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Difference in kinematics and kinetics between high- and low-velocity resistance loading equated by volume: implications for hypertrophy training.
J Strength Cond Res. 2012 Jan; 26(1):269-75.JS

Abstract

Although it is generally accepted that a high load is necessary for muscle hypertrophy, it is possible that a low load with a high velocity results in greater kinematics and kinetics than does a high load with a slow velocity. The purpose of this study was to determine if 2 training loads (35 and 70% 1 repetition maximum [1RM]) equated by volume, differed in terms of their session kinematic and kinetic characteristics. Twelve subjects were recruited in this acute randomized within-subject crossover design study. Two bouts of a half-squat exercise were performed 1 week apart, one with high load-low velocity (HLLV = 3 sets of 12 reps at 70% 1RM) and the other with low-load high-velocity (LLHV = 6 sets of 12 reps at 35% 1RM). Time under tension (TUT), average force, peak force (PF), average power (AP), peak power (PP), work (TW), and total impulse (TI) were calculated and compared between loads for the eccentric and concentric phases. For average eccentric and concentric single repetition values, significantly (p < 0.05) greater (∼15-22%) PP outputs were associated with the LLHV loading, whereas significantly greater (∼7-61%) values were associated with the HLLV condition for most other variables of interest. However, in terms of total session kinematics and kinetics, the LLHV protocol resulted in significantly greater (∼16-61%) eccentric and concentric TUT, PF, AP, PP, and TW. The only variable that was significantly greater for the HLLV protocol than for the LLHV protocol was TI (∼20-24%). From these results, it seems that the LLHV protocol may offer an equal if not better training stimulus for muscular adaptation than the HLLV protocol, because of the greater time under tension, power, force, and work output when the total volume of the exercise is equated.

Authors+Show Affiliations

School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia. nur.ikhwan@fsskj.upsi.edu.myNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

22158146

Citation

Mohamad, Nur Ikhwan, et al. "Difference in Kinematics and Kinetics Between High- and Low-velocity Resistance Loading Equated By Volume: Implications for Hypertrophy Training." Journal of Strength and Conditioning Research, vol. 26, no. 1, 2012, pp. 269-75.
Mohamad NI, Cronin JB, Nosaka KK. Difference in kinematics and kinetics between high- and low-velocity resistance loading equated by volume: implications for hypertrophy training. J Strength Cond Res. 2012;26(1):269-75.
Mohamad, N. I., Cronin, J. B., & Nosaka, K. K. (2012). Difference in kinematics and kinetics between high- and low-velocity resistance loading equated by volume: implications for hypertrophy training. Journal of Strength and Conditioning Research, 26(1), 269-75. https://doi.org/10.1519/JSC.0b013e31821f48de
Mohamad NI, Cronin JB, Nosaka KK. Difference in Kinematics and Kinetics Between High- and Low-velocity Resistance Loading Equated By Volume: Implications for Hypertrophy Training. J Strength Cond Res. 2012;26(1):269-75. PubMed PMID: 22158146.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Difference in kinematics and kinetics between high- and low-velocity resistance loading equated by volume: implications for hypertrophy training. AU - Mohamad,Nur Ikhwan, AU - Cronin,John B, AU - Nosaka,Ken K, PY - 2011/12/14/entrez PY - 2011/12/14/pubmed PY - 2012/4/26/medline SP - 269 EP - 75 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 26 IS - 1 N2 - Although it is generally accepted that a high load is necessary for muscle hypertrophy, it is possible that a low load with a high velocity results in greater kinematics and kinetics than does a high load with a slow velocity. The purpose of this study was to determine if 2 training loads (35 and 70% 1 repetition maximum [1RM]) equated by volume, differed in terms of their session kinematic and kinetic characteristics. Twelve subjects were recruited in this acute randomized within-subject crossover design study. Two bouts of a half-squat exercise were performed 1 week apart, one with high load-low velocity (HLLV = 3 sets of 12 reps at 70% 1RM) and the other with low-load high-velocity (LLHV = 6 sets of 12 reps at 35% 1RM). Time under tension (TUT), average force, peak force (PF), average power (AP), peak power (PP), work (TW), and total impulse (TI) were calculated and compared between loads for the eccentric and concentric phases. For average eccentric and concentric single repetition values, significantly (p < 0.05) greater (∼15-22%) PP outputs were associated with the LLHV loading, whereas significantly greater (∼7-61%) values were associated with the HLLV condition for most other variables of interest. However, in terms of total session kinematics and kinetics, the LLHV protocol resulted in significantly greater (∼16-61%) eccentric and concentric TUT, PF, AP, PP, and TW. The only variable that was significantly greater for the HLLV protocol than for the LLHV protocol was TI (∼20-24%). From these results, it seems that the LLHV protocol may offer an equal if not better training stimulus for muscular adaptation than the HLLV protocol, because of the greater time under tension, power, force, and work output when the total volume of the exercise is equated. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/22158146/Difference_in_kinematics_and_kinetics_between_high__and_low_velocity_resistance_loading_equated_by_volume:_implications_for_hypertrophy_training_ L2 - http://dx.doi.org/10.1519/JSC.0b013e31821f48de DB - PRIME DP - Unbound Medicine ER -