Anthropometric dimensions do not enhance one repetition maximum prediction from the NFL-225 test in college football players.
The purpose of this study was to evaluate the contribution of anthropometric dimensions to improving the accuracy of repetitions-to-fatigue (RTF) using an absolute load of 225 lbs to predict 1 repetition maximum (1RM) bench press performance in college football players. Sixty-one players from an NCAA Division II team were evaluated for 1RM bench press performance, RTF using an absolute load of 225 lbs, and measured (5 skinfolds, 2 skeletal length, and 2 muscle circumferences). Anthropometric dimensions (percent fat, lean body mass, and arm cross-sectional areas) were derived at the conclusion of 8 weeks of heavy resistance training during the off-season. None of the anthropometric dimensions made a significant additional contribution to RTF (r = 0.96, SEE = 12.3 lbs) for predicting 1RM. Of the currently available NFL-225 prediction equations found in the literature nonsignificantly underestimated 1RM from RTF by an average of 1.1 lbs (+/-12.7 lbs), whereas 5 other RTF equations significantly overpredicted by 3.5-9.0 lbs (+/-12.2-14.1 lbs). Anthropometric dimensions neither reduced the error associated with prediction of 1RM bench press using the NFL-225 test in college football players nor do they explain why some players are significantly over- or underpredicted when using muscle endurance repetitions.
Human Performance Laboratory, Truman State University, Kirksville, Missouri 63501, USA. jmayhew@truman.edu
Jerry L
JL
Mayhew
Jeff A
JA
Jacques
John S
JS
Ware
Paul P
PP
Chapman
Michael G
MG
Bemben
Tom E
TE
Ward
Joseph P
JP
Slovak
D000293:Adolescent; D000328:Adult; D000886:Anthropometry / Q000379:methods; D049628:Body Size / Q000502:physiology*; D005538:Football / Q000502:physiology*; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D011237:Predictive Value of Tests; D012044:Regression Analysis; D013178:Sports Medicine / Q000295:instrumentation*; D013647:Task Performance and Analysis