Sports betting and other gambling in athletes, fans, and other college students

Gambling on college and professional sports and the influence of attending colleges with differing levels of "sports interest" were examined among athletes, sports fans, and other students (N = 10,559) at 119 colleges in the United States using multilevel statistical analysis. Athletes and fans reported more sports gambling compared to other students, with no differences between athletes and fans. Male students were more likely to gamble than female students, but gender did not moderate the relationship between athletic participation and sports gambling. Students attending schools with a greater "sports interest" were more likely to gamble on college sports after adjusting for individual characteristics. Athletes, sports fans, and students attending schools with high "sports interest" are appropriate targets for prevention efforts.     

Controlling droplet incubation using close-packed plug flow

Controlling droplet incubation is critical for droplet-based microfluidic applications; however, current techniques are either of limited precision or place strict limits on the incubation times that can be achieved. Here, we present a simple technique to control incubation time by exploiting close-packed plug flow. In contrast to other techniques, this technique is applicable to very short and very long incubation times.     

转移方法和推迟分析对酶活性的影响

目的本研究的第一个目的是模拟在血液收集和分析场所之间针对样品转移可选择的方法,第二个目的是对比同一样本在不同的天数时所得的分析结果.方法26名健康男性(年龄20～50岁)志愿提供血液样本.血液离心后得到的血清,被分成7部分.每一部分都被单独处理以模拟不同的转移方法和存储条件.随后分析每一部分中的乳酸脱氢酶(LDH),乳酸脱氢酶同工酶1(LDH-1),肌酸激酶(CK)和肌酸激酶心型同工酶(CK-MB)的活性.结果CK和CK-MB在基础值和其他样本中所得结果没有显著性差异(P＞0.05);LDH和LDH-1也有相似的结果,只是在模拟不带冰转移时,其结果显著高于基础值(P＜0.05).结论采用带冰的容器转移血液样本,然后冷冻.这样,即使推迟5天测量,其结果也不会受到影响.     

Similarities in siblings' experiences of neglectful parenting behaviors

OBJECTIVE: Researchers and policymakers typically assume that within families, individual children are at an equivalent risk of neglectful behaviors. There is evidence that siblings experience differential parental treatment, and some research suggests that parents may maltreat their children to differing degrees. However, because neglect is typically a family-level construct, there may be a high correlation between siblings for this type of parental behavior. Therefore, our objectives were to investigate the extent to which siblings reported similar parental neglectful behaviors, whether sibling correlations for family-level types of neglectful behaviors were greater than those for child-specific forms of neglectful behaviors, whether high-risk groups differed from lower-risk groups in similarity for sibling reports for neglectful behaviors, and factors predicting differences in sibling reports of parental neglectful behaviors. METHOD: We assessed parental neglectful behaviors using child reports for 59 sibling pairs, representing both clinical and community samples. All children completed the Multidimensional Neglectful Behaviors Scale, which measures both child-specific and family-level neglectful parenting behaviors. RESULTS: Sibling intraclass correlations for neglectful behaviors were high and significant, and there were no differences in sibling correlations between clinical and community samples. Furthermore, there were no differences in correlations for family-level and child-specific items. Opposite sex siblings reported greater differences in parental neglectful behaviors, with boys reporting more neglectful behaviors than girls. CONCLUSIONS: Siblings report similar neglectful parenting behaviors, regardless of whether the family is high-risk or not, and whether neglectful behaviors are measured as a family-level or child-specific phenomenon.     

Using a portable wireless computer lab to provide outreach training to public health workers

Librarians at Louisiana State University Health Sciences Center in Shreveport developed an outreach program for public health workers in north Louisiana. This program provided hands-on training on how to find health information resources on the Web. Several challenges arose during this project. Public health units in the region lacked suitable teaching labs and faced limited travel budgets and tight staffing requirements, which made it impractical for public health workers to travel. One solution to these problems is a portable wireless computer lab that can be set up at each site. The outreach program utilized this approach to present on-site training to public health workers in the region. The paper discusses operational and technical issues encountered in implementing this public health outreach project.     

Is bioelectrical impedance spectroscopy accurate in estimating changes in fat-free mass in judo athletes?

Abstract Bioelectrical impedance spectroscopy (BIS) provides an affordable and practical assessment of fat-free mass (FFM). However, little information is available on the assessment of changes in fat-free mass in top-level athletes using BIS. The aim of this study was to examine the accuracy of BIS in tracking changes in fat-free mass of elite male judo athletes from a period of weight stability to just before competition, using the four-compartment model (4C model) as reference method. In total, 27 elite male judo athletes (age 22.2?±?2.8 years) were evaluated. Measures of body volume assessed by air displacement plethysmography, bone mineral content by dual-energy X-ray absorptiometry, and total-body water assessed with deuterium dilution were used in a 4C model. Fat-free mass was also assessed by BIS (FFM(BIS)). Changes in FFM(BIS) were not significantly different from measured by the reference method (P?=?0.000). Furthermore, the r (2) was 0.62 and the standard error of the estimate was 1.03 kg. The limits of agreement ranged from -3.36 to 2.59 kg with no bias observed. These findings demonstrate the viability of BIS as a valid tool for tracking fat-free mass in elite male judo athletes. However, based on the wide limits of agreement observed, BIS is less valid at an individual level for tracking fat-free mass in these athletes.     

Electromyographic analysis of repeated bouts of eccentric exercise

The repeated bout effect refers to the protective effect provided by a single bout of eccentric exercise against muscle damage from a similar subsequent bout. The aim of this study was to determine if the repeated bout was associated with an increase in motor unit activation relative to force production, an increased recruitment of slow-twitch motor units or increased motor unit synchronization. Surface electromyographic (EMG) signals were recorded from the hamstring muscles during two bouts of submaximal isokinetic (2.6 rad x s(-1)) eccentric (11 men, 9 women) or concentric (6 men, 4 women) contractions separated by 2 weeks. The EMG per unit torque and median frequency were analysed. The initial bout of eccentric exercise resulted in strength loss, pain and muscle tenderness, while the repeated eccentric bout resulted in a slight increase in strength, no pain and no muscle tenderness (bout x time effects, P < 0.05). Strength, pain and tenderness were unaffected by either bout of concentric exercise. The EMG per unit torque and median frequency were not different between the initial and repeated bouts of eccentric exercise. The EMG per unit torque and median frequency increased during both bouts of eccentric exercise (P < 0.01) but did not change during either concentric bout. In conclusion, there was no evidence that the repeated bout effect was due to a neural adaptation.