Correction Braz J Med Biol Res 2007; 40(1): 135-143 Effect of age and gender on sweat lactate and ammonia concentrations during exercise in the heat

Meyer, Flavia; Laitano, Orlando; Bar-Or, Oded; McDougall, D.; Heigenhauser, George J. F.

doi:10.1590/s0100-879x2007000600019

Cited by 7 publications

References 0 publications

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“…In contrast to what is expected in theory [18,19] and already published [20,21,27,28], the ammonium concentration decreased for further load of intensity. However, an increasing heart rate and MET value indicate a physical overstrain of the test subject.…”

Section: Comparison Of On-site Measurements Using the Electrolyte Sencontrasting

confidence: 91%

“…factors the sweat rate into the calculation of ammonium concentration in sweat and showed an increased concentration of ammonium during exercise consistent to theory . However, closer examination of the details of the published sports‐related application tests reveals that most measurements were only done before exercise and of the accumulated sweat after the exercise was completed . Only Ament, et al.…”

Section: Resultsmentioning

confidence: 99%

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Human Sweat Analysis Using a Portable Device Based on a Screen-printed Electrolyte Sensor

et al. 2017

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Analysis of ammonium in human sweat during physical strain using a portable sensor device and enzymatic measurements are compared. The portable device is based on a screen‐printed electrolyte sensor connected with an evaluation board for data acquisition and transfer. During performance tests with artificial sweat, the sensor shows a low detection limit of 0.3 mM. Thus, the typical concentration range of ammonium in sweat lies within the working range of the sensor. We also demonstrate the necessity of the comparison measurement for verification of the correct performance of screen‐printed sensors and show how other components of human sweat influence the measured potential. Regarding the change in ammonium concentration during different levels of work out intensity, we point out a different behavior of what is expected physiologically. With this the importance of consideration of several parameters during sweating, like the sweat rate and other ingredients in human sweat, was demonstrated for correct determination of the ammonium concentration.

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Section: Comparison Of On-site Measurements Using the Electrolyte Sencontrasting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Human Sweat Analysis Using a Portable Device Based on a Screen-printed Electrolyte Sensor

et al. 2017

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“…There are many known factors that cause inter-and intrasubject variation in sweat production. Main intersubject variability determinants are: physical maturation, 33,127 hydration, 15 diet, 128 and acclimatization. 40,129,130 Main factors for intersubject variability are: the time of day, 131 region of the body being sampled, 11,97,128 and the method of sweat induction.…”

Section: Challenges and Perspectives In Sweat Sensingmentioning

confidence: 99%

Wearable sweat sensing for prolonged, semicontinuous, and nonobtrusive health monitoring

Moonen

Haakma

Peri

et al. 2020

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Together with the upcoming market for wearable consumer technologies, noninvasive and continuous health monitoring has become a new trend in the healthcare landscape. In recent years, significant research has been targeted toward the development of wearable sensing devices for monitoring biomarker levels in nonobtrusively accessible biofluids such as tears, urine, saliva, and sweat. Sweat could be an ideal candidate for prolonged, semicontinuous, and nonobtrusive health monitoring because sweat is a continuously accessible biofluid containing physiologically and metabolically rich information. However, challenges still remain toward commercialized wearable sweat-sensing devices, and the correlation between biomarker concentrations in sweat with health conditions still seems to be not fully understood. This review article aims to display the full scope of sweat sensing for health monitoring, starting from the fundamentals of human sweat, via modeling of the sweat gland physiology toward wearable sweat-sensing devices in research and commercialization efforts. Finally, the challenges of sweat sensing that still have to be overcome toward the utilization of sweat sensing in the conventional healthcare settings are discussed.

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“…Throughout this process, the rate of lactate production far exceeds the rate of consumption and thus there is a buildup of lactate concentration that is proportional to the extent of physical exertion. Lactate is subsequently circulated throughout the body via the monocarboxylate transporter and can be detected in sweat, tears, urine, saliva, and serum (at typical concentrations of 20 mM , 3 mM , 0.1 mM , 0.5 mM and 1 mM , respectively).…”

Section: Substrate Effectmentioning

confidence: 99%

Recent Advances in the Construction of Biofuel Cells Based Self-powered Electrochemical Biosensors: A Review

Liu

Zhou

2018

Electroanalysis

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The application of biofuel cells (BFCs) for the construction of self‐powered electrochemical biosensors has recently received enormous attention with exciting advancements. The principle of BFCs for electrochemical biosensing is that the BFCs’ power output which is directly extracted by the biological reactions with the help of biocatalysts is closely related to the analyte's concentration. Such unique feature makes BFCs based electrochemical biosensors with two‐electrode system to be operated without the need of any external power source, which provides a more effective way for the miniaturization and convenient construction of electrochemical biosensors than the traditional electrochemical biosensors with three‐electrode system. Following our previous reviews (Electroanalysis 2012, 24, 197–209; Electroanalysis 2015, 27, 1786–1801), the current review is focused on the recent development and advances in the construction of BFCs based self‐powered electrochemical biosensors which are reported in the years between 2015 and 2018, with a particular emphasis on their possible practical applications in the fields of medical diagnosis, environmental monitoring, food analysis and wearable devices. For these reported BFCs‐based self‐powered electrochemical biosensors, the design approaches are still within the scope of effects (i.e., substrate, inhibition, blocking, gene regulation, enzyme, co‐stabilization, competition, and hybrid effects) summarized by our previous reviews. The outlook, challenges and developing tendency of the future research for the construction of BFCs based self‐powered electrochemical biosensor are discussed in the end. We expect that the advanced electrochemical biosensors based on BFCs with the unique self‐powered capability will continue attracting increasing research interest and lead to new opportunities in various attractive applications related to analytical chemistry.

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Correction Braz J Med Biol Res 2007; 40(1): 135-143 Effect of age and gender on sweat lactate and ammonia concentrations during exercise in the heat

Abstract: We suggest that subscribers photocopy this correction and insert the photocopy at the appropriate place where the article originally appeared. Secondary information services are urged to carry notice of this correction as prominently as they carried the original abstract.

Cited by 7 publications

References 0 publications

Human Sweat Analysis Using a Portable Device Based on a Screen-printed Electrolyte Sensor

Human Sweat Analysis Using a Portable Device Based on a Screen-printed Electrolyte Sensor

Wearable sweat sensing for prolonged, semicontinuous, and nonobtrusive health monitoring

Recent Advances in the Construction of Biofuel Cells Based Self-powered Electrochemical Biosensors: A Review

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