Comparison of Upper Body Joint and Hand Motions in Eating Solid Foods With Chopsticks and Semisolid Foods With a Spoon in Healthy Males and Females: Observational Study.
Jun Nakatake, Shogo Maeda, Shigeaki Miyazaki and 2 others
PMID 41813425WHAT IT FOUND
Eating solid food with chopsticks requires less shoulder and neck movement but more elbow and forearm rotation than eating semisolid food with a spoon.
Hand movements are slower and cover less distance with chopsticks. These kinematic differences help clinicians select appropriate utensils.
Key findings
01Chopstick use involved smaller shoulder and neck joint angles and motions across feeding phases compared to spoon use.
02During the transporting phase, the hand traveled a shorter distance and moved at a lower speed when using chopsticks compared to a spoon.
03Elbow flexion and forearm pronation angles were generally greater or showed larger changes when using chopsticks, particularly during specific phases like reaching and transporting.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The study used healthy participants, so the kinematic patterns may not directly apply to patients with neurological or musculoskeletal disorders. The specific foods used (pickles and yogurt) may not represent the full range of solid and semisolid textures encountered in clinical practice. The cross-sectional design compares two distinct utensil-food pairings, so differences in movement could be due to the utensil, the food type, or the combination of both. Sensor placement and potential skin artifacts or slipping could have affected the accuracy of joint angle data. The study was conducted in a laboratory setting with standardized seating and bowl placement, which may not reflect naturalistic dining environments.
Declared interests
Funding was provided by a clinical research support grant from the University of Miyazaki Hospital. The authors declared no conflicts of interest.
The easy way to misread this
Do not assume these kinematic differences apply directly to patients with upper limb impairments without individual assessment. The study measured healthy adults, and patients with paresis or coordination deficits may exhibit entirely different movement patterns or compensations when using these utensils.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →