英語音読：back pain (2020年度センター試験より）

You might have been told, "Sit up straight or you'll get a backache." But is it true? People have long assumed that posture has played some role in back pain. Surprisingly, the evidence from research linking posture and backache may be weak. Our back is naturally curved-from the side it is S shaped. Individuals have their own unique bone sizes that determine their body shapes. It has been thought that good posture meant straightening out some of the curves. According to a study examining doctors' opinions, it was found that there was no single agreed-upon standard of proper posture. One researcher even says that often changing your posture, especially when sitting, is more important for preventing back pain. The main source of back pain may be stress and lack of sleep, not the way someone is sitting. 

(137 words)

  ℗ 2020 dearstudents

You might have been told, 

あなたは言われたことがあるかもしれません、

"Sit up straight

「背筋をまっすぐにして座りなさい

 or you'll get a backache." 

さもなくば、腰痛になりますよ」と。

But is it true? 

しかし、それは本当でしょうか？ 

People have long assumed 

人々は長い間決めこんでしまっています

that posture has played some role in back pain. 

姿勢が腰痛に何らかの影響を与えていると。

Surprisingly,

驚くべきことに、

the evidence from research linking posture and backache 

姿勢と腰痛を結びつける研究証拠は

may be weak.

弱いかもしれません。

Our back is naturally curved-

1人の背中は自然に曲がっており, 

from the side

横から見ると

it is S shaped.

S 字型をしています。

Individuals have their own unique bone sizes

(各人にはそれぞれ固有の骨の大きさをがあり、

that determine their body shapes.

それが体型を決めています。) 

It has been thought

思われてきた、

that good posture meant straightening out some of the curves. 

良い姿勢はその曲がりの一部をま っすぐにすることだと。

According to a study examining doctors' opinions,

医師たちの意見を調べたある研究で、

it was found that there was no single agreed-upon standard of proper posture. 

適切な姿勢に関して単一の合意基準は全く存在しないことが判明しました。

One researcher even says

ある研究者は述べています、

that often changing your posture,

しばしば姿勢を変えることが、

especially when sitting,

特に座っているときに、

is more important for preventing back pain. 

腰痛を防ぐには重要だとさえ。

The main source of back pain

腰痛の主な原因は

may be stress and lack of sleep, 

ストレスと睡眠不足かもしれません、

not the way someone is sitting. 

人の座り方ではなくて。