Effects of a 12-week yoga intervention on postural sway in rugby union players

Main Article Content

Tilak Raj
Catherine Elliot
Michael J. Hamlin

Abstract

In an attempt to reduce the risk of injury that accompanies poor balance, many strength and conditioning coaches and trainers incorporate balance and postural control training into players’ training regimes. However, relatively few balance interventions involve yoga. Therefore, the purpose of this study was to evaluate the effect of a modified yoga programme on postural sway in rugby union players. Twenty-nine male rugby union players, (19 ± 1.3 years old, mean ± SD) were randomly assigned to two groups: a yoga group (YG, n =15), which practiced yoga for one hour, two times a week alongside their regular rugby training, and a control group (CG, n =14), which only participated in their standard rugby training. Postural sway was measured during various 30s balance activities at baseline (pre-season) and at the end of the 12-week playing season (post-season) on a force platform. The yoga group showed a significantly reduced sway signal in the 2-legged eyes closed balance test in the antero-posterior (-109.7% ± 82.9 mean ± 95% CI, p<0.005) and medial-lateral (-115.5% ± 92.1 p<0.005) directions. However, no significant between-group change was found in the 1-legged eyes closed or 1 or 2-legged eyes open balance tests. Results suggest that practising yoga may reduce postural sway in specific directions which may improve balance in rugby union players.

Article Details

How to Cite
1.
Tilak Raj, Elliot C, Hamlin M. Effects of a 12-week yoga intervention on postural sway in rugby union players. Arch AHS [Internet]. 2020 Dec. 29 [cited 2024 May 21];32(3):13-21. Available from: https://he01.tci-thaijo.org/index.php/ams/article/view/244181
Section
Original article
Author Biographies

Catherine Elliot , Department of Tourism, Sport & Society, Lincoln University, New Zealand.

Senior Lecturer,

Faculty of Environment, Society and Design,

Department of Tourism, Sport & Society, Lincoln University, New Zealand.

Michael J. Hamlin, Department of Tourism, Sport & Society, Lincoln University, New Zealand.

Associate Professor, Faculty of Environment, Society and Design, Department of Tourism, Sport & Society, Lincoln University, New Zealand.

References

Tokashiki T, Muratani A, Kimura Y, Muratani H, Fukiyama K. Sudden death in the general population in Okinawa: Incidence and causes of death. Jpn Circ J 1999; 63: 37-42.

Gervacio-Domingo G, Punzalan FE, Amarillo ML, Dans A. Sudden unexplained death during sleep occurred commonly in the general population in the Philippines: A sub study of the national nutrition and health survey. J Clin Epidemiol 2007; 60: 567-71.

Tungsanga K, Sriboonlue P. Sudden unexplained death syndrome in north-east Thailand. Int J Epidemiol 1993; 22: 81-7.

Priori SG, Aliot E, Blomstrom-Lundqvist C, Bossaert L, Breithardt G, Brugada P, et al. Task Force on Sudden Cardiac Death, European Society of Cardiology. Summary of recommendations. Ital Heart J Suppl 2002; 3: 1051-65.

Campuzano O, Beltran-Alvares P, Iglesias A, Scornik F, Perez G, Brugada R. Genetics and cardiac channelopathies. Genet Med 2010; 12: 260-7.

Nademanee K, Veerakul G, Nimmannit S, Chaowakul V, Bhuripanyo K, Likittanasombat K, et al. Arrhythmogenic marker for the sudden unexplained death syndrome in Thai men, Circulation 1996; 96: 2595-600.

Vatta M, Dumaine R, Varghese G, Richard TA, Shimizu W, Aihara N, et al. Genetic and biophysical basis of sudden unexplained nocturnal death syndrome (SUNDS), a disease allelic to Brugada syndrome. Hum Mol Genet 2002; 11: 337-45.

Sangwatanaroj S, Yanatasneejit P, Sunsaneewitayakul B, Sitthisook S. Linkage analyses and SCN5A mutations screening in five sudden unexplained death syndrome (Lai-tai) families. J Med Assoc Thail 2002; 85: S54-61.

Makarawate P, Chaosuwannakit N , Vannaprasaht S, Sahasthas D, Koo SH, Lee EJD, et al. SCN5A Genetic Polymorphisms Associated With Increased Defibrillator Shocks in Brugada Syndrome. J Am Heart Assoc 2017; 6(6): e005009.

Pitiwararom R, Vongpaisarnsin K, Hoonwijit U. SCN5A gene exome sequencing profile in sudden unexplained nocturnal death syndrome in Thai population. Chula Med J 2019; 63: 111-8.

Yanatatsaneejit P. (2001). Detection of SCN5Agene mutation and linkage analysis study in SCN5A, KCND2 and KCND3 gene in sudden unexplained death syndrome families. M.Sc. Thesis, Medical Sciences, Chulalongkorn University, TH.

Chen Q, Kirsch GE, Zhang D, Genetic basis and molecular mechanism for idiopatic ventricular fibrillation. Nature 1998; 392: 293-6.

Kapplinger JD, Tester DJ, Alders M, Benito B, Berthet M, Brugada J, et al. An international compendium of mutations in the SCN5A- encoded cardiac sodium channel in patients referred for Brugada syndrome genetic testing. Heart Rhythm 2010; 7: 33-46.

Antzelevitch C, Pollevick GD, Coideiro JM, Casis O, Sanguinetti M.C, Aizawa Y, et al. Loss of function mutations in the cardiac calcium channel underlie a new clinical entity characterized by ST segment elevation, short QT intervals, and sudden cardiac death. Circulation 2007; 115: 442-9.

Schultz D, Mikala G, Yatani A, Engle D B, IIes D E, Segers B, et al. Cloning, chromosomal localization, and functional expression of the alpha 1 subunit of the L-type voltage- dependent calcium channel from normal human heart. Proc Natl Acad Sci U S A 1993; 90(13): 6228-32.

Kim S, Cho CH, Geum D, Lee HJ. Association of CACNA1C Variants with Bipolar Disorder in the Korean Population. Psychiatry Investig 2016; 13(4): 453-7.

Chen J, Sun Y, Liu X, Li J. Identification of a novel mutation in the CACNA1C gene in a Chinese family with autosomal dominant cerebellar ataxia. BMC Neurol 2019; 19 (1): 157.

Splawski I, Timothy KW, Sharpe LM, Decher N, Kumar P, Bloise R, et al. Cav1.2 calcium channel dysfunction causes a multisystem disorder including arrhythmia and autism. Cell 2004; 119: 19–31.

Barrett CF, Tsien RW. The Timothy syndrome mutation differentially affects voltage- and calcium-dependent inactivation of CaV1.2 L-type calcium channels. Proc Natl Acad Sci U S A 2008; 105(6): 2157-62.

Fukuyama M, Wang Q, Kato K, Ohno S, Ding WG, Toyoda F, et al. Long QT syndrome type 8: novel CACNA1C mutations causing QT prolongation and variant phenotypes. Europace 2014; 16: 1828-37.

Burashnikov E, Pfeiffer R, Barajas-Martinez H, Delpón E, Hu D, Desai M, et al. Mutations in the cardiac L-type calcium channel associated with inherited J-wave syndromes and sudden cardiac death. Heart Rhythm 2010; 7(12): 1872-82.

Liu X, Shen Y, Xie J, Bao H, Cao Q, Wan R, et al. A mutation in the CACNA1C gene leads to early repolarization syndrome with incomplete penetrance: A Chinese family study. PLoS ONE 2017; 12(5): 1-18.

Tatsanavivat P, Chiravatkul A, Klungboonkrong, Chaisiri S, Jarerntanyaruk L, Munger RG, et al. Sudden and unexplained deaths in sleep (Lai tai) of young men in rural northeastern Thailand. Int J Epidemiol 1992; 21: 904-10.

Srettabunjong S, Sudden Unexplained Nocturnal Death Syndrome: Epidemiological and Morphological Characteristics in Thai Autopsy Cases. J Forensic Sci 2019; 64(3): 773-7.

Suktitipat B, Sathirareuangchai S, Roothumnong E, Thongnoppakhun W, Wangkiratikant P, Vorasan N, et al. Molecular investigation by whole exome sequencing revealed a high proportion of pathogenic variants among Thai victims of sudden unexpected death syndrome. PLoS One 2017; 12(7): e0180056.

Zhang L, Tester DJ, Lang D, Chen Y, Zheng J, Gao R, et al. Does sudden unexplained nocturnal death syndrome remain the autopsy-negative disorder: a gross, microscopic, and molecular autopsy investigation in Southern China. Mayo Clin Proc 2016; 91: 1503-14.

Zheng J, Huang E, Tang S, Wu Q, Huang L, Zhang D, et al. A case control study of sudden unexplained nocturnal death syndrome in the southern Chinese Han population. Am J Forensic Med Pathol 2015; 36: 39-43.

Chen Z, Mu J, Chen X. Sudden unexplained nocturnal death syndrome in Central China (Hubei): a 16-year retrospective study of autopsy cases. Medicine 2016; 95: e2882.

Zheng J, Zheng D, Su T, Cheng J. Sudden unexplained nocturnal death syndrome: the hundred years’ enigma. J Am Heart Assoc 2018; 7(5): e007837.

Valladares EM, Eljammal SM, Motivala S, Ehlers CL, Irwin MR. Sex differences in cardiac sympathovagal balance and vagal tone during nocturnalsleep. Sleep Med 2008; 9: 310-6.

Cheng J, Makielski C J, Yuan P, Shi N, Zhou F, Ye B, et al. Sudden unexplained nocturnal death syndrome in southern China: epidemiological survey and SCN5A gene screening. Am J Forensic Med Pathol 2011; 32(4): 359-63.

Charoenpan P, Muntarbhorn K, Boongird P, Puavilai G, Ratanaprakarn R, Indraprasit S, et al. Nocturnal physiological and 15 biochemicalchanges in sudden unexplained death syndrome: a preliminary report of a case control study.Southeast. Asian J Trop Med Public Health 1994; 25: 335-40.

Steinhaus DA, Vittinghoff E, Moffatt E, Hart AP, Ursell P, Tseng ZH. Characteristics of sudden arrhythmic death in a diverse, urban community. Am Heart J 2012; 163: 25-31.

Sutphin BS, Boczek NJ, Barajas-Martínez H, Hu D, Ye D, Tester DJ, et al. Molecular and Functional Characterization of Rare CACNA1C Variants in Sudden Unexplained Death in the Young. Congenit Heart Dis 2016; 11(6): 683-92.

Risgaard B, Jabbari R, Refsgaard L, Holst AG, Haunsø S, Sadjadieh A, et al. High prevalence of genetic variants previously associated with Brugada syndrome in new exome data. Clin Genet 2013: 84(5): 489-95.

Dorschner MO, Amendola LM, Turner EH, Robertson PD., Shirts BH. , Gallego CJ, et al. Actionable, pathogenic incidental findings in 1,000 participants’ exomes. Am J Hum Genet 2013; 93(4): 631-40.

Amendola LM, Dorschner MO, Robertson PD, Salama JS, Hart R, Shirts BH, et al. Actionable exomic incidental findings in 6503 participants: challenges of variant classification. Genome Res 2015; 25(3): 305-15.

Campuzano O, Brugada G-S, Fernandez- Falgueras A, Cesar S, Coll M, Mates J, et al. Genetic interpretation and clinical translation of minor genes related to Brugada syndrome. Human Mutation 2019; 40: 749-64.