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J Siegler

Publications and source records attributed to J Siegler.

At least 19 recordsLinked to original sources

The application of soccer performance testing protocols to the non-elite player.

AIM: The application of performance testing for the evaluation of non-elite soccer players has received little attention. The purpose of this investigation was to use tests developed for elite soccer players to evaluate performance in non-elite soccer players and compare performance test results between elite (literature) and non-elite (data) players. METHODS: Thirteen male soccer players volunteered to participate. The tests included a treadmill VO2max test, 20 m sprint, vertical jump (VJ), 30 s Wingate cycle ergometer test, the Loughborough Intermittent Shuttle Test (LIST), and 2 20-m multi-stage shuttle runs to exhaustion (fatigue test). Actual VO2max (absolute and relative) scores were correlated with the estimated VO2max scores (fatigue test), 20 m sprint, VJ, and 30 s Wingate using a Pearson's product-moment correlation. A paired t-test was conducted on the fatigue test trials. RESULTS: Non-significant relationships were observed between actual VO2max scores and estimated VO2max from the fatigue test (absolute and relative terms). Non-significant relationships were also observed between peak and average power output (Wingate), 20 m sprint, and VJ. Mean heart rates (HRs) throughout the LIST was 165+/-7 bpm, which represented 88% of HRmax. CONCLUSIONS: The results of this study demonstrate that to elicit physiological differences between elite and non-elite players, assessment must include both an aerobic and anaerobic component.

Adult↗

[Frankfurt Vaccination Intervention Study--Friva].

The success of the recommendation of vaccinations on the occasion of school-beginner examinations is assessed. The feedback rate of the intervention group amounts to 65%. The recommended vaccinations were carried out at 60% (measles-mumps-rubella) up to 90% (tetanus).

Child↗

Fibrinogen metabolism in cyanoti congenital heart disease.

The metabolism and in vivo kinetics of fibrinogen labelled with radioactive iodine was studied in children with cyanotic congenital heart disease. The patients had a significantly lowered plasma fibrinogen pool, shortened fibrinogen half-life and increased fractional catabolic rate of fibrinogen compared with healthy children. The average plasma fibrinogen and absolute catabolic rate of fibrinogen did not differ from control values. The shortened fibrinogen half-life together with the correcting effect of anticoagulation with heparin indicated that fibrinogen was consumed by chronic disseminated intravascular coagulation. Inhibition of the fibrinolytic system with epsilon-aminocaproic acid in three cyanotic patients had no influence on the fibrinogen half-life in two of them but resulted in its prolongation in one patient.

Adolescent↗