Publications

Authors:

Coratella, Giuseppe; Galas, Annalisa; Campa, Francesco; Pedrinolla, Anna; Schena, Federico; Venturelli, Massimo

Title:

The eccentric phase in unilateral resistance training enhances and preserves the contralateral knee extensors strength gains after detraining in women: a randomized controlled trial

Year:

2022

Type of item:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Language:

Inglese

Format:

Elettronico

Referee:

Sì

Name of journal:

FRONTIERS IN PHYSIOLOGY

ISSN of journal:

1664-042X

N° Volume:

13

Number or Folder:

788473

Page numbers:

1-7

Keyword:

concentric; cross-education effect; isokinetic; quadriceps; strength training; ultrasound; vastus lateralis

Short description of contents:

The current randomized controlled study investigated whether or not the inclusion of the eccentric phase in resistance training favors the contralateral strength gains after different unilateral protocols, and whether such gains are retained after detraining. Sixty healthy women were randomly assigned to a unilateral concentric-only (CONC), eccentric-only (ECC), concentric-eccentric (TRAD) volume-equated knee extension training or control group (CON). The participants trained 2 days/week for 8 weeks and then did not train for further 8 weeks. Knee extensors isokinetic concentric, eccentric, and isometric peak torque and vastus lateralis muscle thickness were assessed in the contralateral limb at baseline, post-training, and post-detraining. At post-training, concentric peak torque increased in CONC [+9.2%, 95%CI (+6.2/+12.3), p < 0.001, ES: 0.70, 95%CI (0.01/1.39)], ECC [+11.0% (+7.7/+14.2), p < 0.001: ES: 0.66(0.09/1.23)] and TRAD [+8.5%(+5.7/+11.6), p < 0.001, ES: 0.50(0.02/0.98)]. Eccentric peak torque increased in ECC in ECC [+15.0%(+11.4/+20.7), p < 0.001, ES: 0.91(0.14/1.63)] and TRAD [+5.5%(+0.3/10.7), p = 0.013, ES: 0.50(0.05/0.95)]. Isometric peak torque increased in ECC [+11.3(+5.8/16.8), p < 0.001, ES: 0.52(0.10/0.94)] and TRAD [+8.6%(+3.4/+13.7), p < 0.001, ES: 0.55(0.14/0.96)]. No change in eccentric and isometric peak torque occurred in CONC (p > 0.05). Muscle thickness did not change in any group (p > 0.05). At post-detraining, all groups preserved the contralateral strength gains observed at post-training (p < 0.05). The findings showed that ECC and TRAD increased contralateral knee extensors strength in concentric, eccentric, and isometric modality, while CONC only increased concentric strength. The eccentric phase appears to amplify the cross-education effect, permitting a transfer in strength gaining toward multiple testing modalities. Both eccentric-based and traditional eccentric-concentric resistance protocols are recommended to increase the contralateral retention in strength gains after a detraining period.

Web page:

https://doi.org/10.3389/fphys.2022.788473

Product ID:

125647

Handle IRIS:

11562/1061365

Last Modified:

November 15, 2022

Bibliographic citation:

Coratella, Giuseppe; Galas, Annalisa; Campa, Francesco; Pedrinolla, Anna; Schena, Federico; Venturelli, Massimo, The eccentric phase in unilateral resistance training enhances and preserves the contralateral knee extensors strength gains after detraining in women: a randomized controlled trial «FRONTIERS IN PHYSIOLOGY» , vol. 13 , n. 788473 , 2022 , pp. 1-7

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