May Richard, McBerty Victoria, Zaky Adam, Gianotti Melino
Biology Program, Southern Oregon University, 1250 Siskiyou Boulevard, Ashland, OR, 97520, USA.
J Physiol Anthropol. 2017 Jun 14;36(1):24. doi: 10.1186/s40101-017-0140-z.
Baseline heart rate variability (HRV) is linked to prospective cardiovascular health. We tested intensity and duration of weekly physical activity as predictors of heart rate variability in young adults. Time and frequency domain indices of HRV were calculated based on 5-min resting electrocardiograms collected from 82 undergraduate students. Hours per week of both moderate and vigorous activity were estimated using the International Physical Activity Questionnaire. In regression analyses, hours of vigorous physical activity, but not moderate activity, significantly predicted greater time domain and frequency domain indices of heart rate variability. Adjusted for weekly frequency, greater daily duration of vigorous activity failed to predict HRV indices.
Future studies should test direct measurements of vigorous activity patterns as predictors of autonomic function in young adulthood.
基线心率变异性(HRV)与未来心血管健康相关。我们测试了每周体育活动的强度和持续时间作为年轻成年人心率变异性的预测因素。基于从82名本科生收集的5分钟静息心电图计算HRV的时域和频域指标。使用国际体力活动问卷估计每周中等强度和剧烈活动的小时数。在回归分析中,剧烈体育活动的小时数而非中等强度活动显著预测了更大的心率变异性时域和频域指标。在调整每周频率后,更长的每日剧烈活动持续时间未能预测HRV指标。
未来研究应测试对剧烈活动模式的直接测量作为年轻成年期自主神经功能的预测因素。