title: Initial Weekly HRV Response is Related to the Prospective Change in VO2max in Female Soccer Players.
abstract: The aim of this study was to determine whether the early response in weekly measures of HRV, when derived from a smartphone application, were related to the eventual change in VO2max following an off-season training program in female soccer athletes. 9 female collegiate soccer players participated in an 11-week off-season conditioning program. In the week immediately before and after the training program, each participant performed a test on a treadmill to determine maximal oxygen consumption (VO2max). Daily measures of the log-transformed root mean square of successive R-R intervals (lnRMSSD) were performed by the participants throughout week 1 and week 3 of the conditioning program. The mean and coefficient of variation (CV) lnRMSSD values of week 1 showed small (r=- 0.13, p=0.74) and moderate (r=0.57, p=0.11), respectively, non-significant correlations to the change in VO2max at the end of the conditioning program (∆VO2max). Significant and near-perfect correlation was found between the change in the weekly mean lnRMSSD values from weeks 1 and 3 (∆lnRMSSDM) and ∆VO2max (r=0.90, p=0.002). The current results have identified that the initial change in weekly mean lnRMSSD from weeks 1 to 3 of a conditioning protocol was strongly associated with the eventual adaptation of VO2max.
authors.affiliation: Physical Education and Exercise Science, Human Performance Laboratory, Auburn University at Montgomery, Montgomery, United States.
authors.forename: M R
authors.initials: MR
authors.lastname: Esco
authors.affiliation: Kinesiology, The University of Alabama, Tuscaloosa, United States.
authors.forename: A A
authors.initials: AA
authors.lastname: Flatt
authors.affiliation: Departamento de Educação, Universidade Estadual de Londrina, Física, Brazil.
authors.forename: F Y
authors.initials: FY
authors.lastname: Nakamura
mesh_terms: D000222:Adaptation, Physiological; D056352:Athletes; D005080:Exercise Test; D005260:Female; D006339:Heart Rate; D006801:Humans; D063731:Mobile Applications; D010101:Oxygen Consumption; D064797:Physical Conditioning, Human / Q000502:physiology*; D055070:Resistance Training; D012916:Soccer; D055815:Young Adult