Dynamic Analysis of Custom-Fitted Functional Knee Braces: EMG and Brace Migration during Physical Activity

1999 ◽  
Vol 8 (2) ◽  
pp. 109-122 ◽  
Author(s):  
John P. Miller ◽  
James C. Vailas ◽  
Ronald V. Croce ◽  
Robert Confessore ◽  
Kerriann Catlaw
Keyword(s):  
Physical Activity ◽  
Dynamic Analysis ◽  
Motor Unit ◽  
Ice Hockey ◽  
Thigh Muscle ◽  
Median Frequency ◽  
Knee Brace ◽  
Hockey Players ◽  
Hard Shell ◽  
Knee Braces

This study examined the effects of (a) functional knee braces on thigh muscle EMG and (b) physical activity and leg shape on knee brace migration. Ten female college ice hockey players were fitted with a strap-secured functional knee brace (SSB) and a hard-shell functional knee brace with strapping. Participants performed a side-step maneuver, a treadmill ran, and an obstacle course. Significant differences were noted in hamstring and quadriceps EMG median frequency (mfEMG) while wearing the SSB compared with the control condition. Significant downward shifts were noted in hamstring mfEMG for both braces when compared with the control condition. There was greater brace migration for the obstacle course for both brace types. No relation was found between leg shape and the amount of migration. This study suggests that custom-fitted functional knee braces alter the motor unit recruitment patterns of the thigh musculature during physical activity and that they do not migrate significantly during physical activity.

scholarly journals Evaluation of knee braces in Swedish ice hockey players.

1991 ◽  
Vol 25 (3) ◽  
pp. 159-161 ◽  
Author(s):  
Y Tegner ◽  
R Lorentzon
Keyword(s):  
Ice Hockey ◽  
Hockey Players ◽  
Knee Braces

scholarly journals Physical activity and concussion risk in youth ice hockey players: pooled prospective injury surveillance cohorts from Canada

BMJ Open ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. e022735 ◽  
Author(s):  
Tracy A Blake ◽  
Patricia K Doyle-Baker ◽  
Brian L Brooks ◽  
Luz Palacios-Derflingher ◽  
Carolyn A Emery
Keyword(s):  
Public Health ◽  
Physical Activity ◽  
Sport Participation ◽  
Exercise Physiology ◽  
Health Agency ◽  
Injury Surveillance ◽  
Ice Hockey ◽  
Study Entry ◽  
Hockey Players ◽  
The Impact

ObjectiveTo examine the association between meeting physical activity (PA) volume recommendations and concussion rates in male ice hockey players aged 11–17 years.DesignPooled prospective injury surveillance cohort data from the 2011–2012, 2013–2014 and 2014–2015 youth ice hockey seasons.ParticipantsMale Alberta-based Pee Wee (aged 11–12 years), Bantam (aged 13–14 years) and Midget (aged 15–17 years) ice hockey players participating in any of the three cohorts were eligible (n=1726). A total of 1208 players were included after the exclusion criteria were applied (ie, players with new/unhealed injuries within 6 weeks of study entry, missing 6-week PA history questionnaires, missing game and/or practice participation exposure hours, players who sustained concussions when no participation exposure hours were collected).Outcome measuresDependent variable: medically diagnosed concussion. Independent variable: whether or not players’ self-reported history of PA (ie, hours of physical education and extracurricular sport participation) met the Canadian Society of Exercise Physiology and Public Health Agency of Canada recommendation of one hour daily during the 6 weeks prior to study entry (ie, 42 hours or more).ResultsThe PA volume recommendations were met by 65.05% of players who subsequently sustained concussions, and 75.34% of players who did not sustain concussions. The concussion incidence rate ratios (IRR) reflect higher concussion rates in players who did not meet the PA volume recommendations vs. players who met the PA volume recommendations among Pee Wee players (IRR 2.94 95% CI 1.30 to 6.64), Bantam players (IRR 2.18, 95% CI 1.21 to 3.93) and non-elite players aged 11–14 years (IRR 2.45, 95% CI 1.33 to 4.51).Conclusion and relevanceThe concussion rate of players who did not meet the Canadian PA volume recommendations was more than twice the concussion rate of players who met recommendations among male Pee Wee players, Bantam players and non-elite level players. Further exploration of the impact of public health PA recommendations in a sport injury prevention context is warranted.

Physical activity and concussion risk in male youth ice hockey players

2017 ◽  
Vol 51 (11) ◽  
pp. A19.1-A19
Author(s):  
Tracy A Blake ◽  
Willem H Meeuwisse ◽  
Patricia K Doyle-Baker ◽  
Brian L Brooks ◽  
Luz Palacios-Derflingher ◽  
...  
Keyword(s):  
Physical Activity ◽  
Ice Hockey ◽  
Male Youth ◽  
Hockey Players
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