Helder 2 quad / hamstring protocol — 20 cm · 20 min per session · Body mode

DeviceHelder 2 (AriHelder)
Distance20 cm
ModeBody mode · full power
Duration20 min per session
FrequencyDaily or 5× / week
Wavelengths631 nm red · 856 nm NIR
✓ OHSP Verified Verified output: 10.47W total — NIR 9,242 mW + Red 1,228 mW. Independent integrating sphere measurement →

How to position the device

Attach to the arm mount. Position 20cm from the thigh. For quads, target the anterior thigh. For hamstrings, target the posterior thigh. One session per muscle group.

1

Set up the device

Attach to the arm mount. Position 20cm from the thigh. For quads, target the anterior thigh. For hamstrings, target the posterior thigh. One session per muscle group.

2

Select body mode

Set to body mode, full power. Verified output: 10.47W total — NIR 9,242mW (856nm) + Red 1,228mW (631nm).

3

Run the session

Hold position for 20 minutes per muscle group. Wear eye protection. For both quad and hamstring in the same day, two separate 20-minute sessions.

Session guidance

The quad and hamstring are large muscle groups — the arm mount's hands-free design is especially useful here. For post-workout recovery, sessions within 30 minutes of training are common in the PBM literature.

Safety & contraindications Do not use over open wounds or active injury requiring immobilisation. Always wear eye protection.

Frequently asked questions

Front (anterior) for quads. Back (posterior) for hamstrings. Use separate sessions for each.
20 minutes per muscle group in body mode.
Post-workout within 30 minutes is the standard recovery timing. Pre-workout priming sessions (20 min before) are also used.
10.47W total — OHSP verified. NIR (856nm): 9,242mW. Red (631nm): 1,228mW.