Muscle-power quality: does sex or race affect movement velocity in older adults?

To determine sex and race differences in muscle power per unit of muscle contraction, knee-extensor muscle power normalized for knee-extensor muscle volume was measured in 79 middle-aged and older adults (30 men and 49 women, age range 50-85 years). Results revealed that women displayed a 38% faster peak movement velocity than men and African Americans had a 14% lower peak movement velocity than Whites of a similar age when expressed per unit of involved muscle (p < .001). As expected, men exhibited greater knee-extensor strength and peak power per unit of muscle than women, but women had a faster knee- extension movement velocity per unit of muscle than men at the same relative strength level. Moreover, African Americans had greater knee-extensor muscle volume than Whites but exhibited lower knee-extensor strength and lower movement velocity per unit of muscle when tested at the same relative strength levels.     

Physical and psychological outcomes of a supported physical activity program for older carers

This study evaluated health benefits of a supported physical activity program for 116 older carers (mean age 64.4 [SD = 7.9], 85% women). Participants undertook a 6-month center-based physical activity program (strength training, yoga, or Tai Chi). Eighty-eight participants (76%) completed the program. Multivariate repeated-measures ANOVA identified overall significant improvement postintervention (p = .004). Univariate analyses revealed significant improvements for balance, strength, gait endurance, depression, and SF-36 (physical component; p < .05). There was no change in the Zarit Carer Burden Scale (p > .05). Change in performance scores did not differ significantly between those with higher and lower attendance at classes, although there was significantly greater improvement in gait endurance and balance (p < .05) in those attending classes run twice weekly than in those attending once-weekly classes. In conclusion, a carer physical activity program, providing additional carer support to facilitate participation, can achieve high levels of involvement by carers and significant health benefits.     

Age-related changes in musculoskeletal function,balance and mobility measures in men aged 30–80 years

Objectives.?This study aimed to establish age-related changes in musculoskeletal function, balance and mobility measures in men.

Design.?An observational, cross-sectional cohort study was undertaken.

Methods.?One hundred six healthy, community-ambulant men (30–80 years) participated in this study. Recruitment of a convenience sample continued until a minimum of 20 men represented each decade between 30 and 80 years. Demographics (age, height, weight), health and current activity level were recorded. Balance and mobility were measured using the timed up and go test, the step test, functional and lateral reach. Reaction time was determined from limits of stability test. Leg muscle strength was measured with a spring gauge (kg), and ankle flexibility was measured using goniometry.

Results.?Balance, mobility and most strength measures were reduced by the 60s while ankle flexibility declined by the 70s (p?<?0.01). Reaction times increased by the 60s (p?<?0.01).

Conclusion.?This study of men demonstrated reduced musculoskeletal function, balance and mobility generally by the 60s. These results provide health professionals with normal performance levels to use as therapeutic goals as well as identify musculoskeletal factors associated with reducing balance and mobility. Hence, these results inform clinicians and policy makers for the establishment of pre-emptive interventions to promote healthier ageing.     

Effects of an 8-week multimodal exercise program on strength, flexibility, and golf performance in 55- to 79-year-old men

Substantial research has indicated the beneficial effect of physical activity on physical fitness and activities of daily living in older adults, but none have investigated the effects on performance of recreational activities. This investigation studied the effect of an exercise program on fitness and golf-clubhead speed in older men. Thirty-one golfers (mean age 65.1 +/- 6.2 years) were randomly assigned to a treatment (n = 19) or control (n = 12) group. The treatment group completed an 8-week strength and flexibility program. Assessments included 10-RM muscle strength; selected range-of-motion (ROM) measurements; and golf-clubhead speed (CHS). ANCOVA revealed significant differences between groups (p <.005) for all strength measurements and several ROM measurements. CHS was significantly different (p <.05) between groups after the intervention. Mean CHS improved from 85.0 to 87.1 miles/hr (136.8 to 140.2 km/hr). These results indicate that a strength and flexibility program can improve golf performance in older adults.     

On social work and what gender has got to do with it

Living in gendered societies makes it necessary to take into account the specific ways in which social problems and social issues affect the lives of women and men, girls and boys. Not only are social problems and social issues very often gender biased; this is also true for the professions dealing with these problems and issues, and for the training programmes for professions like social work. Sociological analysis of society and philosophical understanding of a good life are permeated by gender-specific perceptions -- often without those involved being aware of them. Furthermore, social policies reinforce gender-specific biases because they are based on gender-specific (i.e. male) standards. Gender as an analytical category has been brought into scientific and public discourse by feminist theoreticians and activists making women -- and thus also men -- visible with regard to structure and subject issues. The development of gender theory and research highlights the significance of gender arrangements to understand social phenomena and to support gender-equality ways of thinking and policies. At the same time, men and women are not only confronted with gendered structures, but via socialization processes and personal development they also reproduce these gender differences in their daily lives by 'doing gender'.     

Hand force of men and women over 65 years of age as measured by maximum pinch and grip force

This cross-sectional study aimed to assess the impact of age and gender on 4 measures of grip and pinch force of well elderly community dwellers and to provide normative values. The hypotheses were that age and gender affect pinch and grip force and that these 2 factors might interact. Hand strength of 224 seniors 65-92 years old was tested. Grip and pinch force decreased in successively older age groups past 65 years. Men's grip force exceeded that of women in all age groups. Men's hand-force decline was steeper than that of women over successive age groups, suggesting that gender differences in force decreased with age. Trends were the same for all 4 types of grip- and pinch-force measurement but were most clearly visible in grip and key-pinch force. Norms were provided for seniors age 65-85+ years in 5-yr increments.     

Gender-Specificity of Women's and Men's Self-Reported Attention to Sexual Stimuli

Men's sexual arousal is largely dependent on the actor's gender in a sexual stimulus (gender-specific), whereas for women, particularly androphilic women, arousal is less dependent on gender (gender-nonspecific). According to information-processing models of sexual response, sexual arousal requires that attention be directed toward sexual cues. We evaluated whether men's and women's self-reported attention to sexual stimuli of men or women were consistent with genital responses and self-reported arousal. We presented gynephilic men (n = 21) and women (n = 22) and androphilic men (n = 16) and women (n = 33) with audiovisual stimuli depicting men or women engaged in sexual activities. Genital responses were continuously recorded and, following each stimulus, participants reported the amount of attention paid to the video and feelings of sexual arousal. Self-reported attention was gender-specific for men and gender-nonspecific for women, and generally mirrored genital responses and self-reported arousal. Gender-specificity of genital responses significantly predicted gender-specificity of self-reported arousal; however, for men only, this effect was significantly mediated by gender-specificity of self-reported attention. Gender differences in gender-specificity of sexual arousal may be partially accounted for by differences in gender-specificity of self-reported attention, although attention may play a greater role in men's sexual arousal than women's.     

An Exploratory Study of Factors Associated With Sexual Inhibition and Excitation: Findings From a Representative Survey in Flanders

The dual control model of sexual response was developed to account for individual differences in sexual excitation and inhibition. According to this model, the balance between excitation and inhibition is of crucial importance in determining an individual's sexual response to a stimulus. In this study, we aimed to contribute to the existing literature on sexual excitation and inhibition in two ways. First, we investigated the distribution of excitation and inhibition scores in a representative population sample. Second, we conducted an exploratory study of the factors associated with variation in excitation and inhibition. We used data from a representative survey on the sexual health of men and women in Flanders (N = 1,825; mean age = 43.77; SD = 17.98). The results indicated that excitation and inhibition had a near normal distribution among men and women. However, the scores for sexual inhibition due to threat of performance failure (SIS1) among men, and for sexual inhibition due to the threat of performance consequences (SIS2) among women, were somewhat skewed. Furthermore, age, gender, physical and mental health, education level, and attitudes toward sex were all to some extent associated with differences in inhibition, excitation, or both.     

Measuring the effectiveness of a multi-year multi-county marriage celebration: qualitative findings

In the early stages of the recent recession, men were disproportionately among the ranks of the unemployed. Current economic times provide a researchable moment, as more women are likely to be in positions of power vis-à-vis earnings. This article uses a unique nationally representative dataset of married individuals (n = 158) to examine expected level of support for relocation if the respondent's spouse were offered a hypothetical job opportunity. Although there do appear to be gender differences in the associations between background characteristics and expected level of support, we find no basis for our hypotheses about the nature of the relationships between race, class, and expected level of support. Black women have higher levels of expected support than do White women, whereas Black men have lower levels of expected support than do White men; there are no class differences in expected level of support. We interpret these findings in the context of the complicated performance of gender in challenging economic times.     

Fitness profiles and activity patterns of entering college students.

Fitness levels of American youth have shown a marked decline in the last decade, according to recent studies. To determine whether such a tendency persists for entering college students, the authors evaluated 115 male and 143 female students for performance on the following fitness-related variables: (1) maximal oxygen consumption (estimated from Astrand cycling protocol), (2) body composition (skin-fold techniques), (3) muscle endurance (sit-up protocol), (4) muscle strength (bench-press protocol), and (5) joint flexibility (upper and lower body protocols). Although neither men nor women exhibited high levels of cardiorespiratory fitness, the women in the study showed higher relative levels than their male counterparts. Both groups showed excellent levels of muscle strength (compared with normative standards), but they achieved only an average standard for muscle endurance. Findings of relatively low levels of cardiovascular fitness compared with levels of muscle strength, particularly in men, seem to be a reflection of an inappropriate concentration of physical activity.     

Adaptive changes in gait of older and younger adults as responses to challenges to dynamic balance

The study proposed to identify balance strategies used by younger and older adults during gait under proprioceptive, visual, and simultaneous proprioceptive-visual challenges. Participants ambulated under 4 conditions: consistent, noncompliant surface; inconsistent, compliant surface (C); consistent, noncompliant surface with vision obscured (NCVO); and inconsistent, compliant surface with vision obscured (CVO). Balance adaptations were measured as changes in gait velocity, cadence, and gait-stability ratio (GSR). Participants were 5 younger (mean age = 27.2) and 5 older (mean age = 68) healthy adults. Significant age differences were found for GSR (p = .03) on all surfaces. Older adults adopted a more stable gait pattern than younger adults regardless of the challenge presented by surface. Significant condition differences were found for velocity (p < .001) and cadence (p = .001). All participants exhibited significantly decreased velocity and increased cadence on surfaces C and CVO. Gait speed and cadence did not significantly change in NCVO. Younger and older adults exhibited similar adaptive balance strategies, slowing and increasing steps/s, under proprioceptive and proprioceptive-visual challenges to dynamic balance.     

The gender citation gap: Why and how it matters

The weight of evidence suggests that articles written by men and women receive citations at comparable rates. This suggests that research quality or gender-based bias in research evaluation and citing behaviors may not be the reason why academic women accumulate fewer citations than men at the career level. In this article, I outline a career perspective that highlights women's disadvantages in career progression as the root causes for the gender citation gap. I also consider how the gender citation gap may perpetuate the unequal pay between genders in science. My analysis of two different datasets, one including paper and citation information for over 130,000 highly cited scholars during the 1996–2020 period and another including citation and salary information for nearly 2,000 Canadian scholars over the 2014–2019 period, shows several important findings. First, papers written by women on average receive more citations than those written by men. Second, the gender citation gap grows larger with time as men and women progress in their careers, but the opposite pattern holds when research productivity and collaborative networks are considered. Third, higher citations lead to higher pay, and gender differences in citations explain a significant share of the gender wage gap. Findings demonstrate the critical need for more attention toward gender differences in career progression when investigating the causes and solutions for gender disparities in science.     

Entry Into Parenthood and the Outcome of Cohabiting Partnerships in Britain

Data from a national cohort study of men and women born in Britain in 1958 are used to examine factors influencing the outcome of cohabiting first partnerships. Conception is found to be a key factor promoting marriage for both men and women. Observed gender differences in the estimated impact of children on partnership stability are likely due to the incomplete reporting of past fertility among men. Social class and educational differentials in the likelihood of female cohabitors experiencing a conception, and their likelihood of subsequent marriage, suggest that the role of cohabitation varies according to socioeconomic background.     

Study of the association between gait variability and physical activity

Background

Gait variability can be considered an indirect measure of gait stability, in particular regarding temporal or spatial variability assessment. Physical activity, such as walking, is advised for the elderly and can be improved by gait stability. The aim of this study was to investigate the associations between gait stability and physical activity in women of different age ranges.

Methods

Forty-two healthy women of different age ranges (18-40 yrs. and 65-75 yrs.) were recruited in the study. To assess physical activity, the subjects wore a multi-sensor activity monitor for a whole week, inferring the time spent in moderate to vigorous physical activity (MVPA). MVPA were analysed in bouts of at least 10 subsequent minutes (MVPA_bouts) and in overall minutes (MVPA_tot). A kinematic analysis was performed with an optoelectronic system to calculate gait variability - expressed as standard deviation (SD) and coefficient of variability (CV) of step width, stride length, stance and swing time (during treadmill walking at different speeds).

Results

Elderly women, with high walking speed (5 km/h), and moderate step width variability (CV = 8–27%), met the recommended levels of physical activity (MVPA_tot and MVPA_bouts). Furthermore, gait variability, adjusted for age and number of falls, was significantly and negatively associated with MVPA_tot only at 3.5 km/h, and with MVPA_bouts only at 4 km/h.

Conclusions

In a population of healthy elderly women, gait variability was significantly and negatively associated with the level of physical activity. Healthy elderly women, with moderate gait variability (step width variability), and high preferred walking speed, seem to be able to meet the recommended levels of physical activity.

     

Fitness Profiles and Activity Patterns of Entering College Students

Abstract

Fitness levels of American youth have shown a marked decline in the last decade, according to recent studies. To determine whether such a tendency persists for entering college students, the authors evaluated 115 male and 143 female students for performance on the following fitness-related variables: (1) maximal oxygen consumption (estimated from Astrand cycling protocol), (2) body composition (skin-fold techniques), (3) muscle endurance (sit-up protocol), (4) muscle strength (bench-press protocol), and (5) joint flexibility (upper and lower body protocols).

Although neither men nor women exhibited high levels of cardiorespiratory fitness, the women in the study showed higher relative levels than their male counterparts. Both groups showed excellent levels of muscle strength (compared with normative standards), but they achieved only an average standard for muscle endurance. Findings of relatively low levels of cardiovascular fitness compared with levels of muscle strength, particularly in men, seem to be a reflection of an inappropriate concentration of physical activity.     

Gender differences in determinants of temporary labor migration in China: a multilevel analysis

Data from a 1998 migration survey in Hubei province are used to examine gender differences in the determinants of temporary labor migration from a multi-level perspective. The authors find that community level factors play a key role in temporary labor migration; models omitting community level variables are poor in predicting temporary labor migration. Significant gender differences exist in determinants of temporary labor migration. For men, temporary labor migration is mainly a response to community level factors; individual or household characteristics have little predictive power. For women, by contrast, temporary labor migration is predominantly determined by individual characteristics; community level factors are not as important.     

Replication: Do women shy away from competition? Experimental evidence from China

We investigate gender differences in competitiveness using a lab-in-the-field experiment and a subject pool consisting of Chinese adults following the design by Niederle and Vesterlund (2007). China provides an interesting environment to study since the country has promoted gender equality for a long time and the gender gap in earnings is small in cross-country comparisons. However, in many respects, China is still a patriarchal society. Our results show that women perform equally well as men in a piece-rate task and significantly better in a competitive payment environment. Despite this, men are more than twice as likely to choose a competitive environment. This gender difference cannot be explained by differences in confidence or risk preferences.     

‘Live to Work’ or ‘Work to Live’? A Qualitative Study of Gender and Work–life Balance among Men and Women in Mid‐life

Many contemporary studies of ‘work–life balance’ either ignore gender or take it for granted. We conducted semi‐structured interviews with men and women in mid‐life (aged 50 to 52 years) in order to compare their experiences of work–life balance. Our data suggest that gender remains embedded in the ways that respondents negotiate home and work life. The women discussed their current problems juggling a variety of roles (despite having no young children at home), while men confined their discussion of such conflicts to the past, when their children were young. However, diversity among men (some of whom ‘worked to live’ while others ‘lived to work’) and women (some of whom constructed themselves in relation to their families, while others positioned themselves as ‘independent women’) was apparent, as were some commonalities between men and women (both men and women constructed themselves as ‘pragmatic workers’). We suggest ways in which gender‐neutral theories of work–life balance may be extended.     

From childhood to young adulthood: the importance of self-esteem during childhood for occupational achievements among young men and women

This study investigates the impact of self-esteem during childhood on men’s and women’s occupational prestige in young adulthood. By combining first-hand information from parents in the Swedish Level-of-Living surveys (LNU) 2000 and their children in the Child-LNU in 2000 and the follow-up study in LNU-2010, we are able to assess how self-esteem during adolescence is related to occupational prestige in adulthood. Multivariate analyses were used to determine whether associations between self-esteem (global and domain-specific) in childhood (aged 10–18 years) and occupational prestige in young adulthood (aged 20–28) exist and, if so, what the magnitudes of these associations are for each respective gender.

For women, there is a positive association between confidence in mathematics and prestige, even when accounting for actual math grades. Global self-esteem is positively related to later occupational prestige as well. For men, self-esteem is unrelated to occupational prestige. Only actual performance in mathematics is important for men’s occupational achievements.

These results indicate the importance of taking gender differences into account when investigating how self-esteem is related to outcomes in young adulthood. A possible implication is the importance of focusing on the development of self-esteem among children, particularly girls, in school.