PURPOSE: To compare the LnRMSSD and the LnRMSSD:RR values obtained during a 5-min stabilization period with the subsequent 5-min criterion period and to determine the time course for LnRMSSD and LnRMSSD:RR stabilization at 1-min analysis in elite team-sport athletes. PARTICIPANTS: 35 elite futsal players (23.9 ± 4.5 y, 174.2 ± 4.0 cm, 74.0 ± 7.5 kg, 1576.2 ± 396.3 m in the Yo-Yo test level 1). METHODS: The RR-interval recordings were obtained using a portable heart-rate monitor continuously for 10 min in the seated position. The 2 dependent variables analyzed were LnRMSSD and LnRMSSD:RR. To calculate the magnitude of the differences between time periods, effect-size (ES) analysis was conducted. To assess the levels of agreement, intraclass correlation coefficients (ICC) and Bland-Altman plots were used. RESULTS: The LnRMSSD and LnRMSSD:RR values obtained during the stabilization period (0-5 min) presented very large to nearly perfect ICCs with the values obtained during the criterion period (5-10 min), with trivial ESs. In the ultra-short-term analysis (ie, 1-min segments) the data showed slightly less accurate results, but only trivial to small differences with very large to nearly perfect ICCs were found. CONCLUSION: LnRMSSD and LnRMSSD:RR can be recorded in 5 min without traditional stabilization periods under resting conditions in team-sport athletes. The ultra-short-term analysis (1 min) also revealed acceptable levels of agreement with the criterion.
PURPOSE: To compare the LnRMSSD and the LnRMSSD:RR values obtained during a 5-min stabilization period with the subsequent 5-min criterion period and to determine the time course for LnRMSSD and LnRMSSD:RR stabilization at 1-min analysis in elite team-sport athletes. PARTICIPANTS: 35 elite futsal players (23.9 ± 4.5 y, 174.2 ± 4.0 cm, 74.0 ± 7.5 kg, 1576.2 ± 396.3 m in the Yo-Yo test level 1). METHODS: The RR-interval recordings were obtained using a portable heart-rate monitor continuously for 10 min in the seated position. The 2 dependent variables analyzed were LnRMSSD and LnRMSSD:RR. To calculate the magnitude of the differences between time periods, effect-size (ES) analysis was conducted. To assess the levels of agreement, intraclass correlation coefficients (ICC) and Bland-Altman plots were used. RESULTS: The LnRMSSD and LnRMSSD:RR values obtained during the stabilization period (0-5 min) presented very large to nearly perfect ICCs with the values obtained during the criterion period (5-10 min), with trivial ESs. In the ultra-short-term analysis (ie, 1-min segments) the data showed slightly less accurate results, but only trivial to small differences with very large to nearly perfect ICCs were found. CONCLUSION: LnRMSSD and LnRMSSD:RR can be recorded in 5 min without traditional stabilization periods under resting conditions in team-sport athletes. The ultra-short-term analysis (1 min) also revealed acceptable levels of agreement with the criterion.
Authors: Fabio Y Nakamura; Andrew A Flatt; Lucas A Pereira; Rodrigo Ramirez-Campillo; Irineu Loturco; Michael R Esco Journal: J Sports Sci Med Date: 2015-08-11 Impact factor: 2.988
Authors: Hiago M Melo; Thiago C Martins; Lucas M Nascimento; Alexandre A Hoeller; Roger Walz; Emílio Takase Journal: Ann Noninvasive Electrocardiol Date: 2018-06-04 Impact factor: 1.468
Authors: Sara R Sherman; Clifton J Holmes; Alexander P Demos; Tori Stone; Bjoern Hornikel; Hayley V MacDonald; Michael V Fedewa; Michael R Esco Journal: Int J Sports Physiol Perform Date: 2021-11-10 Impact factor: 4.211
Authors: Fabio Y Nakamura; Lucas A Pereira; Cesar C Cal Abad; Igor F Cruz; Andrew A Flatt; Michael R Esco; Irineu Loturco Journal: J Hum Kinet Date: 2017-03-12 Impact factor: 2.193
Authors: Sara R Sherman; Clifton J Holmes; Bjoern Hornikel; Hayley V MacDonald; Michael V Fedewa; Michael R Esco Journal: Int J Sports Physiol Perform Date: 2021-02-09 Impact factor: 4.010
Authors: Christoph Schneider; Florian Hanakam; Thimo Wiewelhove; Alexander Döweling; Michael Kellmann; Tim Meyer; Mark Pfeiffer; Alexander Ferrauti Journal: Front Physiol Date: 2018-05-31 Impact factor: 4.566
Authors: Chin-Hwai Hung; Filipe Manuel Clemente; Pedro Bezerra; Yi-Wen Chiu; Chia-Hua Chien; Zachary Crowley-McHattan; Yung-Sheng Chen Journal: Int J Environ Res Public Health Date: 2020-06-07 Impact factor: 3.390