated the effect of 5 days of heat acclimation training on neuromuscular function, intestinal damage, and 20 km cycling (20TT) performance in the heat. METHODS: Eight recreationally trained males completed two 5-day training blocks (cycling 60 min day-1 at 50% peak power output) in a counter-balanced, cross-over design, with a 20TT completed before and after each block. Training was conducted in hot (HA: 34.9 ± 0.7 °C, 53 ± 4% relative humidity) or temperate (CON: 22.2 ± 2.6 °C, 65 ± 8% relative humidity) environment. All 20TTs were completed in the heat (35.1 ± 0.5 °C, 51 ± 4% relative humidity). Neuromuscular assessment of knee extensors (5 × 5 s maximum voluntary contraction; MVC) was completed before and after each 20TT and on the first and last days of each training block. RESULTS: MVC torque was statistically higher after 5 days of HA training compared to CON (mean difference = 14 N m [95% confidence interval; 6, 23]; p < 0.001; d = 0.77). However, 20TT performance after 5 days of HA training was not statistically different to CON, with a between-conditions mean difference in the completion time of 68 s [95% confidence interval; - 9, 145] (p = 0.076; d = 0.35). CONCLUSION: Short-term heat acclimation training may increase knee extensor strength without changes in central fatigue or intestinal damage. Nevertheless, it is insufficient to improve 20 km self-paced cycling performance in the heat compared to workload-matched training in a temperate environment. These data suggest that recreationally trained athletes gain no worthwhile performance advantage from short-term heat-training before competing in the heat.
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Regulação da Temperatura Corporal/fisiologia , Exercício Físico/fisiologia , Temperatura Alta , Joelho/fisiologia , Adulto , Atletas , Ciclismo/fisiologia , HumanosRESUMO
OBJECTIVE: This study examined the effects of health and rehabilitation service use, unmet need for services, and service obstacles on health-related quality of life (HR QoL) and psychological well-being after discharge from spinal cord injury (SCI) rehabilitation. DESIGN: Prospective cohort study, with participants followed up at 6 and/or 12 months after discharge from SCI inpatient rehabilitation. SETTING: Community setting. PARTICIPANTS: People with SCI (N=55; mean age 51y; 76.4% men; 61.8% traumatic injury; mean length of stay 137d). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Service Usage Scale, Service Obstacles Scale, the EuroQol-5D, and the Depression Anxiety and Stress Scale short form. Eight predictors of outcome were considered: service use (ie, use of general practitioner, medical specialist, nursing, and allied health, and rehospitalization), unmet need, and service obstacles (ie, finances and transport). Possibly important predictors of each outcome were identified via penalized regression, and a final model was fit using Bayesian hierarchical regression with a Gaussian or zero-inflated Poisson response distribution. RESULTS: Financial obstacles were associated with a poorer HR QoL (ß [95% credible interval]= -0.095 [-0.166 to -0.027]) and higher anxiety (odds ratio, OR [95% credible interval]=1.63 [1.16-2.23]). Rehospitalization was associated with a lower EuroQol visual analog scale (ß= -11.2 [-19.7 to -2.5]) and, interestingly, lower anxiety (OR=1.63 [1.16-2.23]). Use of allied health was associated with higher anxiety (OR=2.48 [1.42-4.44]). CONCLUSION: The varying degrees of financial hardship experienced after injury with complex rehabilitation needs requires investigation, as does the interactive effects of service use, unmet need, and service obstacles on outcomes like QoL and psychological well-being.
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Continuidade da Assistência ao Paciente/organização & administração , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Alta do Paciente , Qualidade de Vida , Centros de Reabilitação , Traumatismos da Medula Espinal/reabilitação , Adaptação Fisiológica , Adaptação Psicológica , Adulto , Fatores Etários , Idoso , Teorema de Bayes , Estudos de Coortes , Feminino , Humanos , Escala de Gravidade do Ferimento , Pacientes Internados/estatística & dados numéricos , Tempo de Internação , Masculino , Saúde Mental , Pessoa de Meia-Idade , Avaliação das Necessidades , Avaliação de Resultados em Cuidados de Saúde , Estudos Prospectivos , Queensland , Medição de Risco , Fatores Sexuais , Traumatismos da Medula Espinal/diagnósticoRESUMO
OBJECTIVE: This study aimed to determine the influence of participation in a designated acquired brain injury (ABI) transitional rehabilitation service (ABI TRS) on outcome, in the context of a historical comparison group (HIST). Design: A cohort study, with retrospective comparison. Participants: 187 persons with ABI. Measures: The Depression, Anxiety and Stress Scale (DASS-21), Mayo-Portland Adaptability Index (MPAI-4) and Sydney Psychosocial and Reintegration Scale (SPRS) were completed at discharge and 3 months after discharge. Participation in the ABI TRS involved interdisciplinary rehabilitation, 2-4 times per week, for 3 months after hospital discharge. Results: There was evidence that at 3 months, participants with ABI TRS showed stabilized psychological wellbeing, and improvements in MPAI-4 ability and participation scores; in addition to improvements in SPRS occupational activity and living skills scores. Conclusion: A designated ABI TRS may improve the transition from hospital to home, and could form an important part of the brain injury rehabilitation continuum, between the inpatient and community setting.
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Lesões Encefálicas , Ansiedade , Estudos de Coortes , Humanos , Alta do Paciente , Estudos RetrospectivosRESUMO
Muscle damage and soreness associated with increased exercise training loads or unaccustomed activity can be debilitating and impact the quality of subsequent activity/performance. Current techniques to assess muscle soreness are either time consuming, invasive or subjective. Infrared thermography has been identified as a quick, non-invasive, portable and athlete friendly method of assessing skin temperature. This study assessed the capability of thermal infrared imaging to detect skin temperature changes that may accompany the inflammatory response associated with delayed onset muscular soreness (DOMS). Eight recreationally trained participants (age 25 ± 3 years, mass 74.9 ± 13.6 kg, training minutes 296 ± 175 min·wk-1) completed 6 sets of 25 maximal concentric/eccentric contractions of the right knee flexors/extensors on a dynamometer to induce muscle damage and DOMS. The left knee extensors acted as a non-exercise control. Neuromuscular performance, subjective pain assessment and infrared thermography were undertaken at baseline, 24 and 48 hr post the DOMS-inducing exercise protocol. Data were analysed using Bayesian hierarchical regression and Cohen's d was also calculated. Maximal voluntary contraction torque was statistically lower at 24 hr (d = -0.70) and 48 hr (d = -0.52) compared to baseline, after the DOMS-inducing exercise protocol. These neuromuscular impairments coincided with statistically higher ratings of muscle soreness at 24 hr (d = 0.96) and 48 hr (d = 0.48). After adjusting for ambient temperature, anterior thigh skin temperature was statistically elevated at 24 hr, but not 48 hr, compared with baseline, in both the exercised and non-exercised leg. Thigh temperature was not different statistically between legs at these time points. Infrared imaging was able to detect elevations in skin temperature, at 24 hrs after the DOMS inducing exercise protocol, in both the exercised and non-exercised thigh. Elevations in the skin temperature of both thighs, potentially identifies a systemic inflammatory response occurring at 24 hr after the DOMS-inducing exercise protocol.
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Exercício Físico/fisiologia , Joelho/fisiologia , Mialgia/fisiopatologia , Temperatura Cutânea , Termografia/métodos , Adulto , Afeto , Potencial Evocado Motor , Exercício Físico/psicologia , Humanos , Masculino , Contração Muscular , Mialgia/psicologia , Percepção , Temperatura , Coxa da Perna/fisiologia , Fatores de Tempo , Torque , Adulto JovemRESUMO
INTRODUCTION: The premise of this study was to investigate the effect of acute glutamine supplementation on 20 km time trial cycling performance in the heat, neuromuscular function, inflammation and endotoxemia. METHODS: Twelve cyclists completed two, 20-km time trials (20TT) in 35 °C (50% relative humidity). Participants ingested either glutamine (GLUT; 0.9 g kg-1 fat-free mass) or a placebo (CON) 60 min before each 20TT. Physiological and perceptual measures were recorded during each 20TT, and neuromuscular function assessed pre- and post-exercise. Venous blood was analysed for endotoxins, markers of gut damage (inflammatory fatty acid binding protein; I-FABP) and inflammatory cytokines (interleukin-6, IL-6; tumour necrosis factor-alpha, TNF-α). Data were analysed using linear mixed models in a Bayesian framework. RESULTS: 20TT in the heat increased I-FABP and elevated inflammatory cytokines (IL-6 and TNF-α) compared to pre-exercise values but did not result in endotoxemia. Completion time was not statistically different between conditions (mean difference [95% credible interval] = 11 s [- 23, 44]). Relative to CON, GLUT did not alter any physiological or perceptual measures during the 20TT. CONCLUSION: Glutamine supplementation does not improve 20TT performance in the heat or preserve neuromuscular function when compared to a placebo. These findings suggest that glutamine is not an ergogenic aid or prophylactic intervention for heat-induced gut damage during short-duration self-paced exercise in hot environments.
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Ciclismo/fisiologia , Exercício Físico/fisiologia , Glutamina/administração & dosagem , Adulto , Biomarcadores/metabolismo , Temperatura Corporal/fisiologia , Citocinas/metabolismo , Suplementos Nutricionais , Endotoxinas/metabolismo , Temperatura Alta , Humanos , Inflamação/metabolismo , Masculino , Fragmentos de Peptídeos/metabolismo , Desempenho Físico FuncionalRESUMO
This investigation aimed to quantify metabolic rate when wearing an explosive ordnance disposal (EOD) ensemble (~33kg) during standing and locomotion; and determine whether the Pandolf load carriage equation accurately predicts metabolic rate when wearing an EOD ensemble during standing and locomotion. Ten males completed 8 trials with metabolic rate measured through indirect calorimetry. Walking in EOD at 2.5, 4.0 and 5.5km·h-1 was significantly (p < 0.05) greater than matched trials without the EOD ensemble by 49% (127W), 65% (213W) and 78% (345W), respectively. Mean bias (95% limits of agreement) between predicted and measured metabolism during standing, 2.5, 4 and 5.5km·h-1 were 47W (19 to 75W); -111W (-172 to -49W); -122W (-189 to -54W) and -158W (-245 to -72W), respectively. The Pandolf equation significantly underestimated measured metabolic rate during locomotion. These findings have practical implications for EOD technicians during training and operation and should be considered when developing maximum workload duration models and work-rest schedules. Practitioner Summary: Using a rigorous methodological design we quantified metabolic rate of wearing EOD clothing during locomotion. For the first time we demonstrated that metabolic rate when wearing this ensemble is greater than that predicted by the Pandolf equation. These original findings have significant implications for EOD training and operation.
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Metabolismo Energético/fisiologia , Locomoção/fisiologia , Consumo de Oxigênio/fisiologia , Postura/fisiologia , Roupa de Proteção , Adulto , Substâncias Explosivas , Humanos , Masculino , Equivalente Metabólico , Suporte de Carga , Adulto JovemAssuntos
Especialidade de Fisioterapia/estatística & dados numéricos , Medicina Esportiva/estatística & dados numéricos , Reconstrução do Ligamento Cruzado Anterior/reabilitação , Reconstrução do Ligamento Cruzado Anterior/estatística & dados numéricos , Traumatismos em Atletas , Análise de Dados , Exercício Físico/fisiologia , Feminino , Humanos , Relações Interprofissionais , Masculino , Distúrbios Menstruais/sangue , Análise de Componente Principal/métodos , Estatística como Assunto/educação , Estatística como Assunto/métodos , Deficiência de Vitamina DRESUMO
PURPOSE: The present study aimed to quantify the perceived needs and adequacy of realised access to post-acute services in a sample of people with acquired brain injury in the first 6-months after discharge from inpatient rehabilitation. A secondary focus was the influence of access to funding and specialist transitional rehabilitation on unmet needs. MATERIALS AND METHODS: Participants were 51 adults with a median age of 50 (IQR 35-57) recruited from an inpatient rehabilitation unit in an Australian tertiary hospital. The sample was those who had an acquired brain injury, including 23 who sustained a traumatic injury and 28 who sustained a non-traumatic injury. Measures were collected via telephone at 3- and 6-months, in a prospective observational cohort design using the Needs and Provisions Complexity Scale. A series of logistic regression models were used to determine the effects of participation in a transitional rehabilitation program and funding pathway on adequacy and unmet needs. RESULTS: Unmet needs for rehabilitation were most commonly reported (60%), followed by unmet needs in relation to health care (40%), social care (35%), personal care (32%) and environment-related (14%). Participants who attended transitional rehabilitation were more likely to indicate unmet health care needs (OR = 6.40, 95% CI = 1.40-29.24, p = 0.02). CONCLUSIONS: The study highlights the need to look beyond functional impairment when conceptualising appropriate access. Additionally, the present research highlighted the need for greater work into an expectation of services.IMPLICATIONS FOR REHABILITATIONThe majority of people with an acquired brain injury report unmet needs at 6 months post discharge.Present findings support the utility of patient reported measures when considering treatment evaluation with people with ABI, where assessing the personal appraisal of individuals needs may prove to be a key indicator to facilitate optimal service access.There are specific services that needed and not provided including psychological, speech pathology, family carer needs and vocational rehabilitation, and therefore are a key target for ensuring appropriate support is provided.
Assuntos
Lesões Encefálicas , Alta do Paciente , Adulto , Humanos , Assistência ao Convalescente , Austrália , Lesões Encefálicas/reabilitação , Reabilitação VocacionalRESUMO
Research Integrity Advisors are used in Australia to provide impartial guidance to researchers who have questions about any aspect of responsible research practice. Every Australian institution conducting research must provide access to trained advisors. This national policy could be an important part of creating a safe environment for discussing research integrity issues and thus resolving issues. We conducted the first formal study of advisors, using a census of every Australian advisor to discover their workload and attitudes to their role. We estimated there are 739 advisors nationally. We received responses to our questions from 192. Most advisors had a very light workload, with an median of just 0.5 days per month. Thirteen percent of advisors had not received any training, and some advisors only discovered they were an advisor after our approach. Most advisors were positive about their ability to help colleagues deal with integrity issues. The main desired changes were for greater advertising of their role and a desire to promote good practice rather than just supporting potential issues. Advisors might be a useful policy for supporting research integrity, but some advisors need better institutional support in terms of training and raising awareness.
RESUMO
Objectives: To synthesise the literature on clinical decision support (CDS) systems for chronic obstructive pulmonary disease (COPD). We aimed to (1) describe existing COPD CDS systems that have been designed, developed or are being used in practice, (2) describe the impact of COPD CDS systems on outcomes and (3) identify barriers and facilitators to implementation of COPD CDS systems. Methods: Five databases were searched to identify relevant studies. All studies in English that described clinician-facing COPD CDS systems designed for, or implemented in, hospitals and hospital-in-the-home settings were included. A qualitative narrative synthesis was undertaken, guided by the RE-AIM framework (Reach, Effectiveness, Adoption, Implementation and Maintenance). Results: Twelve studies reporting the use of CDS in hospital (n = 7) and hospital-in-the-home (n = 5) settings were included. Implementation efforts to reach target users were scantly reported, and low-to-medium adoption rates were observed. The reported effectiveness of the CDS systems was mixed. Only one study reported facilitators to the implementation of CDS systems, none reported on barriers to the implementation of CDS systems, and none reported any information on successful strategies to maintain implementation of CDS systems. Conclusion: The use of CDS systems in the management of patients with COPD in hospital-related settings is an important emerging field of research. Evidence suggests that the field has largely focused on systems targeted at physicians, often with incomplete descriptions and limited evaluations. Many opportunities to optimise and evaluate the implementation and use of COPD CDS systems in hospital settings remain, including robust evaluation of their impact on patient, clinician and health service outcomes.