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Int J Sports Med 2022; 43(12): 1033-1042
DOI: 10.1055/a-1834-6693
Training & Testing

Movement Velocity as a Determinant of Actual Intensity in Resistance Exercise

Juan Manuel Yáñez García 
1   Department os Sport and Informatic, Universidad Pablo de Olavide, Seville, Spain
,
Ricardo Mora-Custodio
1   Department os Sport and Informatic, Universidad Pablo de Olavide, Seville, Spain
,
Juan Ribas-Serna
2   Department of Medical Physiology and Biophysics, Universidad de Sevilla, Sevilla, Spain
3   Research, development and innovation (R&D+i) Area, Investigation in Medicine and Sport department, Sevilla Football Club, Seville, Spain
,
Juan José González-Badillo
1   Department os Sport and Informatic, Universidad Pablo de Olavide, Seville, Spain
3   Research, development and innovation (R&D+i) Area, Investigation in Medicine and Sport department, Sevilla Football Club, Seville, Spain
,
David Rodríguez-Rosell
1   Department os Sport and Informatic, Universidad Pablo de Olavide, Seville, Spain
3   Research, development and innovation (R&D+i) Area, Investigation in Medicine and Sport department, Sevilla Football Club, Seville, Spain
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Abstract

This study aimed to analyze the acute mechanical, metabolic and EMG response to five resistance exercise protocols (REP) in the full squat (SQ) exercise performed with two velocity conditions: maximal intended velocity (MaxV) vs. half-maximal velocity (HalfV). Eleven resistance-trained men performed 10 REP (5 with each velocity conditions) in random order (72–96 h apart). The REP consisted of three sets of 8–3 repetitions against 45–65% 1RM. The percent change in countermovement jump (CMJ) height, velocity attained with the load that elicited a ~1.00 m·s−1 (V1-load), surface EMG variables and blood lactate concentration were assessed pre- vs. post-exercise protocols. MaxV resulted in greater percent changes (Δ: 12–25%) and intra-condition effect sizes (ES: 0.76–4.84) in loss of V1-load and CMJ height compared to HalfV (Δ: 10–16%; ES: 0.65–3.90) following all REP. In addition, MaxV showed higher post-exercise lactate concentration than HalfV (ES: 0.46–0.83; p<0.05). For EMG variables, only the Dimitrov index resulted in relevant changes after each REP, with MaxV showing greater magnitude of changes (23–38%) than HalfV (12–25%) across all REP. These results suggest that voluntary movement velocity is a key aspect to consider since it clearly determines the overall training intensity during resistance exercise.

Key words

maximal intended velocity - resistance training - degree of fatigue - metabolic stress - neural response


Publikationsverlauf

Eingereicht: 21. Dezember 2021

Angenommen: 20. April 2022

Accepted Manuscript online:
25. April 2022

Artikel online veröffentlicht:
22. Juli 2022

© 2022. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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