Bohdanna T. Zazulak

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BACKGROUND Female athletes are at significantly greater risk of anterior cruciate ligament (ACL) injury than male athletes in the same high-risk sports. Decreased trunk (core) neuromuscular control may compromise dynamic knee stability. HYPOTHESES (1) Increased trunk displacement after sudden force release would be associated with increased knee injury(More)
STUDY DESIGN Controlled laboratory study. OBJECTIVES To determine whether gender differences in electromyographic (EMG) activity of hip-stabilizing muscles are present during single-leg landing. BACKGROUND Numerous factors may explain the greater rate of anterior cruciate ligament (ACL) injuries in female athletes. However, gender differences in hip(More)
Due to the rising number of patients affected by osteoarthritis (OA), appropriate management decisions for minimizing pain and improving physical function for patients with OA are important. Hyaluronic acid (HA) knee injections have become a common tool for the management of OA of the knee, and the number of randomized controlled trials on the efficacy and(More)
Deficits in dynamic neuromuscular control of the knee may contribute to the higher incidence of anterior cruciate ligament (ACL) injury in female athletes. There is evidence that neuromuscular training alters muscle firing patterns, as it decreases landing forces, improves balance, and reduces ACL injury incidence in female athletes. The purpose of this(More)
OBJECTIVE To determine whether proprioceptive impairments exist in patients with low back pain (LBP). We hypothesized that patients with LBP would exhibit larger trunk proprioception errors than healthy controls. DESIGN Case-control study. SETTING University laboratory. PARTICIPANTS 24 patients with nonspecific LBP and 24 age-matched healthy controls.(More)
BACKGROUND In sports involving pivoting and landing, female athletes suffer knee injury at a greater rate than male athletes. HYPOTHESES Proprioceptive deficits in control of the body's core may affect dynamic stability of the knee. Female, but not male, athletes who suffered a knee injury during a 3-year follow-up period would demonstrate decreased core(More)
Female athletes are at a 4- to 6-fold increased risk of anterior cruciate ligament (ACL) injury compared with male athletes. There are several medical, emotional and financial burdens associated with these injuries. Sex hormones may be involved in the ACL injury disparity, with potential associations reported between phases of the menstrual cycle and ACL(More)
Several theories have been proposed to explain the 3- to 6-fold gender difference in the incidence of anterior cruciate ligament injuries. One potential theory for the increased incidence is based on gender-related hormonal differences between men and women, especially after puberty and the onset of menses in the female athlete. The purpose of this(More)
Our purpose was to determine if females demonstrate decreased hamstrings to quadriceps peak torque (H/Q) ratios compared to males and if H/Q ratios increase with increased isokinetic velocity in both sexes. Maturation disproportionately increases hamstrings peak torque at high velocity in males, but not females. Therefore, we hypothesised that mature(More)
Recent prospective evidence supports the hypothesis that impaired trunk control is a contributing factor to sports injuries of the spine as well as to segments of the kinetic chain. The current concepts regarding neuromuscular control of trunk stability are best described from a systems engineering perspective. In the analysis of current neuromuscular(More)