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Movement Velocity as a Determinant of Actual Intensity in Resistance Exercise.
- Source :
-
International Journal of Sports Medicine . Nov2022, Vol. 43 Issue 12, p1033-1042. 10p. - Publication Year :
- 2022
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01724622
- Volume :
- 43
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- International Journal of Sports Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 159949892
- Full Text :
- https://doi.org/10.1055/a-1834-6693