Smith, AM

The goal of sports injury research is to improve understanding of injuries in a specific sport in order to facilitate prevention. Comprehension of epidemiology principles is necessary to design research protocols which are both accurate and pragmatic. Common pitfalls in sports epidemiology include selection bias, detection bias, transfer bias, recall bias, susceptibility bias, and confounding. Calculation of an injury rate requires precise measurement of the number of events (numerator) and the population-at-risk (denominator). Viable strategies for determining the incidence and characteristics of injuries and for observing outcome after an intervention in the sport of ice hockey include prospective cohort observational and interventional analyses.

Studying goalies, who play a key position in hockey requires examining psychophysiologic variables and their relationship to performance during games when the outcome is important [15]. This investigation tested all three aspects of emotion (subjective, physiologic changes, and performance). Nine male goalies completed questionnaires and provided salivary cortisol before, during, and after each game. Heart rate (ECG signal) was integrated with the goalie's performance video. Goalies rated on Likert Scales; headaches, stomach aches, insomnia, nervousness, and awareness of heart pounding. Data from 16 games were obtained. Of nine, two goalies provided data on three games each; one goalie was classified as a responder and the other a non-responder, based on salivary cortisol levels (SCL). The responder's SCL increased 572% between baseline and post-period assessments, whereas SCL in the non-responder increased 50% above baseline. The responder's SCL increased 8 times baseline when he faced 16 shots in a period. The responder goalie's game heart rates (HRs) were 160,152, and 167 beats per minute (bpm) and the non-responder's HRs were 147, 132, and 142 bpm for three games. Game performance was similar for both goalies.

Abstract Studying goalies, who play a key position in hockey requires examining psychophysiologic variables and their relationship to performance during games when the outcome is important [15]. This investigation tested all three aspects of emotion (subjective, physiologic changes, and performance). Nine male goalies completed questionnaires and provided salivary cortisol before, during, and after each game. Heart rate (ECG signal) was integrated with the goalie's performance video. Goalies rated on Likert Scales; headaches, stomach aches, insomnia, nervousness, and awareness of heart pounding. Data from 16 games were obtained. Of nine, two goalies provided data on three games each; one goalie was classified as a responder and the other a non-responder, based on salivary cortisol levels (SCL). The responder's SCL increased 572 % between baseline and post-period assessments, whereas SCL in the non-responder increased 50 % above baseline. The responder's SCL increased eight times baseline when he faced 16 shots in a period. The responder goalie's game heart rates (HRs) were 160, 152, and 167 beats per minute (bpm) and the non-responder's HRs were 147, 132, and 142 bpm for three games. Game performance was similar for both goalies.

Abstract In the sport of ice hockey, the incidence of injury has been investigated at multiple levels of participation based on collective player exposure, which assumes equal playing time among participants. However, playing time varies enormously between individual players on a given team because of variability in the number and length of shifts. Individual player monitoring, although laborintensive, more accurately identifies risk factors for sustaining injuries. Specific player exposure data are necessary for detailed analysis of factors such as style of play, illegal activities, equipment, player size, and officiating. In addition, prospective, uniform and accurate collection of exposure data may permit meaningful comparison of injury rates between levels of participation in ice hockey and also among different sports. Refinement of data collection tools that determine individual player injury exposure will increase the power of the denominator and facilitate prevention of ice hockey injuries.

Abstract The purpose of this investigation was to examine the components of intimidation in ice hockey and to determine their effects on players, coaches, and referees. In a pilot test, hockey coaches (N = 17) from three levels of participation were invited to an informal, exploratory symposium to assess their opinions on the role of intimidation in ice hockey. The following themes emerged: a) coaches' behavior and expectations, b) observable behavior, c) player's perceived role, and d) sociological factors. A preliminary intimidation model was developed. A survey including 80 open-ended questionnaires designed to stimulate discussion on the definition of intimidation, methods used to intimidate, and factors perceived as intimidating, was distributed to players (N = 66), coaches (N = 8), and referees (N = 6). The data were analyzed using qualitative methods [1,2] and intimidation was defined. Results support a theoretical model, which serves as a point of departure for future research and visually depicts the components of intimidation and their interactions.