dc.contributor.author | Bartlett, Jonathan D | |
dc.contributor.author | Hatfield, Malcolm | |
dc.contributor.author | Parker, Ben B | |
dc.contributor.author | Roberts, Llion A | |
dc.contributor.author | Minahan, Clare | |
dc.contributor.author | Morton, James P | |
dc.contributor.author | Thornton, Heidi R | |
dc.date.accessioned | 2019-10-02T22:55:12Z | |
dc.date.available | 2019-10-02T22:55:12Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 1746-1391 | |
dc.identifier.doi | 10.1080/17461391.2019.1669718 | |
dc.identifier.uri | http://hdl.handle.net/10072/387995 | |
dc.description.abstract | This study examined the relationship between dual-energy x-ray absorptiometry (DXA)-derived estimates of energy balance (EB) and changes in body composition across various seasonal phases in team sport athletes. Forty-five Australian rules footballers underwent six DXA scans across a 12-month period (off-season [OS, Week 0–13], early [PS1, Week 13–22] and late pre-season [PS2, Week 22–31] and early [IS1, Week 3–42] and late in-season [IS2, Week 42–51]). EB (kcal·day−1) was estimated from changes in fat free soft tissue mass (FFSTM) and fat mass (FM) between scans according to a validated formula. An EB threshold of ± 123 kcal·day−1 for >60 days demonstrated a very likely (>95% probability) change in FFSTM (>1.0 kg) and FM (>0.7 kg). There were small to almost perfect relationships between EB and changes in FM (r = 0.97, 95% CI, 0.96–0.98), FFSTM (r = −0.41, −0.92 to −0.52) and body mass (r = 0.27, 0.14–0.40). EB was lowest during PS1 compared to all other phases (range, −265 to −142 kcal·day−1), with no other changes at any time. Increases in FFSTM were higher during OS compared to PS2 (1.6 ± 0.4 kg), and higher during PS1 compared to PS2, IS1, and IS2 (range, 1.6–2.1 kg). There were no changes during in-season (−0.1–0.05 kg). FM decreased only in PS1 compared to all other seasonal phases (−1.8 to −1.0 kg). Assessments of body composition can be used as a tool to estimate EB, which practically can be used to indicate athlete’s training and nutrition behaviours/practices. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Taylor & Francis | |
dc.publisher.place | United Kingdom | |
dc.relation.ispartofpagefrom | 1 | |
dc.relation.ispartofpageto | 9 | |
dc.relation.ispartofjournal | European Journal of Sport Science | |
dc.subject.fieldofresearch | Mechanical engineering | |
dc.subject.fieldofresearch | Sports science and exercise | |
dc.subject.fieldofresearch | Applied and developmental psychology | |
dc.subject.fieldofresearchcode | 4017 | |
dc.subject.fieldofresearchcode | 4207 | |
dc.subject.fieldofresearchcode | 5201 | |
dc.subject.keywords | AFL | |
dc.subject.keywords | education | |
dc.subject.keywords | nutrition | |
dc.subject.keywords | periodization | |
dc.subject.keywords | training | |
dc.title | DXA-derived estimates of energy balance and its relationship with changes in body composition across a season in team sport athletes. | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dcterms.bibliographicCitation | Bartlett, JD; Hatfield, M; Parker, BB; Roberts, LA; Minahan, C; Morton, JP; Thornton, HR, DXA-derived estimates of energy balance and its relationship with changes in body composition across a season in team sport athletes., European Journal of Sport Science, 2019, pp. 1-9 | |
dc.date.updated | 2019-10-01T23:49:11Z | |
dc.description.version | Accepted Manuscript (AM) | |
gro.description.notepublic | This publication has been entered into Griffith Research Online as an Advanced Online Version. | |
gro.rights.copyright | © 2019 Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in European Journal of Sport Science on 29 Sep 2019, available online: https://doi.org/10.1080/17461391.2019.1669718 | |
gro.hasfulltext | Full Text | |
gro.griffith.author | Roberts, Llion A. | |
gro.griffith.author | Minahan, Clare L. | |