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Transactions of the Institute of Measurement and Control
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Physiological measurements in smart clothing: a case study of total body water estimation with bioimpedance

Jaana Hännikäinen

Tampere University of Technology/Institute of Electronics, Korkeakoulunkatu 3, FIN-33720 Tampere, Finland, jaana.hannikainen{at}tut.fi

Timo Vuorela

Tampere University of Technology/Institute of Electronics, Korkeakoulunkatu 3, FIN-33720 Tampere, Finland

Jukka Vanhala

Tampere University of Technology/Institute of Electronics, Korkeakoulunkatu 3, FIN-33720 Tampere, Finland

A wearable physiological bioimpedance measurement system has been designed and implemented. Measured bioimpedance values can be utilized for total body water (TBW) estimation. This information can be useful for, eg, athletes whose performance weakens due to dehydration. The system is integrated into a sport suit and its functionality has been tested by performing walking, fitness cycling and running tests. Also reference tests in a sauna have been performed. Altogether, nine persons have been participating in tests. During long-term exercising, TBW values were decreased. However, more tests are needed in order to analyse the measurement results accurately.

Key Words: bioimpedance • physiological measurement • smart clothing • total body water.

Transactions of the Institute of Measurement and Control, Vol. 29, No. 3-4, 337-354 (2007)
DOI: 10.1177/0142331207073488
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