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- 2026年11月13日
- 独立页面
- 健身训练
- 内容语言: 英语
- 地区: 加拿大
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这是 Youtop 运营的独立目录页面，并非由 Jeff Nippard 或 YouTube 运营、赞助或认可。 提交更正. 你是这位创作者吗？认领此页面
Jeff Nippard · 发布于 2026年1月7日
Most people think the shoulder press targets the front delts. It doesn’t do anything for the side or rear heads. But I wanted to test this out for myself, by measuring muscle activation with these EMG electrodes on a max effort set of shoulder press on me and my friend Will Tennyson. I expected to see a ton of front delt activation, with a little bit of side and virtually no rear. That’s because when you press vertically, your anterior delt fibers are lined up with the path of resistance better than the side and rear fibers. So Will was up first and even though EMG may not predict long-term muscle growth, what we found was super interesting… His front delt activation looked like this: really high, as you’d expect. His rear delt activation looked like this: really low, as you’d expect. But surprisingly, his side delt activation was not only also very high, it peaked higher than even his front delts. I was so surprised I had to test it myself. And for me… I found… the exact same pattern: super high front and side delt.
