Exercise, Physical Function and Health Perceptions of Older People

The role of cardiorespiratory fitness on quality of life in midlife women

OBJECTIVE

We aimed to characterize the relationship between cardiorespiratory fitness and quality of life in a sample of healthy midlife women aged 40 to 65 years.

METHODS

Cardiorespiratory fitness was measured with a VO2max test. Quality of life was assessed with the menopause-specific Utian Quality of Life scale (UQOL). The UQOL measures overall quality of life, which comprises health, emotional, occupational, and sexual domains. Simple and multiple linear regression models were built to analyze relationships between cardiorespiratory fitness and overall quality of life as well as the separate UQOL domains.

RESULTS

Forty-nine women with an average age of 52.5 years were included in the analysis. In simple linear models, cardiorespiratory fitness was related to overall (R2 = 0.34, P < 0.001), health (R2 = 0.55, P < 0.001), emotional (R2 = 0.08, P = 0.05), and occupational (R2 = 0.09, P = 0.03) quality of life. In multiple regression models, cardiorespiratory fitness was associated with overall (P < 0.01) and health (P < 0.001) quality of life, after controlling for physical activity, age, body mass index, and time sedentary.

CONCLUSIONS

Higher cardiorespiratory fitness is associated with better quality of life during midlife, particularly in the health domain. Increasing cardiorespiratory fitness may be a useful means to promote quality of life in this population.

Do psychosocial factors moderate the association between objective neighborhood walkability and older adults' physical activity?

This study investigated moderating effects of psychosocial factors on the association between walkability and physical activity (PA) in 433 Belgian older adults. Furthermore, main effects of psychosocial factors on PA were determined. No moderating effects were observed for the associations between walkability and transport walking, or moderate-to-vigorous PA (MVPA). Walkability was positively associated with recreational walking in those with high self-efficacy. Regarding main effects, benefits and social norm were positively associated with recreational walking. Benefits were positively and barriers were negatively associated with MVPA. There were no significant main effects for transport walking. The overall lack of moderation suggests that environmental interventions might enhance all older adults' transport walking and MVPA. Recreational walking might be enhanced by simultaneously targeting self-efficacy and neighborhood environmental factors.

Associations between objectively assessed physical activity levels and fitness and self-reported health-related quality of life in community-dwelling older adults

BACKGROUND

Previous studies investigated the associations between health-related quality of life (HRQoL) and self-reported physical activity (PA) and/or self-reported physical fitness which are not the most reliable methods to assess PA and fitness. Therefore, this study aimed to examine the associations between HRQoL and each of objectively assessed habitual PA and physical fitness.

METHODS

Eighty-five community-dwelling older adults (60-83 years) completed assessments for PA (counts/min and steps/day using accelerometers), physical fitness (six-minute walk test [6MWT] and hand-grip strength), and self-reported HRQoL (using the eight subscales of the SF-36). In adjusted logistic regression models, the upper quartile was compared against the lower three quartiles of scores on each HRQoL subscale. Results report the odds ratios that were significant in the adjusted models at P < 0.05.

RESULTS

Individuals with higher PA levels assessed by counts/min were more likely to score higher on physical functioning (PF) subscale (OR = 1.90). Individuals with superior 6MWT performance were more likely to score higher on PF (OR = 1.87), role limitations due to physical problems (RP) (OR = 1.95), and vitality (VT) (OR = 1.79). Individuals with superior hand-grip strength were more likely to score higher on RP (OR = 2.37) and VT (OR = 1.83).

CONCLUSIONS

Objectively assessed PA and physical fitness measures were positively associated with physical health HRQoL subscales as reported by community-dwelling older adults.

Physical activity and older adults: a review of health benefits and the effectiveness of interventions

The purpose of this multidisciplinary review paper is to critically review evidence from descriptive, efficacy and effectiveness studies concerned with physical activity and older people. Both levels of fitness (aerobic power, strength, flexibility and functional capability) and measures of physical activity involvement decline with age, and the extent to which this is due to a biological ageing processes or disuse (physical inactivity) is critically examined. The review will consider the evidence for a causal relationship between sedentary behaviour/physical activity programmes and cardiovascular, musculoskeletal and psycho-social health, independent living and health-related quality of life into old age. The review also considers the effectiveness of different physical activity interventions for older people and issues relating to cost-effectiveness. The implications for future policy in terms of research, health care services, and education and training are briefly discussed.

The effects of aging on muscle strength and functional ability of healthy Saudi Arabian males

BACKGROUND

Loss of muscle strength as a result of normal aging is reported to impair functional ability in various communities. The purpose of this study was to determine the age at which loss of muscle strength and functional ability begins, and to establish a preliminary baseline for the pattern of changes in muscle strength and functional ability of aging in adult healthy Saudi Arabian males.

SUBJECTS AND METHODS

A sample of 160 healthy Saudi Arabian males aged 20-89 years participated in this study. The subjects were divided into seven age groups, each representing a decade. Maximum isometric A centAAmakeA centAA strength of bilateral quadriceps muscles were measured using a hand-held dynamometer. Functional ability tests that included stair walking, timed-up-and-go and balance tests were also performed and timed using a digital stopwatch.

RESULTS

Muscle strength and functional ability remained unchanged in the 20- and 30-year-old age groups. Around the age of 40, muscle strength and functional ability began to gradually decline. Muscle strength of males in their twenties was 380+/-62N and 330+/-60N in the right (RT) and left (LT) quadriceps, respectively. A decline with aging is represented by 190+/-40N and 110+/-30N in the RT and LT quadriceps muscles, respectively, by the eighth decade of life. Stair-walking, timed up-and-go and balance tests in the second decade were 4+/-1 sec, 8+/-2 sec and 130+/-20 sec, respectively, against 15+/-4 sec, 26+/-7 sec and 15+/-5 sec in the eighth decade. One-way ANOVA test showed that muscle strength and functional ability differed (P<0.01) among decades, except between the second and third decades (P<0.31). Age, muscle strength and functional ability displayed a significant relationship (P<0.001).

CONCLUSION

Loss of muscle strength and functional ability seem to begin in the fourth decade of life. The changes in muscle strength and functional ability have a significant relationship to aging. Clinically, these results may provide clinicians with a guide to the strength level of normal quadriceps and the functional ability of adult healthy Saudi Arabian males in relation to the normal aging process.