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doi:10.1016/j.jsams.2011.11.169

82 Abstracts / Journal of Science and

Conclusion: For football athletes at the Sydney WMG,t is shown that a key index of health, namely obesity as aealth risk factor, is far lower in incidence for both males andemales when comparison is made to open age Australians.

oi:10.1016/j.jsams.2011.11.167

66

hy do people participate in the World Masters Games?

. Adams 1, M. DeBeliso 2, J. Walsh 3, S. Burke 3, I.eazlewood 4, J. Kettunen 5, M. Climstein 3,∗

California State University Monterey Bay, USASouthern Utah University, USAAustralian Catholic University, AustraliaCharles Darwin University, AustraliaArcada University, Finland

Introduction: The World Masters Games are based on ahilosophy that promotes and encourages mature athletes toompete in sport throughout life and thereby improve fitness,ocialize, improve friendship and understanding across cul-ures, and set an example for all related to successful aging.

orld Masters Games athletes have either pursued a sport forn extended period of time or have initiated a sport in later life.t is important to understand why this unique cohort of mas-ers athletes participates in sport. The purpose of this studyas to investigate competitor’s motivations for participation

n their sport at the World Masters Games.Methodology: Data was collected at the Sydney 2009

orld Masters Games using an online survey. Participantsere asked to rate on a scale of 1–7 the importance of three

easons to participate in their sport (1 = item is not a reason,= item is a very important reason). The reasons were: (1) toompete with others, (2) to socialize with other participants,nd (3) to improve my health.

Results: A total of 8070 participants responded (responseate = 29%) with a mean age of 52 yrs (range 25–91 yrs).ompetitors from 83 countries completed the survey, with5% reported having previously competed in the Worldasters Games. On a scale of 1–7 results for reasons to

articipate were (mean (SD)): to compete with others = 5.21.7); to socialize with other participants = 5.7 (1.5); and tomprove my health = 5.6 (1.7). ANOVA revealed a significantifference (p = 0.000) in reasons to participate. Post hoc anal-sis showed significant differences between all three reasonsp = 0.000), with socializing with other participants being thetrongest reason, followed by to improve my health. Compe-ition with others was the weakest reason for participation.

Conclusions: Results show that socialization was the mostmportant personal motivation for sport participation in the

009 Sydney World Masters games. And, that competition isless important motivator to masters level participants than

ither health or socialization. Based on these findings, those

ine in Sport 14S (2011) e1–e119

romoting sport participation in older adults may benefit byighlighting the social aspects of involvement.

oi:10.1016/j.jsams.2011.11.168

67

reatine kinase and neuromuscular indices of fatigue fol-owing elite rugby league match-play

. McLellan 1, D. Lovell 2, D. Ferris 1, M. Climstein 1,∗

Faculty of Health Sciences and Medicine, Bond University,ustraliaSchool of Health and Sport Sciences, University of the Sun-hine Coast, Australia

The purpose of the research: The aim of the present studyas to identify neuromuscular and biochemical markers of

atigue following elite Rugby League match-play.Methodology: Seventeen elite male Rugby League play-

rs were monitored for a single match. Peak rate of forceevelopment (PRFD), peak power (PP) and peak force (PF)ere measured during a countermovement jump (CMJ) on a

orce plate pre and post match-play. Blood samples were col-ected 24 h pre-match, 30 min pre-match, 30 min post-matchnd then at 24 h intervals for a period of 120 h to determinelasma creatine kinase concentration ([CK]).

Results: There were significant (p < 0.05) reductions inRFD and PP up to 24 h post-match with PF significantlyp < 0.05) reduced 30 min post-match. Plasma [CK] signif-cantly (p < 0.05) increased 30 min post-match with a peakCK] occurring 24 h post-match. Plasma [CK] remained sig-ificantly (p < 0.05) elevated for at least 120 h post-match inomparison to 24 h pre-match levels. There were significantorrelations between plasma [CK] and PRFD 30 min post-atch (p < 0.05, r = −0.64) and 24 h post-match (p < 0.05,= −0.58) compared to 30 min pre-match values.

Conclusions: Results demonstrate that neuromuscularunction is compromised for up to 48 h following elite Rugbyeague match-play. Plasma [CK] remained elevated despite20 h recovery indicating that damage to muscle tissue fol-owing Rugby League match-play may persist for at least

days post-match. These data indicate that while a returno pre-match neuromuscular function is evident on day 3ost-match, training load should however be monitored for ateast 5 days post-match to achieve full recovery and optimiseubsequent performance following skeletal muscle damage