Abstract:
:It has previously been shown that extreme changes in ambient air temperature can affect whole-body bioelectrical impedance. The purpose of this study was to determine if more moderate changes in ambient air temperature, such as those experienced in most laboratory settings, would also affect bioelectric impedance analysis (BIA). In addition, to elucidate the mechanism responsible for changes in BIA with ambient air temperature, both skin blood flow (SBF) and the electrode-skin interface temperature were independently manipulated to determine their effect on BIA. During the first part of the study, nine healthy volunteers had their BIA measured in five different ambient air temperatures (15, 20, 25, 30 and 35 degrees C). Mean BIA was 513 ohms under the 15 degrees C condition and decreased significantly (p < 0.05) to 486 ohms in the 35 degrees C trial. However, no significant change was found in mean BIA between the 20 and 25 degrees C trials, which is the temperature range seen in most laboratories. Thus, moderate changes in ambient air temperature have only minor effects on BIA. In the second and third parts of the study, the electrode-skin interface temperature and SBF were independently manipulated using ice packs and electric heating pads placed over the four BIA electrodes. The results showed that BIA was inversely related to SBF (r = -0.95), and strongly suggest that changes in SBF, not electrode-skin interface temperature, are responsible for the changes seen in BIA.
journal_name
Physiol Measjournal_title
Physiological measurementauthors
Buono MJ,Burke S,Endemann S,Graham H,Gressard C,Griswold L,Michalewicz Bdoi
10.1088/0967-3334/25/1/011subject
Has Abstractpub_date
2004-02-01 00:00:00pages
119-23issue
1eissn
0967-3334issn
1361-6579journal_volume
25pub_type
杂志文章abstract::Reliability of cerebral blood flow velocity (CBFV) and dynamic cerebral autoregulation estimates (expressed as autoregulation index: ARI) using spontaneous fluctuations in blood pressure (BP) has been demonstrated. However, reliability during co-administration of O2 and CO2 is unknown. Bilateral CBFV (using transcrani...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/37/5/673
更新日期:2016-05-01 00:00:00
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journal_title:Physiological measurement
pub_type: 临床试验,杂志文章
doi:10.1088/0967-3334/31/6/007
更新日期:2010-06-01 00:00:00
abstract::Heart rate variability (HRV) is often analysed using short-term studies. Our objective was to compare two of them in a group of diabetic patients (reduced HRV) and in a control group. From the same 10 min surface electrocardiogram (ECG) two recordings were obtained. In one of them the whole signal was acquired through...
journal_title:Physiological measurement
pub_type: 临床试验,杂志文章
doi:10.1088/0967-3334/25/6/n01
更新日期:2004-12-01 00:00:00
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journal_title:Physiological measurement
pub_type: 临床试验,杂志文章
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更新日期:2012-02-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章,评审
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更新日期:2016-05-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
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更新日期:2007-01-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/22/3/318
更新日期:2001-08-01 00:00:00
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更新日期:2015-06-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
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更新日期:1993-02-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/ab0daa
更新日期:2019-04-03 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/35/6/1035
更新日期:2014-06-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/26/4/001
更新日期:2005-08-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/ab5154
更新日期:2019-12-03 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/29/12/004
更新日期:2008-12-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/35/11/2319
更新日期:2014-11-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/35/6/1149
更新日期:2014-06-01 00:00:00
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pub_type: 杂志文章
doi:10.1088/0967-3334/22/4/401
更新日期:2001-11-01 00:00:00
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journal_title:Physiological measurement
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doi:10.1088/1361-6579/ab9b67
更新日期:2020-08-11 00:00:00
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pub_type: 杂志文章
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更新日期:2018-04-26 00:00:00
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更新日期:2011-01-01 00:00:00
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更新日期:2021-01-22 00:00:00
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journal_title:Physiological measurement
pub_type: 临床试验,杂志文章
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更新日期:1994-11-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/35/7/1439
更新日期:2014-07-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/ab525c
更新日期:2019-12-02 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/37/6/765
更新日期:2016-06-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/23/4/309
更新日期:2002-11-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/23/2/314
更新日期:2002-05-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/38/2/310
更新日期:2017-02-01 00:00:00
abstract::Remote sensing of the reflectance photoplethysmogram using a video camera typically positioned 1 m away from the patient's face is a promising method for monitoring the vital signs of patients without attaching any electrodes or sensors to them. Most of the papers in the literature on non-contact vital sign monitoring...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/35/5/807
更新日期:2014-05-01 00:00:00