background: when male animals die, spermatozoa within the body of animal will be degenerated. because of unique chromatin structure of sperm, maybe this degeneration is different from other cells. however there is not any research which considered directly the integrity of sperm dna by keeping the cadaver in refrigerator. objective: the aim of this study was to assess viability, total motility ...

The sigma1 ( 1) receptor represents a unique intracellular neuronal protein modulating several neurotransmitter responses with relevant effects on cognitive functions. We examined here its expression and behavioral efficacy during aging. The 1 receptor expression was examined in young (2 months old) and aged (24 months old) C57BL/6 mouse brain using comparative RT-PCR and immunohistochemistry. ...

The capacity for self-control may underlie successful labor-force entry and job retention, particularly in times of economic uncertainty. Analyzing unemployment data from two nationally representative British cohorts (N = 16,780), we found that low self-control in childhood was associated with the emergence and persistence of unemployment across four decades. On average, a 1-SD increase in self...

Following a developmental analogy, community psychology may be experiencing a "mid-life crisis" as it enters "middle age." The field needs to determine where to go from here. This paper argues that the field should attempt to expand. Expansion can best be accomplished by celebrating the diversity of orientations within the field (e.g., those emphasizing prevention, empowerment, and the ecologic...

BACKGROUND Consistent and predictable seasonal fluctuations in hospitalizations have been demonstrated for diverse communicable and non-communicable health conditions. The objective of this study was to examine the seasonal patterns of all hospitalizations by age and gender in order to determine whether the hospital system for a large geographical area was subject to consistent, predictable tem...

Using the Canadian National Population Health Survey and the recent tax variation across Canadian provinces, this paper examines the impact of cigarette taxes on smoking participation. Consistent with the literature, we find evidence of a heterogeneous response to cigarette taxes among different groups of smokers. Contrary to most studies, we find that the middle age group-which constitutes the...

In general there is a slow decline in physical performance during maturity which becomes more rapid with increasing age. Maximum oxygen uptake ('Y02 max) is regarded as one of the best measurements of physical working capacity; and cross-sectional studies suggest that men lose about 11-14ml.kg-lmin-1 of aerobic power between the ages of 25 and 55 years (Astrand and Rodahl, 1977; Quirion et al, ...

background: previous studies have shown that interaural-time-difference (itd) training can improve localization ability. surprisingly little is, however, known about localization training vis-à-vis speech perception in noise based on interaural time difference in the envelope (itd env). we sought to investigate the reliability of an itd env-based training program in speech-in-noise perception a...

background: elderly patients (>75 years) have constituted the fastest growing portion of the coronary artery bypass grafting (cabg) patient population over the last two decades. of the goals that surgical care for the elderly pursues, cure may be an unfeasible one; nevertheless, palliation and comfort warrant sufficient importance. the present study sought to examine the postoperative course an...

objectives this study aims to detect the effect of selected aerobic exercises on sleep quality in non-athlete middle-aged women. materials and methods fifteen non-athlete middle-aged women participated in this study, all of them suffered from insomnia. pittsburgh questionnaire was used for determining sleep quality in this sample. four indices including sleep duration, sleep disturbance, sleep ...