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Comparison of individual and group-based load-velocity profiling as a means to dictate training load over a six-week strength and power intervention

Authors:

Abstract

An experimental study exploring the impact of six weeks resistance training utilising two different velocity-based loading methods on maximal strength in trained males. This study explored the use of individual load-velocity profiling vs. group load-velocity profiling
COMPARISON OF INDIVIDUAL AND GROUP-BASED
LOAD-VELOCITY PROFILING AS A MEANS TO DICTATE
TRAINING LOAD OVER A SIX-WEEK STRENGTH AND
POWER INTERVENTION
Harry F. Dorrell, Joseph M. Moore, & Thomas I.
Gee
School of Sport and Exercise Science, University of Lincoln,
Lincoln, UK

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al., 2016)
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(Weakley et al., 2017)
. / )1  
(Dorrell et al., 2018)
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8188
8158
8198
81:8
81<8
188
158
198
Relative % 1RM
M e a n c o n c e n tr ic ve lo c it y ( m . s -1 )
Mean data line
Velocity zone
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8188
8158
8198
81:8
81<8
188
158
198
Relative % 1RM
M e a n c o n c e n tr ic ve lo c it y ( m . s -1 )
80%
1RM
0.60
ms-1
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velocity-based loading methods
)six-week strength and
power intervention
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818 8175
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818 8156
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818 8175
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$0' 681:@5917 : 19@5615 ;15 O
818 8197
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8186 815
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100
150
200
250
ILVP - 1-RM (kg)
a)
Pre Post
100
150
200
250
GLVP - 1-RM (kg)
25
35
45
55
ILVP - CMJ (cm)
b)
Pre Post
25
35
45
55
GLVP - CMJ (cm)
20
30
40
50
ILVP - SSJ (cm)
c)
Pre Post
20
30
40
50
GLVP - SSJ (cm)
65
80
95
110
125
140
ILVP - SBJ (cm)
d)
Pre Post
65
80
95
110
125
140
GLVP - SBJ (cm)
Back squat CMJ SSJ SBJ
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Thank you for listening
Harry F. Dorrell
hdorrell@lincoln.ac.uk
@harry_dorrell
... Velocity-based training and RPE-based training research is limited compared with percentage-and RM-based load prescription (38). However, preliminary longitudinal studies have shown additional strength benefits with both VBT and RPE-based loading (9,16,23). Specifically, Dorrell et al. (9) observed significantly greater increases in bench press 1RM in a group of trained men using VBT for load prescription compared with percentage-based loading. Furthermore, Helms et al. (23) reported a possibly meaningful effect size (ES) difference in favor of RPE loading versus percentage loading for back squat and bench press 1RM over 8 weeks, while Graham and Cleather (16) found significantly greater front squat and back squat 1RM increases with RIR-based RPE loading compared with percentage loading. ...
... However, preliminary longitudinal studies have shown additional strength benefits with both VBT and RPE-based loading (9,16,23). Specifically, Dorrell et al. (9) observed significantly greater increases in bench press 1RM in a group of trained men using VBT for load prescription compared with percentage-based loading. Furthermore, Helms et al. (23) reported a possibly meaningful effect size (ES) difference in favor of RPE loading versus percentage loading for back squat and bench press 1RM over 8 weeks, while Graham and Cleather (16) found significantly greater front squat and back squat 1RM increases with RIR-based RPE loading compared with percentage loading. ...
Article
Full-text available
Odgers, JB, Zourdos, MC, Helms, ER, Candow, DG, Dahlstrom, B, Bruno, P, and Sousa, CA. Rating of perceived exertion and velocity relationships among trained males and females in the front squat and hexagonal bar deadlift. J Strength Cond Res 35(2S): S23-S30, 2021-This study examined the accuracy of intraset rating of perceived exertion (RPE) to predict repetitions in reserve (RIR) during sets to failure at 80% of 1 repetition maximum (1RM) on the front squat and high-handle hexagonal bar deadlift (HHBD). Furthermore, the relationship between RPE and average concentric velocity (ACV) during the sets to failure was also determined. Fourteen males (29 ± 6 years, front squat relative 1RM: 1.78 ± 0.2 kg·kg-1, and HHBD relative 1RM: 3.0 ± 0.1 kg·kg-1) and 13 females (30 ± 5 years, front squat relative 1RM: 1.60 ± 0.2 kg·kg-1, and HHBD relative 1RM: 2.5 ± 0.3 kg·kg-1) visited the laboratory 3 times. The first visit tested 1RM on both exercises. During visits 2 and 3, which were performed in a counterbalanced order, subjects performed 4 sets to failure at 80% of 1RM for both exercises. During each set, subjects verbally indicated when they believed they were at "6" and "9" on the RIR-based RPE scale, and ACV was assessed during every repetition. The difference between the actual and predicted repetitions performed was recorded as the RPE difference (RPEDIFF). The RPEDIFF was significantly (p < 0.001) lower at the called 9 RPE versus the called 6 RPE in the front squat for males (9 RPE: 0.09 ± 0.19 versus 6 RPE: 0.71 ± 0.70) and females (9 RPE: 0.19 ± 0.36 versus 6 RPE: 0.86 ± 0.88) and in the HHBD for males (9 RPE: 0.25 ± 0.46 versus 6 RPE: 1.00 ± 1.12) and females (9 RPE: 0.21 ± 0.44 versus 6 RPE: 1.19 ± 1.16). Significant inverse relationships existed between RPE and ACV during both exercises (r = -0.98 to -1.00). These results indicate that well-trained males and females can gauge intraset RPE accurately during moderate repetition sets on the front squat and HHBD.
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