Which aspects of socio-economic status are related to health in mid-aged and older women?

A population-based study was conducted to validate gender- and age-specific indexes of socio-economic status (SES) and to investigate the associations between these indexes and a range of health outcomes in 2 age cohorts of women. Data from 11,637 women aged 45 to 50 and 9,510 women aged 70 to 75 were analyzed. Confirmatory factor analysis produced four domains of SES among the mid-aged cohort (employment, family unit, education, and migration) and four domains among the older cohort (family unit, income, education, and migration). Overall, the results supported the factor structures derived from another population-based study (Australian Bureau of Statistics, 1995), reinforcing the argument that SES domains differ across age groups. In general, the findings also supported the hypotheses that women with low SES would have poorer health outcomes than higher SES women, and that the magnitude of these effects would differ according to the specific SES domain and by age group, with fewer and smaller differences observed among older women. The main exception was that in the older cohort, the education domain was significantly associated with specific health conditions. Results suggest that relations between SES and health are highly complex and vary by age, SES domain, and the health outcome under study.

Some aspects of photosynthetic characteristics in a set of perennial irrigation reservoirs located in five river basins in Sri Lanka

Phytoplankton primary productivity of eleven irrigation reservoirs located in five river basins in Sri Lanka was determined on a single occasion together with light climate and nutrient concentrations. Although area-based gross primary productivity (1.43–11.65 g O2 m−2 d−1) falls within the range already established for tropical water bodies, net daily rate was negative in three water bodies. Light-saturated optimum rates were found in water bodies, with relatively high algal biomass, but photosynthetic efficiency or specific rates were higher in water bodies with low algal biomass, indicating nutrient limitation or physiological adaptation of phytoplankton. Concentrations of micronutrients and algal biomass in the reservoirs are largely altered by high flushing rate resulting from irrigation release. Underwater light climate and nutrient availability control the rate of photosynthesis and subsequent areabased primary production to a great extent. However, morpho-edephic index or euphotic algal biomass in the most productive stratum of the water column is not a good predictor of photosynthetic capacity or daily rate of primary production of these shallow tropical irrigation reservoirs.

The painful nonruptured tendon : clinical aspects

Tendon injuries account for a substantial proportion of overuse injuries in competitive and recreational sports participants, as well as in individuals whose jobs require repetitive activity. Overuse type injuries account for 30% to 50% of all sports injuries, and in many endurance and power sports tendon injuries are clearly the most frequent reason for interruptions to training and competition [1] . Because tendon problems are so common, and not easily managed, this issue of Clinics is devoted to them. This article aims to provide an understanding of the pathology underlying the conditions before outlining current evidence for clinical assessment and treatment of tendinopathies.

Being explicit about aspects of mathematics pedagogy

It is conventional wisdom that contextualising mathematics tasks can make them more meaningful for students, and that open-ended questions create opportunities for student engagement. Yet concerns are emerging that strategies such as these may exacerbate the disadvantage of some. We report data from a project that seeks to address such concerns by encouraging teachers to be explicit about aspects of their pedagogy. Men teachers were explicit about aspects of the pedagogy, the students responded in the direction intended.

The influence of various aspects of enjoyment on participation in leisure time physical activity

This study examines the direct and indirect influence of various aspects of enjoyment, including activity enjoyment, enjoyment conceptualised as physical/environmental, and enjoyment conceptualised as social interaction, on regular participation in leisure-time physical activity (LTPA). The study was cross-sectional and used self-report questionnaires to collect data from a random sample of 250 people aged 19-87 years living in an Australian city. Questionnaires included demographic items and scales to measure enjoyment of LTPA, prioritisation of LTPA and regularity of participation in LTPA. The findings suggest that the influence of enjoyment on participation in LTPA is complex. Aspects of enjoyment have varying levels of influence on participation in LTPA and this influence is indirect through preference for LTPA, life priority of LTPA and making time for LTPA. Policies, programs and strategies by government and practitioners that aim to increase participation in LTPA should primarily aim to enhance activity enjoyment, rather than focusing on other aspects of participation. Theoretically, this study suggests that enjoyment is a multidimensional concept and that enjoyment is a part of a larger decision-making process influencing participation in LTPA.