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Dose-response evaluation of the Cray X generation-4 active back exoskeleton: 14 participants stoop-lifted a 15 kg box at support levels from 0 to 100% in 10% steps plus a no-device condition while bilateral erector spinae EMG was recorded (Frontiers in Bioengineering and Biotechnology, 2023). Rare graded-assistance dataset; raw data available from the authors without undue reservation.

Details

Subjects

n = 14 · 3F / 11M · 22.3 ± 1.1

Setting

Laboratory (controlled or simulated)

Protocol / load

Stoop lifting of a 15 kg box (40 x 30 x 22 cm) at 11 graded support levels

Equipment

BTS FREEEMG 1000 bilateral erector spinae EMG (1000 Hz); 30 Hz video for phase demarcation; Borg RPE

Sampling

emg 1000 Hz · video 30 Hz

License

Raw data from the authors without undue reservation

Keywords

exoskeleton, back, active-exoskeleton, lifting, support-levels, semg

Added to catalog

2026-09-01

Publications

• Walter T., Stutzig N., Siebert T. (2023). Active exoskeleton reduces erector spinae muscle activity during lifting. Front. Bioeng. Biotechnol. 11:1143926~22% erector spinae EMG reduction at maximum support vs. no exoskeleton.

Exoskeleton

Record type

Device evaluation

Device(s)

Cray X (German Bionic)

Body region

Back

Actuation

Active

Study design

Support levels 0-100% in 10% steps plus no-exoskeleton condition, stoop lifting, within-subject

Outcomes

Muscle activity (EMG), Subjective ratings

This record is part of the exoskeleton collection.

Cite

Cite the dataset as its authors request (check the source page for an official citation); this BibTeX is a convenience starting point.

@misc{walter-crayx-support-levels,
  author = {Walter, T. and Stutzig, N. and Siebert, T.},
  title  = {{Cray X Active Back Exoskeleton: Erector Spinae EMG Across 11 Support Levels}},
  year   = {2023},
  url    = {https://doi.org/10.3389/fbioe.2023.1143926},
}