筋トレ

• 読み: きんトレ
• ローマ字: kintore
• 漢字の分解: 筋 (muscle, sinew) + トレ (abbreviation of トレーニング, from English 'training') → muscle training
• 発音: /kiɴ.to.ɾe/

意味

Weight training or muscle-building exercise — the go-to abbreviation for any resistance training.

筋トレ is an abbreviation of 筋力トレーニング (muscle strength training) and is universally used in Japan to refer to any form of resistance exercise, from bodyweight pushups at home to serious barbell work at the gym. The 2010s-2020s fitness boom made 筋トレ a lifestyle keyword, with dedicated YouTube channels, Instagram accounts, and bestselling books. It carries a positive, aspirational tone — saying you do 筋トレ signals discipline and self-improvement.

例文

1. 最近筋トレにハマってて、週4でジム行ってる。
2. 筋トレ始めてから肩こりが全然なくなったんだよね。
3. 仕事のストレスは筋トレで発散するのが一番だわ。

使い方ガイド

場面: friends, social media, fitness, daily conversation

トーン: positive, aspirational

正しい言い方

• 今日は筋トレの日だから先に帰るね。 (Today is my training day so I'm heading home early.)
• 筋トレ初心者におすすめのメニューある？ (Got any recommended routines for a training beginner?)

避ける言い方

• 目上の人に「筋トレしたら？」は失礼 — 体型に関するアドバイスは慎重に (Telling someone senior 'why don't you work out?' is rude — be careful with unsolicited fitness advice)

よくある間違い

• Assuming 筋トレ only means heavy weightlifting — it covers any muscle-building exercise including bodyweight training at home

起源と歴史

Abbreviation of 筋力トレーニング (kinryoku torēningu, muscle strength training). The shortened form 筋トレ became the standard casual term as fitness culture grew in Japan from the 2000s onward.

文化的背景

時代: 2000s abbreviation, mainstream fitness boom from 2010s

世代: All ages, especially 20s-40s

社会的背景: Universal

地域メモ: Used across all of Japan. The fitness boom has made 筋トレ one of the most common lifestyle keywords, driven by fitness YouTubers and social media culture.