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dc.contributor.authorMcMillan, K
dc.date.accessioned2018-08-24T08:25:40Z
dc.date.available2018-08-24T08:25:40Z
dc.date.issued2005-07-01
dc.identifier.citationMcMillan, K (2005). Lactate threshold responses to a season of professional british youth soccer. British Journal of Sports Medicine 39 (7), 432-436
dc.identifier.issn0306-3674
dc.identifier.urihttp://hdl.handle.net/10379/9538
dc.description.abstractObjective: To examine the changes in aerobic endurance performance of professional youth soccer players throughout the soccer season. Methods: Nine youth soccer players were tested at six different time points throughout the soccer season by sub-maximal blood lactate assessment, using an incremental treadmill protocol. Whole blood lactate concentration and heart frequency (Hf) were determined at each exercise stage. Running velocities at the first lactate inflection point (v-T-lac) and at a blood lactate concentration of 4 mmol l(-1) (v-4mM) were determined. Results: Running velocity at the two lactate thresholds increased from the start of pre-season training to the early weeks of the competitive season, from 11.67 (0.29) to 12.96 (0.28) km h(-1) for v-T-lac, and from 13.62 (0.25) to 14.67 (0.24) km h(-1) for v-4mM (p < 0.001). However, v-T-lac and v-4mM when expressed relative to maximum heart frequency (Hf-max) remained unchanged. The Hf to blood lactate concentration relationship was unchanged after the pre-season training period. The two expressions of lactate threshold did not reveal differences between each other. Conclusion: Running velocity at v-T-lac and v-4mM increased significantly over the pre-season period, but v-T-lac and v-4mM were unchanged when expressed relative to Hfmax. This finding may indicate that increased endurance performance may be mainly attributable to alterations in VO2max. Although lactate assessment of soccer players is useful for determining endurance training adaptations in soccer players, additional assessment of the other two determinants of endurance performance (VO(2ma)x and running economy) may provide more useful information for determining physiological adaptations resulting from soccer training and training interventions.
dc.publisherBMJ
dc.relation.ispartofBritish Journal of Sports Medicine
dc.subjectmedical-research program
dc.subjectrunning performance
dc.subjectendurance
dc.subjectinjuries
dc.subjectfootball
dc.subjectaudit
dc.subjectaccumulation
dc.subjectexercise
dc.subjectplayers
dc.subjecteconomy
dc.titleLactate threshold responses to a season of professional british youth soccer
dc.typeArticle
dc.identifier.doi10.1136/bjsm.2004.012260
dc.local.publishedsourcehttp://bjsm.bmj.com/content/bjsports/39/7/432.full.pdf
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