CIDESD-IPLeiria – Artigos
URI permanente para esta coleção:
Navegar
Percorrer CIDESD-IPLeiria – Artigos por Objetivos de Desenvolvimento Sustentável (ODS) "09:Indústria, Inovação e Infraestruturas"
A mostrar 1 - 10 de 20
Resultados por página
Opções de ordenação
- Application of hierarchical model of intrinsic and extrinsic motivation in sports: A systematic reviewPublication . Viveiros, Bernardo; Jacinto, Miguel; Couto, Nuno; Cid, Luís; Matos, Rui; Amaro, Nuno; Antunes, Raul; Monteiro, DiogoGiven the increase in sedentary lifestyles and physical inactivity, various psychosocial approaches have been used to combat this epidemic. Several studies have used Self-Determination Theory (SDT) as a theoretical framework for studying behavioral change, as well as the Hierarchical Model of Intrinsic and Extrinsic Motivation (HMIEM) which, based on SDT, aims to explain how different levels of generality can be responsible for behavioral consequences. The aim was to investigate the associations between the variables that make up the HMIEM model applied to the context of physical exercise (gym exercisers). Following the PRISMA protocol and the PECOS strategy, the Web of Science, PubMed, Scopus, and SPORTDiscus databases were used to search for experimental and non-experimental studies written in English. Seven studies were considered for analysis and subjected to a methodological quality assessment The results showed that the variables that make up the social factors (e.g., supportive/thwarting behaviors) tend to be associated with satisfaction of basic psychological needs (BPN) (r = 0.51, p < 0.01; r = −0.73, p < 0.01) and with frustration of BPN (r = −0.39, p < 0.01; r = 0.78, p < 0. 01), BPN satisfaction and frustration tend to be associated with autonomous forms of motivation (r = 0.57, p < 0.01; r = −0.63, p < 0.01) and controlled forms of motivation (r = −0.76, p < 0.01; r = 0.46, p < 0.01) and autonomous and controlled forms of motivation are associated with behavioral consequences (e.g., intention) (r = 0.19, p < 0.01; r = −0.17, p < 0.01). This systematic review covers interpersonal behaviors and the bright and dark sides of SDT, showing that the positive alignment between the psychosocial determinants that make up the horizontal axis of the HMIEM is fundamental for adherence to and maintenance of sustainable physical exercise practices, and future studies should now address these issues in a longitudinal manner and perhaps move on to study the vertical axis of the HMIEM.
- Beyond Autonomy, Competence, and Relatedness: A Comprehensive Scale for Basic Psychological Needs and Novelty in ExercisePublication . Bártolo, Vera; Jacinto, Miguel; Amaro, Nuno; Antunes, Raul; Matos, Rui; Couto, Nuno; Cid, Luís; Monteiro, DiogoBackground/Objectives: Grounded in Self-Determination Theory, this study aimed to translate and validate the Basic Psychological Need Satisfaction and Frustration Scale (BPNSFS), including the Novelty dimension, within the Portuguese exercise context. Given the emerging evidence of novelty as a potential candidate for a basic psychological need, this research examined the psychometric properties and temporal stability. Furthermore, this study explored the nomological validity of these constructs regarding exercise enjoyment and satisfaction with life. Methods: The sample comprised 500 gym-goers (263 females; 237 males), aged between 18 and 65 years (M = 33.76; SD = 12.94). Confirmatory Factor Analysis and Exploratory Structural Equation Modeling were employed to compare the factor structure. Temporal stability was assessed through a test–retest procedure with a four-week interval (n = 50). Results: Exploratory Structural Equation Modeling provided a superior fit to the data (CFI = 0.98; TLI = 0.97; RMSEA = 0.04) compared to Confirmatory factor Analysis, supporting the distinctiveness of the eight dimensions. The instrument demonstrated strong internal consistency (composite reliability ranging from 0.78 to 0.90) and adequate discriminant validity. Path analysis revealed that novelty satisfaction was significantly associated with enjoyment and satisfaction with life. In reverse, novelty frustration was negatively associated with these well-being indicators. Intraclass correlation coefficients (0.75 to 0.83) confirmed robust temporal stability. Conclusions: These findings provide evidence that the Portuguese version of the BPNSFS, including the novelty dimension, is a psychometrically comprehensive instrument for the exercise context. The results support the inclusion of novelty as a relevant psychological need within Self-Determination Theory.
- Biomechanical and bioenergetical evaluation of swimmers using fully-tethered swimming: A qualitative reviewPublication . Amado, Nuno M.; Morouço, Pedro, G.; Marques, Mário C.; Fernandes, Ricardo J.; Marinho, Daniel A.It is presented a qualitative review of the specialized literature on fully-tethered swimming, with the scopes of summarizing and highlighting published knowledge, identifying its gaps and limitations, and motivate future research. The major research conclusions can be summarized as follows: (i) tethered swimming is a reliable test to evaluate force exerted in water by swimmers; (ii) higher maximum values of force are obtained in breaststroke and butterfly, while average values are higher in front crawl; (iii) tethered forces present moderate to strong relationships with swimming velocity, and associations between forces diminish as swimming distance increases; (iv) 30 s maximal tethered swimming may be used as an adaptation of Wingate test for swimming; (v) differences in stroke mechanics can occur in tethered swimming but there is no evidence to suggest that they affect swimming performance; (vi) Tethered swimming is a valid methodology to evaluate aerobic energy contribution in swimming and recent investigations concluded that it can also provide information on the anaerobic contribution. Based on and stimulated by current knowledge, further research should focus on the following topics: (i) the usefulness of tethered swimming as a valid tool to evaluate other swimming techniques; (ii) differences in force parameters induced by gender or competitive level; (iii) defining accurate variables for estimation of anaerobic power and/or capacity using tethered swimming; (iv) bilateral asymmetries in exerted forces, and corresponding influence of breathing; (v) relative contribution of arms and legs for whole-body propelling forces
- Body Image Satisfaction, Overweight Dissatisfaction, and Exercise Persistence: A Self-Determination Theory ApproachPublication . Salvador, Rogério; Naranjo, Lucio; Castuera, Ruth-Jiménez; Rebelo-Gonçalves, Ricardo; Monteiro, DiogoGrounded in Self-Determination Theory (SDT), this study tested the hypothesis that body image perception delineates distinct motivational pathways, linking the perceived interpersonal style of exercise professionals to basic psychological needs, motivation quality, and long-term exercise persistence intentions. A sample of 821 regular exercisers was divided into two groups based on body image: “Satisfied” (n = 276) and “Dissatisfied due to Overweight” (n = 545). Participants completed validated measures of perceived interpersonal behaviors (supportive/thwarting), basic psychological need satisfaction/frustration, motivational regulation, and exercise persistence intention. A clear divergent pattern emerged, strongly supporting the main hypothesis. The “Satisfied” group reported a positive pathway: perceiving more need-supportive behaviors from instructors was associated with greater satisfaction of autonomy, competence, and relatedness, which in turn correlated with more self-determined motivation and stronger persistence intentions. Conversely, the “Dissatisfied” group reported a negative pathway: perceiving more need-thwarting behaviors was associated with greater need frustration, which correlated with more non-self-determined motivation and weaker persistence intentions. Measurement invariance confirmed these pathways are comparable across groups. The findings highlight that body image perception is a key correlate of distinct motivational experiences in exercise settings. Crucially, they underscore the significant association between the professional’s perceived interpersonal style and these pathways. Fostering need-supportive environments that enhance autonomy, competence, and relatedness is associated with more adaptive motivation and adherence, offering a valuable framework for practitioners aiming to support clients, particularly those with body image concerns.
- Changes in lifestyle and physical fitness in the first year of higher education: A longitudinal study with sports studentsPublication . Jacinto, Miguel; Antunes, Raul; Aguiar Santos, Diana; Duarte-Mendes, Pedro; Diz, Susana; Monteiro, Diogo; Matos, Rui; Amaro, NunoThis study aimed to monitor variations in physical activity and fitness levels throughout the first academic year in undergraduate Sports Science students. A prospective longitudinal design included 63 students (46 men, 17 women; 19.7 ± 1.4 years), assessed at four moments (September, January, February, and June). Sociodemographic data were collected, and instruments included IPAQ, anthropometry, body composition, strength, flexibility, and cardiorespiratory fitness tests. Repeated measures ANOVA with Bonferroni correction was applied. Screen time increased significantly over the year. Physical activity levels showed a non-significant decline. Body composition indicators such as fat mass, BMI, and visceral fat increased, while lean and bone mass remained stable. Cardiorespiratory fitness and lower limb flexibility decreased significantly. These findings suggest worsening fitness and increased adiposity over the duration of the first academic year, highlighting the importance of monitoring such indicators to prevent negative health outcomes.
- Determinantes de la eficacia del patrocinio en las carreras de atletismoPublication . Silva, Alfredo; Sobreiro, Pedro; Monteiro, DiogoIntroduction: The athletics races take place in the heart of public space and enjoy high levels of visibility. Race organizers benefit from connecting with sponsoring companies that want results in promoting and selling their brands. Objective: The aim of the research was to test a conceptual model to explain the effects of sponsorship on runners. It used running involvement, perceived altruistic sponsor motives, brand recognition and perceived congruence between sponsors and running as the determining constructs. Methodology: This research shifts the focus from spectator-based sponsorship to participant-based sponsorship. A sample of 736 runners from one of Portugal’s most popular athletics races completed a questionnaire. A Structural Equation Modeling analysis was carried out to test the model and the hypotheses. Results: The model explained that 49% of attitudes toward sponsors and 15% of runners' purchase intentions. The strongest effects were the effect of brand recognition on perceived congruence and the effect of perceived altruistic motives on attitudes toward the sponsor brand. However, running involvement had no significant effect on attitude towards the sponsoring company. Discussion: This research demonstrates the role played by perceptions of sponsors' altruistic motivations in shaping favourable responses to sponsoring companies and runners' intention to buy sponsors' products. Conclusions: The effects of sponsorship of athletics races on runners have been demonstrated, particularly the significant role of brand recognition and perceived altruistic motives. This study offers important implications for race organizers and sponsoring companies.
- The effect of practicing sports on the body composition and physical fitness of people with intellectual and developmental disabilitiesPublication . Oliveira Diz, Susana Cristina; Susano Jacinto, Miguel Ângelo; Costa, Aldo Filipe Matos Moreira Carvalho; Matos, Rui; Monteiro, Diogo; Teixeira, José E.; Antunes, RaulIntroduction: People with IDD tend to have a sedentary lifestyle, which affects their health and physical fitness. Methods: The aim of this study was to analyses the effect of a sport-based intervention, with weekly 60-min sessions over 36 weeks, on the body composition and functional physical fitness of people with Intellectual and Developmental Disabilities (IDD). The sample consisted of 36 institutionalized participants with IDD, divided into two groups: experimental group with 23 participants (M = 37.26; SD = 13.84) and control group with 13 individuals (M = 38.31; SD = 14.22). A stadiometer, bioimpedance equipment and the Hand Grip, Sit and Stand, Timed Up and Go and 6 Min Walk tests were used to assess the variables of interest. Results: The experimental group showed statistically significant values in body mass index (p = 0.01; r = 0.301), muscle mass (p < 0.01; r = 0.431), Sit and Stand Test (p = 0.01; r = 0.324) and 6 Min Walk Test (p < 0.01; r = 0.399). Discussion: The results suggest that long-term programs based on the practice of sports can bring benefits to the body composition and functional physical fitness of adults with IDD.
- Effects of a Workplace Exercise Program on Stress, Burnout, and Quality of Life in Radiologic Technologists: A Randomized Controlled TrialPublication . Ramalho, Pedro; Nunes, António; Silva, Fernanda M.; Ramalho, André; Flores, Gonçalo; Monteiro, Diogo; Duarte-Mendes, PedroBackground/Objectives: Radiologic technologists are frequently exposed to occupational stressors that heighten the risk of burnout, compromising well-being and job performance. Workplace exercise programs have been identified as promising strategies to enhance physical and mental health across occupational groups; however, robust experimental evidence among radiologic technologists remains limited. This study aimed to evaluate the effects of a structured workplace exercise program on perceived stress, burnout, and quality of life among radiologic technologists. Methods: A small-scale randomized controlled experimental study was conducted with 19 radiologic technologists from the Local Health Unit of Castelo Branco, Portugal. Participants were randomly assigned to an experimental group (n = 10, age mean = 43.8 ± 9.92 years old) or a control group (n = 9, age mean = 48.2 ± 7.86 years old). The intervention consisted of a six-week workplace exercise program conducted during work hours, comprising sessions three times per week, twice per day. Each session lasted approximately 15–20 min and included balance, stretching, and light resistance exercises. Outcomes were assessed pre- and post-intervention using the Perceived Stress Scale, the Copenhagen Burnout Inventory, and the WHOQOL-BREF. Results: The experimental group showed significant reductions in perceived stress (p = 0.013, d = −0.697 (−1.6–0.206) [moderate]) and in personal (p = 0.004, d = −0.834 (−1.748–0.08) [moderate]) and work-related burnout (p = 0.026, d = −0.756 (−1.664–0.151) [moderate]), as well as improvements in the physical (p = 0.046, d = 0.592 (−0.303–1.488) [small]) and environmental (p = 0.032, d = 0.991 (0.062–1.92) [moderate]) domains of quality of life. No significant changes occurred in the control group. Conclusions: These preliminary findings suggest that a brief, low-cost workplace exercise program may reduce stress and burnout and improve quality of life among radiologic technologists. These findings support the integration of structured physical activity into healthcare work settings as a feasible, preventive, and health-promoting strategy.
- Effects of dry-land strength training on swimming performance: a brief reviewPublication . Morouço, Pedro; Marinho, Daniel Almeida; Amaro, Nuno; Pérez-Turpin, José Antonio; Marques, Mário CardosoMorouço PG, Marinho DA, Amaro NM, Peréz-Turpin JA, Marques MC. Effects of dry-land strength training on swimming performance: a brief review. J. Hum. Sport Exerc. Vol. 7, No. 2, pp. 553-559, 2012. This article provides a brief review over the state of art concerning dry-land training for swimmers. It is important to understand the role of muscular strength for swimming performance and how it might be improved. Firstly, this article analyzes the relationships between strength or power assessment in dry-land and swimming performance. Secondly, the results of studies aiming to evaluate the influence of dry-land strength training to swimming performance improvement are presented. These results allow coaches to realize the benefits that may be obtained by an appropriate strength training program, according to gender and level.
- Exploring how exercise frequency impacts muscle strength and balance in institutionalized older adults: Protocol for a randomized controlled trialPublication . Rodrigues, Filipe; Pereira, Bernardo; Silva, Elisabete; Monteiro, Diogo; Antunes, RaulThis protocol for a randomized controlled trial aims to evaluate the impact of exercise frequency on muscle strength, balance, and fall risk among institutionalized older adults. Recognizing the unique physical and functional limitations of this population, the study will test whether two or three weekly sessions of multicomponent exercise yield differential outcomes. Sixty participants residing in nursing homes will be randomly assigned to one of two groups: a control group performing exercise twice weekly and an experimental group training three times weekly, over a 12-week intervention period. All sessions will follow international guidelines for older adults, incorporating aerobic, strength, balance, and flexibility training at light-to-moderate intensity. Primary outcomes include lower- and upper-body strength and dynamic balance; secondary outcomes comprise waist circumference, body mass index, and fall incidence. The program is designed with progressive adaptation and safety in mind, employing the Talk Test to regulate intensity and standardized measures to monitor physiological responses. The rationale stems from the gap in existing literature regarding optimal exercise frequency for institutionalized populations. While two sessions per week have been associated with functional improvements, it remains unclear whether an additional weekly session provides significant incremental benefits. By isolating frequency as the primary variable, the trial addresses the need to define the minimum effective dose of structured exercise for enhancing physical activity, functional capacity, and reducing fall risk. Results are expected to inform tailored physical activity guidelines and implementation strategies in long-term care settings, balancing clinical efficacy with feasibility and safety constraints typical of institutional environments.