Escribiendo la reconquista: la consolidación de la memoria histórica en el Portugal del siglo XII

Durante el siglo XII los portugueses experimentaron un alto nivel de agitación política y social, así como la amenaza militar planteada por los estados vecinos fue agravada por un reto cultural que provenía de la Europa latino-cristiana. En un esfuerzo por darle a su propia sociedad un contexto, los portugueses dirigieron sus miradas a un pasado lejano. Una serie de autores que trabajaron en Portugal durante este periodo nos han dado su visión particular de la invasión islámica del siglo VIII, de la consiguiente Reconquista y de la evolución de la relación entre cristianos y musulmanes en la Península Ibérica. En ese esfuerzo por contextualizar su propio mundo, estos autores han proporcionado al lector moderno una visión excepcional de una sociedad medieval de frontera que estaba inmersa en un proceso de rápidos cambios

MANIPULATING TIME: DIFFERENCES IN PEAK KNEE MOMENTS WHEN SIDESTEPPING TO TEMPORALLY CONSTRAINED QUASI-REALISTIC SCENARIOS

This study aimed to analyse how planning time effects peak knee valgus (PKVM) and internal rotation (PKIRM) moments using real-time (RT) and above real-time (ART) game-like video clips. 12 male Australian rules football players completed a modified sidestepping (SS) movement assessment. PKVM and PKIRM were measured across the weight acceptance phase of planned (PSS) and four unplanned SS conditions, increasing in video playback speed (UP100, UP125, UP150, UP175). No significant differences were found for PKVM or PKIRM between any SS conditions, however, the coefficient of variation in PKVM increased as the temporal constraints of the unplanned tasks increase. This study suggests that while mean group differences in PKVM may not be obvious, increased individual subject variation is evident as planning time decreases

REDUCING ACL INJURY RISK BY STANDING STILL WITH ZERO IMPACT PERCEPTUAL (ZIP) TRAINING!

This study assessed novel zero-impact perceptual (ZIP) training, in which there is cognitive but no physical workload, in reducing biomechanical risk factors associated with anterior cruciate ligament injury. Tri-planar knee moments in amateur Australian rules footballers (n=16) were calculated during evasive sidestepping of 3D-projected opponents in 1-on-1, 2-on-2 and 3-on-3 game-based situations, pre and post intervention training. Video-only (VO) and Cueing (Q) training groups verbally evaded opponents in 8 sessions over 4 weeks. Cueing incorporated an additional task of counting visual cues within the scene. Training groups showed reductions in peak valgus and internal rotation moments, with greater reductions observed in Q training relative to controls. Results suggest that ZIP training can reduce ACL injury risk without impacting physical workload

Reducing anterior cruciate ligament injury risk factors by training perception: How vital is maintaining the perception-action coupling?

This study investigated the effect of maintaining perception-action coupling during a 4-week perceptual training program aiming to reduce biomechanical risk factors associated with ACL injury. Kinetic (valgus and internal rotation knee moments) and neuromuscular (total knee muscle activation and directed co-contraction ratios) variables were calculated during evasive sidestepping of 3D-projected opponents in 1-on-1, 2-on-2 and 3-on-3 game-based situations pre and post-intervention training. An additional transfer scenario was assessed post-intervention. Twenty-six amateur Australian Rules footballers were allocated to control (C), uncoupled (U) or coupled (PA) groups. Participants completed biweekly perceptual training containing 48 trials requiring a verbal (uncoupled) or running sidestep (coupled) response while counting the number of attentional cues displayed. Training groups showed no reductions in peak valgus and internal rotation moments, however, a small decrease in peak valgus moments was observed in the transfer condition. Coupled training displayed significant group differences in medial-lateral co-contraction ratios from controls. No changes in muscle activation patterns pre-post ARF were observed, however C and UC groups redirected co-contraction ratios laterally in the transfer condition. Results suggest that attentional cueing perceptual training with a coupled response may have a beneficial impact on kinetic ACL injury risk factors and maintain muscle activation levels associated with decreased ACL injury risk

Comparative Histologic Analysis of Coronally Advanced Flap With and Without Collagen Membrane for Root Coverage

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142033/1/jper0779.pd

A Novel Decisionâ Making Process for Tooth Retention or Extraction

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141780/1/jper0476.pd

The Effect of Plateletâ Rich Plasma on the Coronally Advanced Flap Root Coverage Procedure: A Pilot Human Trial

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141653/1/jper1768.pd

Letter to the Editor: Authors’ Response

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141379/1/jper1202a.pd