scholarly journals Self-Powered Piezoelectric-Biosensing Textiles for the Physiological Monitoring and Time-Motion Analysis of Individual Sports

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3310 ◽  
Author(s):  
Yupeng Mao ◽  
Mailun Shen ◽  
Bing Liu ◽  
Lili Xing ◽  
Song Chen ◽  
...  
Keyword(s):  
Motion Analysis ◽  
Physiological State ◽  
Enzymatic Reaction ◽  
Lactate Concentration ◽  
Physiological Monitoring ◽  
Material System ◽  
Analysis Process ◽  
Time Motion ◽  
Self Powered ◽  
Individual Sports

Self-powered piezoelectric-biosensing textiles for the physiological monitoring and time-motion analysis of individual sports have been developed. The material system is composed of tetrapod-shaped ZnO nanowires on common textiles. The mechanism is based on the coupling of enzymatic reaction (LOx and lactate) and piezoelectric effect. After conformably attaching the device to the athlete, the device can monitor in real-time the moving speed, frequency, joint angle, and sweat lactate concentration of the athlete. The whole monitoring/analysis process is battery-free. The motor skills and physiological state of two athletes are investigated using the textiles, and different lactate threshold times and maximum lactate release capacities have been obtained. This technique can help them develop distinct training programs. This research is a new direction for the scientific monitoring of kinematics and may also stimulate the development of self-powered wearable sports-related systems.

scholarly journals Wearable Battery-Free Perspiration Analyzing Sites Based on Sweat Flowing on ZnO Nanoarrays

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Wanglinhan Zhang ◽  
Hongye Guan ◽  
Tianyan Zhong ◽  
Tianming Zhao ◽  
Lili Xing ◽  
...  
Keyword(s):  
Enzymatic Reaction ◽  
Lactate Concentration ◽  
Electrical Signal ◽  
Physiological Status ◽  
Zno Nanowire ◽  
Lactate Oxidase ◽  
Capillary Action ◽  
Wireless Transmitter ◽  
Flow Channels ◽  
Self Powered

AbstractWe fabricated wearable perspiration analyzing sites for actively monitoring physiological status during exercises without any batteries or other power supply. The device mainly consists of ZnO nanowire (NW) arrays and flexible polydimethylsiloxane substrate. Sweat on the skin can flow into the flow channels of the device through capillary action and flow along the channels to ZnO NWs. The sweat flowing on the NWs (with lactate oxidase modification) can output a DC electrical signal, and the outputting voltage is dependent on the lactate concentration in the sweat as the biosensing signal. ZnO NWs generate electric double layer (EDL) in sweat, which causes a potential difference between the upper and lower ends (hydrovoltaic effect). The product of the enzymatic reaction can adjust the EDL and influence the output. This device can be integrated with wireless transmitter and may have potential application in constructing sports big data. This work promotes the development of next generation of biosensors and expands the scope of self-powered physiological monitoring system.

Self-Powered Wearable Sweat-Lactate Analyzer for Scheduling Training of Boat Race

2020 ◽  
Vol 15 (2) ◽  
pp. 212-218 ◽  
Author(s):  
Yupeng Mao ◽  
Ning Ba ◽  
Xinchao Gao ◽  
Ziqi Wang ◽  
Mailun Shen ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Piezoelectric Effect ◽  
Physiological State ◽  
Enzymatic Reaction ◽  
Driving Frequency ◽  
Lactate Oxidase ◽  
Training Plan ◽  
Self Powered ◽  
The Relationship ◽  
Sweat Lactate

Self-powered wearable sweat-lactate analyzer has been developed for training analysis of rowing. Tetrapodshaped ZnO nanowires are attached onto ordinary textiles to form a device. Based on the coupling of enzymatic reaction (lactate oxidase and lactic acid) and piezoelectric effect, the device can be attached to the tester to monitor the driving frequency, rowing distance and sweat lactic acid concentration of the tester in real-time. The relationship between the rowing frequency and physiological state is obtained by monitoring the rowing process of the tester, which is helpful to formulate a training plan belonging to the rowing tester. This study provides a new direction for the scientific monitoring of kinematics and accelerates the development of wearable sports equipment.

scholarly journals Self-Powered Flexible Sour Sensor for Detecting Ascorbic Acid Concentration Based on Triboelectrification/Enzymatic-Reaction Coupling Effect

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 373
Author(s):  
Tianming Zhao ◽  
Qi Wang ◽  
An Du
Keyword(s):  
Ascorbic Acid ◽  
Acid Concentration ◽  
Flexible Electronics ◽  
Coupling Effect ◽  
Enzymatic Reaction ◽  
Wire Mesh ◽  
Material System ◽  
Ascorbic Acid Concentration ◽  
Self Powered ◽  
Reaction Coupling

Artificial sensory substitution systems can mimic human sensory organs through replacing the sensing process of a defective sensory receptor and transmitting the sensing signal into the nervous system. Here, we report a self-powered flexible gustation sour sensor for detecting ascorbic acid concentration. The material system comprises of Na2C2O4-Ppy with AAO modification, PDMS and Cu wire mesh. The working mechanism is contributed to the triboelectrification/enzymatic-reaction coupling effect, and the device can collect weak energy from body movements and directly output triboelectric current without any external power-units. The triboelectric output is affected by AA concentration, and the response is up to 34.82% against 15.625 mM/L of AA solution. Furthermore, a practical application in detecting ascorbic acid concentration of different drinks has been demonstrated. This work can encourage the development of wearable flexible electronics and this self-powered sour sensor has the potential that can be acted as a kind of gustatory receptors to build electronic tongues.

Time motion analysis of nursing work in ICU, telemetry and medical-surgical units

2017 ◽  
Vol 25 (8) ◽  
pp. 640-646 ◽  
Author(s):  
Elizabeth Schenk ◽  
Ruth Schleyer ◽  
Cami R. Jones ◽  
Sarah Fincham ◽  
Kenn B. Daratha ◽  
...  
Keyword(s):  
Motion Analysis ◽  
Time Motion ◽  
Surgical Units

Peroperative time-motion analysis of diagnostic laparoscopy with laparoscopic ultrasonography

1999 ◽  
Vol 86 (7) ◽  
pp. 951-955 ◽  
Author(s):  
K. T. den Boer ◽  
L. T. de Wit ◽  
J. Dankelman ◽  
D. J. Gouma
Keyword(s):  
Motion Analysis ◽  
Diagnostic Laparoscopy ◽  
Laparoscopic Ultrasonography ◽  
Time Motion

Time motion analysis of 2001 and 2002 super 12 rugby

2005 ◽  
Vol 23 (5) ◽  
pp. 523-530 ◽  
Author(s):  
Grant Duthie ◽  
David Pyne ◽  
Sue Hooper
Keyword(s):  
Motion Analysis ◽  
Time Motion

Position-Dependent Cardiovascular Response and Time-Motion Analysis During Training Drills and Friendly Matches in Elite Male Basketball Players

2016 ◽  
Vol 30 (1) ◽  
pp. 60-70 ◽  
Author(s):  
Lorena Torres-Ronda ◽  
Angel Ric ◽  
Ivan Llabres-Torres ◽  
Bernat de las Heras ◽  
Xavi Schelling i del Alcazar
Keyword(s):  
Motion Analysis ◽  
Cardiovascular Response ◽  
Basketball Players ◽  
Time Motion

scholarly journals A time-motion analysis of Paralympic football for athletes with cerebral palsy

2016 ◽  
Vol 11 (4) ◽  
pp. 552-558 ◽  
Author(s):  
Craig Boyd ◽  
Chris Barnes ◽  
Simon J Eaves ◽  
Christopher I Morse ◽  
Neil Roach ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Motion Analysis ◽  
Time Motion
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