Abstract:
:The purpose of this study was to determine the validity and reliability of a timed 5 km cycle ergometer ride to predict maximum oxygen uptake (VO2max). Fifty-two healthy volunteers had their VO2max determined during a maximal treadmill run. They also performed a timed 5 km cycle ergometer ride. The resistance setting for the cycle ride was set at a rate of 0.5 kg/20 kg body weight. A significant inverse relationship was found between the logarithm of cycle time and VO2max (r = -0.83). Furthermore, the test-retest reliability for the 5 km ride was determined to be r = 0.93 (n = 20). These results suggest that a timed 5 km cycle ergometer ride is a valid and reliable predictor of VO2max. Furthermore, the timed cycle ride offers several methodological advantages which makes it potentially useful in clinical, military, and research settings.
journal_name
Physiol Measjournal_title
Physiological measurementauthors
Buono MJ,Borin TL,Sjoholm NT,Hodgdon JAdoi
10.1088/0967-3334/17/4/009subject
Has Abstractpub_date
1996-11-01 00:00:00pages
313-7issue
4eissn
0967-3334issn
1361-6579journal_volume
17pub_type
临床试验,杂志文章,随机对照试验abstract::We investigated five different methods which can be applied to quantitatively construct functional tomograms of the lungs. The focus was on the sensitivity of functional tomograms to errors in acquired data. To quantify this sensitivity, theoretical, error-free data sets of well-known properties were artificially gene...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/31/8/S06
更新日期:2010-08-01 00:00:00
abstract::The results of a preliminary clinical evaluation of a one-frequency electrical impedance tomography (EIT) system enabling static in vivo imaging are presented. The design of the measuring system and image reconstruction software are described. Thirty-one subjects were examined and divided into four clinical groups. Th...
journal_title:Physiological measurement
pub_type: 临床试验,杂志文章
doi:10.1088/0967-3334/23/1/304
更新日期:2002-02-01 00:00:00
abstract::High-frequency percussive ventilation (HFPV) may be defined as flow-regulated time-cycled ventilation that creates controlled pressure and delivers a series of high-frequency subtidal volumes in combination with low-frequency breathing cycles. In recent years, the usefulness of HFPV has been clinically assessed as an ...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/32/6/002
更新日期:2011-06-01 00:00:00
abstract::Energy scavenging has increasingly become an interesting option for powering electronic devices because of the almost infinite lifetime and the non-dependence on fuels for energy generation. Moreover, the rise of wireless technologies promises new applications in medical monitoring systems, but these still face limita...
journal_title:Physiological measurement
pub_type: 杂志文章,评审
doi:10.1088/0967-3334/30/9/R01
更新日期:2009-09-01 00:00:00
abstract::Cooperative sensors is a novel measurement architecture that allows the acquiring of biopotential signals on patients in a comfortable and easy-to-integrate manner. The novel sensors are defined as cooperative in the sense that at least two of them work in concert to measure a target physiological signal, such as a mu...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/36/4/767
更新日期:2015-04-01 00:00:00
abstract::In order to detect minute amounts of glucose in diluted urine, we applied the Raman spectroscopy method. To simulate abnormal diluted urine in a toilet bowl, we diluted normal urine ten-fold with water and added glucose up to 8 mg dl(-1). Data were collected using a low-resolution Raman spectrometer that was preproces...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/28/5/011
更新日期:2007-05-01 00:00:00
abstract::Electrical impedance tomography (EIT) measures the conductivity distribution within an object based on the current applied and voltage measured at surface electrodes. Thus, EIT images are sensitive to electrode properties (i.e. contact impedance, electrode area and boundary shape under the electrode). While some of th...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/32/7/S02
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVE:Accurate bladder size estimation is an important clinical parameter that assists physicians, enabling them to provide better treatment for patients who are suffering from urinary incontinence. Electrical impedance tomography (EIT) is a non-invasive medical imaging method that estimates organ boundaries assumi...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/abaa56
更新日期:2020-12-18 00:00:00
abstract::Using a primary coil that induces eddy currents in a volume conductor, and a pair of secondary coils configured to form a differential transformer, it is possible to measure the conductivity of a volume conductor by the magnetic fields of the induced eddy currents. This method is especially favourable for measuring im...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/14/4/007
更新日期:1993-11-01 00:00:00
abstract::This review describes recent developments in microfabricated flow cytometers and related microfluidic devices that can detect, analyze, and sort cells or particles. The high-speed analytical capabilities of flow cytometry depend on the cooperative use of microfluidics, optics and electronics. Along with the improvemen...
journal_title:Physiological measurement
pub_type: 杂志文章,评审
doi:10.1088/0967-3334/26/3/R02
更新日期:2005-06-01 00:00:00
abstract::The purpose of this study was to examine the performance of dual-energy computed tomography (DECT) for the quantification of liver fat content (LFC). We prepared two phantoms: homogenized mixtures of porcine liver and fat and homogeneous mixtures of liver- and fat-equivalent solutions. Tubes containing mixtures with k...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/35/4/597
更新日期:2014-04-01 00:00:00
abstract::The paper describes the development of an electrical impedance tomography (EIT) system for gynecologic research. The GIT (gynecological impedance tomography) system has 48 electrodes and is embedded on a small space (30 mm diameter and 20 mm height) inside of the vaginal probe. The system provides real-time (one shot ...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/33/5/849
更新日期:2012-05-01 00:00:00
abstract:OBJECTIVE:In this study, electroencephalography activity recorded during monotonous driving was investigated to examine the predictive capability of monopolar EEG analysis for fatigue/sleepiness in a cohort of train drivers. APPROACH:Sixty-three train drivers participated in the study, where 32- lead monopolar EEG dat...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/aae42e
更新日期:2018-10-30 00:00:00
abstract:OBJECTIVE:To validate the accuracy of the Oura ring in the quantification of resting heart rate (HR) and heart rate variability (HRV). BACKGROUND:Wearable devices have become comfortable, lightweight, and technologically advanced for assessing health behavior. As an example, the novel Oura ring integrates daily physic...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/ab840a
更新日期:2020-05-07 00:00:00
abstract::Wearables such as accelerometers are emerging as powerful tools for quantifying gait in various environments. Flexibility in wearable location may improve ease of use and data acquisition during instrumented testing. However, change of location may impact algorithm functionality when evaluating associated gait charact...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/37/10/1785
更新日期:2016-10-01 00:00:00
abstract::Obesity is a major health issue in both developed and developing countries. The balance between energy intake and exercise is important, and measurements of both energy intake and energy expenditure are required. Many studies have attempted to monitor energy intake via wearable technology, but no standard methods have...
journal_title:Physiological measurement
pub_type: 杂志文章,评审
doi:10.1088/1361-6579/ab3827
更新日期:2019-09-03 00:00:00
abstract::Electrocardiograms (ECGs) recorded from patients in intensive care were investigated to quantify any relationship between ECG signal quality and false monitoring alarms. False alarms are a considerable problem for nursing and medical staff as they distract from clinical care, and are also a problem for patients as the...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/37/8/1383
更新日期:2016-08-01 00:00:00
abstract::Sleep-wake patterns are often significantly disturbed in critically ill patients. This disturbance is closely linked to secondary brain dysfunctions in these patients. Sedation not only impairs sleep quality in ICU patients but also has detrimental effects on short- and long-term outcome. In other contexts, light ther...
journal_title:Physiological measurement
pub_type: 杂志文章,评审
doi:10.1088/0967-3334/37/9/R73
更新日期:2016-09-01 00:00:00
abstract::Electrical impedance tomography (EIT) image reconstruction is an ill-posed problem requiring maximum measurement precision. Recent EIT systems claim 60 to 80 dB precision. Achieving higher values is hard in practice since measurements must be performed at relatively high frequency, on a living subject, while using com...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/27/5/S05
更新日期:2006-05-01 00:00:00
abstract::Automatic sleep stage classification with cardiorespiratory signals has attracted increasing attention. In contrast to the traditional manual scoring based on polysomnography, these signals can be measured using advanced unobtrusive techniques that are currently available, promising the application for personal and co...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/36/10/2027
更新日期:2015-10-01 00:00:00
abstract::Cardiac output (CO) monitoring is not only essential for critically ill patients in the hospital, but also for patients at home and those undergoing cardiopulmonary exercise testing. However, CO is difficult to monitor during daily activities and exercise. In this paper, we aim at developing a novel CO estimation meth...
journal_title:Physiological measurement
pub_type: 临床试验,杂志文章
doi:10.1088/0967-3334/31/5/008
更新日期:2010-05-01 00:00:00
abstract::The most common method of clinical measurement of arterial blood pressure is by means of the cuff sphygmomanometer. This instrument has provided fundamental quantitative information on arterial pressure in individual subjects and in populations and facilitated estimation of cardiovascular risk related to levels of blo...
journal_title:Physiological measurement
pub_type: 历史文章,杂志文章,评审
doi:10.1088/0967-3334/31/1/R01
更新日期:2010-01-01 00:00:00
abstract::Although people spend a third of their day engaged in sedentary activities, research on heart activity during sitting is almost nonexistent because of the discomfort experienced when electrocardiogram (ECG) measurement electrodes are attached to the body. Accordingly, in this study, a system was developed to monitor h...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/36/3/N61
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVE:The creation of artificial gravity on board a space station is one of the promising methods for preventing health problems during space missions; a short-radius centrifuge (SRC) is the model of such a method on Earth. Our goal was to evaluate the sensitivity of bioimpedance polysegmental measurements for moni...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/ab840b
更新日期:2020-05-07 00:00:00
abstract::Skinfold anthropometry is a widely practiced technique often with little appreciation of its limitations. The large residual error appearing in any regressions of body density versus sums of skinfolds is primarily due to biological causes, in particular the non-constancy of the ratio of subcutaneous to total body fat....
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/19/3/008
更新日期:1998-08-01 00:00:00
abstract::Spirometry is the gold standard to determine the presence of airflow obstruction, but it requires volitional participation and needs qualified supervision. The forced oscillation technique (FOT) measures respiratory input impedance (Zrs) during spontaneous breathing and it could be useful for unsupervised monitoring o...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/31/4/N01
更新日期:2010-04-01 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
abstract:OBJECTIVE:Atrial fibrillation (AF) causes marked risk for patients, while silent fibrillation may remain unnoticed if not suspected and screened. Development of comfortable yet accurate beat-to-beat heart rate (HR) monitoring with good AF detection sensitivity would facilitate screening and improve treatment. The purpo...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/aac9a9
更新日期:2018-06-27 00:00:00
abstract::Myoelectrical pattern classification is a crucial part in multi-functional prosthesis control. This paper investigates a discriminant Fourier-derived cepstrum (DFC) and feature-level post-processing (FLPP) to discriminate hand and wrist motions using the surface electromyographic signal. The Fourier-derived cepstrum t...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/30/12/008
更新日期:2009-12-01 00:00:00
abstract:OBJECTIVE:Electrical impedance tomography (EIT) is a functional imaging technique in which cross-sectional images of structures are reconstructed based on boundary trans-impedance measurements. Continuous functional thorax monitoring using EIT has been extensively researched. Increasing the number of electrodes, number...
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