Active Commuting: An Opportunity to Fight Both Climate Change and Physical Inactivity

Global health, climate, and ecological conditions cannot be dissociated, and over the last decade, the impacts of climate change on health have been profoundly felt. In 2010, the transport sector has been responsible for the direct emission of 6.7 Gt of carbon dioxide (CO2), and these numbers are expected to double by 2050. Additionally, physical inactivity rates have been growing over the last years, with most individuals in developed countries still relying on their cars for daily transportation, despite the unexplored potential of daily commuting in the promotion of physical activity. Given the well-known link between chronic diseases and sedentary lifestyles, addressing both the upward tendency of public health costs and energy consumption obtained from fossil fuels can be, possibly, one of the greatest public health opportunities over the last century. In this paper, we explore the potential of active commuting as a contemporary approach to address both global issues, considering its benefits on several indicators of health, quality of life, and well-being, as well as environmental-friendly behaviorsinfo:eu-repo/semantics/publishedVersio

Estudo descritivo e comparativo dos níveis de aptidão física e do auto-conceito físico em adultos jovens de ambos os sexos praticantes de actividades de academia

Dissertação de Mestrado em Ciência do Desporto, área de especialização em Desporto de Recreação e Lazer, apresentada à Faculdade de Ciências do Desporto e de Educação Física da Universidade do Port

Effects of a 24-week low-cost multicomponent exercise program on health-related functional fitness in the community-dwelling aged and older adults

This study aimed to examine the effects of a low-cost multicomponent exercise program on health-related functional fitness in the community-dwelling aged and older adults. As a second objective, this study compared the exercise program between aged adults (<65 years) and those considered elderly ( 65 years). Materials and Methods: Forty-eight participants were included in the exercise program, and their mean age was 64.73 years ( 5.93 years). The Senior Fitness Tests were performed by each participant. A dynamometer was used to assess hand grip strength, and body composition was assessed considering the body mass index. Paired-sample t test was used to compare data at baseline and after the exercise program, considering the total sample. Afterwards, a 2   2 analysis of variance was used to examine differences within and between groups. Results: Statistically significant improvements in the chair stand (t = 14.06; p < 0.001; d = 0.42), arm curl (t = 12.10; p < 0.001; d = 0.58), 2 min step test (t = 9.41; p < 0.001; d = 0.24), timed up and go test (t = 5.60; p < 0.001; d = 0.19), and hand grip strength (t = 3.33; p < 0.001; d = 0.15) were observed. There were also significant differences in the back scratch (t = 6.68; p 0.05). Conclusion: This study provides evidence that a 24-week low-cost community-based exercise program can improve functional fitness in aged and in older adults. The exercise program supplied the necessary data to construct further randomized controlled trials that can be performed in the community in an environmentally sustainable fashion and applied, not only to the elderly, but also to those transitioning to this age group.This research was funded by national funds through the Portuguese Foundation for Science and Technology, I.P., grant number UIDB/04748/2020 and grant number UIDB/04045/2020info:eu-repo/semantics/publishedVersio

Ingredientes para alimentos funcionais: uma área de futuro?

Os prebióticos são ingredientes alimentares não digeríveis, geralmente oligossacarídeos, que exercem um efeito benéfico no indivíduo estimulando selectivamente o crescimento e/ou actividade de espécies bacterianas existentes no cólon, melhorando a saúde do hospedeiro. O mercado mundial deste tipo de produtos tem vindo a crescer a taxas bastante elevadas, apesar de os seus preços de venda serem ainda bastante elevados. Neste sentido, é de acreditar que o desenvolvimento de novos processos de produção biotecnológicos com menores custos associados impulsione ainda mais o mercado. O projecto “BIOLIFE – Ingredientes para alimentos funcionais” visa o desenvolvimento de processos alternativos de produção de prebióticos

A Comprehensive Review and Bifactor Modeling Analysis of the Brief COPE

The Brief COPE is a measure of coping strategies that contains 14 factors. The purpose of this research was twofold: (a) examine the psychometric proprieties of the Brief Cope in previous studies; and (b) perform Confirmatory Factor Analyses (CFA) with second-order model and bifactor model specifications that could be used to assess the best model that represents the 14 coping strategies inherent to the instrument. In order to meet the first objective, a bibliographic review of published peer-reviewed studies between 1997 and 2021 was conducted. Results from the review identified 50 studies, of which 21 used exploratory factor analysis, 28 CFA and one study test-retest analysis. Seventeen studies used the entire correlated 14-factor structure. However, only 11 studies conducted a CFA. For the second objective, a sample of 472 working class individuals (female = 278) with a mean work experience of 19.06 years (SD = 11,92) were recruited. We tested several model specifications, convergent and discriminant validity analysis. We found the correlated 14-factor structure of the Brief COPE to have good psychometric properties. The second-order and bifactor model specifications displayed poor fit or did not converge, respectively. The measure showed good convergent and discriminant validity, and the subscales showed adequate internal consistency. We provide further validity and reliability of the correlated 14-factor structure, evidencing that this measure can assess coping mechanisms. Secondorder model specifications need further testing and empirical evidence to support such hierarchical categorization.info:eu-repo/semantics/publishedVersio

The relationship between past exercise behavior and future exercise adherence: A sequential mediation analysis

The present study explored the mediation role of past exercise adherence, self-reported frequency and intentions in the association between past experience and future exercise adherence. In total, 431 exercisers (female = 216; male = 215) aged 18 and 64 years, engaged in fitness activities such as group fitness classes and resistance training, were included in the analysis. Serial mediation procedures were employed to examine the direct, indirect, and total indirect effects among variables. The predictor variable and all mediators displayed a positive and significant association with future six-month adherence. Past six-month exercise adherence displayed the most significant association with future six-month adherence. The sequential indirect path from exercise experience → past six-months adherence → self-reported frequency → intentions future six-months adherence displayed a positive and significant effect (β = .19 [CI95% = .09, .31]), presenting a partial mediation effect. Past behaviour is the most significant predictor of future adherence, and thus interventions should be based on promoting consistent exercise frequency. Professionals working in the fitness centre context can identify possible dropouts based on their past behaviour and intentions to be physically active in the future.info:eu-repo/semantics/publishedVersio

The impact of an exercise intervention using low-cost equipment on functional fitness in the community-dwelling older adults: A pilot study

Exercise interventions have shown significant improvements in the older adult population regarding functional and cognitive capacity. However, much research has applied exercise protocols that are expensive both for research and participation. Thus, high investments that are made are currently not ecologically efficient. The aim of the study was to determine whether the impact of a 20-week multicomponent exercise intervention using low-cost material could improve physical fitness in community-dwelling older adults. We tested the feasibility of this three times per week exercise protocol using an inclusive approach. Eligibility criteria included age ≥65 years, the ability to stand and walk with or without assistive devices, being physically inactive; medical clearance, and living in the community. Outcomes were muscle resistance measured using the chair-stand test for lower limbs, cardiorespiratory capacity measured using the 6-min walk test, and agility and balance using the Timed-up and Go test. Flexibility was measured using the chair sit and reach for lower limbs and the back scratch for upper limbs using the dominant leg and arm, respectively. Hand grip strength was measured using a dynamometer. Thirty participants (n = 30) were recruited and included in the intention-to-treat analysis. The mean age of participants was 70 years (±3.62 years), 100% were Caucasians, and 50% were female. There was a significant trend toward a clinically important improvement in the chair-stand (t = −5.23; p < 0.001; d = 0.36), arm curl (t = −5.21; p < 0.001; d = 0.74), 6-min walk test (t = −4.69; p = <0.001; d = 0.77), timed-up and go test (t = 8.788; p < 0.001; d = 1.18), and hand grip strength (t = 2.846; p = 0.009; d = 0.23). There were also differences in the back scratch (t = 2.243; p = 0.035; d = 0.29) and chair sit and reach test (t = −3.380; p < 0.001; d = 0.15). This pilot study has provided preliminary evidence that a 20-week community-based low-cost exercise program may be effective in improving overall functional fitness in older people. The pilot trial has provided the necessary data to design future randomized-controlled trials that can be implemented in the community in an ecological feasible manner.info:eu-repo/semantics/publishedVersio

Mental Toughness and Resilience in Trail Runner’s Performance

Our purpose with this study was to analyze trail runners’ psychological variables of mental toughness (MT) and resilience, and their associations with runners’ performances within a quantitative cross-sectional study. In total, we analyzed data from 307 Portuguese trail runners (60 female, 247 male), aged between 20 to 66 years (M age = 41.98; SD = 7.74). The results showed that the measurement model, including the factors of MT, resilience, and performance variables, exhibited an adequate fit to the data: χ2 = 150.01 (74); BS-p = .003; CFI= .953; TLI = .942; RMSEA = .058 90% (.045, .071) and SRMR= .042. Standardized direct effects revealed positive associations between these variables. More specifically: (a) MT was significantly associated with resilience; and (b) resilience was significantly associated with performance. The indirect regression paths showed that MT was positively associated with performance, with resilience considered a possible mediator (β = .09 IC = .010, .168; p = .02). In total, considering direct and indirect effects, the model explained 21% of performance variance among trail runners.info:eu-repo/semantics/publishedVersio