[1] Mattsson C M, Lind B, Enqvist J K, et al. No evidence of cardiac fatigue in tissue velocity curves at rest after 6 days of ultra-endurance exercise[J]. Eur Heart J, 2010, 31(Sup-pl):304-305. [2] Douglas PS, O'Toole ML, Hiller WD, et al. Cardiac fatigue after prolonged exercise[J]. Circulation, 1987, 76(6):1206-1213. [3] Whyte GP, George K, Sharma S, et al. Cardiac fatigue fol-lowing prolonged endurance exercise of differing distances[J]. Med Sci Sports Exerc, 2000, 32(6):1067-1072. [4] Aslani A, Babaee Bigi MA, Moaref AR, et al. Effect of ex-treme exercise on myocardial function as assessed by tissue Doppler imaging[J]. Echocardiography, 2009, 26(9):1036-1040. [5] Hsieh BP, Unver K, McNulty E, et al. The amplitude ratio of the first to second heart sound is reduced in left ventricular systolic dysfunction[J]. Int J Cardiol, 2010, 145(1):133-135. [6] Hansen PB, Luisada AA, Miletich DJ, et al. Phonocardio-graphy as a monitor of cardiac performance during anesthesia[J]. Anesth Analg, 1989, 68(3):385-387. [7] Shouzhong Xiao, Xingming Guo, Xiaobo Sun, et al. A rela-tive value method for measuring and evaluating cardiac reserve[J/OL]. Biomed Eng Online, 2002, 1:6[2014-01-08]. http://biomedical-engineering-online.biomedcentral.com/ar-ticles/10.1186/1475-925X-1-6. [8] Friedberg MK, Silverman NH. The systolic to diastolic dura-tion ratio in children with heart failure secondary to restrictive cardiomyopathy[J]. J Am Soc Echocardiogr, 2006, 19(11):1326-1331. [9] Lin Xiong, Shouzhong Xiao, Qiang Zhou, et al. Multi-center pragmatic studies evaluating the time indicator of cardiac per-fu sion reserve[J]. J Biomed Sci Eng, 2013, 6(1):1-7. [10] Xiao SZ, Guo XM, Wang FL, et al. Evaluating two new in-dicators of cardiac reserve[J]. IEEE Eng Med Biol Mag, 2003, 22(4):147-152. [11] Xie ML, Xiao SZ, Liu TH, et al. Multi-center, multi-topic heart sound databases and their applications[J]. J Med Syst, 2012, 36(1):33-40. [12] 赵艳霞, 刘建明, 许定国, 等. 运动中心脏舒张期与收缩期比值变化趋势的人群调查研究[J]. 中国应用生理学杂志, 2013, 29(2):134-136 [13] 曲绵域. 实用运动医学[M]. 第二版. 北京:人民体育出版社, 1982:23-84. [14] Kokkinos P, Pittaras A, Narayan P, et al. Exercise capacity and blood pressure associations with left ventricular mass in prehypertensive individuals[J]. Hypertension, 2007, 49(1):55-61. [15] Wen-Zhu Wu, Xing-Ming Guo, Mei-Lan Xie, et al. Re-search on First Heart Sound and Second Heart Sound Ampli-tude Variability and Reversal Phenomenon——A New Finding in Athletic Heart Study[J]. J Med Biol Eng, 2009, 29(4):202-205. |