Repositório Comum
The Repositório Comum is a repository intended for portuguese institutions in the national scientific system that do not have their own institutional repository, allowing them to give visibility to their scientific production, guarantee easy access to the scientific collection and preserve their production.
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Are the physical activity habits of healthcare professionals associated with their physical activity promotion and counselling?: A systematic review
Publication . Borges, Margarida D.; Ribeiro, Tiago; Peralta, Miguel; Gouveia, Bruna; Marques, Adilson
Objective: Healthcare professionals (HCPs) play an important role in conducting brief physical activity counselling during consultations, representing one of the population's most cost-effective interventions for its promotion. Despite this, their clinical practice often falls short in addressing physical activity with the necessary
depth and frequency. This study aimed to synthesise the literature concerning the association between the
physical activity habits of HCPs and their attitudes toward physical activity promotion and counselling.
Methods: The systematic review followed PRISMA (Preferred Reporting Items for Systematic Reviews and MetaAnalyses) guidelines. Its protocol was registered in PROSPERO under ID: CRD42023408302. In March 2023, a
comprehensive search was conducted using key terms related to physical activity levels and HCPs counselling
practices across the Web of Science, Scopus, PubMed, SPORTDiscus, APA PsycInfo, and CINAHL databases.
Registered HCPs classified under the International Standard Classification of Occupations (ISCO) were included.
The Newcastle-Ottawa Scale was used for assessing articles quality.
Results: The search yielded 6618 articles, with 51 meeting the inclusion criteria after filtering and crossreferencing. Predominantly cross-sectional studies were included, mainly involving HCPs responding to questionnaires regarding their physical activity habits and promotion and counselling practices. Heterogeneous results were found.
Conclusion: High-quality studies mainly concluded that higher physical activity levels among HCPs were associated with more physical activity promotion and counselling practices. These findings are an important
contribution to the relevance of the physical activity practice by HCPs and highlighting the importance of
promoting its counselling in clinical practice.
Capital psicológico enquanto mediador do conflito trabalho-família e da saúde em geral
Publication . Sousa, Lúcia de; Rosinha, António
Nos últimos anos, o interesse pela relação entre o trabalho, a família e o bem-estar dos indivíduos no contexto organizacional tem crescido, dado o impacto das mudanças tecnológicas e familiares. Este estudo investiga as relações entre capital psicológico (PsyCap), conflito trabalho-família (CTF), carga mental (CM), saúde em geral e satisfação com a vida, explorando diferentes setores profissionais. Estudos prévios indicam que o PsyCap é essencial para o desempenho e satisfação no trabalho, contribuindo para a motivação e resiliência, e que o CTF e a carga mental afetam negativamente o bem-estar (Avey et al., 2011; Greenhaus & Beutell, 1985; Luthans et al., 2015; Obrenovic et al., 2020; Wang et al., 2021). O estudo visa analisar o impacto do PsyCap na satisfação com a vida e saúde geral, com CTF e carga mental como mediadores. A amostra incluiu 206 participantes (média de idade = 38 anos; DP = 11,97), sendo 66% mulheres. Utilizou-se um método quantitativo, transversal e correlacional, com questionário via Google Forms. As medidas incluem as escalas COPSOQ, CarMen-Q, CPC-12, GHQ-12 e SWLS. A análise de mediação foi realizada pelo PROCESS v4.2 de Andrew Hayes. Resultados indicam que o PsyCap media a relação entre CTF, carga mental e bem-estar, reforçando que o PsyCap atua como recurso protetor contra CTF e carga emocional. O CTF apresentou média de 3,19 e a carga mental 1,77, sugerindo impacto moderado sobre o bem-estar. A análise de mediação confirma que a carga mental medeia significativamente a relação entre PsyCap e saúde geral. Estas evidências apoiam o papel positivo do PsyCap no bem-estar e na saúde mental no trabalho, mostrando que altos níveis de PsyCap aumentam satisfação e saúde. No plano prático, os resultados apontam para a necessidade de investimento organizacional em programas de desenvolvimento de PsyCap, através de coaching e treino de resiliência, além de políticas de equilíbrio entre trabalho e vida pessoal. Limitações incluem a natureza transversal e auto-reportada da amostra, sugerindo futuras pesquisas longitudinais para uma avaliação mais robusta. Conclui-se que o PsyCap é essencial para enfrentar desafios emocionais no trabalho, proporcionando benefícios tanto para o colaborador quanto para a organização.
The influence of the international oil price on the EUR/USD exchange rate
Publication . Dias, Rui; Galvão, Rosa; Alexandre, Paulo; Teixeira, Nuno; Palma, Cristina; Leote, Francisco
The study analyses the influence of the international oil price, focusing on the CBOE Crude Oil Volatility Index and Brent crude oil,
on the main exchange rates: EUR/GBP, EUR/USD, GBP/USD, USD/CHF and USD/JPY. The analysis covers the period
from 3 January 2022 to 8 December 2024 to examine the relationship between fluctuations in the oil market and the behaviour of
exchange rates. The results show that the CBOE index directly impacts the EUR/GBP currency pair, reflecting the influence of global
volatility on financial markets. The EUR/USD pair is influenced by the behaviour of the USD/JPY currency pair, showing the
interconnection between the major currencies. Brent futures significantly affect the USD/CHF and USD/JPY currency pairs due to
the importance of oil as a strategic commodity and the sensitivity of currencies such as the Yen and Swiss franc to fluctuations in energy
prices. These relationships show the strong interconnectedness of global markets, highlighting the importance of informed risk
management and decision-making strategies in interdependent environments.
The role of perceived organisational support in predicting organisational commitment and organizational citizenship behavior in professional organizations
Publication . Singh, Sandhya; Dias, Rui; Irfan, Mohammad; Galvão, Rosa; Alexandre, Paulo; Gonçalves, Sidalina
The study examined the "role of perceived organisational support in predicting organisational commitment and organisational citizenship behaviour in professional organisations". The primary data was acquired through a questionnaire from 200 respondents (employees from the finance and technology sectors) via a stratified random sampling technique. Excel and SPSS 26 were utilised for data analysis, and Statistical tools such as Anova, regression and correlation were used. The results demonstrated that perceived organisational support (POS) positively influences organisational commitment. Moreover, it has been found that perceived organisational support (POS) and organisational citizenship behaviour (OCB) in professional organisations have a substantial correlation, and there are significant differences in the perception of organisational support, commitment, and OCB among professionals working in the technology and finance sectors. This study can assist decision-makers and managers in the finance and technology sector in creating a comprehensive plan for organisational support and development programs that effectively include employees in their job responsibilities. The study provides valuable insights into the importance of perceived organisational support in fostering organisational commitment and citizenship behaviour.
Delving into the exchange-traded funds (ETFs) market: understanding market efficiency
Publication . Dias, Rui; Galvão, Rosa; Irfan, Mohammad; Alexande, Paulo; Gonçalves, Sidalina; Almeida, Liliana
Exchange-traded funds (ETFs) are the most popular products in the financial sector today. There is extensive literature on the multifractal
analysis of some stock markets, but not about the multifractal behaviour of the ETF market. This study examines the efficiency of stock
index ETFs worldwide from an Efficient Market Hypothesis (EMH) perspective, using the ETFs: Ishares Msci World ETF (URTH),
Ishares Russell 1000 ETF (IWB), SPDR S&P 500 ETF TRUST (SPY), Ishares Global Clean En. ETF (ICLN), Ishares USD
Green Bond ETF (BGRN), from 1 January 2021 to 24 May 2024. It analyses a pre-conflict and a geopolitical conflict to uncover
distinct patterns of behaviour reflecting significant changes in market conditions. Before the conflict, the Ishares MSCI World, Ishares
Russell 1000, SPDR S&P 500 and Ishares USD Green Bond ETFs showed signs of anti-persistence in returns, indicating a lack of
strong relationship or predictability between short-term price movements. The Ishares Global Clean Energy ETF did not reject the random
walk hypothesis, suggesting that returns follow a pattern closer to random, where market prices already efficiently reflect all available
information. During the conflict, there was a transition in the ETFs' behaviour patterns, as evidenced by the increases in slope values for
Ishares MSCI World, Ishares Russell 1000, SPDR S&P 500, Ishares Global Clean Energy and Ishares USD Green Bond. Thus,
the possible transition from anti-persistence to long-term memories in ETF returns during the conflict. For portfolio managers, these findings
highlight the need to continually adapt investment strategies to manage risks better and take advantage of opportunities in a dynamic and
complex investment environment.