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https://www.readbyqxmd.com/read/28738671/inertial-flywheel-resistance-training-and-muscle-oxygen-saturation
#1
Rafael Timón, Jesús G Ponce-González, José L González-Montesinos, Guillermo Olcina, Alejandro Pérez-Pérez, José Castro-Piñero
BACKGROUND: The inertial flywheel device causes an increase in eccentric overload during training. The aim was to study muscle oxygen saturation produced during an inertial flywheel squat training, comparing it with a barbell squat training. METHODS: Twelve male adults performed a barbell squat training (3 x 8 reps, 75-80% 1RM) and a flywheel squat training (3 x 8 reps, all-out). Muscle oxygen saturation (%SmO2), total hemoglobin (tHb), reoxygenation, heart rate (HR), lactate, vertical jumps, maximal voluntary isometric contraction and rated perceived exertion (RPE) were studied...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28600261/haptic-orientation-guidance-using-two-parallel-double-gimbal-control-moment-gyroscopes
#2
Julie Walker, Heather Culbertson, Michael Raitor, Allison Okamura
This paper presents a system of two double-gimbal control moment gyroscopes (CMGs) for providing ungrounded kinesthetic haptic feedback. By spinning a second flywheel opposite the first, and rotating them through opposite trajectories, undesired gyroscopic effects can be eliminated, isolating a single torque axis. This produces a moment pulse proportional to the flywheel spin speed and rotation speed. Rotating the CMG gimbals quickly in one direction, then resetting them more slowly generates repeated torque pulses indicating a clear direction cue...
June 7, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28538317/effects-of-inertial-setting-on-power-force-work-and-eccentric-overload-during-flywheel-resistance-exercise-in-women-and-men
#3
Luis M Martinez-Aranda, Rodrigo Fernandez-Gonzalo
Exercise load is a key component in determining end-point adaptations to resistance exercise. Yet, there is no information regarding the use of different inertia (i.e., loads) during isoinertial flywheel resistance exercise, a very popular high-intensity training model. Thus, this study examined power, work, force, and eccentric overload produced during flywheel resistance exercise with different inertial settings in men and women. Twenty-two women (n = 11) and men (n = 11) performed unilateral (in both legs) isolated concentric (CON) and coupled CON and eccentric (ECC) exercise in a flywheel knee extension device employing 6 inertias (0...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28496410/clinical-applications-of-iso-inertial-eccentric-overload-yoyo%C3%A2-resistance-exercise
#4
REVIEW
Per A Tesch, Rodrigo Fernandez-Gonzalo, Tommy R Lundberg
In the quest for a viable non-gravity dependent method to "lift weights" in space, our laboratory introduced iso-inertial resistance (YoYo™) exercise using spinning flywheel(s), more than 25 years ago. After being thoroughly tested in individuals subjected to various established spaceflight analogs, a multi-mode YoYo™ exercise apparatus was eventually installed on the International Space Station in 2009. The method, applicable to any muscle group, provides accommodated resistance and optimal muscle loading through the full range of motion of concentric actions, and brief episodes of eccentric overload...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28469750/the-effect-of-previous-wingate-performance-using-one-body-region-on-subsequent-wingate-performance-using-a-different-body-region
#5
Leonie Harvey, Matthew Bousson, Chris McLellan, Dale Lovell
The 30 second Wingate Anaerobic Test (WAnT) is the gold standard measure of anaerobic performance. The present investigation aimed to determine if a previous WAnT using one body region significantly affected a subsequent WAnT using a different body region. Twelve male university students (n = 12, 23 ± 2 years, 84 ± 16.1 kg, 178.5 ± 7.4 cm) volunteered to complete two repeated WAnT protocols (either lower body WAnT followed by an upper body WAnT or vice versa) on two separate testing occasions. The upper body WAnT was conducted on a modified electromagnetically braked cycle ergometer using a flywheel braking force corresponding to 5% bodyweight...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28437930/si-traceable-measurement-of-an-optical-frequency-at-the-low-10-sup-16-sup-level-without-a-local-primary-standard
#6
Hidekazu Hachisu, Gérard Petit, Fumimaru Nakagawa, Yuko Hanado, Tetsuya Ido
SI-traceable measurements of optical frequencies using International Atomic Time (TAI) do not require a local primary frequency reference, but suffer from an uncertainty in tracing to the SI second. For the measurement of the <sup>87</sup>Sr lattice clock transition, we have reduced this uncertainty to the low 10<sup>-16</sup> level by averaging three sets of ten-day intermittent measurements, in which we operated the lattice clock for 10<sup>4</sup> s on each day. Moreover, a combined oscillator of two hydrogen masers was employed as a local flywheel oscillator (LFO) in order to mitigate the impact of sporadic excursion of LFO frequency...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28385560/skeletal-muscle-functional-and-structural-adaptations-after-eccentric-overload-flywheel-resistance-training-a-systematic-review-and-meta-analysis
#7
REVIEW
Sergio Maroto-Izquierdo, David García-López, Rodrigo Fernandez-Gonzalo, Osvaldo C Moreira, Javier González-Gallego, José A de Paz
OBJECTIVES: The purpose of this meta-analysis was to examine the effect of flywheel (FW) resistance training with Eccentric Overload (FW-EOT) on muscle size and functional capacities (i.e. strength and power) in athletes and healthy subjects, and to compare FW-induced adaptations with those triggered by traditional resistance exercise interventions. DESIGN: A systematic review and meta-analysis of randomised controlled trials. METHODS: A search of electronic databases [PubMed, MEDLINE (SportDiscus), Web of Science, Scopus and PEDro] was conducted to identify all publications employing FW-EOT up to April 30, 2016...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28279429/stabilization-and-synchronization-for-a-mechanical-system-via-adaptive-sliding-mode-control
#8
Zhankui Song, Kaibiao Sun, Shuai Ling
In this paper, we investigate the synchronization problem of chaotic centrifugal flywheel governor with parameters uncertainty and lumped disturbances. A slave centrifugal flywheel governor system is considered as an underactuated following-system which a control input is designed to follow a master centrifugal flywheel governor system. To tackle lumped disturbances and uncertainty parameters, a novel synchronization control law is developed by employing sliding mode control strategy and Nussbaum gain technique...
March 6, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28230649/-stamp-perforation-technique-for-correction-of-prominent-mandibular-angle-10-years-of-experience-in-mandibular-reshaping-in-asians
#9
Bowen Gao, Jizhou He, Feng Xie, Hainan Zhu, Liang-Gang Yu, Qingfeng Li
Resection of a prominent mandibular angle is commonly used in Eastern society to improve the lower one third facial proportion. Historically, this procedure had a high complication rate, such as severe bleeding, asymmetry of the angle reduction, and "second mandibular angle." A safer and more effective way of performing such procedures is needed. The aim of this study is to introduce 3 instruments, a tunable guide handpiece, milling cutter, and flywheel, which were invented by the author, as well as a related ostectomy technique for correcting prominent mandibular angles using a modified full-thickness marginal ostectomy of the mandibular corpus angle, named the "stamp perforation" technique...
June 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28113499/frequency-measurement-system-of-optical-clocks-without-a-flywheel-oscillator
#10
Miho Fujieda, Tetsuya Ido, Hidekazu Hachisu, Tadahiro Gotoh, Hiroshi Takiguchi, Kazuhiro Hayasaka, Kenji Toyoda, Kenji Yonegaki, Utako Tanaka, Shinji Urabe
No abstract text is available yet for this article.
October 4, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27932674/metabolic-adaptations-in-skeletal-muscle-after-84-days-of-bed-rest-with-and-without-concurrent-flywheel-resistance-exercise
#11
José M Irimia, Mario Guerrero, Paula Rodriguez-Miguelez, Joan A Cadefau, Per A Tesch, Roser Cussó, Rodrigo Fernandez-Gonzalo
As metabolic changes in human skeletal muscle after long-term (simulated) spaceflight are not well understood, this study examined the effects of long-term microgravity, with and without concurrent resistance exercise, on skeletal muscle oxidative and glycolytic capacity. Twenty-one men were subjected to 84 days head-down tilt bed rest with (BRE; n = 9) or without (BR; n = 12) concurrent flywheel resistance exercise. Activity and gene expression of glycogen synthase, glycogen phosphorylase (GPh), hexokinase, phosphofructokinase-1 (PFK-1), and citrate synthase (CS), as well as gene expression of succinate dehydrogenase (SDH), vascular endothelial growth factor (VEFG), peroxisome proliferator-activated receptor gamma coactivator-1 (PGC-1α), and myostatin, were analyzed in samples from m...
January 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27913335/frequency-measurement-system-of-optical-clocks-without-a-flywheel-oscillator
#12
Miho Fujieda, Tetsuya Ido, Hidekazu Hachisu, Tadahiro Gotoh, Hiroshi Takiguchi, Kazuhiro Hayasaka, Kenji Toyoda, Kenji Yonegaki, Utako Tanaka, Shinji Urabe
We developed a system for the remote frequency comparison of optical clocks. The system does not require a flywheel oscillator at the remote end, making it possible to evaluate optical frequencies even in laboratories, where no stable microwave reference, such as an Rb clock, a Cs clock, or a hydrogen maser exists. The system is established by the integration of several systems: a portable carrier-phase two-way satellite frequency transfer station and a microwave signal generation system by an optical frequency comb from an optical clock...
December 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27908792/freebie-rhabdomyolysis-a-public-health-concern-spin-class-induced-rhabdomyolysis
#13
Maureen Brogan, Rudrick Ledesma, Alan Coffino, Praveen Chander
BACKGROUND: Rhabdomyolysis is a pathologic condition in which intracellular muscle constituents leak into the blood circulation. It is usually caused by muscle trauma. "Spinning" is an indoor form of cycling where participants use a special stationary exercise bicycle with a weighted flywheel and undergo high-intensity cycling classes focusing on endurance. There have been several case reports in the literature of exertional rhabdomyolysis following spin class. METHODS: Our nephrology practices have diagnosed a number of cases of symptomatic patients presenting to our emergency departments following their first spin classes, with histories and creatinine phosphokinase levels diagnostic of exertional rhabdomyolysis...
April 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/27705034/the-high-pull-exercise-a-comparison-between-a-versapulley-flywheel-device-and-the-free-weight
#14
F Javier Núñez, Luis J Suarez-Arrones, Paul Cater, Alberto Mendez-Villanueva
The aim of this study was to examine the kinematics and kinetics (force, velocity, and acceleration) and blood lactate concentration with the VersaPulley (VP) device in comparison with free-weight (FW) exercise at a similar external load. Fifteen rugby players randomly performed 2 training sessions of 6 sets of 6 repetitions with 20 s of recovery between sets of the high-pull exercise with the VP and the FW. The training sessions were separated by 72 h. Barbell displacement (cm), peak velocity (m/s), peak acceleration (m/s(2)), mean propulsive velocity (m/s), mean propulsive acceleration (m/s(2)), propulsive phase (%), and mean and maximal force (N) were continuously recorded during each repetition...
April 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27669183/effects-of-inertial-setting-on-power-force-work-and-eccentric-overload-during-flywheel-resistance-exercise-in-women-and-men
#15
Luis Manuel Martinez-Aranda, Rodrigo Fernandez-Gonzalo
Exercise load is a key component in determining end-point adaptations to resistance exercise. Yet, there is no information regarding the use of different inertia (i.e. loads) during iso-inertial flywheel resistance exercise, a very popular high-intensity training model. Thus, this study examined power, work, force and eccentric-overload produced during flywheel resistance exercise with different inertial settings in men and women. Twenty-two women (n=11) and men (n=11) performed unilateral (in both legs) isolated concentric (CON) and coupled CON and eccentric (ECC) exercise in a flywheel knee extension device employing six inertias (0...
September 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27618131/the-high-pull-exercise-a-comparison-between-a-versapulley-flywheel-device-and-the-free-weight
#16
F Javier Núñez, Luis J Suarez-Arrones, Paul Cater, Alberto Mendez-Villanueva
The aim of this study was to examine the kinematics and kinetics (force, velocity and acceleration) and blood lactate concentration of the Versapulley (VP) device in comparison with free weight (FW) exercise at a similar external load. Fifteen rugby players randomly performed two training sessions of 6 sets of 6 repetitions with 20 s of recovery in between sets of the high pull exercise with the VP and the FW. Both training sessions were separated by 72 h. Barbell displacement (cm.), peak velocity (m/s), peak acceleration (m/s2), mean propulsive velocity (m/s), mean propulsive acceleration (m/s2), propulsive phase (%), mean and maximal force (Newtons) were continuously recorded during each repetition...
September 6, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27583444/mri-based-regional-muscle-use-during-hamstring-strengthening-exercises-in-elite-soccer-players
#17
Alberto Mendez-Villanueva, Luis Suarez-Arrones, Gil Rodas, Rodrigo Fernandez-Gonzalo, Per Tesch, Richard Linnehan, Richard Kreider, Valter Di Salvo
The present study examined site-specific hamstring muscles use with functional magnetic resonance imaging (MRI) in elite soccer players during strength training. Thirty-six players were randomized into four groups, each performing either Nordic hamstring, flywheel leg-curl, Russian belt or the hip-extension conic-pulley exercise. The transverse relaxation time (T2) shift from pre- to post-MRI were calculated for the biceps femoris long (BFl) and short (BFs) heads, semitendinosus (ST) and semimembranosus (SM) muscles at proximal, middle and distal areas of the muscle length...
2016: PloS One
https://www.readbyqxmd.com/read/27457914/impact-of-inertial-training-on-strength-and-power-performance-in-young-active-men
#18
RANDOMIZED CONTROLLED TRIAL
Mariusz Naczk, Alicja Naczk, Wioletta Brzenczek-Owczarzak, Jarosław Arlet, Zdzisław Adach
Naczk, M, Naczk, A, Brzenczek-Owczarzak, W, Arlet, J, and Adach, Z. Impact of inertial training on strength and power performance in young active men. J Strength Cond Res 30(8): 2107-2113, 2016-This study evaluated how 5 weeks of inertial training using 2 different loads influenced strength and power performance. Fifty-eight male physical education students were randomly divided into training and control groups. The 2 training groups (T0 and T10) performed inertial training 3 times per week for 5 weeks using the new Inertial Training and Measurement System (ITMS)...
August 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27233772/-it-just-has-to-click-internists-views-of-what-constitutes-productive-interactions-with-chronically-ill-patients
#19
N M H Kromme, C T B Ahaus, R O B Gans, H B M van de Wiel
BACKGROUND: According to the Chronic Care Model, productive interactions are crucial to patient outcomes. Despite productive interactions being at the heart of the Model, however, it is unclear what constitutes such an interaction. The aim of this study was to gain a better understanding of physician views of productive interactions with the chronically ill. METHOD: We conducted a qualitative study and interviewed 20 internists working in an academic hospital. The data were analyzed using a constructivist approach of grounded theory...
May 27, 2016: BMC Health Services Research
https://www.readbyqxmd.com/read/27131676/flywheel-induction-motor-generator-for-magnet-power-supply-in-small-fusion-device
#20
S Hatakeyma, F Yoshino, H Tsutsui, S Tsuji-Iio
A flywheel motor-generator (MG) for the toroidal field (TF) coils of a small fusion device was developed which utilizes a commercially available squirrel-cage induction motor. Advantages of the MG are comparably-long duration, quick power response, and easy implementation of power control compared with conventional capacitor-type power supply. A 55-kW MG was fabricated, and TF coils of a small fusion device were energized. The duration of the current flat-top was extended to 1 s which is much longer than those of conventional small devices (around 10-100 ms)...
April 2016: Review of Scientific Instruments
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