Performance of a Novel Handheld Bioelectrical Impedance Device for Assessing Muscle Mass in Older Inpatients

Area of Science:

• Geriatric medicine
• Biomedical engineering
• Clinical diagnostics

Background:

• Sarcopenia screening is crucial for older adults.
• Accurate body composition assessment is needed for effective sarcopenia management.
• Bioelectrical impedance analysis (BIA) offers a portable method for body composition analysis.

Purpose of the Study:

• To compare the practicality and repeatability of a handheld BIA device against a state-of-the-art multisegmental BIA device.
• To evaluate the suitability of a handheld BIA device for sarcopenia screening in older inpatients.

Main Methods:

• A cross-sectional study was conducted in a geriatric rehabilitation hospital.
• Appendicular skeletal muscle mass index (ASMI) was measured in 207 inpatients (aged 70+) using either a handheld or a multisegmental BIA device.
• Repeatability was assessed using intra-class correlation (ICC) and Bland-Altman plots.

Main Results:

• The handheld BIA device exhibited a significantly higher measurement failure rate (31%) compared to the multisegmental device (0.9%).
• Poor agreement and repeatability were observed with the handheld BIA device, indicated by Bland-Altman plots.
• The handheld device demonstrated lower practicality and reliability for assessing muscle mass in this population.

Conclusions:

• The handheld BIA device is not a practical or reliable tool for muscle mass assessment in older rehabilitation inpatients.
• Multisegmental BIA devices are superior for accurate sarcopenia screening in this demographic.
• Further research may be needed to refine handheld BIA technology for geriatric populations.