The AHA's chart still USES the 220 minus age formula, but has a wider zone of 50 to 85 percent of your Max heart rate.

该协会的表中仍然沿用220减去年龄的算法，但是讲区间扩大到了最高心率的50%到85%。

youdao

If your main goal is to train for an endurance event, say, a half marathon, you would be aiming to train at the 70 to 80% Max heart rate zone.

如果你的目标是参加耐力赛，比如半程马拉松，你就应该在70 - 80 %最大心率区间训练。

youdao

If your main goal is to train for an endurance event, say, a half marathon, you would be aiming to train at the 70 to 80% Max heart rate zone.

如果你的目标是参加耐力赛，比如半程马拉松，你就应该在70 - 80 %最大心率区间训练。

youdao