TY - JOUR
T1 - Physical differences between forwards and backs in American collegiate rugby players
AU - La Monica, Michael B.
AU - Fukuda, David H.
AU - Miramonti, Amelia A.
AU - Beyer, Kyle S.
AU - Hoffman, Mattan W.
AU - Boone, Carleigh H.
AU - Tanigawa, Satoru
AU - Wang, Ran
AU - Church, David D.
AU - Stout, Jeffrey R.
AU - Hoffman, Jay R.
N1 - Publisher Copyright:
© 2016 National Strength and Conditioning Association.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - La Monica, MB, Fukuda, DH, Miramonti, AA, Beyer, KS, Hoffman, MW, Boone, CH, Tanigawa, S, Wang, R, Church, DD, Stout, JR, and Hoffman, JR. Physical differences between forwards and backs in American collegiate rugby players. J Strength Cond Res 30(9): 2382-2391, 2016 - This study examined the anthropometric and physical performance differences between forwards and backs in a championship-level American male collegiate rugby team. Twenty-five male rugby athletes (mean ± SD; age 20.2 ± 1.6 years) were assessed. Athletes were grouped according to position as forwards (n 13) and backs (n 12) and were evaluated on the basis of anthropometrics (height, weight, percent body fat [BF%]), cross-sectional area (CSA), muscle thickness (MT), and pennation angle (PA) of the vastus lateralis (VL), maximal strength (1 repetition maximum [1RM] bench press and squat), vertical jump power, midthigh pull (peak force [PF] and peak rate of force development [PRFD]), maximal aerobic capacity (Vo 2 peak), agility (pro agility, T test), speed (40-m sprint), and a tethered sprint (peak velocity [PV], time to peak velocity, distance covered, and step rate and length). Comparisons between forwards and backs were analyzed using independent t-tests with Cohen's d effect size. Forwards were significantly different from backs for body weight (90.5 ± 12.4 vs. 73.7 ± 7.1 kg, p < 0.01; d 1.60), BF% (12.6 ± 4.2 vs. 8.8 ± 2.1%, p ≤ 0.05; d 1.10), VL CSA (38.3 ± 9.1 vs. 28.7 ± 4.7 cm 3, p < 0.01; d 1.26), 1RM bench press (121.1 ± 30.3 vs. 89.5 ± 20.4 kg, p ≤ 0.05; d 1.17), 1RM squat (164.6 ± 43.0 vs. 108.5 ± 31.5 kg, p < 0.01; d 1.42), PF (2,244.6 ± 505.2 vs. 1,654.6 ± 338.8 N, p < 0.01; d 1.32), PV (5.49 ± 0.25 vs. 5.14 ± 0.37 m·s -1, p ≤ 0.05; d 1.04), and step length (1.2 ± 0.1 vs. 1.1 ± 0.1 m, p ≤ 0.05; d 0.80). Vo 2 peak was significantly (p ≤ 0.05, d -1.20) higher in backs (54.9 ± 3.9 ml·kg·min -1) than in forwards (49.4 ± 4.4 ml·kg·min -1). No differences in agility performance were found between position groups. The results of this study provide descriptive information on anthropometric and performance measures on American male collegiate championship-level rugby players offering potential standards for coaches to use when developing or recruiting players.
AB - La Monica, MB, Fukuda, DH, Miramonti, AA, Beyer, KS, Hoffman, MW, Boone, CH, Tanigawa, S, Wang, R, Church, DD, Stout, JR, and Hoffman, JR. Physical differences between forwards and backs in American collegiate rugby players. J Strength Cond Res 30(9): 2382-2391, 2016 - This study examined the anthropometric and physical performance differences between forwards and backs in a championship-level American male collegiate rugby team. Twenty-five male rugby athletes (mean ± SD; age 20.2 ± 1.6 years) were assessed. Athletes were grouped according to position as forwards (n 13) and backs (n 12) and were evaluated on the basis of anthropometrics (height, weight, percent body fat [BF%]), cross-sectional area (CSA), muscle thickness (MT), and pennation angle (PA) of the vastus lateralis (VL), maximal strength (1 repetition maximum [1RM] bench press and squat), vertical jump power, midthigh pull (peak force [PF] and peak rate of force development [PRFD]), maximal aerobic capacity (Vo 2 peak), agility (pro agility, T test), speed (40-m sprint), and a tethered sprint (peak velocity [PV], time to peak velocity, distance covered, and step rate and length). Comparisons between forwards and backs were analyzed using independent t-tests with Cohen's d effect size. Forwards were significantly different from backs for body weight (90.5 ± 12.4 vs. 73.7 ± 7.1 kg, p < 0.01; d 1.60), BF% (12.6 ± 4.2 vs. 8.8 ± 2.1%, p ≤ 0.05; d 1.10), VL CSA (38.3 ± 9.1 vs. 28.7 ± 4.7 cm 3, p < 0.01; d 1.26), 1RM bench press (121.1 ± 30.3 vs. 89.5 ± 20.4 kg, p ≤ 0.05; d 1.17), 1RM squat (164.6 ± 43.0 vs. 108.5 ± 31.5 kg, p < 0.01; d 1.42), PF (2,244.6 ± 505.2 vs. 1,654.6 ± 338.8 N, p < 0.01; d 1.32), PV (5.49 ± 0.25 vs. 5.14 ± 0.37 m·s -1, p ≤ 0.05; d 1.04), and step length (1.2 ± 0.1 vs. 1.1 ± 0.1 m, p ≤ 0.05; d 0.80). Vo 2 peak was significantly (p ≤ 0.05, d -1.20) higher in backs (54.9 ± 3.9 ml·kg·min -1) than in forwards (49.4 ± 4.4 ml·kg·min -1). No differences in agility performance were found between position groups. The results of this study provide descriptive information on anthropometric and performance measures on American male collegiate championship-level rugby players offering potential standards for coaches to use when developing or recruiting players.
KW - anthropometrics
KW - athletic performance
KW - power
KW - speed
KW - sports
KW - strength
UR - http://www.scopus.com/inward/record.url?scp=84985031201&partnerID=8YFLogxK
U2 - 10.1519/JSC.0000000000001388
DO - 10.1519/JSC.0000000000001388
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C2 - 26937771
AN - SCOPUS:84985031201
SN - 1064-8011
VL - 30
SP - 2382
EP - 2391
JO - Journal of Strength and Conditioning Research
JF - Journal of Strength and Conditioning Research
IS - 9
ER -