Examinando por Autor "Roche Seruendo, Luis E."
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Ítem Absolute reliability and validity of the OptoGaitTM system to measure spatiotemporal gait parameters during running(2020) García Pinillos, Felipe; Latorre Román, Pedro A.; Chicano Gutiérrez, José M.; Ruiz Malagón, Emilio J.; Párraga Montilla, Juan A.; Roche Seruendo, Luis E."The biomechanics of walking and running, in both ground and treadmill conditions, have been extensively analysed and important differences have been reported. Despite some previous studies having examined the validity and reliability of the OptoGait™ system for measuring gait characteristics during walking, no previous works have determined the reliabil- ity and validity of this system while running on a treadmill. Therefore, this study aimed to determine the absolute reliabil- ity (within-subject variation) and evaluate the concurrent validity of the OptoGait™ system for measuring spatiotemporal variables while running at a comfortable speed by comparing data with a highly accurate system of measuring those para- meters (i.e. video analysis at 1000 Hz). Forty-nine endurance runners performed a running protocol on a treadmill at a comfortable speed. Two systems were used to collect data: OptoGait™ system and high-speed video analysis at 1000 Hz. The coefficient of variation (CV) was calculated as a measure of absolute reliability. The OptoGait™ system reported a CV range between 2.2% and 11.4% for spatiotemporal parameters, while the video analysis showed a CV range between 0.02% and 9.9%. To determine concurrent validity, intra class correlation coefficients (ICC) and pairwise comparisons of means (t-test) were calculated between data from both systems. Although the paired t-test demonstrated significant dif- ferences between systems, a high level of agreement (ICC . 0.89) was obtained in spatiotemporal parameters between systems. When compared to a high-speed video analysis at 1000 Hz, the results indicate that the OptoGait™ system is a reliable and valid tool to measure spatiotemporal gait characteristics while running on a treadmill at a comfortable speed."Ítem Do age and sex influence on functional movement in school-age children?(FEDERACIÓN ESPAÑOLA ASOC DOCENTES EDUCACIÓN FÍSICA-FEADEF, C CABO VIDIO 27, SAN JAVIER, MURCIA, 30730, SPAIN, 2019) García Pinillos, Felipe; Párraga Montilla, Juan A.; Roche Seruendo, Luis E.; Delgado Floody, Pedro; Martínez Salazar, Cristian P.; Latorre Román, PedroThe aim of this study was to determine the influence of age and sex on the functional movement in Spanish primary school children. A group of 172, 6-11 years old children (83 girls and 89 boys), participated in this study. The main outcome measures were the Functional Movement ScreenTM (FMS), sex and chronological age of children. The ANCOVA (BMI as a covariate) revealed significant differences between age groups (p=0.003) but no between-sex differences (pe»0.05) in FMS total score. As for individual FMS tests, significant differences between age groups (p<0.05) were found in the in-line lunge and the shoulder mobility tests; whereas, according to sex, significant differences (p<0.05) were found in the in-line lunge test (under 10 years old group) and the push-up test (under 12 group). The stepwise linear regression analysis revealed BMI as a primary predictor of FMS total score in school age children, but with a significant additional contribution from age (R2= 0.206, p<0.001), whereas the sex was excluded from this model (p=0.097). In conclusion, the results reported in this study suggest that age is a moderate determinant of FMS scores, whereas sex is not a determinant in this battery test in school age children (6-11 years old). This study also highlights that BMI is the primary predictor of FMS total score in school age children, but with a significant additional contribution from age, whereas the sex was excluded from this model.Ítem How Does Power During Running Change when Measured at Different Time Intervals?(Georg Thieme Verlag KG Stuttgart · New York, 2019) García Pinillos, Felipe; Soto Hermoso, Victor M.; Latorre Román, Pedro A.; Párraga Montilla, Juan A.; Roche Seruendo, Luis E.This study aimed to examine how the power output changes while running at a continuous comfortable velocity on a motorized treadmill by comparing running power averaged during different time intervals. Forty-nine endurance runners performed a running protocol on a treadmill at self-selected comfortable velocity. Power output (W) was estimated with the Stryd™ power meter, and it was examined over six recording intervals within the 3-min recording period: 0–10 s, 0–20 s, 0–30 s, 0–60 s, 0–120 s and 0–180 s. The ANOVAs showed no significant differences in the magnitude of the power output between the recording intervals (p = 0.276, F = 1.614, partial Eta2 = 0.155). An almost perfect association was also observed in the magnitude of the power output between the recording intervals (ICC ≥ 0.999). Bland-Altman plots revealed no heteroscedasticity of error for the power output in any of the between- intervals comparisons (r2 < 0.1), although longer recording intervals yield smaller systematic bias, random errors, and narrower limits of agreement for power output. The results show that power data during running, as measured through the Stryd™ system, is a stable metric with negligible differences, in practical terms, between shorter (i. e., 10, 20, 30, 60 or 120 s) and longer recording intervals (i. e., 180 sÍtem How does the slope gradient affect spatiotemporal parameters during running? Influence of athletic level and vertical and leg stiffness(Elseviver, 2019-02) García Pinillos, Felipe; Latorre Román, Pedro A.; Ramírez Campillo, Rodrigo; Párraga Montilla, Juan A.; Roche Seruendo, Luis E.Background The current evidence leaves certain questions unanswered, including whether well-trained athletes adapt to different slope gradients in the same way as amateurs, and whether stiffness influences spatiotemporal adaptations during uphill running. Research question This study aimed to determine the effect of different slope gradients (0%–11%) on spatiotemporal gait characteristics during running, taking into account the influence of athletic level, vertical and leg stiffness. Methods Male endurance runners (12 amateurs, 10 highly-trained) performed a running test on a motorized treadmill. The running velocity was set at 12 km/h, and participants completed six different running conditions (0, 3, 5, 7, 9 and 11% gradients). Spatiotemporal parameters were measured using the OptoGait system. Vertical (Kvert) and leg (Kleg) stiffness were calculated according to the sine-wave method. Results A 2 (amateur; highly-trained) × 6 (running conditions) ANOVA found no significant between-group differences in spatiotemporal parameters at any gradient (P ≥ 0.05); however, significant Kvert and Kleg differences (P < 0.05) were found within both groups with increasing gradients. Stepwise linear regression analysis showed that Kleg was strongly associated with contact time (R2 = 0.797, P < 0.001), whereas Kvert was associated with spatiotemporal adaptations to different slope gradients (R2 = 0.547, P = 0.002). Significance An increased slope gradient (0–11%) at a given running velocity (12 km.h−1) caused spatiotemporal adaptations (i.e., increased CT and SF and decreased FT, SL and SA) regardless of the athletic level of the runner, although a non-significant trend differentiated the adaptations between the amateur and highly-trained groups. The results also indicated that leg stiffness plays a key role in the characteristics of spatiotemporal gait during level running, whereas vertical stiffness is strongly associated with spatiotemporal adaptations when running uphill.