J Strength Cond Res October 2021 PMID 31268995

Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise.

Pietro Mannarino, Thiago Matta, Jefferson Lima, Roberto Simão, Belmiro Freitas de Salles

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Mentions

33
Peak: 13 in Oct 2021
across 4 sources since Sep 2019

Extended reach

268,769
potential audience

Total likes

3,011

Video views

97,935

Mentions per month

Sep 2019 – Dec 2025

Where it's discussed

  • X / Twitter18 posts
  • Facebook8 posts
  • YouTube4 videos
  • News3 articles

AI synopsis

What people are saying

The social discussions demonstrate support for the study's conclusions, with comments like 'curls are better for biceps' and references to concrete results such as 'Bicep thickness increased 11%,' showing an active engagement with the research. The tone emphasizes both agreement and practical implications, impacting personal training approaches.

AgreementModerate agreement

Most discussions support the findings that single-joint exercises lead to greater hypertrophy, indicating agreement with the publication.

InterestModerate interest

Participants show a moderate interest, discussing specific exercises like curls and rows and referencing the study details.

EngagementModerate engagement

Comments include summaries of the results, mentioning percentage increases and implications for training, suggesting active engagement.

ImpactModerate impact

The discussions highlight how the research influences training choices, emphasizing that including both types of exercises is 'overwhelmingly demonstrated as optimal,' which indicates a meaningful impact on training strategies.

Abstract in brief

  • The study compared the effects of single-joint (unilateral biceps curl) and multijoint (unilateral dumbbell row) exercises on elbow flexor muscle growth and strength in untrained men.
  • Results showed that the single-joint exercise led to significantly greater muscle thickness increase (11.06%) compared to the multijoint exercise (5.16%) after 8 weeks of resistance training.
  • While strength improvements were greater for each type of exercise in their respective trained arms, the findings suggest that for maximizing hypertrophy in elbow flexors, single-joint exercises should be prioritized in training programs.

Top posts

Most liked on X and Bluesky
Daniel Richter | StrengthLog
@strengthlogapp · X

@movestrength Love rows, but curls are better for biceps. Only one study have compared rows vs curls. Eight weeks, 2 workout per week. Bicep thickness increased 11% in the curl group and 5% in the row group. https://t.co/PSerYskSlJ https://t.co/CSJk7kQSlQ

Oct 24, 2021 · 33 likes · 1 share · 5,791 followers View post →
Marc Lobliner - IFBB Pro
@MarcLobliner · X

If choosing only one, multi-joint movements will outperform single joint systemically but including both has been overwhelmingly demonstrated as optimal for hypertrophy. https://t.co/5rxiT2DQPy https://t.co/ptkA5fItaq

Feb 22, 2021 · 4 likes · 1 share · 104,233 followers View post →
Marcos Romero | Nutrición en Forma
@nutricionenform · X

Feb 18, 2023 · 3 likes · 10,430 followers View post →
Lucão Ex-tuitero da URSAL
@1Cafe1Tweet · X

@JYKines @DanielBerglind https://t.co/OpkhPuLN04

Aug 24, 2025 · 1 like · 856 followers View post →
Men of Veritas
@menofveritas · X

RT @MarcLobliner: If choosing only one, multi-joint movements will outperform single joint systemically but including both has been overwhe…

Feb 22, 2021 · 1 share · 19,891 followers View post →
OJSN
@iamojsn · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 2, 2021 · 11 shares · 14,933 followers View post →

All mentions

Lucão Ex-tuitero da URSAL
@1Cafe1Tweet · X

@JYKines @DanielBerglind https://t.co/OpkhPuLN04

Aug 24, 2025 · 1 like · 856 followers View post →
Marcos Romero | Nutrición en Forma
@nutricionenform · X

Feb 18, 2023 · 3 likes · 10,430 followers View post →
Chris the Beach Bum
@oshawottking · X

RT @strengthlogapp: @movestrength Love rows, but curls are better for biceps. Only one study have compared rows vs curls. Eight weeks, 2 w…

Oct 24, 2021 · 1 share · 53 followers View post →
Daniel Richter | StrengthLog
@strengthlogapp · X

@movestrength Love rows, but curls are better for biceps. Only one study have compared rows vs curls. Eight weeks, 2 workout per week. Bicep thickness increased 11% in the curl group and 5% in the row group. https://t.co/PSerYskSlJ https://t.co/CSJk7kQSlQ

Oct 24, 2021 · 33 likes · 1 share · 5,791 followers View post →
Runshaw SES
@RUNSHAW_SES · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 3, 2021 · 11 shares · 197 followers View post →
Melanie
@Melanie07161375 · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 3, 2021 · 11 shares View post →
Bader alshatti Ms
@alshatti_fit · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 3, 2021 · 11 shares · 9,843 followers View post →
Coach Lizzie
@bodywizept · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 3, 2021 · 11 shares · 236 followers View post →
Alex
@AlexViKu · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 3, 2021 · 11 shares · 97 followers View post →
Ying-Chu Chen
@coachstevetw · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 2, 2021 · 11 shares · 509 followers View post →
Scotty Butcher PhD
@TheStrengthJedi · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 2, 2021 · 11 shares · 2,063 followers View post →
Pak Androulakis-Korakakis, PhD
@pakpatroklos · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 2, 2021 · 11 shares · 1,194 followers View post →
Lorenzo S.Wayne
@LorenzoSWayne · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 2, 2021 · 11 shares · 51 followers View post →
Kineblasto
@Kineblasto · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 2, 2021 · 11 shares · 111 followers View post →
OJSN
@iamojsn · X

RT @JSCRonline: Current Issue: Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/x…

Oct 2, 2021 · 11 shares · 14,933 followers View post →
Men of Veritas
@menofveritas · X

RT @MarcLobliner: If choosing only one, multi-joint movements will outperform single joint systemically but including both has been overwhe…

Feb 22, 2021 · 1 share · 19,891 followers View post →
Marc Lobliner - IFBB Pro
@MarcLobliner · X

If choosing only one, multi-joint movements will outperform single joint systemically but including both has been overwhelmingly demonstrated as optimal for hypertrophy. https://t.co/5rxiT2DQPy https://t.co/ptkA5fItaq

Feb 22, 2021 · 4 likes · 1 share · 104,233 followers View post →
Alex
@AlexViKu · X

Single-Joint Exercise Results in Higher Hypertrophy of Elbow Flexors Than Multijoint Exercise https://t.co/LVl4AaQFSC

Sep 8, 2019 · 97 followers View post →