Department of Health Sciences and Kinesiology, Biodynamics and Human Performance Center, Georgia Southern University, Savannah, Georgia.
Exercise Physiology Laboratory, Department of Kinesiology, University of Alabama, Tuscaloosa, Alabama; and.
J Strength Cond Res. 2022 Oct 1;36(10):2898-2904. doi: 10.1519/JSC.0000000000003992. Epub 2021 Feb 26.
Flatt, AA, Hornikel, B, Nakamura, FY, and Esco, MR. Effect of competitive status and experience on heart rate variability profiles in collegiate sprint-swimmers. J Strength Cond Res 36(10): 2898-2904, 2022-Interindividual differences in training history may be a determinant of heart rate variability (HRV) profiles in collegiate sprint-swimmers and may account for differences observed between elite and subelite athletes. We therefore compared HRV profiles among national-level and conference-level sprint-swimmers while accounting for individual swim-training history. Twenty-eight short-distance swimmers (18 men and 10 women) recorded postwaking HRV throughout a 4-week standardized training period. The 4-week mean (M) and coefficient of variation (CV, a marker of daily fluctuation) were calculated for resting heart rate (RHR) and the natural logarithm of the root mean square of successive differences (LnRMSSD). Swimmers were categorized as national-level (n = 12) or conference-level (n = 16) competitors. Years of competitive experience was documented for each individual to index training history. p < 0.05 was considered statistically significant. No sex-related differences were observed for any variables (p > 0.05). LnRMSSDM (effect size [ES] = 0.95), LnRMSSDCV (ES = -1.18), RHRCV (ES = -1.05), and competitive experience (ES = 1.23) differed between status groups (p < 0.05). Accounting for multicollinearity between competitive experience and LnRMSSD variables (p < 0.05), competitive experience remained associated with LnRMSSDM (r = 0.44, p = 0.02). With competitive experience included as a covariate, differences in LnRMSSDM between status groups disappeared (p > 0.05, ES = 0.31). National-level swimmers exhibit higher and more stable LnRMSSD than that of their conference-level teammates throughout standardized training. Differences in trend characteristics were attributed to training age. This information may assist practitioners with interpreting interindividual differences in HRV profiles throughout training periods among a mixed roster of athletes.
弗拉特、AA、霍尼克、B、中岛、FY 和埃斯科。竞技状态和经验对大学生短距离游泳运动员心率变异性特征的影响。《力量与体能研究杂志》36（10）：2898-2904，2022-个体训练史的差异可能是决定大学生短距离游泳运动员心率变异性（HRV）特征的一个决定因素，并且可能解释了精英运动员和次精英运动员之间观察到的差异。因此，我们在考虑个体游泳训练史的情况下，比较了国家级和会议级短跑游泳运动员的 HRV 特征。28 名短距离游泳运动员（18 名男性和 10 名女性）在 4 周的标准化训练期间记录了起床后心率变异性。计算了静息心率（RHR）和均方根差的自然对数（LnRMSSD）的 4 周平均值（M）和变异系数（CV，每日波动的标志物）。游泳运动员分为国家级（n=12）或会议级（n=16）选手。记录了每位运动员的竞技经验年限，以指数化训练史。p<0.05 被认为具有统计学意义。任何变量均未观察到性别相关差异（p>0.05）。LnRMSSDM（效应量[ES]=0.95）、LnRMSSDCV（ES=-1.18）、RHR CV（ES=-1.05）和竞技经验（ES=1.23）在状态组之间存在差异（p<0.05）。在考虑竞技经验和 LnRMSSD 变量之间的多重共线性后（p<0.05），竞技经验仍然与 LnRMSSDM 相关（r=0.44，p=0.02）。将竞技经验作为协变量纳入后，状态组之间 LnRMSSDM 的差异消失（p>0.05，ES=0.31）。在标准化训练期间，国家级游泳运动员的 LnRMSSD 高于且比他们的会议级队友更稳定。趋势特征的差异归因于训练年龄。这些信息可能有助于教练在运动员混合阵容中解释整个训练期间的 HRV 特征的个体差异。
