Time is a primary classification parameter in alpine skiing competitions. In this study a measuring procedure and methodology were developed how to accurately retrieve gate-to-gate times using a high-end navigation system (GNSS). This allows a direct insight into intercourse or gate-to-gate time difference.
COBISS.SI-ID: 4109745
Despite the fact that the athletes in alpine skiing are classified according to time where the differences among competitors in can be in fractions of a second, in short sections (e.g., 1 to 4 gates) very larger differences can occur. It turns out that the time for determining the quality of skiing in a short section is not a good parameter because it is very strongly related to the entrance velocity, i.e. skiing before the inspected section. Therefore, we developed a new integral energy parameter: change in specific mechanical energy normalized by the entrance velocity, which directly defines the quality of skiing on a short section.
COBISS.SI-ID: 3856817
The aim of the study was to investigate the relationship between time to peak torque (TPT) of hamstrings and sprint ability. Thirty six healthy physical education students without previous injury underwent the measurements of the sprint times at 5, 10 and 20 meters using an infrared photocell. Hamstrings strength was tested concentrically at 240°/s using Biodex System 3 dynamometer. Linear regression was used to evaluate the influence of hamstrings relative strength and TPT on sprint times at 5, 10 and 20 meters. Hamstrings TPT significantly predicted the sprint times at 5, 10 and 20 meters Subjects with hamstrings TPT below 200 ms had significantly shorter sprint times at all sprint distances in comparison with subjects whose hamstrings TPT was above 200 ms.
COBISS.SI-ID: 4077489