TIME COURSE OF CHANGES IN STRADDLE JUMP AND VERTICAL JUMP PERFORMANCE AFTER ACUTE STATIC STRETCHING IN ARTISTIC GYMNASTS

The aim of the present study was to examine the time course of changes of the effects of static stretching on straddle jump, vertical jump height and flexibility after performing dynamic movements in artistic gymnasts. The study was participated by 14 female artistic gymnasts aged between 9 and 14. Vertical jump heights were measured using the New Test 2000 testing device. Flexibility measurement was performed with sit and reach flexibility test. Artistic gymnastics-specific jump movement was evaluated looking at the angle between lower extremities using the Dartfish motion analysis program. Baseline measurements taken before the standard warm-up and the measurements taken after static stretching were assessed. Four sets of gymnastics moves each lasting two minutes were performed. The tests were repeated after each set. Static stretching was found to affect vertical jump performance significantly. Significant differences were found between Jump(2) and Jump(1) (p=0.01), Jump(2) and Jump(3) (p=0.03), Jump2 and Jump(4) (p=0.01), Jump(2) and Jumop(5) (p=0.004), and Jump(2) and Jump6 (p=0.009). In flexibility-related changes, significant differences were found between Reach(2) and Reach(3) (p=0.03), and Reach(2) and Reach(6) (p=0.006). Static stretching was found to have no significant effect on the lower extremity straddle jump degree. In conclusion, although the static stretching protocol reduced vertical jump performance significantly, it did not affect the artistic gymnastics-specific jump move. The negative effects of static stretching on jump height approached the baseline value approximately 4 minutes later

TIME COURSE OF CHANGES IN STRADDLE JUMP AND VERTICAL JUMP PERFORMANCE AFTER ACUTE STATIC STRETCHING IN ARTISTIC GYMNASTS

AbstractThe aim of the present study was to examine the time course of changes of the effects of static stretching on straddle jump, vertical jump height and flexibility after performing dynamic movements in artistic gymnasts. The study was participated by 14 female artistic gymnasts aged between 9 and 14. Vertical jump heights were measured using the New Test 2000 testing device. Flexibility measurement was performed with sit and reach flexibility test. Artistic gymnastics-specific jump movement was evaluated looking at the angle between lower extremities using the Dartfish motion analysis program. Baseline measurements taken before the standard warm-up and the measurements taken after static stretching were assessed. Four sets of gymnastics moves each lasting two minutes were performed. The tests were repeated after each set. Static stretching was found to affect vertical jump performance significantly. Significant differences were found between Jump2&nbsp;and Jump1&nbsp;(p=0.01), Jump2&nbsp;and Jump3&nbsp;(p=0.03), Jump2&nbsp;and Jump4&nbsp;(p=0.01), Jump2&nbsp;and Jumop5&nbsp;(p=0.004), and Jump2&nbsp;and Jump6&nbsp;(p=0.009). In flexibility-related changes, significant differences were found between Reach2&nbsp;and Reach3&nbsp;(p=0.03), and Reach2&nbsp;and Reach6&nbsp;(p=0.006). Static stretching was found to have no significant effect on the lower extremity straddle jump degree. In conclusion, although the static stretching protocol reduced vertical jump performance significantly, it did not affect the artistic gymnastics-specific jump move. The negative effects of static stretching on jump height approached the baseline value approximately 4 minutes later.</p

Arterial disease and vascular access in diabetic patients

Purpose: There are conflicting reports on the effects of diabetes on the outcomes of hemodialysis access procedures. While some found no negative effects, others reported deleterious effects of diabetes on vascular access outcomes. Why is there concern about diabetes and related vascular problems on vascular access procedures? What are the differences of diabetic patients and their vasculature from that of nondiabetics? Do they have an effect on hemodialysis vascular access outcomes? We will try to find answers to these questions in light of the available evidence