ESTIMATING THE STOCK OF GLASS EELS IN AN ESTUARY BY MARK-RECAPTURE EXPERIMENTS USING VITAL DYES

Glass eels (Anguilla anguilla) arriving after the fishing season in the Vilaine estuary (France) were caught by boat and at a trapping ladder located at a blocking dam upstream in the estuary. They were marked with Bismarck brown, rhodamine B or neutral red, and released into the estuary. The effect of marking on behaviour, mortality and recapture differed according to the dye and concentration used. The glass eels also differed in response to marking according to their origin. Estuarine glass eels were clearly desynchronized in their selective tidal stream transport and left the release area after a few tidal cycles. Trapped glass eels were less sensitive to marking. They remained in the release area and were recaptured in larger number both in the trapping ladder and in the estuary. These results supported a model of two behavioral fractions in the estuary: flow-carried migrants and active glass eels with stronger rheotactic behaviour. The proportion of active glass eels in the estuary shifted from none for the two weeks after the fishery closure, to 10% value of the total stock. At the trapping ladder, the migration ended in June each year, while a large stock was still present in the estuary. These observations favour the interpretation of a short duration of the active phase at this site followed by the transition towards a more benthic behavior. The daily efficiency of the trapping ladder was calculated as 4% of the active stock from both stock estimations and average recapture rate. This value was consistent with the low annual efficiency of the trapping ladder, calculated as 30% of the estuarine stock of glass eels that arrived after the fishing season

The impact of prior physical conditioning in initial recruit training success: A systematic review

Aim: To determine whether recruits who underwent a physical conditioning program prior to initial tactical training had increased rates of success.Design: Systematic ReviewMethod: A systematic search, following the PRISMA protocol and registered in the Open Science Framework, was conducted to identify relevant studies. Keywords, derived from three themes (physical conditioning, tactical, and recruits), were employed in the search of database CINAHL, ProQuest, PubMed, Scopus, SportDiscus, and Web of Science. Studies were screened against inclusion/exclusion criteria with data extracted and analyzed. The Joanna Briggs Institute critical appraisal tools were used to assess methodological quality of included studies by two authors independently with a Kappa analysis to determine inter-rater agreement.Results: Of 14,411 identified articles, 13 studies informed the review. The mean quality of studies was considered ‘good’ with a Kappa of 0.81 between raters. Seven studies identified that an increase in physical fitness, through use of preconditioning programs, resulted in lower rates of injury. Three studies attributed increased basic training pass rates to physical conditioning programs. However, three studies failed to find a change in attrition rates following the programs.Conclusion: The volume of evidence suggests that programs aimed at increasing muscular conditioning and aerobic endurance prior to tactical training would result in fewer injuries and increased pass rates although reductions in absolute attrition may not change.Key Practice Points:• Recruits are less likely to be injured if they are fitter and / or have completed additional training prior to completing training for a tactical occupation

Ready student one: Simulation-based education, virtual reality, and the perception of stress

Aim: To investigate differences in the physiological perception of physiotherapy student stress undergoing two types of simulated environments.Design: Quasi-experimentalMethods: Students enrolled in a Doctor of Physiotherapy program were subjected to two stressors: a neurological patient simulation (SIM) and a free-roaming virtual reality (VR) immersive gaming scenario. Physiological parameters including respiratory rate, heart rate, skin temperature, salivary cortisol, and α- amylase were collected prior to, immediately post, and 15, 30, and 60 minutes after each scenario. NASA- task load index (TXL) assessed participants’ perceptions of stress prior to, and at the end of, each scenario. Repeated measures linear mixed model analysed the impact of sampling time, stressor, and their interaction on the physiological parameters and NASA-TXL.Results: The VR experience elicited a marked increase in cortisol concentration (1.7nmol/L SE 0.8, p=0.045) from baseline, but not α-amylase, levels immediately after the task. The SIM experience did not influence the concentration of salivary stress markers, although α-amylase concentrations were higher in samples obtained pre-SIM compared to pre-VR samples. NASA-TXL results indicated that students perceived themselves as performing worst and being more stressed, frustrated, and insecure prior to, and after, the SIM compared to the VR task.Conclusion: The SIM scenario had a greater anticipatory perceived stress while the VR immersive gaming experience highlighted greater post-event physiological response to stress

Internal derangement of the knee in physically demanding occupations: A rapid review

Aim: To identify and review studies reporting on occupational risk factors for the occurrence of internal derangement of the knee (IDK) in physically demanding occupations.Design: Systematic review of the literature.Method: This review was guided by the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. A comprehensive search of seven databases was performed using terms derived from three concepts: ‘risk’, ‘paid occupations’, and ‘IDK’.Results: One article met the eligibility criteria. Findings revealed that male Turkish military personnel with IDK that was secondary to anterior cruciate ligament (ACL) ruptures, managed without reconstruction, and who continued their regular military duties following ACL rupture, had a high prevalence of additional intra- articular lesions. A moderate positive correlation was found between the time from the initial ACL rupture and the presence of at least one additional intra-articular lesion (rs = 0.574; p = 0.0001). Additionally, individuals aged 30 years and older were at slightly greater risk than their younger peers.Conclusion: These findings suggest that the occupational demands to which Turkish military personnel are exposed are associated with IDK developing and worsening over time after ACL rupture as military duties continue.</div

The effects of early physiotherapy treatment on musculoskeletal injury outcomes in military personnel: A narrative review

The risks and incidence rates of musculoskeletal injuries among military personnel are high, and the importance of physiotherapy in treating these injuries is well established. However, what is less clear is whether the timing of commencement of physiotherapy treatment affects musculoskeletal injury outcomes in military personnel. This lack of clarity is exacerbated by the known underreporting of injuries among military personnel, and the resulting self-management of musculoskeletal injuries using analgesics, non-steroidal anti-inflammatories and other means. This narrative review was designed to identify and synthesize current evidence regarding the effects of timing of physiotherapy treatment on musculoskeletal injury outcomes, focusing on potential benefits of early versus typical or delayed commencement of physiotherapy treatment. Overall, current evidence suggests early physiotherapy treatment of musculoskeletal injuries offers distinct advantages over typical or delayed commencement of physiotherapy treatment in military settings. Specifically, it appears early treatment expedites recovery in early phases following injury onset and benefits longer term mental health and well-being. It may also reduce the need for more invasive and costly health care interventions and enable earlier return to training and operational service. Importantly, a cultural shift within military contexts to ensure early reporting of musculoskeletal injuries is required if the benefits of early commencement of physiotherapy treatment are to be achieved

The incidence and risk factors for the development of fractures in military recruits and qualified personnel: A rapid review

Aim: To identify and synthesise findings from studies reporting on the incidence of, and risk factors for, traumatic fractures in military personnel.Design: Rapid reviewMethods: Following the PRISMA guidelines, PubMed, EBSCO, CINAHL and ProQuest databases were systematically searched using key terms derived from the following concepts: ‘fractures’, ‘work’ and ‘risk’. Key findings from the included studies were extracted and tabulated, including risk factors, incidence and risk ratios.Results: Twenty-eight studies were included, with four studies reporting on recruit/trainees and 24 reporting on qualified military personnel. Recruit incidence ranged from 7.7 – 29.5 cases per 1,000 person-years, while incidence in qualified personnel ranged from 1.9 – 57.6 cases per 1,000 person-years. Enlisted personnel, younger service members (18 – 29 years), and personnel of Army and Marines Corp branches were at increased risk. Fractures predominantly occurred in the lower extremities, although the hands were often a site of traumatic fracture. Risk factors and mechanisms identified for traumatic fractures included NSAID use, sports, physical training, motor vehicle accidents, collisions, blasts from improvised explosive devices, and gunshots, often in combat settings.Conclusion: The findings highlight the incidence of fractures in recruits and qualified military personnel, and identify a range of risk factors in military environments

The Classification of Obsessive–Compulsive and Related Disorders in the ICD-11

Background To present the rationale for the new Obsessive–Compulsive and Related Disorders (OCRD) grouping in the Mental and Behavioural Disorders chapter of the Eleventh Revision of the World Health Organization’s International Classification of Diseases and Related Health Problems (ICD-11), including the conceptualization and essential features of disorders in this grouping. Methods Review of the recommendations of the ICD-11 Working Group on the Classification for OCRD. These sought to maximize clinical utility, global applicability, and scientific validity. Results The rationale for the grouping is based on common clinical features of included disorders including repetitive unwanted thoughts and associated behaviours, and is supported by emerging evidence from imaging, neurochemical, and genetic studies. The proposed grouping includes obsessive–compulsive disorder, body dysmorphic disorder, hypochondriasis, olfactory reference disorder, and hoarding disorder. Body-focused repetitive behaviour disorders, including trichotillomania and excoriation disorder are also included. Tourette disorder, a neurological disorder in ICD-11, and personality disorder with anankastic features, a personality disorder in ICD-11, are recommended for cross-referencing. Limitations Alternative nosological conceptualizations have been described in the literature and have some merit and empirical basis. Further work is needed to determine whether the proposed ICD-11 OCRD grouping and diagnostic guidelines are mostly likely to achieve the goals of maximizing clinical utility and global applicability. Conclusion It is anticipated that creation of an OCRD grouping will contribute to accurate identification and appropriate treatment of affected patients as well as research efforts aimed at improving our understanding of the prevalence, assessment, and management of its constituent disorders

Carbono orgânico total e suas frações em solo manejado distintamente e cultivado com melão em ambiente protegido.

Com o objetivo de avaliar a evolução dos teores de carbono orgânico total (COT) e de suas frações físicas em diferentes etapas do ciclo produtivo do melão (Cucumis melo L.) amarelo em ambiente protegido, foi conduzido, no setor de campos experimentais da Embrapa Hortaliças, um experimento em casa de vegetação com melão tutorado e cultivo em solo manejado distintamente