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Percorrer por autor "Izquierdo, Mikel"

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  • Erratum to: Muscle Strength Matters Most for Risk of Falling Apart from Body Mass Index in Older Adults: A Mediated-Moderation Analysis
    Publication . Rodrigues, Filipe; Izquierdo, Mikel; Monteiro, Diogo; Jacinto, Miguel; Matos, Rui; Amaro, Nuno; Antunes, Raul; Teixeira, Diogo Santos
    2024-09-27Artigo científico Acesso aberto Ver mais
  • Muscle Strength Matters Most for Risk of Falling Apart from Body Mass Index in Older Adults: A Mediated-Moderation Analysis
    Publication . Rodrigues, Filipe; Izquierdo, Mikel; Monteiro, Diogo; Jacinto, Miguel; Matos, Rui; Amaro, Nuno; Antunes, Raul; Teixeira, Diogo Santos
    The primary objective of this study was to analyze the moderating effect of body mass index (BMI) on the association between lower body strength, agility, and dynamic balance, considering the mediating influence of lower body flexibility and aerobic endurance in community-dwelling older adults. This study included a sample of 607 community-dwelling older adults (female = 443; male = 164) aged between 60 and 79 years (M = 69.24; SD = 5.12). Participants had a mean body mass index of 28.33kg/m2 (SD = 4.45). In the mediation-moderation model, positive associations were found between lower body strength and lower body flexibility, aerobic endurance, and agility and dynamic balance (p < 0.05). As for the moderation effects and interactions, BMI was found to have a significant interaction with lower body strength on agility and dynamic balance (β = −.04, [−.06, −.03]), representing an R2-change of 0.04 (p <.001). Conditional direct effects were estimated at BMI scores of 23.9 (β = −.09, [−.15, −.03]), 27.7 (β = −.19, [−.24, −.14]), and 32.7 (β = −.33, [−.40, −.26]) kg/m2. Older adults with high levels of muscular strength tended to have shorter timed up-and-go test times, regardless of BMI. Also, individuals with lower levels of lower body strength were found to have longer timed up-and-go test times, and this relationship became more pronounced with increasing BMI.
    2024-09-10Artigo científico Acesso aberto Ver mais
  • Relative Contribution of Arms and Legs in 30 s Fully Tethered Front Crawl Swimming
    Publication . Morouço, Pedro, G.; Marinho, Daniel A.; Izquierdo, Mikel; Neiva, Henrique; Marques, Mário C.
    The relative contribution of arm stroke and leg kicking to maximal fully tethered front crawl swimming performance remains to be solved. Twenty-three national level young swimmers (12 male and 11 female) randomly performed 3 bouts of 30 s fully tethered swimming (using the whole body, only the arm stroke, and only the leg kicking). A load-cell system permitted the continuous measurement of the exerted forces, and swimming velocity was calculated from the time taken to complete a 50 m front crawl swim. As expected, with no restrictions swimmers were able to exert higher forces than that using only their arm stroke or leg kicking.
    2015Artigo científico Acesso aberto Ver mais