Effects of high-intensity interval training on cardiometabolic risk factors in overweight/obese women

The purpose of this study was to evaluate two practical interval training protocols on cardiorespiratory fitness, lipids and body composition in overweight/obese women. Thirty women (mean ± SD; weight: 88.1 ± 15.9 kg; BMI: 32.0 ± 6.0 kg · m²) were randomly assigned to ten 1-min high-intensity intervals (90%VO₂ peak, 1 min recovery) or five 2-min high-intensity intervals (80–100% VO₂ peak, 1 min recovery) or control. Peak oxygen uptake (VO₂ peak), peak power output (PPO), body composition and fasting blood lipids were evaluated before and after 3 weeks of training, completed 3 days per week. Results from ANCOVA analyses demonstrated no significant training group differences for any primary variables (P > 0.05). When training groups were collapsed, 1MIN and 2MIN resulted in a significant increase in PPO (?18.9 ± 8.5 watts; P = 0.014) and time to exhaustion (?55.1 ± 16.4 s; P = 0.001); non-significant increase in VO₂ peak (?2.36 ± 1.34 ml · kg^?1 · min^?1; P = 0.185); and a significant decrease in fat mass (FM) (??1.96 ± 0.99 kg; P = 0.011). Short-term interval exercise training may be effective for decreasing FM and improving exercise tolerance in overweight and obese women.     

Estimating fat-free mass in elite-level male rowers: a four-compartment model validation of laboratory and field methods

The purpose of this study was to investigate the accuracy of fat-free mass (FFM) estimates from two-compartment (2C) models including air displacement plethysmography (ADP), ultrasound (US), near-infrared interactance (NIR), and the Jackson and Pollock skinfold equation (SKF) against a criterion four-compartment (4C) model in elite male rowers. METHODS: Twenty-three elite-level male rowers (mean± SD; age 24.6 ± 2.2 years; stature: 191.4 ± 7.2 cm; mass: 87.2 ± 11.2 kg) participated in this investigation. All body composition assessments were performed on the same day in random order, except for hydrostatic weighing (HW), which was measured last. FFM was evaluated using a 4C model, which included total body water from bioimpedance spectroscopy, body volume from HW, and total body bone mineral via dual-energy X-ray absorptiometry. The major findings of the study were that the 2C models evaluated overestimated FFM and should be considered with caution for the assessment of FFM in elite male rowers. Future studies should use multiple-compartment models, with measurement of TBW and bone mineral content, for the estimation of FFM.     

Development of an Online Orientation for an Instructional Technology Masters Program

Four graduate students were tasked with creating a real-world solution to a problem faced by the instructional technology masters program in which they were participating. While taking an online course in multimedia instructional product development, part of East Carolina University??s Masters of Science in Instructional Technology degree program, a team of students faced the challenges of being physically separated, lacking some software and hardware tools, and the relatively brief development period of a semester??s time, to produce supplemental instructional content for students new to the masters program. Working from locations scattered throughout North Carolina, the production team found the time and resources, and relied on the strengths of individual team members, to produce an online orientation for students new to the instructional technology masters program.     

Undergraduates’ text messaging language and literacy skills

Research investigating whether people’s literacy skill is being affected by the use of text messaging language has produced largely positive results for children, but mixed results for adults. We asked 150 undergraduate university students in Western Canada and 86 in South Eastern Australia to supply naturalistic text messages and to complete nonword reading and spelling tasks. The Australian students also completed two further real word and nonword reading tasks, a spoonerisms task, a questionnaire regarding their reading history, and a nonverbal reasoning task. We found few significant correlations between literacy scores and both use of textisms (such as u for you) and measures of texting experience. Specifically, textism use was negatively correlated with spelling for the Canadian students, and with scores for timed nonword reading, spoonerisms, and Adult Reading History for the Australian students. Length of phone ownership was negatively correlated with spelling (Canadians), but positively correlated with Word Attack scores (Australians), whereas daily message sending volumes were negatively correlated with Word Attack scores (Australians). Australian students who thought that using textisms was more appropriate had poorer nonword reading and reported having had more difficulty learning to read, than those who found it less appropriate. We conclude that there is inconsistent evidence for negative relationships between adults’ use of textisms and their literacy skills, and that these associations may be influenced by attitudes towards the appropriateness of textism use. A model of the potential relationship between adults’ textism use and literacy skills is presented.     

Using Multimedia Graphic Organizer Software in the Prewriting Activities of Primary School Students: What Are the Benefits?

The use of multimedia graphic organizer software and how it influenced the prewriting process for primary school children were evaluated. An analysis of writing samples generated by second-grade students with diverse writing abilities was carried out. Students were given two opportunities to participate in prewriting activities—one without and one with the use of multimedia graphic organizer software. The results indicated that the use of multimedia graphic organizer software can provide some benefits to writing for elementary school children.