体勢

彼は体勢を崩して転んでしまった。

He lost his balance and fell over.

無理な体勢で荷物を持ち上げると腰を痛めるよ。

If you lift luggage in an awkward position, you'll hurt your back.

力士は素早く体勢を立て直し、相手を押し出した。

The sumo wrestler quickly regained his stance and pushed his opponent out.