Moderating factors in tissue tonometry and bioimpedance spectroscopy measures in the lower extremity of healthy young people in Australia and Myanmar

Douglass, Janet, Graves, Patricia, and Gordon, Susan (2017) Moderating factors in tissue tonometry and bioimpedance spectroscopy measures in the lower extremity of healthy young people in Australia and Myanmar. Lymphatic Research and Biology, 16 (3). pp. 309-316.

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View at Publisher Website: https://doi.org/10.1089/lrb.2017.0057
 
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Abstract

Background: Expected values for tissue tonometry and bioimpedance spectroscopy (BIS) in the lower extremity of young people have not been established. These measures are commonly used to assess tissue changes in adult, breast cancer-related lymphedema of the arm. In tropical regions, identification of tissue changes in the lower limbs related to lymphatic filariasis is required; hence expected values and factors contributing to variation in tissue tonometry and BIS in two tropical populations were investigated.

Methods and Results: A convenience sample of healthy volunteers aged 8–21 in Myanmar and Australia was recruited. Tissue compressibility at the calf and anterior and posterior thigh was measured using three tonometry devices and free fluid in each leg was assessed using BIS. Data were collected about possible modifiers: leg dominance, age, gender, body mass index (BMI), hydration, and menstrual cycle. Paired t-test and linear regression compared the objective measures with possible modifiers within each population. Statistical significance was set at p < 0.05 with a 95% confidence interval. In Myanmar, increases in free fluid, tissue compressibility, and limb circumference were associated with being older, female, underweight, or in the second half of the menstrual cycle. In young Australians, increases in tissue compressibility and limb circumference were associated with being older or in the second half of the menstrual cycle.

Conclusion: When assessing tissue compressibility and free fluid in young people using tonometry and gender, BIS, limb dominance and BMI should be considered in a local context and attempts should be made to minimize the potential influences of hydration and the female menstrual cycle.

Item ID: 55173
Item Type: Article (Research - C1)
ISSN: 1557-8585
Keywords: tonometry methods, electric impedance, body composition, lower extremity, geographic factor
Copyright Information: Copyright © 2018, Mary Ann Liebert, Inc.
Date Deposited: 22 Aug 2018 09:12
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1116 Medical Physiology > 111603 Systems Physiology @ 25%
11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111799 Public Health and Health Services not elsewhere classified @ 50%
11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111706 Epidemiology @ 25%
SEO Codes: 92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920199 Clinical Health (Organs, Diseases and Abnormal Conditions) not elsewhere classified @ 50%
92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920403 Disability and Functional Capacity @ 50%
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