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https://www.readbyqxmd.com/read/28073339/dermal-safety-assessment-of-arm-hammer-laundry-products-formulated-for-sensitive-skin
#1
Douglas M Frederick, Linda Vorwerk, Archana Gupta, Annahita Ghassemi
CONTEXT: The prevalence of sensitive skin among the general population in industrialized countries is reported to be over 50%. Sensitive skin subjects often report significant reactions to contact with cosmetics, soaps and other consumer products. OBJECTIVE: This paper describes the overall skin compatibility and mildness program for a newly developed, lightly fragranced, colorant free laundry product (i.e. Arm & Hammer™ Sensitive Skin plus Skin-Friendly Fresh Scent), specially formulated for individuals with sensitive skin...
January 11, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28055986/robust-heart-rate-estimation-using-wrist-type-photoplethysmographic-signals-during-physical-exercise-an-approach-based-on-adaptive-filtering
#2
Sibylle Fallet, Jean-Marc Vesin
Photoplethysmographic (PPG) signals are easily corrupted by motion artifacts when the subjects perform physical exercise. This paper introduces a two-step processing scheme to estimate heart rate (HR) from wrist-type PPG signals strongly corrupted by motion artifacts. Adaptive noise cancellation, using normalized least-mean-square algorithm, is first performed to attenuate motion artifacts and reconstruct multiple PPG waveforms from different combinations of corrupted PPG waveforms and accelerometer data. An adaptive band-pass filter is then used to track the common instantaneous frequency component (i...
January 5, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28004392/a-critical-period-of-corticomuscular-and-emg-emg-coherence-detection-in-9-25-week-old-healthy-infants
#3
Anina Ritterband-Rosenbaum, Anna Herskind, Xi Li, Maria Willerslev-Olsen, Mikkel Damgaard Olsen, Simon Francis Farmer, Jens Bo Nielsen
The early postnatal development of functional corticospinal connections in human infants is not fully clarified. We used EEG and EMG to investigate the development of corticomuscular and intramuscular coherence as indicators of functional corticospinal connectivity in healthy infants aged 1-66 weeks. EEG was recorded over leg and hand area of motor cortex. EMG recordings were made from right ankle dorsiflexor and right wrist extensor muscles. Quantification of the amount of corticomuscular coherence in the 20-40 Hz frequency band showed a significantly larger coherence for infants aged 9-25 weeks compared to younger and older infants...
December 22, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27999537/nonlinear-coupling-between-cortical-oscillations-and-muscle-activity-during-isotonic-wrist-flexion
#4
Yuan Yang, Teodoro Solis-Escalante, Mark van de Ruit, Frans C T van der Helm, Alfred C Schouten
Coupling between cortical oscillations and muscle activity facilitates neuronal communication during motor control. The linear part of this coupling, known as corticomuscular coherence, has received substantial attention, even though neuronal communication underlying motor control has been demonstrated to be highly nonlinear. A full assessment of corticomuscular coupling, including the nonlinear part, is essential to understand the neuronal communication within the sensorimotor system. In this study, we applied the recently developed n:m coherence method to assess nonlinear corticomuscular coupling during isotonic wrist flexion...
2016: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/27965146/movement-related-beta-oscillations-show-high-intra-individual-reliability
#5
Svenja Espenhahn, Archy O de Berker, Bernadette C M van Wijk, Holly E Rossiter, Nick S Ward
Oscillatory activity in the beta frequency range (15-30Hz) recorded from human sensorimotor cortex is of increasing interest as a putative biomarker of motor system function and dysfunction. Despite its increasing use in basic and clinical research, surprisingly little is known about the test-retest reliability of spectral power and peak frequency measures of beta oscillatory signals from sensorimotor cortex. Establishing that these beta measures are stable over time in healthy populations is a necessary precursor to their use in the clinic...
December 10, 2016: NeuroImage
https://www.readbyqxmd.com/read/27934197/multifunctional-wearable-device-based-on-flexible-and-conductive-carbon-sponge-polydimethylsiloxane-composite
#6
Yuan-Qing Li, Wei-Bin Zhu, Xiao-Guang Yu, Pei Huang, Shao-Yun Fu, Ning Hu, Kin Liao
Wearable devices that can be used to monitor personal health, track human motions, and provide thermotherapy, etc., are highly desired in personalized healthcare. In this work, a multifunctional wearable "wrist band" which works as both heater for thermotherapy and sensor for personal health and motion monitoring is fabricated from a flexible and conductive carbon sponge/polydimethylsiloxane (CS/PDMS) composite. The key functional material of the wrist band, namely, the conductive CS, is synthesized from waste paper by a freeze-drying and high-temperature pyrolysis process...
December 7, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27916338/efficacy-of-a-forearm-band-in-addition-to-exercises-compared-with-exercises-alone-for-lateral-epicondylitis-a-multicenter-randomized-controlled-trial
#7
Takanobu Nishizuka, Katsuyuki Iwatsuki, Shigeru Kurimoto, Michiro Yamamoto, Hitoshi Hirata
BACKGROUND: A forearm band is frequently used for lateral epicondylitis worldwide. However, evidence regarding its efficacy has been insufficient. The objective of this prospective, randomized, controlled trial was to analyze the effects of a forearm band for treatment of lateral epicondylitis at 1, 3, 6, and 12 months. METHODS: Patients with lateral epicondylitis were randomly allocated into a band (n = 55) or non-band (n = 55) group. Patients in the band group were instructed to wear a forearm band for more than 6 h daily for at least 6 months...
December 1, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27900173/how-accurate-are-the-wrist-based-heart-rate-monitors-during-walking-and-running-activities-are-they-accurate-enough
#8
Sarah E Stahl, Hyun-Sung An, Danae M Dinkel, John M Noble, Jung-Min Lee
BACKGROUND: Heart rate (HR) monitors are valuable devices for fitness-orientated individuals. There has been a vast influx of optical sensing blood flow monitors claiming to provide accurate HR during physical activities. These monitors are worn on the arm and wrist to detect HR with photoplethysmography (PPG) techniques. Little is known about the validity of these wearable activity trackers. AIM: Validate the Scosche Rhythm (SR), Mio Alpha (MA), Fitbit Charge HR (FH), Basis Peak (BP), Microsoft Band (MB), and TomTom Runner Cardio (TT) wireless HR monitors...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27890491/neural-pattern-similarity-between-contra-and-ipsilateral-movements-in-high-frequency-band-of-human-electrocorticograms
#9
Yusuke Fujiwara, Riki Matsumoto, Takuro Nakae, Kiyohide Usami, Masao Matsuhashi, Takayuki Kikuchi, Kazumichi Yoshida, Takeharu Kunieda, Susumu Miyamoto, Tatsuya Mima, Akio Ikeda, Rieko Osu
The cortical motor areas are activated not only during contralateral limb movements but also during ipsilateral limb movements. Although these ipsilateral activities have been observed in several brain imaging studies, their functional role is poorly understood. Due to its high temporal resolution and low susceptibility to artifacts from body movements, the electrocorticogram (ECoG) is an advantageous measurement method for assessing the human brain function of motor behaviors. Here, we demonstrate that contra- and ipsilateral movements share a similarity in the high-frequency band of human ECoG signals...
November 24, 2016: NeuroImage
https://www.readbyqxmd.com/read/27859579/sixty-hertz-stimulation-improves-bradykinesia-and-amplifies-subthalamic-low-frequency-oscillations
#10
REVIEW
Zack Blumenfeld, Mandy Miller Koop, Thomas E Prieto, Lauren A Shreve, Anca Velisar, Emma J Quinn, Megan H Trager, Helen Brontë-Stewart
BACKGROUND: The objective of this study was to investigate the hypothesis that attenuation of subthalamic nucleus (STN) alpha-/beta-band oscillations is causal to improvement in bradykinesia. METHODS: STN local field potentials from a sensing neurostimulator (Activa(®) PC+S; Medtronic, Inc.) and kinematics from wearable sensors were recorded simultaneously during 60- and 140-Hz deep brain stimulation (DBS) in 9 freely moving PD subjects (15 STNs) performing repetitive wrist flexion-extension...
November 8, 2016: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/27795550/circadian-timing-and-alignment-in-healthy-adults-associations-with-bmi-body-fat-caloric-intake-and-physical-activity
#11
K G Baron, K J Reid, T Kim, L Van Horn, H Attarian, L Wolfe, J Siddique, G Santostasi, P C Zee
INTRODUCTION: Disruption of circadian rhythms is one of the proposed mechanisms linking late sleep timing to obesity risk but few studies have evaluated biological markers outside of the laboratory. The goal of this study was to determine the relationship between the timing and alignment of melatonin and sleep onset (phase angle) with body mass index (BMI), body fat and obesity-related behaviors. We hypothesized that circadian alignment (relationship of melatonin to sleep timing) rather than circadian (melatonin) timing would be associated with higher BMI, body fat, dietary intake and lower physical activity...
December 6, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27792176/wrist-pulse-rate-monitor-using-self-injection-locked-radar-technology
#12
Fu-Kang Wang, Mu-Cyun Tang, Sheng-Chao Su, Tzyy-Sheng Horng
To achieve sensitivity, comfort, and durability in vital sign monitoring, this study explores the use of radar technologies in wearable devices. The study first detected the respiratory rates and heart rates of a subject at a one-meter distance using a self-injection-locked (SIL) radar and a conventional continuous-wave (CW) radar to compare the sensitivity versus power consumption between the two radars. Then, a pulse rate monitor was constructed based on a bistatic SIL radar architecture. This monitor uses an active antenna that is composed of a SIL oscillator (SILO) and a patch antenna...
October 26, 2016: Biosensors
https://www.readbyqxmd.com/read/27764231/regression-model-based-walking-speed-estimation-using-wrist-worn-inertial-sensor
#13
Shaghayegh Zihajehzadeh, Edward J Park
Walking speed is widely used to study human health status. Wearable inertial measurement units (IMU) are promising tools for the ambulatory measurement of walking speed. Among wearable inertial sensors, the ones worn on the wrist, such as a watch or band, have relatively higher potential to be easily incorporated into daily lifestyle. Using the arm swing motion in walking, this paper proposes a regression model-based method for longitudinal walking speed estimation using a wrist-worn IMU. A novel kinematic variable is proposed, which finds the wrist acceleration in the principal axis (i...
2016: PloS One
https://www.readbyqxmd.com/read/27725721/time-course-of-coherence-in-the-human-basal-ganglia-during-voluntary-movements
#14
Omid Talakoub, Bogdan Neagu, Kaviraja Udupa, Eric Tsang, Robert Chen, Milos R Popovic, Willy Wong
We are interested in characterizing how brain networks interact and communicate with each other during voluntary movements. We recorded electrical activities from the globus pallidus pars interna (GPi), subthalamic nucleus (STN) and the motor cortex during voluntary wrist movements. Seven patients with dystonia and six patients with Parkinson's disease underwent bilateral deep brain stimulation (DBS) electrode placement. Local field potentials from the DBS electrodes and scalp EEG from the electrodes placed over the motor cortices were recorded while the patients performed externally triggered and self-initiated movements...
October 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27699128/unconstrained-pulse-pressure-monitoring-for-health-management-using-hetero-core-fiber-optic-sensor
#15
Michiko Nishiyama, Masako Sonobe, Kazuhiro Watanabe
In this paper, we present a pulse pressure waveform sensor that does not constrain a wearer's daily activity; the sensor uses hetero-core fiber optics. Hetero-core fiber sensors have been found to be sensitive to moderate bending. To detect minute pulse pressure changes from the radial artery at the wrist, we devised a fiber sensor arrangement using three-point bending supports. We analyzed and evaluated the measurement validity using wavelet transformation, which is well-suited for biological signal processing...
September 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27677025/a-closed-loop-bci-system-for-rehabilitation-of-the-hemiplegic-upper-limb-a-performance-study-of-the-systems-ability-to-detect-intention-of-movement
#16
Juliette Hurtier, Leh Van Dokkum, Sami Dalhoumi, Aodhan Coffey, Stéphane Perrey, Claire Jourdan, Gérard Dray, Tomas Ward, Jerôme Froger, Isabelle Laffont
OBJECTIVE: Rehabilitation of the upper-limb by means of a brain computer interface (BCI) is based on detecting an "intention to act" in the brain and transforming this intention into actual movement by using a motorized orthesis. The visual and proprioceptive feedback that results from the systems' generated movement following the subjects' captured intention, is thought to close the sensori-motor loop. Closing the loop is a key feature of BCI-systems that is thought to induce cerebral plasticity and thereby facilitating rehabilitation...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27501207/effect-of-acupressure-on-nausea-vomiting-in-patients-with-acute-myeloblastic-leukemia
#17
Hatice Sevil Avc, Nimet Ovayolu, Özlem Ovayolu
The aim of this study was to assess the effect of acupressure, applied at P6 (Neiguan) acupuncture point, on chemotherapy-induced nausea and vomiting in patients with acute myeloblastic leukemia. This was a randomized controlled trial conducted on patients with myeloblastic leukemia. A total of 90 patients, who received the same chemotherapy regimen and antiemetic therapy, were included in the study as 30 patients in the control group, 30 patients in the band group, and 30 patients in the pressure group. Although acupressure was applied by placing wristbands at P6 acupuncture point of both wrists in patients of the band group for totally 4 days, acupressure was applied with the use of finger pressure in patients of the pressure group for totally 4 days...
September 2016: Holistic Nursing Practice
https://www.readbyqxmd.com/read/27468369/interosseous-membrane-of-the-forearm
#18
Robert Matthias, Thomas W Wright
BACKGROUND: Injuries of the interosseous membrane (IOM) of the forearm are frequently unrecognized, difficult to treat, and can result in a devastating sequelae for the wrist and elbow. PURPOSE: The purpose of this review article is to evaluate the dignosis, biomechanics, clinical results, and propose a treatment approach to this rare complex entity. METHODS: The biomechanical and clinical literature is reviewed. A treatment approach is described based on the known biomechanics and clinical experience of the senior author (T...
August 2016: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/27455381/effects-of-muscle-fatigue-on-the-usability-of-a-myoelectric-human-computer-interface
#19
Alexander G Barszap, Ida-Maria Skavhaug, Sanjay S Joshi
Electromyography-based human-computer interface development is an active field of research. However, knowledge on the effects of muscle fatigue for specific devices is limited. We have developed a novel myoelectric human-computer interface in which subjects continuously navigate a cursor to targets by manipulating a single surface electromyography (sEMG) signal. Two-dimensional control is achieved through simultaneous adjustments of power in two frequency bands through a series of dynamic low-level muscle contractions...
October 2016: Human Movement Science
https://www.readbyqxmd.com/read/27250460/pulse-wave-detection-method-based-on-the-bio-impedance-of-the-wrist
#20
Jianman He, Mengjun Wang, Xiaoxia Li, Gang Li, Ling Lin
The real-time monitoring of pulse rate can evaluate the heart health to some extent, and the measurement of bio-impedance has the potential in wearable health monitoring system. In this paper, an effective method, which contains self-balancing bridge, flexible electrode, and high-speed digital lock-in algorithm (DLIA) with over-sampling, was designed to detect the impedance pulse wave at the wrist. By applying the self-balancing bridge, the basic impedance can be compensated as much as possible, and the low amplitude of impedance variation related to heart pulse can be obtained more easily...
May 2016: Review of Scientific Instruments
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