DYNAMIC STACK PORT SERDES POWER UTILIZATION FOR A SUSTAINABLE DATA STACK

Multiple network switches may be stacked, one atop another, and then interconnected through each switch’s two stack ports (SPs). Within such a stack arrangement, techniques are presented herein that support dynamically reducing the power utilization of a switch’s SP Serializer/Deserializer (SerDes) blocks without interrupting any data traffic. Under aspects of the presented techniques, a switch may transition between different power saving modes, which may include a normal mode (encompassing powering down the SerDes blocks of both of the switch’s SPs), an optimized mode (encompassing reducing the speed of the SP SerDes blocks), and a smart mode (encompassing dynamically powering up and down one of the switch’s SPs based on a budgeting of the network traffic). Under further aspects of the presented techniques, the selection of a power saving mode may be based on a switch’s configuration (such as a standalone arrangement, part of a half-ring topology, or part of a full-ring topology) and a switch’s input traffic bandwidth

THE EFFECT OF FATIGUE ON LOWER LIMB MOTOR VARIABILITY DURING A CONTROLLED REPETITIVE STRETCH-SHORTEN CYCLE TASK

This study evaluated changes in lower limb joint coupling variability during single-leg hopping to exhaustion. Twenty recreationally active male and female participants performed single-leg hopping at 2.2 Hz to a target height. At 0, 20, 40, 60, 80 and 100% of the total duration of hopping, spatio-temporal characteristics and variability of the kneeankle (KA) and hip-knee (HK) joint couplings were determined. There was a significant increase in variability of the KA and HK joint couplings in the flexion-extension axes during the loading and propulsion phases as hopping progressed. However, there was maintenance of performance output characteristics throughout the task. These findings suggest that changes in joint coupling variability may be a compensatory strategy to allow continuous single-leg hopping as the effects of muscular fatigue increase

DOES THE METHOD OF MEASURING CENTRE OF MASS DISPLACEMENT AFFECT VERTICAL STIFFNESS CALCULATION IN SINGLE-LEG HOPPING?

The purpose of this study was to compare vertical stiffness values calculated from two kinetic and two kinematic estimations of the vertical displacement of the centre of mass. Twenty recreationally active male and female participants completed one 15 s single-leg hopping trial at 2.2 Hz with vertical stiffness calculated for the first 10 complete hop cycles. Vertical displacement was estimated using double integration (DI), first principle (FP), sacral marker cluster (SMC) and segmental analysis (SA) methods. Bland-Altman plots demonstrated the SA and DI methods to have a small bias (0.92 kN/m) and tight 95% limits of agreement (-1.16 to 3.08 kN/m). In contrast, the SMC and FP methods underestimated and overestimated vertical stiffness, respectively. These findings suggest the SA and DI methods can be used interchangeably to calculate vertical stiffness

EVALUATION OF PATELLAR TENDON MECHANICAL PROPERTIES AND THE PREFERRED LANDING LEG IN ELITE JUMPING ATHELTES

INTRODUCTION: The purpose of this investigation was to evaluate patellar tendon (PT) mechanical properties in healthy, elite jumping athletes and the association with their preferred landing leg

ACUTE EFFECTS OF MASSAGE ON PASSIVE ANKLE STIFFNESS FOLLOWING AN EXHAUSTIVE STRET CHSHORTEN CYCLE TASK: A PILOT STUDY

This preliminary study evaluated the effect of massage on the passive stiffness of the calf muscle complex following single-leg hopping to volitional exhaustion. Four young and healthy male participants had their ankle taken through full joint excursion to determine the resistance to ankle dorsiflexion both prior to and immediately following hopping. A 10 minute rest and massage were then applied in a random order and follow up measures taken immediately Mer each intervention. Calf muscle stiffness increased in three of the four participants following hopping and two participants had a decrease following massage. This study suggests that changes in calf muscle stiffness are sensitive to both exercise and massage. It is important to determine the underlying mechanism(s) to changes in calf stiffness following exercise and whether massage offers any benefit

SEX DIFFERENCES IN LOWER LIMB MOVEMENT VARIABILITY DURING A FATIGUING REPETITIVE LOADING TASK

This study evaluated differences in lower limb joint coupling variability between recreationally-active male (n = 21) and female participants (n = 20) during single-leg hopping to exhaustion. Spatio-temporal characteristics and variability of the knee-ankle and hip-knee joint couplings were determined over the duration of hopping. As fatigue progressed joint coupling variability increased by a greater magnitude in females compared to males. Females had significantly lower variability compared to males in the knee-ankle couplings during the propulsion phase at the beginning of the trial but this effect progressively disappeared during the trial. These findings suggest that as fatigue progresses, there is a regression to a similar magnitude of joint coupling variability which may represent a common level of synchronous joint interaction between sexes

Curbing COVID-19: the quest continues in time

The menace of Coronavirus Disease-19 (COVID-19) has made life more and more challenging throughout the world. Amidst these difficult times, doctors have proved their exceptional worth. They have performed their duties with notable dedication, diligence, resilience, and compassion. Here we share our experiences from the State of Rajasthan in Northern India. We were benefitted by very early lockdown by the Government, preventive strategies of containment, and the most effective contact tracing program. The creation of hundreds of surveillance teams and rapid response teams (RRT) was instrumental for the containment program. This was coupled with outstanding medical care exemplified by Sawai Man Singh Medical College Hospital (SMSMCH) at Jaipur, the capital city of Rajasthan. The mortality rate-limiting to 1.98% in Rajasthan has been an outcome of the amalgamation of brisk administrative action, government support, and visionary action and the best of health care facilities. Our COVID-19 management program strategy was based on the advanced treatment guidelines from the Indian Council of Medical Research, New Delhi, India, and the Ministry of Health and Family Welfare, Government of India.   References Gao Y, Li T, Han M, Li X, Wu D, Xu Y, et al. Diagnostic utility of clinical laboratory data determinations for patients with the severe COVID-19. J Med Virol. 2020;92(7):791-796. https://doi.org/10.1002/jmv.25770. Covid-19 data for Rajasthan, India. Available from: https://www.covid19india.org/state/RJ. [Accessed on 17 July 2020]. Clinical Management Protocol: Covid-19. Version 5, 03/07/20. Available from: http://www.rajswasthya.nic.in/PDF/COVID%20-19/FOR%20HOSPITALS/03.07.2020.pdf. [Accessed on 17 July 2020] Brown BL, McCullough J. Treatment for emerging viruses: Convalescent plasma and COVID-19. Transfus Apher Sci. 2020;59(3):102790. https://doi.org/10.1016/j.transci.2020.102790. Bhatnagar T, Murhekar MV, Soneja M, Gupta N, Giri S, Wig N, et al. Lopinavir/ritonavir combination therapy amongst symptomatic coronavirus disease 2019 patients in India: Protocol for restricted public health emergency use. Indian J Med Res. 2020;151(2 & 3):184-189. https://doi.org/10.4103/ijmr.IJMR_502_20

A RANDOMISED CONTROLLED TRIAL EVALUATING THE EFFECTS OF COMPRESSION GARMENTS DURING SINGLE-LEG HOPPING TO EXHAUSTION

The purpose of this investigation was to determine the effect of compression garments on spatiotemporal and leg mechanical characteristics during single-leg-hopping (2.2 Hz) to volitional exhaustion. This study demonstrated that compression garments had no significant effect on leg mechanical characteristics or performance parameters of single-leg hopping to volitional exhaustion. There was a significant increase in the duration of the loading phase and decrease in the flight phase from the start to the end during single-leg hopping task indicating that there may have been a shift in the motor control strategy used to preserve vertical leg stiffness and hopping frequency in a repeated and rapid loading task