BACKGROUND Injury and illness surveillance during high-level youth sports events is an important first step in health prevention and caretaking of the young elite athletes. AIM To analyse injuries and illnesses that occurred during the 10 days 2nd Youth Olympic Winter Games (YOG), held in Lillehammer 2016. METHODS We recorded the daily occurrence (or non-occurrence) of injuries and illnesse...

BACKGROUND In a previous study, we concluded that a safety helmet can reduce the risk for head injury by 60%. Other studies reported similar effects, resulting in a general recommendation to wear a helmet while skiing or snowboarding. AIM To determine the effect of the expected increased helmet wear on the risk of head injury one decade after the recommendation. METHODS Ski patrols reported...

Suppose you want to start a new hobby: skiing. In the ski shop, they give you the options to either rent skis or buy skis. If you know a priori how many days you will be skiing, then you can easily compute whether you should rent or buy right from the first day. This is an example of offline problems—all information is given at once, even future information. In the real world, you would not kno...

In the aerials event of freestyle skiing, athletes perform three somersaults with up to five twists. This study investigated the twisting limits of such movements using a computer simulation model of aerial movement. The abilities of various asymmetrical arm and hip techniques to produce twist during flight were investigated using 10 simulations to maximise twist and allow reorientation prior t...

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The purpose of this study was to estimate cruciate ligament forces in Alpine skiing during a movement that has been associated with anterior cruciate ligament (ACL) tears. Resultant knee joint forces and moments were obtained from two skiers during a World Cup Downhill race using an inverse dynamics approach and a 2-D bilaterally symmetric system model. It was found that ACL forces were typical...

Aims: Experience morphology of acceleration signals, extract useful information and classify time periods into defined techniques during cross-country skiing. Method: Three Norwegian cross-country skiers ski skated one lap in the 2011 world championship sprint track as fast as possible with 5 accelerometers attached to their body and equipment. Algorithms for detecting ski/pole hits and leaves ...

Increased metabolic activity in muscle secondary to excessive muscle activity during the uptake phase and shortly before FDG injection is a known phenomenon. We present FDG PET/CT findings in a young male, known case of carcinoma maxilla His scan showed diffuse increased metabolic activity in multiple skeletal muscle groups. There was history of unaccustomed, strenuous sports activity of skiing...

The purpose of this study was to evaluate and compare various power output estimates and estimate anaerobic energy supply during treadmill roller-skiing. Roller-skiing sprint time-trial performance on a treadmill was compared to numerical simulations of three different power output estimates; non-inertial power estimate (NIP), inertial power estimate (IP), and optimization power estimate (OP). ...