The Use of the Blood Lactate Curve to Develop Training Intensity Guidelines for the Sports of Track and Field and Cross-Country

Int J Exerc Sci 5(2) : 148-159, 2012. The purpose of this study was to develop and field test a standardized system of training intensity guidelines for the sport of track and field/cross country, modeled after the standardized system of training intensity guidelines developed, adopted, and in use by U.S.A. Swimming. This study was quantitative and focused on the development and field-testing of standardized training intensity guidelines, based on the blood lactate curve and energy metabolism. The findings showed that as intensity increased so did participants’ blood lactate concentration, heart rate, and ratings of perceived exertion. A Pearson product-moment correlation analysis between the mean values of blood lactate concentration, heart rate, and ratings of perceived exertion, and the corresponding training intensity ranges revealed significant positive correlations between mean blood lactate values (r = 0.99, p \u3c 0.001), mean heart rate (r = 0.96, p \u3c 0.001); and ratings of perceived exertion (r = 0.99, p \u3c 0.005). Correlation analyses between heart rate and measures of blood lactate were positive (r = 0.70, p \u3e 0.05), as were heart rate and ratings of perceived exertion (r = 0.96, p \u3c 0.005). Measures of blood lactate were positively and significantly correlated to ratings of perceived exertion (r = 0.82, p \u3c 0.05). These findings validated the training intensity guidelines model

Cytomegalovirus induced hemophagocytic lymphocytic histiocytosis in two pediatric patients with acute lymphoblastic leukemia

Hemophagocytic lymphohistiocytosis (HLH) is a rare inflammatory condition with tissue destruction due to abnormal immune activation. We present a series of 2 cases of cytomegalovirus-induced HLH in children during maintenance chemotherapy for acute lymphoblastic leukemia. These cases emphasize the importance of considering secondary HLH in this high-risk subset of pediatric patients

Japanese Intentions for the Pearl Harbor Bombing

https://scholarworks.moreheadstate.edu/student_scholarship_posters/1024/thumbnail.jp

Hardware Design Improvements to the Major Constituent Analyzer

The Major Constituent Analyzer (MCA) onboard the International Space Station (ISS) is designed to monitor the major constituents of the ISS's internal atmosphere. This mass spectrometer based system is an integral part of the Environmental Control and Life Support System (ECLSS) and is a primary tool for the management of ISS atmosphere composition. As a part of NASA Change Request CR10773A, several alterations to the hardware have been made to accommodate improved MCA logistics. First, the ORU 08 verification gas assembly has been modified to allow the verification gas cylinder to be installed on orbit. The verification gas is an essential MCA consumable that requires periodic replenishment. Designing the cylinder for subassembly transport reduces the size and weight of the maintained item for launch. The redesign of the ORU 08 assembly includes a redesigned housing, cylinder mounting apparatus, and pneumatic connection. The second hardware change is a redesigned wiring harness for the ORU 02 analyzer. The ORU 02 electrical connector interface was damaged in a previous on-orbit installation, and this necessitated the development of a temporary fix while a more permanent solution was developed. The new wiring harness design includes flexible cable as well as indexing fasteners and guide-pins, and provides better accessibility during the on-orbit maintenance operation. This presentation will describe the hardware improvements being implemented for MCA as well as the expected improvement to logistics and maintenance

Session B8- Evaluating Diadromous Fish Passage at Lower Shannock Falls Dam Removal and Nature-like Weir Installation, Pawcatuck River, Rhode Island

The Lower Shannock Falls dam, a defunct, run-of-the river timber-crib dam situated on bedrock ledge, and located on the Pawcatuck River in southwestern Rhode Island, was removed in summer 2010. The target species for this fish passage restoration include river herring, American shad, American eel, and Atlantic salmon, as well as resident trout. Besides dam removal, additional construction work activities were completed for purposes of improving target species passage efficiency: three nature-like stone weirs were constructed for purposes of providing backwatering effects downstream of the dam removal; and bedrock ledge was modified to eliminate significant hydraulic drops. During construction, test flows were released through the weirs and restored river reach to evaluate hydraulics of the passage site. Based on test flows, several large boulders were installed as adaptive measures to improve upon site hydraulics. Post-construction velocity and depth measurements were completed in fall 2010 and spring 2011 to evaluate passage performance. This presentation will compare the results of the field monitoring with the as-built features and HEC-RAS and Fish Flow modeled hydraulic conditions for the site. Discussion will also include upstream passage conditions that resulted from impoundment drawdown and channel restoration. This project exemplifies Northeastern U.S. dam removals where underlying bedrock may have an effect on passage efficiency, and in-channel work activities may be beneficial to improving upon historic passage conditions. The project is being evaluated as a case study site for a web-based fish passage manual being developed jointly by NOAA-USGS-USFWS, scheduled for release in 2012

Symptom recognition and perceived urgency of help-seeking for rheumatoid arthritis and other diseases in the general public: A mixed method approach.

OBJECTIVE: Clinical outcomes in rheumatoid arthritis (RA) are improved if the disease is treated early. However, treatment is often significantly delayed as a result of delayed help-seeking by patients who fail to recognise its symptoms or the need for rapid medical attention. Two studies were conducted to investigate the role of symptom recognition in help-seeking for the symptoms of RA and compared this with angina and bowel cancer. METHODS: A qualitative interview study with 31 individuals and a survey of 1088 members of the general public (all without RA) were conducted. Both studies used vignettes describing the symptoms of RA, bowel cancer and angina. Participants made causal attributions and rated the perceived seriousness of the symptoms and the urgency with which they would seek medical help if confronted with these symptoms. RESULTS: Only a small proportion of participants in both studies recognised the symptoms of RA, whereas the symptoms of bowel cancer and angina were readily recognised by many participants and considered to be more serious and to require more rapid medical attention (Z values of 14.7 to 34.2, p<.001). CONCLUSION: Accurate symptom attribution and the perception that symptoms are indicative of a serious underlying condition are both important drivers for rapid help-seeking. In the case of angina and bowel cancer, recent campaigns have promoted not only recognition of symptoms and their seriousness, but also emphasised the consequences of not seeking timely help. Our results suggest that these consequences should also be addressed in any public health campaign for RA. This article is protected by copyright. All rights reserved

Global meteorological influences on the record UK rainfall of winter 2013-14

The UK experienced record average rainfall in winter 2013–14, leading to widespread and prolonged flooding. The immediate cause of this exceptional rainfall was a very strong and persistent cyclonic atmospheric circulation over the North East Atlantic Ocean. This was related to a very strong North Atlantic jet stream which resulted in numerous damaging wind storms. These exceptional meteorological conditions have led to renewed questions about whether anthropogenic climate change is noticeably influencing extreme weather. The regional weather pattern responsible for the extreme UK winter coincided with highly anomalous conditions across the globe. We assess the contributions from various possible remote forcing regions using sets of ocean–atmosphere model relaxation experiments, where winds and temperatures are constrained to be similar to those observed in winter 2013–14 within specified atmospheric domains. We find that influences from the tropics were likely to have played a significant role in the development of the unusual extra-tropical circulation, including a role for the tropical Atlantic sector. Additionally, a stronger and more stable stratospheric polar vortex, likely associated with a strong westerly phase of the stratospheric Quasi-Biennial Oscillation (QBO), appears to have contributed to the extreme conditions. While intrinsic climatic variability clearly has the largest effect on the generation of extremes, results from an analysis which segregates circulation-related and residual rainfall variability suggest that emerging climate change signals made a secondary contribution to extreme rainfall in winter 2013–14