Changes over 70 Weeks in Body Weight and Performance Variables in College-Aged Women 15s Rugby Players Using In-Person- and Online-Training Supervision
(
), Abstract
This longitudinal study investigated the potential enhancement of one physical and nine performance variables of New Zealand Rugby-Otago Rugby Football Union Academy college-age women student-athletes (NZORFUSA) using in-person- and non-video online-training (online) supervision.
Recruited NZORFUSA followed a periodised training protocols over 70-weeks. During weeks 1–35 and weeks 53–70 (in-season), the NZORFUSA received 25-h of in-person supervision, participated in 15-h of team practice and game play each week. Over weeks 36–52 (off-season), due to the NZORFUSA returning home over the college summer break, NZORFUSA received online supervision. Performance assessments occurred on weeks 1, 31, 53 and 70. During each testing session, body weight, acceleration, anaerobic endurance, lower-body power, speed, and upper-body strength performance data were collected. Data from weeks 1–70 are presented in this paper; weeks 1–31 and 1–53 data were previously published.
Over 70-weeks of in-person-, online-, and again in-person supervision, mean data showed a decrease in body weight [effect size, Cohen's d = 0.12, trivial; 95% confidence interval (CI): 29.4–127.7] and showed improvements in performance variables (large effect size, d = 1.49–4.33), including lower-body power (CI: 39.9–47.5), upper-body bench press strength (CI: 29.7–132.3) and anaerobic endurance; for the latter performance variable, to complete the 40 m repeat sprints needs less effort (CI: 81.3–95.5) with concurrent lower fatigue level being achieved (CI: 8.08–9.77).
Physical and performance enhancement for Academy women student-athletes with in-person, online, and again in-person supervision over 70-weeks is attainable. Future longitudinal research is needed to assist performance enhancement for this cohort.
References
Argus CK, Gill N, Keogh JWL. Characterization of the differences in strength and power between different levels of competition in rugby union athletes. J Strength Cond Res. 2012;26(10):2698–704. https://doi.org/10.1519/JSC.0b013e318241382a.
Atkinson G, Nevill AM. Selected issues in the design and analysis of sport performance research. J Sports Sci. 2001;19(10):811–27. https://doi.org/10.1080/026404101317015447.
Austin D, Gabbett T, Jenkins D. The physical demands of Super 14 rugby union. J Sci Med Sport. 2011;14(3):259–63. https://doi.org/10.1016/j.jsams.2011.01.003.
Baechle TR, Earle RW. Essentials of strength training and conditioning NSCA. 2nd ed. Champaign: Human Kinetics; 2000.
Baker D. The effects of an in-season of concurrent training on the maintenance of maximal strength and power in professional and college-aged rugby league football players. J Strength Cond Res. 2001;15(2):172–7. https://doi.org/10.1519/1533-4287(2001)015%3c0172:TEOAIS%3e2.0.CO;2.
Baker D, Newton RU. Comparison of lower body strength, power, acceleration, speed, agility, and sprint momentum to describe and compare playing rank among professional rugby league players. J Strength Cond Res. 2008;22(1):153–8. https://doi.org/10.1519/JSC.0b013e31815f9519.
Bourdon PC, Cardinale M, Murray A, Gastin P, Kellmann M, Varley MC, Gabbett TJ, Coutts AJ, Burgess DJ, Gregson W, Cable NT. Monitoring athlete training loads: consensus statement. Int J Sports Physiol Perform. 2017;12(Suppl 2):161–70. https://doi.org/10.1123/IJSPP.2017-0208.
Cahill N, Lamb K, Worsfold P, Headey R, Murray S. The movement characteristics of English premiership rugby union players. J Sports Sci. 2013;31(3):229–37. https://doi.org/10.1080/02640414.2012.727456.
Campos GE, Luecke TJ, Wendeln HK, Toma K, Hagerman FC, Murray TF, Ragg KE, Ratamess NA, Kraemer WJ, Staron RS. Muscular adaptations in response to three different resistance-training regimens: specificity of repetition maximum training zones. Eur J Appl Physiol. 2002;88(1–2):50–60. https://doi.org/10.1007/s00421-002-0681-6.
Cohen J. Statistical power analysis for the behavioral sciences. 2nd ed. Hillsdale, NJ: Lawrence Erlbaum Assoc; 1988.
Coutts A, Murphy AJ, Dascombe BJ. Effect of direct supervision of a strength coach on measures of muscular strength and power in young rugby league players. J Strength Cond Res. 2004;18(2):316–23. https://doi.org/10.1519/00124278-200405000-00021.
Cronin JB, Hansen KT. Strength and power predictors of sports speed. J Strength Cond Res. 2005;19(2):349–57. https://doi.org/10.1519/14323.1.
Duthie G, Pyne D, Hooper S. Applied physiology and game analysis of rugby union. Sports Med. 2003;33(13):973–91. https://doi.org/10.2165/00007256-200333130-00003.
Duthie G, Pyne D, Hooper S. Time motion analysis of 2001 and 2002 super 12 rugby. J Sports Sci. 2005;23(5):523–30. https://doi.org/10.1080/02640410410001730188.
Engel SG, Johnson C, Powers PS, Crosby RD, Wonderlich SA, Wittrock DA, Mitchell JE. Predictors of disordered eating in a sample of elite division Ⅰ college athletes. Eat Behav. 2003;4(4):333–43. https://doi.org/10.1016/S1471-0153(03)00031-X.
Enoksen E, Staxrud M, Tønnessen E, Shalfawi SAI. The effect of supervised strength training on young elite male soccer players’ physical performance. Serb J Sports Sci. 2013;7(4):173–9.
Gabbett TJ. Physiological and anthropometric characteristics of junior rugby league players over a competitive season. J Strength Cond Res. 2005;19(4):764–71. https://doi.org/10.1519/R-16804.1.
Garfinkel PE, Moldofsky H, Garner DM. The heterogeneity of anorexia nervosa. Bulimia as a distinct subgroup. Arch Gen Psychiatr. 1980;37(9):1036–40. https://doi.org/10.1001/archpsyc.1980.01780220074008.
Gibson C, Hindle C, McLay-Cooke R, Slater J, Brown R, Smith B, Baker D, Healey P, Katherine Black. Affiliations expand. Body image among elite rugby union players. J Strength Cond Res. 2019;33(8):2217–22. https://doi.org/10.1519/JSC.0000000000002312.
Glaister M, Howatson G, Lockey RS, Abraham CS, Goodwin JE, McInnes G. Familiarization and reliability of multiple sprint running performance indices. J Strength Cond Res. 2007;21(3):857–9. https://doi.org/10.1519/R-20336.1.
Greenleaf C, Petrie TA, Carter J, Reel JJ. Female collegiate athletes: prevalence of eating disorders and disordered eating behaviors. J Am Coll Health. 2009;57(5):489–96. https://doi.org/10.3200/JACH.57.5.489-496.
Hene NM, Bassett SH. Changes in the physical fitness of elite women’s rugby union players over a competition season. S Afr J Sports Med. 2013;25(2):47–50. https://doi.org/10.7196/SAJSM.371.
Heradstveit O, Hysing M, Nilsen SA, Bøe T. Symptoms of disordered eating and participation in individual- and team sports: a population-based study of adolescents. Eat Behav. 2020. https://doi.org/10.1016/j.eatbeh.2020.101434.
Hopkins WG, Hawley JA, Burke L. Design and analysis of research on sport performance enhancement. Med Sci Sports Exerc. 1999;31(3):472–85. https://doi.org/10.1097/00005768-199903000-00018.
Kovacs MS, Pritchett R, Wickwire PJ, Green JM, Bishop P. Physical performance changes after unsupervised training during the autumn/spring semester break in competitive tennis players. Br J Sports Med. 2007;41(11):705–10. https://doi.org/10.1136/bjsm.2007.035436.
Lombard WP, Durandt JJ, Masimla H, Green M, Lambert MI. Changes in body size and physical characteristics of South African under-20 rugby union players over a 13-year period. J Strength Cond Res. 2015;29(4):980–8. https://doi.org/10.1519/JSC.0000000000000724.
Mazzetti SA, Kraemer WJ, Volek JS, Duncan ND, Ratamess NA, Gómez AL, Newton RU, Häkkinen K, Fleck SJ. The influence of direct supervision of resistance training on strength performance. Med Sci Sports Exerc. 2000;32(6):1175–84. https://doi.org/10.1097/00005768-200006000-00023.
Mero A, Komi PV, Gregor R. Biomechanics of sprint running. Sports Med. 1992;13:376–92. https://doi.org/10.2165/00007256-199213060-00002.
Milligan B, Pritchard M. The relationship between gender, type of sport, body dissatisfaction, self esteem and disordered eating behaviors in division Ⅰ athletes. Online J Sport Psychol. 2006;8(1):32–46.
Moir G, Button C, Glasister M, Stone MH. Influence of familiarization on the reliability of vertical jump and acceleration sprinting performance in physically active men. J Strength Cond Res. 2004;18(2):276–80. https://doi.org/10.1519/R-13093.1.
Morel B, Rouffet DM, Bishop DJ, Rota SJ, Hautier CA. Fatigue induced by repeated maximal efforts is specific to the rugby task performed. Int J Sports Sci Coach. 2015;10(1):11–20. https://doi.org/10.1260/1747-9541.10.1.11.
Mountjoy M, Sundgot-Borgen J, Burke L, Carter S, Constantini N, Lebrun C, Meyer N, Sherman R, Steffen K, Budgett R, Ljungqvist A. The IOC consensus statement: beyond the female athlete triad-relative energy deficiency in sport (RED-S). Br J Sports Med. 2014;48(7):491–7. https://doi.org/10.1136/bjsports-2014-093502.
Nesser TW, Latin RW, Berg K, Prentice E. Physiological determinants of 40-meter sprint performance in young male athletes. J Strength Cond Res. 1996;10(4):263–7. https://doi.org/10.1519/00124278-199611000-00010.
Nuzzo JL. The national football league scouting combine from 1999 to 2014: normative reference values and an examination of body mass normalization techniques. J Strength Cond Res. 2015;29(2):279–89. https://doi.org/10.1519/JSC.0000000000000755.
Quarrie KL, Handcock P, Waller AE. The New Zealand rugby injury and performance project. Ⅲ. Anthropometric and physical performance characteristics of players. Br J Sports Med. 1995;29(4):263–70. https://doi.org/10.1136/bjsm.30.1.53.
Rishiraj N, Niven B. Physical and performance changes in rugby union female student-athletes over 31- and 52-weeks. Athens J Sports. 2018;5:119–212. https://doi.org/10.30958/ajspo.5-3-2.
Roberts SP, Trewartha G, Higgitt RJ, El-Abd J, Stokes KA. The physical demands of elite English rugby union. J Sports Sci. 2008;26(8):825–33. https://doi.org/10.1080/02640410801942122.
Schweizer G, Furley P. Reproducible research in sport and exercise psychology: the role of sample sizes. Psychol Sport Exerc. 2016;23:114–22. https://doi.org/10.1016/j.psychsport.2015.11.005.
Scott W, Stevens J, Binder-Macleod SA. Human skeletal muscle fiber type classifications. Phys Ther. 2001;81:1810–6. https://doi.org/10.1093/ptj/81.11.1810.
Seo DI, Kim E, Fahs CA, Rossow L, Young K, Ferguson SL, Thiebaud R, Sherk VD, Loenneke JP, Kim D, Lee M-K, Choi K-H, Bemben DA, Bemben MG, So W-Y. Reliability of the one-repetition maximum test based on muscle group and gender. J Sci Med Sport. 2012;11(2):221–5.
Smart DJ, Gill ND. Effects of an off-season conditioning program on the physical characteristics of adolescent rugby union players. J Strength Cond Res. 2013;27(3):708–13. https://doi.org/10.1519/JSC.0b013e31825d99b0.
Spencer M, Bishop D, Dawson B, Goodman C. Physiological and metabolic responses of repeated-sprint activities: specific to field-based team sports. Sports Med. 2005;35(12):1025–44. https://doi.org/10.2165/00007256-200535120-00003.
Sundgot-Borgen J. Risk and trigger factors for the development of eating disorders in female elite athletes. Med Sci Sports Exerc. 1994;26(4):414–9. https://doi.org/10.1249/00005768-199404000-00003.
Tanner R, Gore CJ. Physiological tests for elite athletes. Australian sports commission. 2nd ed. Sydney: Human Kinetics; 2012.
Wilmore JH, Behnke AR. Predictability of lean body weight through anthropometric assessment in college men. J Appl Physiol. 1968;25(4):349–55. https://doi.org/10.1152/jappl.1968.25.4.349.
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