. 2024 Mar 21;10(7):e28298. doi: 10.1016/j.heliyon.2024.e28298

Table 2.

Concurrent variables to validate the perceived exertion (RISE) for velocity-based training when relative strength was considered.

Variable		40% 1RM		55% 1RM		70% 1RM		85% 1RM
Variable		High	Normal	High	Normal	High	Normal	High	Normal
RISE [[1], [2], [3], [4], [5]]	First rep	1.09 (0.30)	1.29 (0.49)	1.64 (0.81)	2.00 (0.58)¹	2.45 (0.82)^1,2	2.71 (0.49)¹	2.91 (1.04)^1,2	3.43 (0.53)^1,2
RISE [[1], [2], [3], [4], [5]]	Last rep	2.09 (0.83)*	2.57 (1.13)*	2.64 (0.81)*	2.71 (0.49)*	3.18 (0.60)*	3.14 (0.38)¹	3.64 (0.67)*^1,2	3.71 (0.49)²
MPV (m/s)	First rep	1.02 (0.55)	0.83 (0.14)^†	0.95 (0.52)¹	0.82 (0.10)^†	0.83 (0.09)^1,2	0.75 (0.10)¹	0.75 (0.09)^1,2,3	0.69 (0.10)^1,2,3
MPV (m/s)	Last rep	0.88 (0.56)*	0.72 (0.12)*^†	0.82 (0.54)*¹	0.72 (0.10)*^†	0.72 (0.09)*^1,2	0.65 (0.11)*^1,2	0.65 (0.08)*^1,2,3	0.60 (0.09)*^1,2,3
P_MAX (W)	First rep	498.02 (92.51)	268.68 (113.15)^†	635.55 (124.70)¹	364.70 (133.10)^†,1	695.75 (110.77)¹	427.66 (166.76)^†1	762.72 (154.21)^1,2,3	471.84 (192.13)^†,1,2
P_MAX (W)	Last rep	428.80 (93.38)*	239.91 (99.34)*^†	550.18 (113.58)*¹	321.01 (121.19)*^†,1	607.93 (98.32)*,¹	368.28 (153.29)*^†1	666.63 (131.54)*^1,2,3	413.81 (166.67)*^†,1,2,3
Weight (kg)		49.20 (10.00)	32.43 (8.10)^†	67.60 (12.59)¹	44.14 (10.86)^†1	85.75 (16.42)^1,2	56.29 (14.28)^†,1,2	102.25 (21.71)^1,2,3	68.00 (17.20)^1,2,3
Reps		14.90 (2.64)	17.71 (4.35)^†	11.40 (0.97)1	13.14 (2.41)^†	7.40 (1.65)^1,2	9.43 (1.40)^†,1,2	5.70 (1.83)^1,2	6.14 (2.12)^1,2,3
Heart Rate (bpm)		155.60 (17.88)	154.57 (9.55)	156.10 (16.58)	152.86 (7.45)	153.20 (16.43)	154.57 (8.79)	152.10 (14.56)	147.29 (6.80)^†2
Results are presented as mean and standard deviation in parenthesis. High: subjects with high relative strength. Normal: subjects with normal relative strength. ^1-4: Statistically significant difference compared to those performed with the perceptual value indicated by that number (i.e., 1: 40%1RM; 2: 55%1RM; 3: 70%1RM; 4: 85% 1RM). * Very significant differences (p < 0.01) with the first repetition in each intensity. † Significant differences (p < 0.05) in the same intensity when normal relative strength subjects were compared to their higher counterparts in each variable. MPV: mean propulsive velocity; P_MAX: maximum power. The perceived exertion is measured through the Resistance Intensity Scale for Exercise, with numerical values [[1], [2], [3], [4], [5]]: 1 = easy; 2 = low; 3 = moderate; 4 = hard; 5 = maximal).