Eur J Appl Physiol May 2016 PMID 27032805

Unique activation of the quadriceps femoris during single- and multi-joint exercises.

Ryoichi Ema, Masanori Sakaguchi, Ryota Akagi, Yasuo Kawakami

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Peak: 3 in Dec 2024

across 5 sources since Sep 2021

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AI synopsis

What people are saying

Discussions focus on the implications of muscle activation differences during exercises like leg press and leg extensions, highlighting that multiple posts confirm the findings and reference existing studies. The tone remains analytical and supportive, reflecting a solid interest but limited deep engagement with the methodological details.

AgreementModerate agreement

Most discussions agree with the findings, citing multiple studies and reinforcing the validity of the research.

InterestModerate interest

Participants demonstrate moderate curiosity by referencing exercise types and muscle activation, showing engagement with the topic.

EngagementModerate engagement

Comments include brief mentions and references to studies, indicating some depth but not extensive analysis.

ImpactModerate impact

The consensus suggests the research influences views on exercise selection and muscle development, but without strong calls for change.

Abstract in brief

The study found that the activation of the rectus femoris muscle is higher during single-joint knee extension exercises compared to multijoint leg press exercises and that adding hip extension torque decreases rectus femoris activation.
During multijoint exercises like the leg press, the activation of the vastus muscles remains relatively high and increases with fatigue, but the rectus femoris does not show the same increase in activation even at high intensities.
The differences in muscle activation between exercises are influenced by whether hip extension torque is involved, showing that muscle engagement is specific to the type of exercise and muscle group involved.

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Danilo Amorim

@danilonutripers · X

RT @hypertrophyhome: Leg Press vs Leg Extensions for Quad Growth References: https://t.co/4CuHNFKbnx + https://t.co/OJXzCAwd3Q + https://t…

Mar 11, 2025 · 1 share · 102 followers View post →

House of Hypertrophy

@hypertrophyhome · X

Leg Press vs Leg Extensions for Quad Growth References: https://t.co/4CuHNFKbnx + https://t.co/OJXzCAwd3Q + https://t.co/9THF6MjcTd https://t.co/YtqM8vIG3O

Dec 3, 2024 · 6 likes · 1 share · 3,574 followers View post →

defpersonaltrainer

@defptrainer · X

Five Reminders to Grow your Leg Strength https://t.co/g7mLIxaqh5

Dec 3, 2024 · 82 followers View post →

Philipp Greimel

@philippgreimel · X

RT @BradSchoenfeld: @dougbrignole That finding has been shown in multiple studies: https://t.co/4tpGa2fmPy https://t.co/TwlPwjGYi2 https…

Apr 9, 2023 · 1 share · 29 followers View post →

Sama Hoole

@SamaHoole · X

@DrManison There you go sir. https://t.co/3U4zpbUGMg

Sep 14, 2022 · 1 like · 34,285 followers View post →

House of Hypertrophy

@hypertrophyhome · X

All subjects trained the back squat and leg press, two exercises that probably do not significantly develop the rectus femoris. (https://t.co/350IjoclM5 + https://t.co/acRxk7ERE0) (3/4)

Jan 9, 2022 · 3 likes · 3,574 followers View post →

Brad Schoenfeld, PhD

@BradSchoenfeld · X

@dougbrignole That finding has been shown in multiple studies: https://t.co/4tpGa2fmPy https://t.co/TwlPwjGYi2 https://t.co/fzbiAk1aVT

Sep 5, 2021 · 1 like · 1 share · 95,785 followers View post →