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    The effects of rope or weighted rope jump training on strength, coordination and proprioception in adolescent female volleyball players
    (EDIZIONI MINERVA MEDICA, 2011) Ozer, D.; Duzgun, I.; Baltaci, G.; Karacan, S.; Colakoglu, F.
    Aim. The aim was to assess the effects of a 12-week "rope jumping" and "weighted rope jumping" training programs on functional parameters including multi-joint coordination and proprioception, strength, endurance in adolescent female volleyball players. Methods. Pretest posttest experimental design. Intervention: Weighted Rope Training group (N.=9; 15+/-1 years), Rope Training group (N.=9; 14.1+/-1.3 years) and Controls (N.=7; 14.4+/-1.3 years). Main Outcome Measures: Motor coordination, proprioception, strength and endurance of the lower extremities with concentric and eccentric performances in closed kinetic chain on multi joint system assessed by the Monitorized Squat system. Absolute average error (cm) and the standard deviation for coordination and proprioception, Peak Force (N), Total Work (Nm), Average Power (Nm/s), Maximal Speed for strength and endurance tests were calculated. Kruskal-Wallis and Mann Whitney U test were utilized. Results. Weighted rope jump group had significant decrease for the deviation results of coordination on the concentric and eccentric phases for both legs (P<0.05). Rope jump and weighted rope jump groups had significantly lower results on non visible second movement deviation (P<0.05). In strength tests, the difference was found for total work that there was difference on the post assessment within groups in favour of Weighted Rope Training group in comparison to controls (P<0.05). Weighted Rope Training and control groups improved in concentric maximal speed (P<0.05). Most significant changes occured on eccentric phaese of the endurance tests that peak force increased in Weighted Rope Training group (P<0.05). Conclusions. Adding rope jump to training programs improves joint repositioning and coordination. Weighted Rope Training group got greater gains for coordination and eccentric endurance parameters for lower extremities in a closed kinetic chain.
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    Evaluation of physical, physiological and some performance parameters of the Turkish elite orienteers
    (ELSEVIER SCIENCE BV, 2014) Colakoglu, T.; Er, F.; Ipekoglu, G.; Karacan, S.; Çolakoğlu, F. F.; Zorba, Ercan
    The aim of the study was to examine physical, physiological and some performance parameters of the elite orienteers in our country. 39 elite orienteers (20 female orienteers and 19 male orienteers) who joined national orienteering team and improvement camp and had at least two-year experience voluntarily participated in our study. It was seen that mean age for female orienteers was 16.35 +/- 2.18 years while it was 15.63 +/- 3.07 years for male orienteers. The participant orienteers' body weights, heights, resting heart rates, systolic / diastolic blood pressures, body mass index (BMI), body fat percentage, body's fat free mass (FFM), fat mass, body water, circumference and diameters were measured. Performance tests were 20 in. shuttle run, vertical jump, 20 m. sprint, T-test, hand grip strength-back strength, standing long jump, sit-up, push-up, sit-reach, reaction time, flamingo balance and star balance tests. Somatotype characteristics of the orienteers were determined through Heath-Carter method. Means and standard deviations of the participant orienteers were found using SPSS package software. It was found out that the participant female orierrteers' body fat percentage was 17.92 +/- 6.34 % while the participant male orienteers' body fat percentage was 11.09 +/- 3.28 %. As for the participant female orienteers' somatotype means; endomorphy was 4.40 +/- 1.19, mesomorphy was 3.12 +/- 1.29 and ectomorphy was 3.48 +/- 1.18 whereas endomorph)/ was 2.58 +/-.84, mesomorphy was 3.86 +/-.85 and ectomorphy was 4.49 +/- 1.15 for the participant male orienteers. It was found out that the participant female orienteers' leg strength was 104.60 +/- 40.47 kg, T-test was 12.11 +/- 6.81 and mean VO2max was 43.66 +/- 4.83 (ml.kg-1.min-1) while the participant male orienteers' leg strength was 168.39 +/- 73.22 kg;T-test was 11.47 +/- 1.04 and VO2max mean was 52.46 +/- 5.28 (ml.kg-1.min-1). It is very important to investigate body structures and performance limits of the athletes in orienteering sport which is a new and developing sportive activity and requires such physical capacities as high level of endurance, strength and speed. On the other hand; performance tests including physical and antropometric characteristics of the orienteers play a key role in determining abilities. Therefore; we are of the opinion that our study will make contribution to the early period orienteer-recruitment and the prospective studies on this field. (C) 2014 The Authors. Published by Elsevier Ltd.