In the original article, an incorrect abbreviation for muscle thickness, “ML,” was used instead of “MT.” A correction has been made to the Abstract, subsection Results:
“Fascicle lengths (GM: 13.2%; GL: 8.8%; SO: 21%) and MT (GM: 14.9%; GL: 15.3%; SO: 19.1%) increased from pre- to post-training, whereas PAs remained similar. GM and SO FL and MT increased up to the 8th training week, whereas GL FL increased up to the 4th week. SO displayed the highest, and GL the smallest gains in FL post-training.”
In addition, the training responsiveness was mistakenly calculated considering the Pre-training and Post-12 moments. Thus, “Pre-training and Post-12” was published instead of “Baseline and Pre-training,” which is the correct calculation. Corrections have been made in the following places:
The Materials and Methods section, subsection Statistics, the final paragraph:
“Responsiveness to the eccentric training (percent change from pre- to post-training) was determined by the typical error (TE) criteria (Cadore et al., 2018). The TE was calculated by the equation TE = SDdiff/√2, where SDdiff is the standard deviation of the differences between the evaluation time-points of Baseline and Pre-training. Non-responsive participants were defined as those that did not achieve an increase that was two times higher than the TE with respect to zero.”
The Results section, paragraphs 2-4:
“All triceps surae muscles increased their FL in response to eccentric training (GM: p < 0.001, ES = 0.90; GL: p < 0.001, ES = 0.51; SO: p < 0.001, ES = 1.00; Table 1). The three muscles increased their FL in the first four training weeks. GM and SO continued to increase their FL from Post-4 to Post-8, while GL did not. None of the three muscles had FL changes between Post-8 and Post-12 (Table 1). The individual responsiveness analysis showed that 60–90% of the participants responded to eccentric training with FL increases (Table 2).
Table 2
| Typical error | Responders n (%) | Non-responders n (%) | ||
|---|---|---|---|---|
| GM | FL | 0.21 | 14 (70) | 06 (30) |
| PA | 0.72 | 10 (50) | 10 (50) | |
| MT | 0.04 | 18 (90) | 02 (10) | |
| GL | FL | 0.30 | 12 (60) | 08 (40) |
| PA | 0.48 | 08 (40) | 12 (60) | |
| MT | 0.02 | 19 (95) | 01 (05) | |
| SO | FL | 0.22 | 18 (90) | 02 (10) |
| PA | 0.59 | 07 (35) | 13 (65) | |
| MT | 0.03 | 17 (85) | 03 (15) |
Individual responsiveness to eccentric training.
GM, gastrocnemius medialis; GL, gastrocnemius lateralis; SO, soleus; FL, fascicle length; PA, pennation angle; MT, muscle thickness.
Pennation angle did not change along the training period for any muscle (p > 0.05; ES < 0.2; Table 1). According to the individual responsiveness analysis, 35–50% of the participants presented changes on PA in response to the eccentric training (Table 2).
Muscle thickness increase was consistent among the muscles assessed in this study (GM: p < 0.001, ES = 1.08; GL: p < 0.001, ES = 1.29; SO: p < 0.001, ES = 1.40; Table 1). Just as observed for FL, the three muscles increased their MT in the first four training weeks, and GM and SO continued to increase from Post-4 to Post-8. None of the three muscles had MT changes between Post-8 and Post-12 (Table 1). The individual responsiveness analysis shows that 85–95% of the participants responded to eccentric training with MT increases (Table 2).”
Finally, as the training responsiveness was miscalculated, Table 2 needs to be corrected. The corrected Table 2 appears above.
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
References
1
CadoreE. L.PintoR. S.TeodoroJ. L.da SilvaL. X. N.MengerE.AlbertonC. L.et al. (2018). Cardiorespiratory adaptations in elderly men following different concurrent training regimes. J. Nutr. Health Aging22, 483–490. 10.1007/s12603-017-0958-4
Summary
Keywords
eccentric exercise, muscle architecture, muscle plasticity, triceps surae, ultrasonography
Citation
Geremia JM, Baroni BM, Bini RR, Lanferdini FJ, de Lima AR, Herzog W and Vaz MA (2020) Corrigendum: Triceps Surae Muscle Architecture Adaptations to Eccentric Training. Front. Physiol. 11:627. doi: 10.3389/fphys.2020.00627
Received
07 May 2020
Accepted
18 May 2020
Published
03 July 2020
Volume
11 - 2020
Edited and reviewed by
Adamantios Arampatzis, Humboldt University of Berlin, Germany
Updates
Copyright
© 2020 Geremia, Baroni, Bini, Lanferdini, de Lima, Herzog and Vaz.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Jeam Marcel Geremia jeam.geremia@ufrgs.br
This article was submitted to Exercise Physiology, a section of the journal Frontiers in Physiology
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