scholarly journals Perception of changes in bar velocity as a resistance training monitoring tool for trained athletes

2020 ◽  
Author(s):  
Amit Lazarus ◽  
Israel Halperin ◽  
Gal Yosef Vaknin ◽  
Antonio Dello Iacono
Keyword(s):  
Resistance Training ◽  
Absolute Difference ◽  
Average Error ◽  
Monitoring Tool ◽  
Post Intervention ◽  
Optimal Power ◽  
Power Load ◽  
Bar Velocity ◽  
Tracking Devices ◽  
Velocity Tracking

Purpose: To investigate if perception of changes in bar velocity (PCV) can be used as a substitute for velocity tracking devices commonly used to monitor resistance-exercises. Methods: Twenty-one professional male soccer athletes (21.1±4.3 years) first went through a load-power profile assessment to determine their optimal power load in the back-squat. In the next three experimental sessions, athletes completed four sets of six repetitions loaded with optimal power load. Starting from the second repetition, athletes reported their PCV of each repetition as a percentage of the first repetition. Accuracy of PCV was calculated as the absolute difference between PCV and the actual percentage change from the first repetition in bar velocity measured with a linear-encoder. The second and fourth sessions served as the pre- and post-intervention sessions, in which athletes received no feedback about their PCV accuracy. The third session served as the intervention, in which athletes received verbal and visual feedback about their PCV accuracy levels after each set. Results: The estimated accuracy of PCV decreased from an average error of 7% in the pre-intervention to an average error of 4.7% in the post-intervention session (95% confidence levels of difference: 1.5, 3.0). Conclusion: Athletes with velocity based training experience begin with a reasonable PCV accuracy rates which can be meaningfully improved after a single feedback session. When velocity tracking devices are impractical or absent, PCV can be implemented as a resistance training monitoring tool.

scholarly journals Perception of bar velocity in resistance training: Accuracy levels within and between exercises

2020 ◽  
Author(s):  
Mahmood Sindiani ◽  
Amit Lazarus ◽  
Antonio Dello Iacono ◽  
Israel Halperin
Keyword(s):  
Resistance Training ◽  
Bench Press ◽  
Absolute Error ◽  
Percentage Points ◽  
Linear Encoder ◽  
The Absolute ◽  
The Difference ◽  
Velocity Measuring ◽  
Bar Velocity ◽  
Tracking Devices

Velocity-based training is a method used to monitor resistance-training programs based on repetition velocities measured with tracking devices. Since velocity measuring devices can be expensive and impractical, trainee’s perception of velocity (POV) may be used as a possible substitute. Here, 20 resistance-trained males first completed 1RM tests in the bench-press and squat. Then, in three counterbalanced sessions, participants completed four sets of eight repetitions in both exercises using 60%1RM (two-sessions) or 70%1RM. Starting from the second repetition, participants reported their POV of each repetition as a percentage of the first repetition. Accuracy was calculated as the difference between POV and actual-velocity measured with a linear-encoder. Two key findings emerged. First, the absolute error in both exercises was ~5.8 percentage-points in the second repetition, and it increased to 13.2 and 16.7 percentage-points by the eighth repetition, in the bench-press and squat, respectively. Second, participants were 4.2 times more likely to underestimate velocity in the squat. Given the gradual increments in the absolute error, POV may be better suited for sets of fewer repetitions (e.g., 4-5) and wider velocity-loss threshold ranges (e.g., 5-10%). Given the systematic underestimation error in the squat, a correction factor may increase POV accuracy in this exercise.

Perception of changes in bar velocity as a resistance training monitoring tool for athletes

2021 ◽  
Vol 231 ◽  
pp. 113316
Author(s):  
Amit Lazarus ◽  
Israel Halperin ◽  
Gal Josef Vaknin ◽  
Antonio Dello Iacono
Keyword(s):  
Resistance Training ◽  
Monitoring Tool ◽  
Bar Velocity

The Optimum Power Load: A Simple and Powerful Tool for Testing and Training

2021 ◽  
pp. 1-9
Author(s):  
Irineu Loturco ◽  
Antonio Dello Iacono ◽  
Fábio Y. Nakamura ◽  
Tomás T. Freitas ◽  
Daniel Boullosa ◽  
...  
Keyword(s):  
Strong Support ◽  
Current Evidence ◽  
Novel Approach ◽  
Power Load ◽  
Velocity Relationship ◽  
Potential Applications ◽  
Bar Velocity ◽  
Acute And Chronic Effects ◽  
Testing Protocols ◽  
And Training

Purpose: The optimal power load is defined as the load that maximizes power output in a given exercise. This load can be determined through the use of various instruments, under different testing protocols. Specifically, the “optimum power load” (OPL) is derived from the load–velocity relationship, using only bar force and bar velocity in the power computation. The OPL is easily assessed using a simple incremental testing protocol, based on relative percentages of body mass. To date, several studies have examined the associations between the OPL and different sport-specific measures, as well as its acute and chronic effects on athletic performance. The aim of this brief review is to present and summarize the current evidence regarding the OPL, highlighting the main lines of research on this topic and discussing the potential applications of this novel approach for testing and training. Conclusions: The validity and simplicity of OPL-based schemes provide strong support for their use as an alternative to more traditional strength–power training strategies. The OPL method can be effectively used by coaches and sport scientists in different sports and populations, with different purposes and configurations.

scholarly journals Microcontroller Based Portable Incubator Monitoring Tool with Short Message Service (SMS) notifications

2021 ◽  
Vol 2111 (1) ◽  
pp. 012026
Author(s):  
Muhammad Irmansyah ◽  
Efrizon ◽  
Anggara Nasution ◽  
Era Madona
Keyword(s):  
Heart Rate ◽  
Short Message Service ◽  
Average Error ◽  
Short Message ◽  
Monitoring Tool ◽  
Premature Babies ◽  
Pulse Sensor ◽  
Message Service ◽  
Rate Sensor ◽  
Weight Sensor

Abstract The aim of this research was applied a microcontroller, temperature sensor, weight sensor, heart rate sensor and GSM module to monitoring and notification of the condition of premature babies in portable incubators. The hardware used consists of a DS18B20 sensor, Load Cell, Pulse Heart Rate Sensor, Buzzer, LCD and SIM800L Module. The results showed the Pulse sensor and DS18B20 sensor could measure and detect the baby’s heart rate and baby temperature. The result was on the LCD with an average error of 4.354% for heartrate and 1.437% for temperature. The loadcell sensor can detect weight with an error of 2.16%. The duration of sending SMS to Smartphone is 8s for each delivery. SMS was sent if the baby weak and critical condition.

scholarly journals Improving quality and assessment of referrals to the Enfield Crisis Resolution and Home Treatment Team (ECRHTT)

BJPsych Open ◽  
2021 ◽  
Vol 7 (S1) ◽  
pp. S202-S202
Author(s):  
Margarita Kousteni ◽  
John Cousins ◽  
Ajay Mansingh ◽  
Maja Elia ◽  
Yumnah Ras ◽  
...  
Keyword(s):  
Home Treatment ◽  
Absolute Difference ◽  
List Type ◽  
Treatment Team ◽  
Crisis Resolution ◽  
Post Intervention ◽  
Improvement Project ◽  
Consultant Psychiatrist ◽  
The Impact

AimsTriaging referrals to crisis resolution and home treatment teams is a significant undertaking requiring experienced and dedicated staff. We observed that the volume of inappropriate referrals to ECRHTT was high, and that staff processing these often felt inexperienced or lacking in confidence to discharge them back to the referrers and signpost them to appropriate services.The aims of this quality improvement project (QIP) were: a)to reduce the number of inappropriate referrals received by the teamb)to reduce the number of inappropriate referrals accepted by the teamThis would significantly improve access and flow to the service and facilitate better patient care.MethodA pilot study was first completed of the quality (appropriateness/ inappropriateness) and source of all referrals to ECRHTT in January 2019 (n = 177).Subsequently, the consultant psychiatrist for ECRHTT based himself within the assessment team. He was able to closely monitor the referrals, at the same time as providing medical input to patients at their first point of contact. To evaluate the impact of this intervention, the percentage of inappropriate referrals accepted pre- and post-change was compared by re-auditing all referrals received in February 2019 (n = 175).Further interventions were instigated to improve referral quality. These included continuation of psychiatric medical input to the assessment team, teaching sessions for GPs and the crisis telephone service, and weekly meetings with psychiatric liaison and community mental health teams (CMHTs). Change was measured by reassessing the quality of all referrals made to ECRHTT in February 2020 (n = 215).Result46.9% of inappropriate referrals to ECRHTT were accepted in January 2019 compared to 16.9% in February 2019 following the addition of medical input to the assessment team. The absolute difference was 30% (95% CI: 14%–44%, p < 0.001).71% of referrals from GPs were inappropriate in January 2019 compared to 36% in February 2020 post-intervention (difference 35%, 95% CI: 8.84%–55.4%, p < 0.05). Inappropriate referrals from CMHTs decreased from 55.5% to 12% (difference 43.5%, 95% CI: 9.5%–70.3%, p < 0.05). Overall, the percentage of inappropriate referrals fell from 38% to 27.4%, a difference of 10.6% (95% CI: 1.3%–19.8%, p < 0.05). The percentage of inappropriate referrals from liaison teams did not change significantly.ConclusionThis piece of work shows that better engagement with referral sources significantly improved the quality of referrals made to ECRHTT. Interventions included medical input at the point of referral, teaching sessions for general practitioners as well as ongoing liaison with referring teams.

scholarly journals Implementation of an Emergency Department Sepsis Bundle and System Redesign: A Process Improvement Initiative

CJEM ◽  
2016 ◽  
Vol 19 (2) ◽  
pp. 112-121 ◽  
Author(s):  
Tamara McColl ◽  
Mathieu Gatien ◽  
Lisa Calder ◽  
Krishan Yadav ◽  
Ryan Tam ◽  
...  
Keyword(s):  
Emergency Department ◽  
Tertiary Care ◽  
Intervention Group ◽  
Critical Conditions ◽  
Absolute Difference ◽  
Antibiotic Administration ◽  
Post Intervention ◽  
Sepsis Management ◽  
Sepsis Bundle ◽  
Post Intervention Group

AbstractBackgroundIn 2008–2009, the Canadian Institute for Health Information reported over 30,000 cases of sepsis hospitalizations in Canada, an increase of almost 4,000 from 2005. Mortality rates from severe sepsis and septic shock continue to remain greater than 30% in Canada and are significantly higher than other critical conditions treated in the emergency department (ED). Our group formed a multidisciplinary sepsis committee, conducted an ED process of care analysis, and developed a quality improvement protocol. The objective of this study was to evaluate the effects of this sepsis management bundle on patient mortality.MethodsThis before and after study was conducted in two large Canadian tertiary care EDs and included adult patients with suspected severe infection that met at least two systemic inflammatory response syndrome (SIRS) criteria. We studied the implementation of a sepsis bundle including triage flagging, RN medical directive, education campaign, and a modified sepsis protocol. The primary outcomes were 30-day all-cause mortality and sepsis protocol use.ResultsWe included a total of 167 and 185 patients in the pre- and post-intervention analysis, respectively. Compared to the pre-intervention group, mortality was significantly lower in the post-intervention group (30.7% versus 17.3%; absolute difference, 13.4%; 95% CI 9.8–17.0; p=0.006). There was also a higher rate of sepsis protocol use in the post-intervention group (20.3% versus 80.5%, absolute difference 60.2%; 95% CI 55.1–65.3; p<0.001). Additionally, we found shorter time-intervals from triage to MD assessment, fluid resuscitation, and antibiotic administration as well as lower rates of vasopressor requirements and ICU admission.InterpretationThe implementation of our multidisciplinary ED sepsis bundle, including improved early identification and protocolized medical care, was associated with improved time to achieve key therapeutic interventions and a reduction in 30-day mortality. Similar low-cost initiatives could be implemented in other EDs to potentially improve outcomes for this high-risk group of patients.

Abstract WP435: Post Procedural Monitoring Tool Improves the Joint Commission Comprehensive Stroke Center Standard Compliance

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Denise Gaffney ◽  
Lorina Punsalang ◽  
Alvina Mkrtumyan ◽  
Raeesa Dhanji ◽  
David McCartney ◽  
...  
Keyword(s):  
Carotid Endarterectomy ◽  
Electronic Monitoring ◽  
Vital Signs ◽  
Joint Commission ◽  
Monitoring Tool ◽  
Post Intervention ◽  
Comprehensive Stroke Center ◽  
Stroke Center ◽  
Iv Tpa ◽  
The Joint Commission

Background: The Joint Commission (TJC) Comprehensive Stroke Center standard requires monitoring of patients after IV tPA administration, diagnostic angiography, aneurysm coiling, carotid angioplasty and stenting, mechanical endovascular reperfusion (MER) and carotid endarterectomy. Meeting 100% compliance of the standard is challenging. In 2018, monitoring and documentation were among the TJC’s top ten cited survey findings. Purpose: To determine if an electronic tool can improve documentation compliance and reduce delays in monitoring of vital signs, and neurologic, pedal pulse and skin site assessments. Methods: The initiative was implemented in 2018 with the objective for all patients to have 100% of their post procedural monitoring completed. A documentation tool was created and introduced to nursing units via annual stroke education updates. The tool was added to an online nursing resource SharePoint website and application, which was accessible to all nurses within the hospital. The procedure end time was entered in the tool, which automatically calculated the documentation times. Data was compared 12 months pre and post intervention. Analysis and reporting of data were conducted monthly via the program’s quality oversight committee. Data was analyzed using T-Test. Results: In post-IV tPA patients, more patients had 100% complete documentation (79% post vs. 29% pre-implementation; p=0.006). For all post neuro-interventional radiology procedures, more patients had 100% complete documentation (68% post vs. 17% pre-implementation; p<0.001). For post carotid endarterectomy revascularization, there was a trend toward more patients with 100% complete documentation (83% vs 38%; p=0.07). Conclusion: Utilization of an electronic monitoring tool for post procedural documentation adherence can improve the percentage of patients who have 100% completed assessments and help meet the TJC standard.

scholarly journals Estimation of Equivalent Circuit Parameters of Single-Phase Transformer by Using Chaotic Optimization Approach

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1697 ◽  
Author(s):  
Martin Ćalasan ◽  
Danilo Mujičić ◽  
Vesna Rubežić ◽  
Milovan Radulović
Keyword(s):  
Parameter Estimation ◽  
Equivalent Circuit ◽  
Single Phase ◽  
Classical Method ◽  
Short Circuit ◽  
Average Error ◽  
Optimization Approach ◽  
Power Load ◽  
Equivalent Circuit Parameters ◽  
Output Characteristics

This paper deals with parameter estimation of single-phase transformer equivalent circuit by using Chaotic Optimization Approach (COA). Unknown transformer equivalent circuit parameters need to be accurately estimated for the best possible matching between the measured and the estimated transformer output characteristics (for example, output power—load resistance characteristic). Unlike literature approaches which apply different estimation techniques and are based either on the nameplate data or the load data obtained from experiments, in this paper the use of COA is evaluated on both types of input data. For two single-phase transformers, different with respect to machine power and voltage levels, the COA-based parameter estimation is compared to various literature techniques as well as to classical method based on open-circuit and short-circuit tests. The results show that COA outperforms other approaches in terms of average error between the measured and the estimated values of the primary current, secondary current and secondary voltage at full load, or between the measured and the estimated output characteristics. The effectiveness of COA is additionally confirmed through its application on laboratory 2kVA, 220 V/110 V, 50 Hz single-phase transformer.

scholarly journals Effects of Single versus Multiple Bouts of Resistance Training on Maximal Strength and Anaerobic Performance

2018 ◽  
Vol 62 (1) ◽  
pp. 231-240 ◽  
Author(s):  
Kai Shiau ◽  
Te Hung Tsao ◽  
Chang Bin Yang
Keyword(s):  
Resistance Training ◽  
Resistance Exercise ◽  
Bench Press ◽  
Upper Body ◽  
Anaerobic Performance ◽  
Maximal Strength ◽  
Post Intervention ◽  
Significant Difference ◽  
Single Bout ◽  
Before And After

Abstract This study examined the effects of one single bout daily versus triple bouts of resistance exercise for 12 weeks on muscular strength and anaerobic performance of the upper body. Twenty young male adults (age: 22.0 ± 1.0 years, bench press: 44.0 ± 10.3 kg) were randomly assigned to a single bout (SB) or triple bouts (TB) of resistance exercise group. Maximal strength and anaerobic performance of the upper body using the bench press (one-repetition maximum) and the modified 30 s Wingate test were determined before and after the intervention. Additionally, changes in lactate levels before and after the Wingate test were measured. Although the SB and TB groups showed a significant increase in maximal strength (post-intervention, SB: 67.2 ± 9.2 and TB: 67.6 ± 7.6 kg, respectively) compared with the values at pre-intervention (SB: 44.6 ± 11.4 and TB: 43.9 ± 8.7 kg, respectively), there was no significant difference for this variable between the two groups post-intervention (p > 0.05). The anaerobic performance of the upper body in the SB and TB groups also displayed improvements without significant difference between the two groups after the completion of different training regimes. On the basis of the same training volume, multiple bouts of resistance training showed similar improvements in maximal strength and anaerobic performance to one bout of resistance training in young adult men without prior experience in resistance training

Perception of changes in bar velocity in resistance training: Accuracy levels within and between exercises

2020 ◽  
Vol 224 ◽  
pp. 113025
Author(s):  
Mahmood Sindiani ◽  
Amit Lazarus ◽  
Antonio Dello Iacono ◽  
Israel Halperin
Keyword(s):  
Resistance Training ◽  
Bar Velocity
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