Percorrer por autor "Martins, Fernando"
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- Golf-Putting Performance in Skilled Golfers at Different Distances to the HolePublication . Dias, Gonçalo; Couceiro, Micael; Mendes, Pedro; Gomes, Ricardo; Mendes, Rui; Vaz, Vasco; Martins, Fernando; Gama, José; Castro, Maria AntónioGolf putting occurs under highly variable conditions. Therefore, adapting to different putting distances is a challenge that the golfer faces and understanding the variables underlying performance in this task is important. The main objective of this study was to analyse the golf-putting performance in skilled golfers at different distances to the hole. Fourteen highly skilled golfers, adult male and right-handed (41.5 ± 13.2 years with an average handicap of 2.3 ± 1.7) performed the golf putting on a natural grass green, completing a total of 120 randomly ordered trials, 30 trials at each of the four different practice conditions (1, 2, 3, and 4 m away from the hole). A smart engineered putter (InPutter) was used as the data acquisition instrument to record several process variables at 100 Hz. Results indicated that golf-putting distances constrained movement organisation variables in specific ways. For example, as the distance to the hole changes, so do the informational constraints, shaping how a golfer needs to regulate performance. We concluded that the effects of different golf-putting distances required the implementation of functional solutions uniquely adjusted to each player. Furthermore, the perception that the player withdrew from the properties of the context (e.g., distance to the hole) was important to adapt the golf-putting process variables (e.g., amplitude and duration of the movement, among others). All these factors led to a decisive influence on how the golfer hit the ball and adjusted his performance. A major implication of developing a better understanding of the role of performance in golf putting is that coaches and players should allow functional movement behaviours to emerge during practice.
- Oral Motricity in preschool children with speech sound disorders: preliminary studyPublication . Pós de Mina, Sónia; Martins, Fernando; Guimarães, IsabelIntroduction: Speech Sound Disorders (SSD) is a developmental disorder for which sensorimotor and cognitive-linguistic aspects contribute. These include perceptive capacity, phonological and articulatory representation of the language impairing the speech segments, and the phonotactic and prosodic elements, resulting in different degrees of intelligibility. Aim: Verify the existence of differences in oral motricity according to age and the diagnosis of SSD. Methods: Case-control study with 107 children with typical development and SSD matched for age (in months), between 4 and 5;11. The evaluation was carried out with the PAOF-2 (Protocolo de Avaliação OroFacial, versão 2) (Guimarães et al., 2021). The statistical analysis of the two domains of PAOF-2 (Structure and Mobility) was performed using the Mann- Whitney test. Results: There are no statistically significant differences between the groups in the structure domain at 4 (U=236.5, p=0.182) and 5 (U=344.5, p=0.578) years of age. In the mobility domain, children aged five years old with SSD have significantly lower performance than children without SSD in diadochokinetic oral movement (pá-tá-ká) (U=227.00 p=0.005). Preliminary data point to an evolution in the orofacial motricity of children with and without SSD, but children with SSD present a different evolution with a lower magnitude than children without SSD. All male children with SSD perform worse than female children. Conclusions: The performance of oral diadochokinesia in 5-year-old children with PSF is significantly lower than in 5-year- old children without PSF. The oromotor development pattern of children with PSF is different from that of children without PSF.
- Sistema de aquisição e registo de sinais biomédicos baseado numa plataforma de desenvolvimento open-source de baixo custoPublication . Jardan, Daniel; Gil, João; Martins, Fernando; Ferreira, Lino; Fonseca-Pinto, RuiEste artigo apresenta um sistema de aquisição e registo de sinais biomédicos baseado na plataforma desenvolvimento open-source Arduino. O sistema tem associado um cartão de memória para registo de dados, bem como um acelerómetro que indica a atividade/postura do paciente. É utilizado um módulo de comunicação Blue- tooth para ligação a um dispositivo móvel (smartphone e tablet) de forma a permitir a parametrização, o comando do sistema de aquisição e a monitorização em tempo real dos dados adquiridos. Estes dados foram usados para calcular o balanço vago-simpático associado a tarefas específicas do dia-a-dia.
- Somatotype and Body Composition of Normal and Dysphonic Adult SpeakersPublication . Franco, Débora; Fragoso, Isabel; Andrea, Mário; Teles, Júlia; Martins, FernandoSummary: Objective. Voice quality provides information about the anatomical characteristics of the speaker. The patterns of somatotype and body composition can provide essential knowledge to characterize the individuality of voice quality. The aim of this study was to verify if there were significant differences in somatotype and body composition between normal and dysphonic speakers. Study Design. Cross-sectional study. Methods. Anthropometric measurements were taken of a sample of 72 adult participants (40 normal speakers and 32 dysphonic speakers) according to International Society for the Advancement of Kinanthropometry standards, which allowed the calculation of endomorphism, mesomorphism, ectomorphism components, body density, body mass index, fat mass, percentage fat, and fat-free mass. Perception and acoustic evaluations as well as nasoendoscopy were used to assign speakers into normal or dysphonic groups. Results. There were no significant differences between normal and dysphonic speakers in the mean somatotype attitudinal distance and somatotype dispersion distance (in spite of marginally significant differences [P < 0.10] in somatotype attitudinal distance and somatotype dispersion distance between groups) and in the mean vector of the somatotype components. Furthermore, no significant differences were found between groups concerning the mean of percentage fat, fat mass, fat-free mass, body density, and body mass index after controlling by sex. Conclusion. The findings suggested no significant differences in the somatotype and body composition variables, between normal and dysphonic speakers.