PMID- 26203735
OWN - NLM
STAT- MEDLINE
DCOM- 20160216
LR  - 20181202
IS  - 1533-4287 (Electronic)
IS  - 1064-8011 (Linking)
VI  - 29
IP  - 8
DP  - 2015 Aug
TI  - A Biomechanical Comparison of the Long Snap in Football Between High School and 
      University Football Players.
PG  - 2148-66
LID - 10.1519/JSC.0000000000000903 [doi]
AB  - Limited previous research was located that examined the technique of the long 
      snap in football. The purpose of the study was to compare the joint movements, 
      joint velocities, and body positions used to perform fast and accurate long snaps 
      in high school (HS) and university (UNI) athletes. Ten HS and 10 UNI subjects 
      were recruited for filming, each performing 10 snaps at a target with the fastest 
      and most accurate trial being selected for subject analysis. Eighty-three 
      variables were measured using Dartfish Team Pro 4.5.2 video analysis software, 
      with statistical analysis performed using Microsoft Excel and SPSS 16.0. Several 
      significant comparisons to long snapping technique between groups were noted 
      during analysis; however, the body position and movement variables at release 
      showed the greatest number of significant differences. The UNI athletes 
      demonstrated significantly higher release velocity and left elbow extension 
      velocity, with significantly lower release height and release angle than the HS 
      group. Total snap time (release time + total flight time) was determined to have 
      the strongest correlation to release velocity for the HS group (r = -0.915) and 
      UNI group (r = -0.918). The study suggests HS long snappers may benefit from less 
      elbow flexion and more knee flexion in the backswing (set position) to increase 
      release velocity. University long snappers may benefit from increased left elbow 
      extension range of motion during force production and decreased shoulder flexion 
      at critical instant to increase long snap release velocity.
FAU - Chizewski, Michael G
AU  - Chizewski MG
AD  - 1Faculty of Physical Education and Recreation, University of Alberta, Edmonton, 
      Alberta, Canada; and 2Faculty of Kinesiology and Recreation Management, 
      University of Manitoba, Winnipeg, Manitoba, Canada.
FAU - Alexander, Marion J L
AU  - Alexander MJ
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - J Strength Cond Res
JT  - Journal of strength and conditioning research
JID - 9415084
SB  - IM
MH  - Adolescent
MH  - Athletic Performance/*physiology
MH  - Biomechanical Phenomena
MH  - Elbow Joint/physiology
MH  - Football/*physiology
MH  - Humans
MH  - Knee Joint/physiology
MH  - Male
MH  - Movement/*physiology
MH  - Range of Motion, Articular
MH  - *Schools
MH  - Shoulder Joint/physiology
MH  - Universities
MH  - Young Adult
EDAT- 2015/07/24 06:00
MHDA- 2016/02/18 06:00
CRDT- 2015/07/24 06:00
PHST- 2015/07/24 06:00 [entrez]
PHST- 2015/07/24 06:00 [pubmed]
PHST- 2016/02/18 06:00 [medline]
AID - 00124278-201508000-00011 [pii]
AID - 10.1519/JSC.0000000000000903 [doi]
PST - ppublish
SO  - J Strength Cond Res. 2015 Aug;29(8):2148-66. doi: 10.1519/JSC.0000000000000903.