シャドーイング練習: How to RUN So FAST It Feels ILLEGAL - 動画で英語スピーキングを学ぶ
レッスンを作成中...
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Running fast isn't about moving your legs as fast as humanly possible or being the strongest guy in the weight room.
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Top sprinters spend less than a tenth of a second on the ground with each stride, so real speed isn't just about raw muscle.
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It's about how much force you can put into the track in that tiny window.
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That's why you can be built like a tank
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and still get completely dusted by a skinny teenager who knows how to use that force better.
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Once that clicks, speed stops feeling like something you're just born with and starts feeling like an advantage you can actually build.
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And it all starts with how you explode off the line.
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When you watch someone explode out of nowhere, you aren't looking at top speed.
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You're looking at acceleration.
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And acceleration is a completely different monster.
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A lot of people try to accelerate by forcing themselves to stay low.
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They lean way forward, bend at the waist, and end up looking like they dropped a contact lens mid -sprint.
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But forcing yourself down doesn't make you faster.
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It just chops your stride short so you don't faceplant.
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Real acceleration is a smooth transition.
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Your body starts naturally angled because you're driving yourself forward not up.
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As you build momentum, each step naturally pushes your torso a little higher until you're upright.
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Stay low on purpose and you strip away your stride length.
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Pop straight up on step one and you waste all your horizontal drive.
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Here's where things get interesting.
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Most people think a fast step begins the moment your shoe hits the ground.
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You slam your foot down, push hard, and hope for the best.
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But long before you make contact, that step is already being set up in the air.
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Watch anyone moving ridiculously fast and you'll notice their front leg doesn't just wait around to land.
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It sweeps back toward the ground a split second before contact.
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If your foot just floats down and lands out in front of your body, it acts like a speed bump.
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You waste energy breaking yourself before you can push again.
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Getting that leg ready early turns every foot strike into a whip instead of a stumble.
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The foot is already moving with intent before it ever reaches the floor, helping keep your speed going forward.
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This brings us to one of the easiest mistakes to make, confusing raw strength with speed.
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You can hit the gym, squat three plates, and build legs that look like tree trunks.
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That definitely gives you plenty of force potential.
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But at max speed, an elite runner's foot is on the ground for only about a tenth of a second per step.
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One tenth of a second.
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The ground doesn't care if you can move 300 pounds in two slow seconds under a barbell
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if you can't unload that force in the blink of an eye.
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Heavy lifting builds the engine.
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Running fast demands that you tap into that power almost instantly.
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Having big legs alone won't magically make you fast if that strength takes too long to show up.
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So how do you bridge the gap between heavy strength
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and fast foot strikes you jump different jumps train different qualities
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think about a deep squat jump where you bend your knees swing your arms
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and blast off into the ceiling that's great for building pure explosive power
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but it takes time to set up now picture quick rhythmic
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hops off the balls of your feet like bouncing on a hard trampoline you barely bend your knees
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and you're back in the air the instant you touch the
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floor the deep jump develops power the fast hop develops quick reactivity
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if you want to move like killua blitzing across a room you need both.
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Quick bounds and reactive hops teach your body to snap back immediately.
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But if you throw away control just to chase height or rush through reps, the quality of that contact disappears.
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You're trying to store and launch energy like a steel spring.
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When people hear that sprinters hit the ground like steel springs, they make a classic mistake.
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They freeze up.
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They lock their ankles, stiffen their knees, and run like a wooden mannequin trying to flee a fire.
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That just slows you down and wastes energy.
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Useful stiffness means your lower body can resist collapsing under impact while still moving naturally.
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When your foot hits the ground at full speed, a lot of force gets driven into your legs all at once.
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If your ankle or knee buckles on contact, you leak speed like a popped tire.
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But when your joints hold their shape, absorb the hit, and spring right back, you lose way less momentum.
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The goal is elastic tension with enough freedom to move.
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You're trying to bounce off the ground smoothly and quickly.
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Here's a mental paradox almost everyone runs into at some point.
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You can feel like you're sprinting at absolute max speed when you're actually slowing down.
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We've all seen it happen in sports.
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Someone makes a breakaway run, feels their lungs burning, tries to dig deeper, strains their neck, pumps their arms wildly, and gets tracked down from behind anyway.
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As fatigue sets in, effort and speed stop matching up.
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Fighting through the burn feels like you're flying, but gritting your teeth and forcing extra tension into your neck and shoulders just fights your own movement.
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This is why actual speed work looks bizarrely short from the outside
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if you stack sprint after sprint with almost no rest the
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session gradually shifts toward conditioning instead of true top speed work
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conditioning has its own purpose for raw speed the recovery needs
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to be long enough for each run to stay genuinely fast
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it's easy to get excited about plyometrics heavy squats core work
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and bounding drills a lot of people end up treating those
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extras like the main dish they spend an hour crushing their legs in the gym
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or doing dozens of jump variations and then try to run sprints on dead legs.
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All those extra exercises are support beams.
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The sprint is still the house.
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If your gym work leaves you so beat up that your actual running becomes sluggish and sloppy, you flip the priority list upside down.
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Strength and jumps build the engine, while the sprint is where you actually use it at full speed.
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You only build top speed by actually moving fast.
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Everything else is just setting the stage.
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When you see someone pull away effortlessly on a field or a track, looking like they have a cheat code turned on, there usually isn't one secret physical superpower hiding behind it.
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Everything is simply working in sync.
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They build momentum through a smooth acceleration line.
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They prep each foot strike in the air instead of breaking on impact.
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They have enough strength to punch into the ground, paired with the stiffness to spring right back off it.
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And they actually practice moving fast when their body is fresh enough to hit that speed.
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Ridiculous speed comes from getting all of those pieces to work together, with less wasted effort between the power you have and the ground underneath you.
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Master that connection, and the next time you take off, everyone else is just going to watch you disappear.
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If you want to break down the mechanics behind another physical skill that looks effortless until you try it, subscribe and check out the next video on screen.
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このレッスンの語彙とスピーキングのポイント
このスピーキングレッスンは、動画「How to RUN So FAST It Feels ILLEGAL」を教材にしています。 繰り返し出てくる語は次のとおりです：speed, fast, ground, leg, foot。 この動画には、シャドーイング用の文が91文、単語が1256語あります。 音声の長さは5:49です。 話す速さは速く、1分あたり約216語です。音のつながりや弱く発音される音が多くなります。 英語の頻出3,000語に含まれる単語は81%だけなので、語彙は難しめです。
この動画の重要語彙
動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| sprint 名詞 | /spɹɪnt/ | スプリント, 短距離走 |
| knee 名詞 | /ni/ | 膝 |
| acceleration 名詞 | /əkˌsɛl.əˈɹeɪ.ʃən/ | 加速 |
| naturally 副詞 | /ˈnæt͡ʃ.(ə.)ɹə.li/ | 勿論 |
| bend 動詞 | /bɛnd/ | 曲げる |
| momentum 名詞 | /ˌmə(ʊ)ˈmɛntəm/ | 運動量 |
| tenth 形容詞 | /tɛnθ/ | 十番目 |
| hop 名詞 | /hɒp/ | ホップ |
| smooth 形容詞 | /smuːð/ | スムース |
| tension 名詞 | /ˈtɛnʃən/ | 緊張, 不安 |
| disappear 動詞 | /dɪsəˈpɪɹ/ | 消える |
| ankle 名詞 | /ˈæŋ.kəl/ | 足首, 踝 |
| explode 動詞 | /ɪkˈsploʊd/ | 爆発する |
| rush 動詞 | /ɹʌʃ/ | 急ぐ, 駆け付ける |
| ridiculous 形容詞 | /ɹɪˈdɪk.jə.ləs/ | 馬鹿らしい |
動画に出てくる句動詞
| 単語 | 意味 |
|---|---|
| check out 動詞 | 試験する, 検査する |
| show up 動詞 | 現れる |
| slow down 動詞 | 遅らせる |
| take off 動詞 | 脱ぐ |
| throw away 動詞 | 棄てる, 捨てる |
注意したい発音
話し手はyou're, doesn't, isn'tなど、短縮形や弱形を22回使っています。聞こえたとおりの短い形で発音しましょう。
- 「th」の音: tenth /tɛnθ/, smooth /smuːð/, underneath /ˌʌndɚˈniθ/, smoothly /ˈsmuːðli/, rhythmic /ˈɹɪð.mɪk/
- 「sh」と「zh」の音: acceleration /əkˌsɛl.əˈɹeɪ.ʃən/, tension /ˈtɛnʃən/, rush /ɹʌʃ/, transition /tɹænˈzɪʃ.ən/, shoe /ˈʃu/
- 長い単語（アクセントの位置に注意）: acceleration /əkˌsɛl.əˈɹeɪ.ʃən/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, momentum /ˌmə(ʊ)ˈmɛntəm/, ridiculous /ɹɪˈdɪk.jə.ləs/, priority /pɹaɪˈɒɹɪti/
日本語話者が苦手な音：
- /r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: acceleration /əkˌsɛl.əˈɹeɪ.ʃən/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, ridiculous /ɹɪˈdɪk.jə.ləs/, gradually /ˈɡɹæd͡ʒuəli/, drill /dɹɪl/
- /v/ — /b/ にならないように、上の歯を下唇に当てる: variation /ˌvɛəɹiˈeɪʃn̩/, explosive /ɛkˈspləʊsɪv/, reactive /ɹiːˈæktɪv/, reactivity /rɪˈakˈtɪvɪti/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: flip /flɪp/, freeze /ˈfɹiːz/, float /fləʊt/, fatigue /fəˈtiːɡ/, flee /ˈfliː/
この動画での練習方法
- まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
- まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
- 自分の声を録音して元の音声と比べます。sprint, knee, accelerationなどの単語に特に注意しましょう。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。