@article{oai:niigata-u.repo.nii.ac.jp:00006365,
 author = {Ishida, Riichiro and Okada, Masahiko},
 issue = {4},
 journal = {Acta medica et biologica, Acta medica et biologica},
 month = {Dec},
 note = {The effects of eight weeks of endurance training on autonomic nerve function was assessed by measuring spectral changes in heart rate variability and blood cell counts in 12 healthy subjects. After the 8 week training program, heart rates significantly decreased after training at pre-load resting, during loading, and post-load resting. Low frequency component (LF) power slightly increased from the pre-load resting to the loading phase before the training, but slightly decreased from the pre-load resting to the loading phase after the training. These were not significant, but the difference between the slight increase and the slight decrease was significant (p<0.05). The other parameters including high frequency vagal component (HF) power and LF/HF were not significantly changed from the pre-load resting to the loading phase both before and after the training. These results show that sympathetic nerve activity from pre-load resting to loading decreased after training, while parasympathetic nerve activity was not changed. Mean corpuscular volume increased significantly, while lymphocyte count (LYP) decreased significantly (p <0.05) from before to after training (p<0.05), respectively. Changes in LF power at pre-load resting were positively correlated with changes in LYP from before to after training (p<0.05). Changes in HF power at pre-load resting were negatively correlated with changes in LYP from before to after training (p<0.05). In conclusion, eight weeks of endurance training caused an adaptation in the sympathetic nerve function, but not in the parasympathetic nerve function.},
 pages = {139--146},
 title = {Effects of Physical Training on Heart Rate Variability and Blood Cell Counts in Healthy Adults},
 volume = {46},
 year = {1998}
}