Hammer Strength Plate Loaded Linear Leg PressPhoto: Fitness For Life México
Model code
HSLLP
Movement
Leg press
Type
Plate-loaded
Muscles
QuadsGlutesHamstrings

Starting weight and manufacturer load specs

Starting weight (starting resistance) is what the empty lever or sled already weighs on you before any plate is loaded, as stated by the manufacturer below with its source and date. Plate-loaded starting weight by brand

Starting resistance 118 lb · 53 kg
as stated (no conversion)
Manufacturer118 lbs (53 kg)
Starting Resistance

Mechanical model Estimate computed

F = SR + P·sin(θ) ± μ·(SR·cot θ + P·cos θ)

3 input(s) sourced · 0 to measure on site · explicit assumption on the band of: θ

No cam or lever in this model, so the force is the same at the start, mid and end of the movement. Table shows mid-range values.

Derivation & sources Measurement protocol (French)

Measured / estimated resistance points

Machine setting (pin / plates)Position in range of motionResistance at the handle/pad (measured or estimated)Confidence and dateReview status
0 kgMid-range53.52 kg
Error band: 52.7–54.3 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
20 kgMid-range67.67 kg
Error band: 66.5–68.8 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
40 kgMid-range81.81 kg
Error band: 80.2–83.3 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
60 kgMid-range95.95 kg
Error band: 94.0–97.8 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
80 kgMid-range110.09 kg
Error band: 107.7–112.4 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
100 kgMid-range124.23 kg
Error band: 121.5–126.9 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
120 kgMid-range138.38 kg
Error band: 135.2–141.4 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
140 kgMid-range152.52 kg
Error band: 149.0–155.9 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
160 kgMid-range166.66 kg
Error band: 162.7–170.5 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
180 kgMid-range180.8 kg
Error band: 176.5–185.0 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
200 kgMid-range194.95 kg
Error band: 190.2–199.5 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
250 kgMid-range230.3 kg
Error band: 224.6–235.8 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
300 kgMid-range265.66 kg
Error band: 259.0–272.2 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
400 kgMid-range336.37 kg
Error band: 327.7–344.8 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
500 kgMid-range407.08 kg
Error band: 396.5–417.4 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
600 kgMid-range477.79 kg
Error band: 465.2–490.0 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
700 kgMid-range548.5 kg
Error band: 534.0–562.7 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved
800 kgMid-range619.21 kg
Error band: 602.7–635.3 kg
Estimated
Method: incline sled model · Derivation & sources
Computed 2026-10-17
Approved

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