Allometric Scaling of Upper-Body Strength in Three Divisions of American College Football Players

2015 ◽  
Vol 47 ◽  
pp. 119
Author(s):  
Willaim F. Brechue ◽  
Jerry L. Mayhew ◽  
J. Bryan Mann ◽  
Richard M. Schumacher ◽  
Abbie E. Smith-Ryan
2009 ◽  
Vol 21 (1) ◽  
pp. 75-82 ◽  
Author(s):  
Bulent Agbuga ◽  
John Slovak ◽  
Ferman Konukman ◽  
Ilker Yilmaz

Comparison of Division II College Offensive and Defensive Football Players' Upper Body Strength Across One Repetition Maximum Test and The NFL-225 TestThe purpose of this study was to evaluate the effectiveness of predicting actual one repetition maximum (1RM) bench press strength from the National Football League (NFL) 225-test in college football players. Forty-one Division II college football players participated in this study. Participants' upper body strength scores were expressed relative to body weight and results were compared across both tests. Mayhew et al. equation was used to predict 1RM. A repeated measures ANOVA and one-way ANOVA was used to compare the groups. The present study found that the Mayhew equation overestimated relative upper body strength of college football players, while high degree of reliability was found between the actual 1RM and the NFL-225 tests [Wilks λ = 0.43, F (1,40) = 53.07, p = 0.000, Eta-squared = 0.57] and the correlation between these two tests was very high (r = 0.94, p<0.001). The present study also found that defensive players were stronger than offensive players when scores were expressed relative to body weight. The finding of this study indicates that the NFL-225 test's applicability may not be identical for all college players. This study elucidates some of the difficulties associated with predicting 1RM. However, while it is difficult to predict 1RM, testing using sub-maximal loads are far less time consuming especially when they involve a large number of athletes. The results of this study should facilitate coaches in choosing the most appropriate strength testing procedure for their programs.


1995 ◽  
Vol 27 (Supplement) ◽  
pp. S211 ◽  
Author(s):  
S. C. Hui ◽  
M. T. Mahar ◽  
A. S. Jackson

1999 ◽  
Vol 13 (2) ◽  
pp. 99-105
Author(s):  
KEN JONES ◽  
GARY HUNTER ◽  
GLENN FLEISIG ◽  
RAPHAEL ESCAMILLA ◽  
LAWRENCE LEMAK

2015 ◽  
Vol 29 (3) ◽  
pp. 826-834 ◽  
Author(s):  
Johann C. Bilsborough ◽  
Kate G. Greenway ◽  
David A. Opar ◽  
Steuart G. Livingstone ◽  
Justin T. Cordy ◽  
...  

2009 ◽  
Vol 23 (3) ◽  
pp. 756-764 ◽  
Author(s):  
Jamie J Ghigiarelli ◽  
Elizabeth F Nagle ◽  
Fredric L Gross ◽  
Robert J Robertson ◽  
James J Irrgang ◽  
...  

Author(s):  
Barry Gerber ◽  
Anita E. Pienaar ◽  
Ankebe Kruger

Puberty and the onset of menarche influences the motor performance of girls. However, the magnitude of these influences during varying maturity status, is not clear. This longitudinal study over two years aimed to investigate differences in motor fitness between early and late developing girls based on pre- and post-menarche status. A convenience sample (n = 58) of girls aged 13.51 ± 3.51, divided by means of the Status Quo method into pre (n = 13) and post-menarche (n = 45) groups, was used. Motor fitness was tested once annually by standardized protocols. Basic statistics, independent t-testing and a repeated measures ANOVA with a post hoc Bonferonni correction were used (p < 0.05 = statistical significance). Effect sizes were determined by Cohen’s d-values. Only explosive upper body strength differed significantly between groups during baseline, favoring post-menarche girls. Initially, post-menarche girls showed advantages in hand-eye coordination and speed (p > 0.05) with pre-menarche girls performing better in agility and explosive leg strength (p > 0.05). At 15.51 years, no significant, between-group differences were found. Pre-menarche girls surpassed post-menarche girls in hand-eye coordination and 0–40 m speed and post-menarche girls displayed higher explosive leg and upper body strength scores (p > 0.05). Our data show that the potential to excel in sport based on motor capabilities can only be accurately estimated 1–2 years after reaching menarche.


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