Haraldsdottir K, Brickson S, Sanfilippo J, Dunn W, Watson A
Department of Pediatrics, University of Wisconsin, Madison, WI, USA.
Department of Kinesiology, University of Wisconsin, Madison, WI, USA.
Scand J Med Sci Sports. 2018 Feb;28(2):418-424. doi: 10.1111/sms.12934. Epub 2017 Jul 26.
To determine if in-season changes in heart rate recovery (HRR) are related to aerobic fitness and performance in collegiate rowers. Twenty-two female collegiate rowers completed testing before and after their competitive season. Body fat percentage (BF%) was determined by dual-energy X-ray absorptiometry. Maximal aerobic capacity (VO ) and time to exhaustion (T ) were determined during maximal rowing ergometer testing followed by 1 minute of recovery. HRR was expressed absolutely and as a percentage of maximal HR (HRR% ). Variables were compared using paired Wilcoxon tests. Multivariable regression models were used to predict in-season changes in HRR using changes in VO and T , while accounting for changes in BF%. From preseason to post-season, VO and BF% decreased (3.98±0.42 vs 3.78±0.35 L/min, P=.002 and 23.8±3.4 vs 21.3±3.9%, P<.001, respectively), while T increased (11.7±1.3 vs 12.6±1.3 min, P=.002), and HRR% increased (11.1±2.7 vs 13.8±3.8, P=.001). In-season changes in VO were not associated with HRR% (P>.05). In-season changes in T were related to changes in HRR% (β=-1.67, P=.006). In-season changes in BF% were not related to changes in HRR (P>.05 for all). HRR and HRR% were faster preseason to post-season, although the changes were unrelated to VO . Faster HRR% post-season was inversely related to changes in T . This suggests that HRR should not be used as a measure of aerobic capacity in collegiate rowers, but is a promising measure of training status in this population.
确定大学生赛艇运动员赛季中心率恢复（HRR）的变化是否与有氧适能和运动表现相关。22名女大学生赛艇运动员在赛季前后完成了测试。通过双能X线吸收法测定体脂百分比（BF%）。在最大划船测力计测试及随后1分钟恢复期间测定最大有氧能力（VO）和力竭时间（T）。HRR以绝对值和最大心率百分比（HRR%）表示。使用配对Wilcoxon检验比较变量。多变量回归模型用于预测HRR的赛季中变化，该预测基于VO和T的变化，同时考虑BF%的变化。从赛季前到赛季后，VO和BF%下降（分别为3.98±0.42 vs 3.78±0.35 L/min，P = 0.002；23.8±3.4 vs 21.3±3.9%，P < 0.001），而T增加（11.7±1.3 vs 12.6±1.3 min，P = 0.002），HRR%增加（11.1±2.7 vs 13.8±3.8，P = 0.001）。VO的赛季中变化与HRR%无关（P > 0.05）。T的赛季中变化与HRR%的变化相关（β = -1.67，P = 0.006）。BF%的赛季中变化与HRR的变化无关（所有P > 0.05）。从赛季前到赛季后，HRR和HRR%变快，尽管这些变化与VO无关。赛季后更快的HRR%与T的变化呈负相关。这表明HRR不应被用作大学生赛艇运动员有氧能力的指标，但有望作为该人群训练状态的指标。
