Sentences with phrase «rotational head acceleration»

Data from the sensors were transmitted wirelessly to a computer on the sideline and processed to measure both the linear and rotational head acceleration resulting from each impact.

Not exact matches

(For reference, a person nodding his head up and down as fast as possible produces a rotational acceleration of approximately 180 rads / sec2).

Duma's ratings system has come under fire for not adequately simulating real - world impacts, but he has tweaked his equation and testing so that rotational acceleration — which occurs during blows that cause the head to turn — will be taken into account in the ratings that will be released next year.

They found a strong correlation between the white matter changes and the number of head hits with a peak rotational acceleration exceeding 4500 rad / sec2 and the number of head hits with a peak rotational acceleration exceeding 6,000 rad / sec2, and an especially strong correlation where the number of the former exceeded 30 - 40 for the season, and the number of the latter exceeded 10 - 15 for the season.

Indeed, the 2014 University of Rochester study [23] suggests that, «rather than monitor total head hits, as [was initially suggested [by Sports Legacy Institute in its much publicized Hit Count program], it may be more effective to monitor those hits that are most likely to produce [white matter] changes, which Bazarian and his colleagues found were when the number of helmet impacts resulting in a peak rotational acceleration of 4500 rads / sec2exceeded 30 - 40 for the season, and when the number of helmet impacts resulting in a peak rotational acceleration.6000 rads / sec2 exceeded 10 - 15 for the season.

Their goal was to determine under what circumstances high - magnitude head impacts (linear or rotational accelerations measuring more than 40g, which are more likely to cause concussions than lower - magnitude impacts) occur and how representative practice activities are of game activities with respect to these head impacts.

Brain injury can also occur from acceleration / deceleration movement of the head and neck, as well as rotational movement of the head.