When people get both a visual target and a gentle push from the robot at the same time, they hit the target more accurately and with less muscle strain than when they get only one kind of cue.

Scientific Claim

In healthy adults, combined visual-force feedback during unilateral active training is associated with the lowest tracking error (6.6 ± 0.8 mm) and lowest muscle activation (0.53 ± 0.13) during circular tasks, suggesting that multimodal feedback may optimize movement precision while reducing muscular effort.

Original Statement

“UAT with multi-modality (visual-force) feedback (TE: 6.6 ± 0.8 mm; activation level: 0.53 ± 0.13) (p < 0.01).”

From study:Effective unilateral/bilateral robot-assisted training for upper limb motor function rehabilitation: a cross-sectional study

Evidence Quality Assessment

Claim Status

overstated

Study Design Support

Design supports claim

Appropriate Language Strength

association

Can only show association/correlation

Assessment Explanation

The authors imply this is an 'optimal strategy' for clinical use, but the study only involved healthy adults. The verb should reflect association, not clinical optimization.

Evidence from Studies

Supporting (1)

Effective unilateral/bilateral robot-assisted training for upper limb motor function rehabilitation: a cross-sectional study

Cross-Sectional Study

Human

2025

The study found that when people moved their arm in circles with both visual and force feedback together, they made fewer mistakes and used less muscle effort than when they got only one type of feedback — exactly what the claim says.

Contradicting (0)

No contradicting evidence found

Source Study

Effective unilateral/bilateral robot-assisted training for upper limb motor function rehabilitation: a cross-sectional study

Score: 33

DOI: 10.3389/fnhum.2025.1571624

Similar Assertions

When healthy people move their arm with a robot using just one kind of feedback (like seeing a target or feeling resistance), they make more mistakes and use more muscle effort than when they get both kinds of feedback at once.

94%

When people try to move their arm with a robot and can’t see or feel where they’re supposed to go, they miss the target by a lot—much more than when they get visual or force cues.

83%

When people’s arms are moved by a robot without seeing where they’re supposed to go, their muscles don’t work as hard as when they can see the target path—even if they’re not moving on their own.

82%

When both arms are moved together by a robot while watching a screen, healthy people’s muscles work harder than when only one arm is moved, even if they’re not trying to move it themselves.

81%

Even though both arms are just being moved by the robot, people feel like they’re working harder mentally when both arms are moving together than when only one arm is moving.

74%