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1.
BMC Palliat Care ; 23(1): 71, 2024 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-38481297

RESUMO

BACKGROUND: Understanding cancer patients' unmet needs for chemotherapy-related symptom management will assist clinicians in developing tailored intervention programs. Little is known about the association between perceived communication efficacy and unmet care needs for symptom management in patients with lung and colorectal cancer. OBJECTIVES: To examine the unmet care needs for symptom management of patients with lung and colorectal cancer and their association with perceived communication efficacy. METHODS: A cross-sectional survey was conducted in a tertiary hospital in China from July to November 2020. A convenience sample of 203 patients with lung and colorectal cancer undergoing chemotherapy completed survey questionnaires, including the MD Anderson Symptom Inventory Scale and the Perceived Efficacy in Patient‒Physician Interactions Scale. RESULTS: Approximately 43% of participants had at least one symptom with unmet needs. Fatigue was reported as the symptom with the highest occurrence (66%), the highest demand for supportive care (36%), and the highest prevalence of unmet needs (19%). Low levels of perceived communication efficacy independently predicted participants' unmet needs for symptom management (ß=-0.13, p = 0.011). CONCLUSIONS: This study highlights the necessity of introducing clinical assessment tools and guidelines to address fatigue and other chemotherapy-induced symptoms in patients with lung and colorectal cancer. Clinical programs designed to actively engage cancer patients to voice their needs and strengthen their communication efficacy are also warranted.


Assuntos
Antineoplásicos , Neoplasias Colorretais , Humanos , Estudos Transversais , Inquéritos e Questionários , Comunicação , Neoplasias Colorretais/complicações , Neoplasias Colorretais/tratamento farmacológico , Pulmão , Antineoplásicos/efeitos adversos , Necessidades e Demandas de Serviços de Saúde , Qualidade de Vida
2.
Appl Nurs Res ; 76: 151765, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38641377

RESUMO

OBJECTIVES: Drawing on findings from a qualitative study that aimed to explore the knowledge and attitudes of nurses from culturally and linguistically diverse (CALD) backgrounds about voluntary assisted dying (VAD). The study also aimed to identify the strategies that assist nurses in their readiness and preparation for exposure to VAD. This paper reports on the educational content and strategies that could assist nurses from CALD backgrounds to be better prepared when they encounter VAD requests. BACKGROUND: Around the world, healthcare professionals have roles to play in caring for patients requesting voluntary assisted dying. Nurses, particularly those from diverse geographic and clinical settings, have voiced inadequate knowledge and understanding about voluntary assisted dying. DESIGN: A qualitative descriptive approach was undertaken. METHODS: Data collection involved one focus group and 16 in-depth interviews. A total of 21 nurses from CALD backgrounds were recruited from one Australian state. Thematic analysis was conducted to interpret the data. FINDINGS: Nurses identified their knowledge gaps and specified the need for education and workplace training on VAD, its legal and ethical aspects, clarity on their role, communication techniques and how VAD intersects with their practice. They suggested various teaching strategies that could prepare nurses to work safely and confidently in a clinical environment where voluntary assisted dying is an option for patients. CONCLUSION: Given the high number of nurses from diverse backgrounds working in the Australian health sector, these nurses need to be fully prepared to care for patients requesting VAD.


Assuntos
Suicídio Assistido , Humanos , Austrália , Pessoal de Saúde , Grupos Focais , Pesquisa Qualitativa
3.
J Hum Nutr Diet ; 36(3): 742-753, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36448617

RESUMO

BACKGROUND: This scoping review presents existing research evidence regarding diet therapy in patients with rare diseases (RDs). METHODS: Using the five-stage scoping review framework proposed by Arksey, O'Malley and Levac, we searched the published literature in PubMed, Web of Science, Royal Society of Chemistry, China National Knowledge Infrastructure, VIP Database and Wan Fang Database from January 2010 to November 2022. We selected diet therapy studies on 121 RDs, as categorised by the National Health Commission of China in 2018. Charts for research analysis were developed and used to categorise the data. RESULTS: We ultimately included 34 diet therapy studies from 19 countries and territories for 10 RDs and 3 RD groups. RD diet therapy studies have mainly focused on inborn errors of metabolism (92.3%) and are common in Western countries. Most studies focused on diet therapy methods for RDs (44%). In addition, 29% of studies included diet therapy management, 15% included guidelines for diet therapy and 12% included the impact of diet therapy on patients. CONCLUSIONS: Current diet therapies for RDs lack specificity and present with limited characteristics. Therefore, it is necessary to expand the scope and depth of future research and explore evidence-based recommendations and new diet therapies focused on patient needs and family support to provide a reference for improving the efficacy and safety of diet therapies for RDs.


Assuntos
Doenças Raras , Projetos de Pesquisa , Humanos , Doenças Raras/terapia , China
4.
Mikrochim Acta ; 190(1): 7, 2022 12 06.
Artigo em Inglês | MEDLINE | ID: mdl-36471018

RESUMO

A simple method is reported for hypochlorite determination based on fluorescence 3-aminophenylboronic acid-functionalized molybdenum disulfide quantum dots (B-MoS2 QDs). B-MoS2 QDs with strong fluorescence at 380 nm have been successfully synthesized by the amidation reaction between APBA and hydrothermal MoS2 QDs. Hypochlorite sensing was proposed utilizing the fluorescent quenching effect of 3,3',5,5'-tetramethylbenzidine dihydrochloride (TMB) on B-MoS2 QDs and the fast redox reaction between hypochlorite and TMB. The fluorescent quenching effect of TMB to B-MoS2 QDs was proved to be caused by static dynamic quenching and inner filter effect. A good linear relationship was obtained in the hypochlorite concentration range from 1 to 20 µM, and the limit of detection (LOD) was 36.8 nM. The proposed fluorescent detection assay was simple and fast, taking only 5 min at room temperature. Satisfactory results were obtained in the standard spike recovery tests on tap water and milk samples, which indicate high potential in constructing fluorescent bio-detection assays.


Assuntos
Molibdênio , Pontos Quânticos , Ácido Hipocloroso , Corantes Fluorescentes
5.
Mikrochim Acta ; 189(12): 481, 2022 11 29.
Artigo em Inglês | MEDLINE | ID: mdl-36445495

RESUMO

Novel Co(OH)2/MXene-Ti3C2 nanocomposites with oxidase (OXD)-mimic, peroxidase (POD)-mimic, and catalase (CAT)-mimic activities were prepared by a simple two-step method. The Co(OH)2/MXene-Ti3C2 nanocomposites with triple-enzyme mimic activities were embedded into sodium alginate (SA) gels for the first time to fabricate a target-responsive hydrogel-assisted assay. The catalytic mechanism and steady-state kinetics of Co(OH)2/MXene-Ti3C2 nanocomposites were investigated. Subsequently, hypoxanthine (Hx) was catalyzed by xanthine oxidase (XOD) to form H2O2, which reacts with 3,3',5,5'-tetramethyl-benzidine (TMB) in the presence of Co(OH)2/MXene-Ti3C2 nanocomposites to form a blue oxide (ox-TMB) in the hydrogel. The visible color change of the hydrogel with the increase of Hx concentration can be recognized through a smartphone App to transfer the red (R), green (G), and blue (B) values for the quantitative determination of  Hx, with a detection range from 5 to 250 µM, and detection limit of 0.2 µM. The method was applied to the determination of Hx content in different aquatic products. The spiked recoveries of the aquatic products were from 94.1 to 106.4%, and the relative standard deviations (RSD) were less than 5.4%. Our results show that the Co(OH)2/MXene-Ti3C2 nanocomposites hydrogel-assisted colorimetric biosensor is cost-effective, sensitive, and selective and has excellent application prospects for in-the-field determination of Hx.


Assuntos
Hidrogéis , Nanocompostos , Hipoxantina , Peróxido de Hidrogênio , Titânio
6.
Palliat Support Care ; : 1-6, 2022 Oct 13.
Artigo em Inglês | MEDLINE | ID: mdl-36226853

RESUMO

OBJECTIVES: This pilot project replicated a self-compassion program to support health-care professionals in palliative care settings. We anticipated that undertaking this program would enhance participants' psychological well-being. METHODS: Participants were recruited by convenience sampling from palliative care services in an area of Melbourne, Australia. Because of the COVID-19 pandemic, the program was offered online and comprised six once-weekly gatherings. Three survey rounds with identical questions were conducted prior to, immediately after, and 3 months after the training. The surveys consisted of 6 scales: the Self-Compassion Scale, the Santa Clara Brief Compassion Scale, the Cognitive and Affective Mindfulness Scale, the Depression Anxiety Stress Scale, the Professional Quality of Life Scale, and the Interpersonal Reactivity Index Scale. Paired-sample t-test and repeated measures analysis of variance analyses were used to compare participant responses. RESULTS: Nine participants working in palliative care completed the training and 3 surveys and included qualitative responses. The experience was overwhelmingly positive. Self-compassion (F = 14.44; p < 0.05) and mindfulness (F = 18.44; p < 0.05) scores significantly increased post-training, were picked up in a short time and endured. The emotional state improved by compassion satisfaction, showing a positive improvement 3 months post-training, along with there being no changes in compassion satisfaction, burnout, and dispositional empathy. SIGNIFICANCE OF RESULTS: Participants all worked in a supportive environment, which encouraged self-care. Even against the pandemic difficulties, a short online program was effective, assisting participants to cultivate their inner resources in mindfulness and self-compassion. While a small sample size, expansion of the training may benefit the wider palliative care workforce.

7.
J Nurs Manag ; 30(7): 2259-2267, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35434870

RESUMO

AIM: To explore junior nurses' and final-year student nurses' intention to care for COVID-19 patients amidst the Delta COVID-19 variant outbreak in China using the theory of planned behaviour (TPB) as a framework. BACKGROUND: The COVID-19 pandemic has intensified global nursing shortage. Junior nurses and final-year student nurses represent the backbone of the future frontline nursing workforce. The TPB is a valid theoretical model for predicting nurses' caring behaviours. METHODS: A 47-item self-administered questionnaire was disseminated online to a convenience sample of 547 junior nurses and final-year student nurses located in 13 regions across mainland China. RESULTS: Approximately 63.4% of the participants intended to care for COVID-19 patients voluntarily and 65.6% by non-voluntary assignment. The TPB model significantly predicted 45% of the variance in behavioural intention, subjective norms being the strongest predictor. Gender, vaccination status and ethical perceptions regarding frontline work significantly correlated with the intention to provide care. CONCLUSIONS: Our findings highlight the importance of social, organisational and family support underpinning future junior nurses' professional commitment in times of public health crisis. IMPLICATIONS FOR NURSING MANAGEMENT: Pandemic-tailored workplace training programmes for nurses/student nurses that emphasize on self-care and ethical issue discussions are warranted. Hospital managers should collaborate with community partners to offer additional family support for nurses in need.


Assuntos
COVID-19 , Enfermeiras e Enfermeiros , Recursos Humanos de Enfermagem Hospitalar , Estudantes de Enfermagem , Humanos , Estudos Transversais , Intenção , SARS-CoV-2 , COVID-19/epidemiologia , Atitude do Pessoal de Saúde , Pandemias , Inquéritos e Questionários , China/epidemiologia
8.
Mikrochim Acta ; 189(1): 19, 2021 12 07.
Artigo em Inglês | MEDLINE | ID: mdl-34877612

RESUMO

A rapid and facile method is reported for the detection of ascorbic acid using molybdenum disulfide quantum dots (MoS2 QDs) as a fluorescence sensor. Water-soluble and biocompatible MoS2 QDs with the maximum fluorescence emission at 506 nm have been successfully synthesized by hydrothermal method and specific detection for ascorbic acid (AA) was constructed to utilize the modulation of metal ion on the fluorescence of MoS2 QDs and the affinity and specificity between the ligand and the metal ion. The fluorescence of MoS2 QDs was quenched by the irreversible static quenching of Fe3+ through the formation of a MoS2 QDs/Fe3+ complex, while the pre-existence of AA can retain the fluorescence of MoS2 QDs through the redox reaction between AA and Fe3+. Based on this principle, a good linear relationship was obtained in the AA concentration range 1 to 150 µM with a detection limit of 50 nM. The proposed fluorescent sensing strategy was proven to be highly selective, quite simple, and rapid with a requirement of only 5 min at room temperature (RT), which is particularly useful for rapid and easy analysis. Satisfactory results were obtained when applied to AA determination in fruits, beverages, and serum samples as well as AA imaging in living cells, suggesting its great potential in constructing other fluorescence detection and imaging platforms.


Assuntos
Ácido Ascórbico/sangue , Dissulfetos/química , Corantes Fluorescentes/química , Molibdênio/química , Pontos Quânticos/química , Ácido Ascórbico/química , Citrus/química , Sucos de Frutas e Vegetais/análise , Células HeLa , Humanos , Ferro/química , Limite de Detecção , Microscopia Confocal , Microscopia de Fluorescência , Espectrometria de Fluorescência
9.
Nurs Outlook ; 69(1): 13-21, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32980153

RESUMO

BACKGROUND: The rapidly evolving COVID-19 pandemic has become a global health crisis. Several factors influencing risk perception have been identified, including knowledge of the disease, information sources, and emotional states. Prior studies on COVID-19-related risk perception primarily focused on the general public, with little data available on COVID-19 patients. PURPOSE: To investigate COVID-19 patients' risk perception, knowledge of the disease, information sources, and emotional states in the epicenter, Wuhan, during the COVID-19 outbreak in China. METHODS: Data were collected online using self-administered electronic questionnaire developed with reference to previous relevant studies and publications by the World Health Organization. FINDINGS: A higher level of perceived risk was found in relation to COVID-19 as compared to other potential health threats. Knowledge gaps existed regarding transmission and prevention of COVID-19. Additionally, risk perception was negatively related to knowledge and positively related to depressive states. Moreover, social media was a primary source for COVID-19 information, whereas the most trusted sources were health professionals. DISCUSSION: Realistic perception of risk should be encouraged considering both physical and mental health while developing relevant strategies. Furthermore, risk communication needs to be specifically tailored for various target groups, such as the elderly and mentally vulnerable individuals, with the adoption of popular media platforms.


Assuntos
COVID-19/terapia , Conhecimentos, Atitudes e Prática em Saúde , Pacientes/psicologia , Adulto , Idoso , COVID-19/epidemiologia , China/epidemiologia , Informação de Saúde ao Consumidor/estatística & dados numéricos , Emoções , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pacientes/estatística & dados numéricos , Medição de Risco , Inquéritos e Questionários , Adulto Jovem
10.
Angew Chem Int Ed Engl ; 58(14): 4547-4551, 2019 03 26.
Artigo em Inglês | MEDLINE | ID: mdl-30790405

RESUMO

The overproduction of HOCl is highly correlated with diseases such as atherosclerosis, rheumatoid arthritis, and cancer. Whilst acting as a marker of these diseases, HOCl might also be used as an activator of prodrugs or drug delivery systems for the treatment of the corresponding disease. In this work, a new platform of HOCl probes has been developed that integrates detection, imaging, and therapeutic functions. The probes can detect HOCl, using both NIR emission and the naked eye in vitro, with high sensitivity and selectivity at ultralow concentrations (the detection limit is at the nanomolar level). Basal levels of HOCl can be imaged in HL-60 cells without special stimulation. Moreover, the probes provided by this platform can rapidly release either amino- or carboxy-containing compounds from prodrugs, during HOCl detection and imaging, to realize a therapeutic effect.


Assuntos
Desenho de Fármacos , Ácido Hipocloroso/química , Sondas Moleculares/química , Imagem Óptica , Pró-Fármacos/química , Sobrevivência Celular/efeitos dos fármacos , Células HL-60 , Humanos , Estrutura Molecular , Pró-Fármacos/síntese química , Pró-Fármacos/farmacologia
11.
Luminescence ; 32(4): 596-601, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27805310

RESUMO

This paper proposed a simple and sensitive approach for detecting graphene oxide (GO) in a wide pH range in environmental water samples using fluorescent ß-CD protected Cu NCs based on the hydrogen-bond interactions between GO and 6-SH-ß-CD. The influences of dilution ratio and pH were investigated. We found that the fluorescence quenching efficiency of Cu NCs by GO remained almost the same under pH from 4 to 10, which benefitted the monitoring of GO under different pH conditions in real samples. The fluorescence quenching mechanism was also discussed. The fluorescence of ß-CD protected Cu NCs could be quenched in the presence of GO with a lowest detection concentration of 0.1 mg·L-1 . Good linear correlations were obtained over the concentration range from 0 to 30 mg·L-1 at different pH values (pH = 4, pH = 7 and pH = 12). In addition, this method was successfully applied to the determination of GO in real samples which presents more opportunities for application in environmental and material sciences.


Assuntos
Cobre/química , Grafite/análise , Nanoestruturas/química , Poluentes Químicos da Água/análise , beta-Ciclodextrinas/química , Fluorescência , Grafite/química , Ligação de Hidrogênio , Concentração de Íons de Hidrogênio , Microscopia Eletrônica de Transmissão , Sensibilidade e Especificidade , Espectrofotometria Ultravioleta , Espectroscopia de Infravermelho com Transformada de Fourier , Poluentes Químicos da Água/química
12.
Res Sports Med ; 24(3): 157-70, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27248716

RESUMO

A 12-week Wheelchair Tai Chi 10 Form (WTC10) intervention was conducted among elderly with disability to examine the effect of this WTC10 intervention on selected physical and mental health variables. Thirteen (age 87.23 ± 6.71) in the WTC10 intervention group and 15 (age 89.73 ± 6.31) in the control group completed the study. Independent t-tests and paired t-tests were employed to examine the differences between groups and within groups, respectively, at pretest and post-test. The WTC10 intervention group showed significant improvements in systolic and diastolic blood pressure, shoulder external rotation, left trunk rotation and total trunk rotation after the intervention. A 12-week WTC10 intervention had positive effects on blood pressure, range of motion at the shoulder and trunk, physical activity, and mental health among the elderly with disability. WTC10 is a feasible and safe exercise for the elderly with disability.


Assuntos
Pessoas com Deficiência/psicologia , Exercício Físico/fisiologia , Saúde Mental , Tai Chi Chuan , Cadeiras de Rodas , Idoso de 80 Anos ou mais , Pressão Sanguínea , Feminino , Nível de Saúde , Humanos , Masculino , Amplitude de Movimento Articular , Rotação , Articulação do Ombro/fisiologia , Tai Chi Chuan/psicologia , Tronco/fisiologia
13.
PLoS One ; 19(6): e0306134, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38917179

RESUMO

OBJECTIVES: The objective of this study was to examine the impact of athletes achieving excellence at different ages (excellent age) on their subsequent performance development. The aim was to deepen understanding of the interplay among talent, training, and athletes' performance development. Additionally, the study aimed to provide insights for athletics coaches to better identify talent and devise more effective personalized long-term training plans. DESIGN: This was a cross-sectional study. METHOD: A hierarchical linear model was employed to analyze the correlation between excellent age and subsequent performance development in a cohort of 775 elite track and field athletes. This analysis was expanded upon by the application of a general linear regression model, which was used to explore the relationship between excellent age and peak age, peak performance, as well as the growth in performance during adulthood. RESULTS: As athletes reached excellence at later ages, their peak performance exhibited a U-shaped pattern(p <0.001), initially decreasing and then rising. Simultaneously, their peak age became increasingly advanced(p <0.001), with a progressively larger performance improvement during adulthood(p <0.001). In various disciplines, excellent age is negatively correlated with peak performance for speed athletes(p = 0.025), exhibiting a U-shaped pattern for endurance athletes(p = 0.024), and showing no significant correlation for fast-power athletes(p = 0.916). CONCLUSIONS: Athletes who achieve excellence either early or later often show more remarkable future developments. However, there are significant distinctions in the age at which these athletes reach their peak performance and the pace of improvement leading up to it. Those who excel early may possess greater innate athletic talent, whereas those who excel later may exhibit superior training adaptability. Consequently, an athlete's early performance can predict his/her future performance trajectory, offering support for individualized long-term training plans. In summary, the age at which athletes achieve excellence may bring different advantages to their future athletic performance and development. This implies that we should harness these differences to uncover each athlete's maximum potential.


Assuntos
Atletas , Desempenho Atlético , Humanos , Desempenho Atlético/fisiologia , Adulto , Masculino , Estudos Transversais , Feminino , Adulto Jovem , Fatores Etários , Adolescente , Atletismo , Aptidão
14.
Int J Palliat Nurs ; 30(7): 398-403, 2024 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-39028316

RESUMO

BACKGROUND: Traditional models of palliative care have been tested by the challenges of caring for increasing numbers of people at the end stages of a chronic non-malignant illness. The COVID-19 pandemic and consequent reliance on telehealth services, has enabled the development of creative models of care. AIMS: To improve home-based palliative care for people with chronic illness using telehealth, and this was demonstrated using quality-of-life measures. METHODS: A total of 35 non-cancer referrals to a community palliative care service were recommended for the pilot project, with one specialist palliative care nurse as their contact. All were offered a telehealth service with a specially designed app to self-monitor their symptoms, a session on advance care directives, and self-rated quality-of-life measures using the RAND 36-Item Health Survey (Version 1.0), consisting of 36 items that cover nine domains. Statistical analysis was performed using SPSS software. FINDINGS: Over the 21 months of the pilot study, 13 people chose to participate in the pilot. For participants, telehealth meant more control over their symptoms, fewer emergency presentations and appointment travel time was alleviated. Quality-of-life surveys highlighted physical impairments, which did not change over time. CONCLUSION: This pilot programme demonstrated an innovative approach to addressing the demands of people dying of chronic illness, with further work required to explore the place of telehealth consultations in the overall healthcare system.


Assuntos
COVID-19 , Cuidados Paliativos , Telemedicina , Assistência Terminal , Humanos , Telemedicina/organização & administração , Doença Crônica , Projetos Piloto , COVID-19/epidemiologia , Masculino , Feminino , Austrália , Idoso , Cuidados Paliativos/organização & administração , Pessoa de Meia-Idade , Qualidade de Vida , Idoso de 80 Anos ou mais , SARS-CoV-2 , Pandemias , Serviços de Assistência Domiciliar/organização & administração
15.
BMC Prim Care ; 25(1): 119, 2024 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-38641795

RESUMO

BACKGROUND: Children and adolescents with complex medical issues need home care services; however, few studies have provided insight into the unmet home care needs of the families of patients with osteogenesis imperfecta (OI). In this study, we aimed to assess the home care needs of caregivers of children and adolescents with OI and the associated factors. METHODS: A self-administered questionnaire was administered online to 142 caregivers of patients with OI aged 3-17 years between May and October 2022 from 25 provinces in China. The questionnaire comprised 15 questions on demographic variables and 14 questions on home care needs. Chi-square analysis was used to compare group differences for categorical variables. Multivariate binary logistic regression analysis was conducted to examine predictors of caregivers' home care needs. RESULTS: The study findings indicated that 81.5% of caregivers had high home care needs. The three leading types of home care needs were helping the child carry out physical fitness recovery exercises at home (72.5%), understanding precautions regarding treatment drugs (72.5%), and relieving the child's pain (70.4%). OI patients' poor self-care ability (adjusted odds ratio = 5.9, 95% confidence interval = 1.8-19.0) was related to caregivers' high level of home care needs. CONCLUSIONS: The findings of this study suggest that future scientific research and nursing guidance should focus on OI patients' physical training, medication management, pain relief, fracture prevention, and treatment. In addition, caregivers of patients with poor self-care ability should receive special attention in the development of interventions. This study can help with addressing the unmet home care needs of caregivers of children and adolescents with OI. It is vital to develop a personalized intervention plan based on patients' self-care ability.


Assuntos
Serviços de Assistência Domiciliar , Osteogênese Imperfeita , Criança , Humanos , Adolescente , Cuidadores , Estudos Transversais , Osteogênese Imperfeita/terapia , Avaliação das Necessidades , Inquéritos e Questionários , Dor
16.
Sci Rep ; 14(1): 7073, 2024 03 25.
Artigo em Inglês | MEDLINE | ID: mdl-38528144

RESUMO

To assess the skiing economy (SE) and kinematics during double poling (DP) roller skiing between two groups of skiers in a field setting. Five experienced and five novice male skiers performed a SEDP test at 16 km∙h-1 on an outdoor athletics track. Gas exchange parameters were measured to determine SEDP. A two-dimensional video was filmed to measure the kinematics variables. Experienced skiers exhibited a 21% lower oxygen cost than novice skiers (p = 0.016) in DP, indicating a strong association between SEDP, cycle length and cycle rate (p < 0.001). Additionally, before the poling phase, experienced skiers manifested significantly greater maximum hip and knee extension angles than novice skiers (p < 0.001). During the poling phase, experienced skiers with a greater pole plant angle (p = 0.001), longer flexion time (p < 0.001) and higher flexion angular velocity in the elbow joint (p < 0.05) demonstrated better SEDP. There was an interaction effect of the one-repetition maximum bench press × group in SEDP (b = - 0.656, SE = 0.097, t = - 6.78, p = 0.001). Therefore, experienced skiers with better SEDP demonstrated more efficient cycles, potentially accomplished using dynamic full-body DP motion to ascertain effective propulsion. Combined upper body strength and ski-specific skill training may enhance SEDP in novice skiers.


Assuntos
Teste de Esforço , Esqui , Fenômenos Biomecânicos , Extremidade Inferior , Articulação do Joelho , Consumo de Oxigênio
17.
PLoS One ; 18(5): e0282838, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37163550

RESUMO

OBJECTIVE: To assess the responses to taper in endurance athletes using meta-analysis. METHODS: Systematic searches were conducted in China National Knowledge Infrastructure, PubMed, Web of Science, SPORTDiscus, and EMBASE databases. Standardized mean difference (SMD) and 95% confidence interval (CI) of outcome measures were calculated as effect sizes. RESULTS: 14 studies were included in this meta-analysis. Significant improvements were found between pre- and post-tapering in time-trial (TT) performance (SMD = -0.45; P < 0.05) and time to exhaustion (TTE) performance (SMD = 1.28; P < 0.05). However, There were no improvements in maximal oxygen consumption ([Formula: see text]) and economy of movement (EM) (P > 0.05) between pre- and post-tapering. Further subgroup analysis showed that tapering combined with pre-taper overload training had a more significant effect on TT performance than conventional tapering (P < 0.05). A tapering strategy that reduced training volume by 41-60%, maintained training intensity and frequency, lasted ≤7 days, 8-14 days, or 15-21 days, used a progressive or step taper could significantly improve TT performance (P < 0.05). CONCLUSIONS: The tapering applied in conjunction with pre-taper overload training seems to be more conducive to maximize performance gains. Current evidence suggests that a ≤21-day taper, in which training volume is progressively reduced by 41-60% without changing training intensity or frequency, is an effective tapering strategy.


Assuntos
Atletas , Consumo de Oxigênio , Humanos , China , Resistência Física/fisiologia
18.
Int J Biol Macromol ; 235: 123683, 2023 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-36806777

RESUMO

Developing a hydrogel dressing with excellent antibacterial efficacy for accelerating wound healing is high desirable in clinical applications. In this work, NIR regulated metal-organic framework composite hydrogel dressing was constructed for enhanced antibacterial efficacy and accelerated wound healing via the compounding between hydrogel and UCNPs@ZrMOF-Pt nanoparticles. The visible light emitted from upconvertion nanoparticles (UCNPs) activated porphyrin based metal-organic framework (MOF) in composite hydrogel to generate 1O2 for photodynamic antibacterial therapy under NIR laser irradiation. Moreover, the UCNPs@ZrMOF-Pt in composite hydrogel with catalase-like performance could effectively convert the high concentration H2O2 in wound to abundant O2, which relieved the hypoxic in infected wound. Thus, the photodynamic antibacterial efficacy was remarkably enhanced, leading to accelerate the wound healing. This work presented a novel strategy for high efficient antibacterial therapy and accelerated wound healing.


Assuntos
Estruturas Metalorgânicas , Nanopartículas , Estruturas Metalorgânicas/farmacologia , Catalase , Hidrogéis/farmacologia , Peróxido de Hidrogênio , Antibacterianos/farmacologia , Bandagens , Cicatrização
19.
Spectrochim Acta A Mol Biomol Spectrosc ; 295: 122649, 2023 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-36963221

RESUMO

We proposed a rapid and ratiometric fluorescent detection method for hypochlorite by glutathione functionalized molybdenum disulfide quantum dots (G-MoS2 QDs). The G-MoS2 QDs were obtained through a hydrothermal method and the maximum fluorescence intensity was obtained at 430 nm under excitation of 360 nm. The fluorescence of G-MoS2 QDs at 430 nm can be weakened by curcumin through the inner filter effect, meanwhile the fluorescence of curcumin at 540 nm appeared. Hypochlorite can fast oxidize curcumin and weaken the inner filter effect, thus the fluorescence of curcumin at 540 nm decreased and the fluorescence of G-MoS2 QDs at 430 nm increased. This process takes only 30 s at room temperature. This is the rationale behind our rapid ratiometric fluorescent detection model for hypochlorite. Two linear detection ranges for hypochlorite are obtained with concentration from 1 to 20 µM and 20 to 30 µM, the limit of detection (LOD) was 11.5 nM. The standard spike recovery tests on milk and tap water samples showed satisfactory results, which extended the application of G-MoS2 QDs in the field of ratiometric fluorescence detection assays.


Assuntos
Curcumina , Pontos Quânticos , Molibdênio , Ácido Hipocloroso , Corantes Fluorescentes , Glutationa , Espectrometria de Fluorescência/métodos , Limite de Detecção
20.
West J Nurs Res ; 45(7): 626-633, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37021833

RESUMO

Chinese-educated nurses are increasingly important to the international labor market. This study aimed to examine how Chinese migrant nurses adapt and evolve professionally while pursuing nursing careers in Australia, using a qualitative descriptive approach. A total of 17 Chinese-educated nurses were recruited by purposive and snowball sampling in Australia during 2017. Data were collected by individual semi-structured interviews and analyzed using thematic analysis. Three central themes and eight subthemes were generated. Perceived differences in nursing involved: work options and flexibility, professional autonomy and independence, and freedom of expressing professional opinions. Elements comprising challenges to adaptation included communication barriers, nursing workload and responsibilities, and collegial relationships. Participants' professional transition journeys were accompanied by two key areas of self-evolution: Embracing the authentic self and embracing individual differences. Our findings have important implications for migrant-host nursing workforce integration in Australia and internationally.


Assuntos
Enfermeiras e Enfermeiros , Migrantes , Humanos , População do Leste Asiático , Pesquisa Qualitativa , Barreiras de Comunicação
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