this study aimed to investigate the relationship between race horse breed and the frequency of limb injuries through the time of training and racing. the study population consisted of 4042 thoroughbred and 2553 arabian horses raced at warsaw race track, from 2000 to 2008. among these horses, 94 thoroughbreds and 32 arabians had different limb injuries. based on the achieved results, it is possi...

The purpose of this randomized study was to measure the influence of vitamin C (n = 15 runners) compared with placebo (n = 13 runners) supplementation on oxidative and immune changes in runners competing in an ultramarathon race. During the 7-day period before the race and on race day, subjects ingested in randomized, double-blind fashion 1,500 mg/day vitamin C or placebo. On race day, blood sa...

The authors applied insights from the group-value theory of procedural justice to investigate minority students’ disengagement of self-esteem from academic outcomes. African American college students completed the race-based rejection sensitivity (RS-race) questionnaire. The students were asked to write a position essay on a current topic. They were randomly assigned to complete a demographic f...

The purpose of the present study was to investigate cardiac damage biomarkers after a triathlon race in elite and non-elite athlete groups. Fifteen healthy men participated in the study. Based on performance, they were divided into elite athlete group (EG: n=7) and non-elite athlete group (NEG: n=8). Participants' blood samples were obtained during four periods: before, immediately, 2 hours and...

introduction: to compare the cleaning effectiveness of k3 and race niti rotary systems with k-flexo file instruments during the preparation of curved canals in extracted human teeth. materials and methods: a total of 50 root canals of mandibular and maxillary molars with curvatures ranging between 25º and 35 º were divided in three groups of 15 each and 5 as negative control groups. canals were...

Background and Aim:Root canal preparation with rotary instruments may cause dentinal cracks leading to tooth fracture. The aim of this study was to compare three different rotary systems ProTaper, RaCe and Niti Tee on formation of dentinal cracks following root canal preparation. Materials and Methods: In this experimental study, 50 extracted mandibular first molars were selected. Teeth having ...