The Abdominal Musculature and Cycling Performance

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Effect of Death Jumps and Back Squats on Eliciting Postactivation Potentiation for a 40-meter Sprint

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Comparison of Maximal and Supramaximal Verification Tests

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Post Activation Potentiation of Back Squat and Trap Bar Deadlift on Acute Sprint Performance

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CLT forbindelse i høybygg

Styrken i CLT er lavere vinkelrett på fibrene i treet, noe som gjør forbindelser sårbare for høye påkjenninger i denne retningen. I større bygninger laget av det nevnte materialet, må vi være forsiktige med utformingen av vegg-gulv-vegg-forbindelser der disse kreftene er store nok til å overgå denne kapasiteten. Vår gruppe har gjennom tilgjengelig informasjon om emnet skapt et design som bruker treets naturlige egenskaper til vår fordel. I tillegg til dette undersøker vi hvilke innflytelser som er betydelige, og alle faktorene som bidrar til å skape den mest praktiske løsningen. Dette gir oss den oppnådde forbindelsen. Kapasitetstester, strukturanalyse og annen relevant forskning gir oss nok informasjon til å bekrefte at designet er bedre enn andre alternativer. Til tross for at vi ikke beregner vindkreftene og seismiske handlinger på strukturen, bruker vi sunn fornuft og teknisk bakgrunn til å nå denne konklusjonen.The fibers in CLT have lower strength perpendicular to the grain, which makes connections vulnerable to high stresses in this direction. In larger buildings made of the material mentioned, we must be careful in design of wall-floor-wall connections where these forces are large enough to cover the capacity of this strength. Our group have through available information about the subject created a design that use the natural properties of the wood in our advantage. As well as this we contemplate about what makes a great joint, and all the factors contributing to create the most practical one. This gives us the achieved connection. Capacity tests, structure analysis and other relevant research provide us with enough information to confirm that the design is superior to other alternatives. Despite the fact that we do not calculate the wind forces and seismic actions on the structure, we use common sense and engineering reason to reach this conclusion

Effects of a Three-week Core Training Program on Different Unstable Platforms

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Effects Of Plyometric and Endurance Training on Aerobic and Anaerobic Power.

Snyder, T., Shaw, E., Mueller, A., Stoeckel, E., Strom, A., VanDerVeeken, T., Swensen, T., Exercise and Sport Sciences, Ithaca College, Ithaca NY Purpose and Methods: Extending the work of Burgomaster and Gibala, we compared the effects of four weeks of plyometric and endurance training on various indices of aerobic and anaerobic performance in 29 active college age males and females (19.4 ± 1.8 years and 69.9 ± 13.8 kg), who were assigned to a plyometric (6 males and 9 females) or endurance training group (6 males and 8 females). Endurance training consisted of 30 min of cycling at a heart rate corresponding to 75% of VO2 max; plyometric training consisted of various jumps and lunges, yielding 120 foot to ground touches. Both groups trained 30 min.d-1, 3 d.wk-1 for four weeks; workouts were preceded and followed by a warm-up and cool down. Cycle VO2 max, 2-mile cycling time trial (TT) performance, and Wingate 30 s peak (PPO) and mean power output (MPO) were assessed before and after training. Data were compared with a repeated measures ANOVA. Results: Mean (SD) for dependent variables and % change are shown. * indicates significant changes across time. There were no differences between groups before and after training for any variable. Even though the magnitude of change for each variable was larger with cycle training, plyometric training did improve VO2 max by 7.1%, and PPO and MPO by 11 and 12%, respectively. Further, the 3.4% change in TT performance following plyometric training was nearly significant (p=0.063). Conclusion: Plyometric training is an effective means by which to enhance indices of aerobic and anaerobic fitness. This project was funded by Ithaca College

Proinsulin Secretion Is a Persistent Feature of Type 1 Diabetes

OBJECTIVE: Abnormally elevated proinsulin secretion has been reported in type 2 and early type 1 diabetes when significant C-peptide is present. We questioned whether individuals with long-standing type 1 diabetes and low or absent C-peptide secretory capacity retained the ability to make proinsulin. RESEARCH DESIGN AND METHODS: C-peptide and proinsulin were measured in fasting and stimulated sera from 319 subjects with long-standing type 1 diabetes (≥3 years) and 12 control subjects without diabetes. We considered three categories of stimulated C-peptide: 1) C-peptide positive, with high stimulated values ≥0.2 nmol/L; 2) C-peptide positive, with low stimulated values ≥0.017 but <0.2 nmol/L; and 3) C-peptide <0.017 nmol/L. Longitudinal samples were analyzed from C-peptide-positive subjects with diabetes after 1, 2, and 4 years. RESULTS: Of individuals with long-standing type 1 diabetes, 95.9% had detectable serum proinsulin (>3.1 pmol/L), while 89.9% of participants with stimulated C-peptide values below the limit of detection (<0.017 nmol/L; n = 99) had measurable proinsulin. Proinsulin levels remained stable over 4 years of follow-up, while C-peptide decreased slowly during longitudinal analysis. Correlations between proinsulin with C-peptide and mixed-meal stimulation of proinsulin were found only in subjects with high stimulated C-peptide values (≥0.2 nmol/L). Specifically, increases in proinsulin with mixed-meal stimulation were present only in the group with high stimulated C-peptide values, with no increases observed among subjects with low or undetectable (<0.017 nmol/L) residual C-peptide. CONCLUSIONS: In individuals with long-duration type 1 diabetes, the ability to secrete proinsulin persists, even in those with undetectable serum C-peptide

Sensitivity and specificity of lung cancer screening using chest low-dose computed tomography

Lung cancer screening programmes using chest X-ray and sputum cytology are routinely performed in Japan; however, the efficacy is insufficient. Screening using low-dose computed tomography (CT) is a more effective approach and has the potential to detect the disease more accurately. A total of 7183 low-dose CT screening tests for 4689 participants and 36 085 chest X-ray screening tests for 13 381 participants were conducted between August 1998 and May 2002. Sensitivity and specificity of lung cancer screening were calculated by both the detection method and the incidence method by linkage of the screening database and the Cancer Registry database. The preclinical detectable phase was assumed to be 1 year. Sensitivity and specificity by the detection method were 88.9 and 92.6% for low-dose CT and 78.3 and 97.0% for chest X-ray, respectively. Sensitivity of low-dose CT by the incidence method was 79.5%, whereas that of chest X-ray was 86.5%. Lung cancer screening using low-dose CT resulted in higher sensitivity and lower specificity than traditional screening according to the detection method. However, sensitivity by the incidence method was not as high as this. These findings demonstrate the potential for overdiagnosis in CT screening-detected cases