Effect of moderate exercise on the electrocardiogram in healthy young and middle-aged men.

@article{Simonson1953EffectOM,
  title={Effect of moderate exercise on the electrocardiogram in healthy young and middle-aged men.},
  author={Ernst Simonson},
  journal={Journal of applied physiology},
  year={1953},
  volume={5 10},
  pages={584-8}
}