The purpose of this study was to evaluate the differences in body composition, neuromuscular performance, and mobility in healthy, regularly exercising and inactive older women, and examine the relationship between skeletal muscle indices and mobility. Overall, 32 healthy older women participated. They were divided into groups according to their physical activity history as regularly exercising (n = 22) and inactive (n = 10) women. Body composition, hand grip strength, leg extensor muscle strength, rapid force development, power output, and mobility indices were assessed. Regularly exercising women had lower fat mass and higher values for leg extensor muscle strength and muscle quality, and also for mobility. Leg extensor muscle strength and power output during vertical jumping and appendicular lean mass per unit of body mass were associated with mobility in healthy older women. It was concluded that long-term regular exercising may have beneficial effects on body composition and physical function in older women.
Anni Rava, Anu Pihlak, Jaan Ereline, Helena Gapeyeva, Tatjana Kums, Priit Purge, Jaak Jürimäe and Mati Pääsuke
Ray M. Merrill
matter (PM) 2.5 air pollution was associated with an increase in leisure-time physical inactivity (LTPI). 16 A nationally representative cross-sectional survey conducted in the United States found that increased PM2.5 was associated with lower physical activity. 17 All studies in a systematic review
Rebekah Steele, W. Kerry Mummery and Trudy Dwyer
A growing number of the population are using the Internet for health information, such as physical activity (PA). The aim of this study was to examine the effectiveness of delivery modes for a behavior change program targeting PA.
A randomized trial was conducted with 192 subjects randomly allocated to either a face-to-face, Internet-mediated, or Internet-only arm of a 12-wk intervention. Subjects included inactive adults with Internet access. The primary outcome variable was self-reported PA, assessed at four time points.
The results showed no group × time interaction for PA F(6, 567) = 1.64, p > 0.05, and no main effect for group F(2, 189) = 1.58, p > 0.05. However, a main effect for time F(3, 567) = 75.7, p < 0.01 was observed for each group. All groups were statistically equivalent immediately post-intervention (p < 0.05), but not at the follow-up time points (p > 0.05). The Internet-mediated and Internet-only groups showed similar increases in PA to the face-to-face group immediately post-intervention.
This study provides evidence in support of the Internet in the delivery of PA interventions and highlights avenues for future research.
Linn Bøhler, Sílvia Ribeiro Coutinho, Jens F. Rehfeld, Linda Morgan and Catia Martins
previous EI (better energy compensation) seen in active versus inactive individuals remain unknown, differences in postprandial satiety signaling may play a role. However, potential differences in the postprandial release of appetite-related hormones between active and inactive individuals have never been
Peter T. Katzmarzyk
Although the prevalence of physical inactivity is high in Canada, few studies have assessed its public health impact.
A cause-deleted methodology was employed to estimate the effects of physical inactivity on life expectancy. Life expectancy in 2002 was estimated from an abridged life table analysis, which was repeated after removing deaths from physical inactivity. Deaths from physical inactivity were estimated from published population-attributable fractions for coronary artery disease, stroke, hypertension, colon cancer, breast cancer, and type 2 diabetes.
Life expectancy was 79.7 y in the total population, 77.2 y in males, and 82.1 y in females. Compared to overall life expectancy, physical inactivity cause-deleted values were 0.86 y lower in the total population, 0.65 y lower in males, and 1.0 y lower in females.
Life expectancy could be increased by over 10 months if Canadians could be encouraged to be physically active.
Sunday Azagba and Mesbah Fathy Sharaf
In spite of the substantial benefits of physical activity for healthy aging, older adults are considered the most physically inactive segment of the Canadian population. This paper examines leisure-time physical inactivity (LTPA) and its correlates among older Canadian adults.
We use data from the Canadian Community Health Survey with 45,265 individuals aged 50–79 years. A logistic regression is estimated and separate regressions are performed for males and females.
About 50% of older Canadian adults are physically inactive. Higher odds of physical inactivity are found among current smokers (OR = 1.52, CI = 1.37–1.69), those who binge-drink (OR = 1.24, CI = 1.11–1.39), visible minorities (OR = 1.60, CI = 1.39–1.85), immigrants (OR = 1.13, CI = 1.02–1.25), individuals with high perceived life stress (OR = 1.48, CI = 1.31–1.66). We also find lower odds of physical inactivity among: males (OR = 0.89, CI = 0.83 to 0.96), those with strong social interaction (OR = 0.71, CI = 0.66–0.77), with general life satisfaction (OR = 0.66, CI = 0.58–0.76) and individuals with more education. Similar results are obtained from separate regressions for males and females.
Identifying the correlates of LTPA among older adults can inform useful intervention measures.
Bradley J. Cardinal
The purpose of this study was to examine the relationship between inactive older adults’ physical activity readiness (based on the Physical Activity Readiness Questionnaire [PARQ]) and several biometric, demographic, and physical activity indices. Participants were 181 (91 female, 90 male) inactive 60- to 89-year-old adults (M age = 70.2 ± 6.6 yr.). Self-report measures were completed and body mass index (BMI) and VO2max were estimated. BMI, weight, and VO2max were significantly associated with physical activity readiness. There was no significant association among 10-year age cohort and physical activity readiness. The blood pressure question excluded the largest number of participants (42%). Overall, 45.3% of the participants appeared to be healthy enough to begin a low to moderate physical activity program. Preliminary evidence suggests the PARQ may be a useful method of identifying older adults for whom low to moderate physical activity participation is safe.
Marie H. Murphy, Angela Carlin, Catherine Woods, Alan Nevill, Ciaran MacDonncha, Kyle Ferguson and Niamh Murphy
one-third (31.1%) of adults are physically inactive. 7 The transition from adolescence to adulthood, 8 and in particular the transition to college/university provides an opportunity for influencing adult behavior. 9 Young adults are exposed to a number of academic, physical, emotional, and social
Alex V. Rowlands
2016 has been an exciting year for research in physical activity, inactivity and health. Recognition of the importance of all physical behaviors (physical activity, sedentary time and sleep) across the 24-hr day continues to grow. Notable advances have included: applications of recent methodological innovations that account for the codependence of the behaviors in the finite 24-hr period showing that the balance of these behaviors is associated with health; methodological innovations focusing on the classification of behaviors and/or quantification of the 24-hr diurnal activity pattern; and a series of systematic reviews that helped provide the evidence base for the release of the innovative 24-hr movement guidelines earlier this year. This commentary focuses on just two of these papers: the first by Goldsmith and colleagues who demonstrate a new statistical method that exploits the time series nature of accelerometer data facilitating new insights into time-specific determinants of children’s activity patterns and associations with health; the second by Tremblay and colleagues who describe the evidence base for associations between each physical behavior and children’s health, the emerging evidence base for associations between the balance of behaviors and health, and development of the world’s first 24-hr movement guidelines.
Bruna Camilo Turi, Jamile S. Codogno, Romulo A. Fernandes, Xuemei Sui, Carl J. Lavie, Steven N. Blair and Henrique Luiz Monteiro
Hypertension is one of the most common noncommunicable diseases worldwide, and physical inactivity is a risk factor predisposing to its occurrence and complications. However, it is still unclear the association between physical inactivity domains and hypertension, especially in public healthcare systems. Thus, this study aimed to investigate the association between physical inactivity aggregation in different domains and prevalence of hypertension among users of Brazilian public health system.
963 participants composed the sample. Subjects were divided into quartiles groups according to 3 different domains of physical activity (occupational; physical exercises; and leisure-time and transportation). Hypertension was based on physician diagnosis.
Physical inactivity in occupational domain was significantly associated with higher prevalence of hypertension (OR = 1.52 [1.05 to 2.21]). The same pattern occurred for physical inactivity in leisure-time (OR = 1.63 [1.11 to 2.39]) and aggregation of physical inactivity in 3 domains (OR = 2.46 [1.14 to 5.32]). However, the multivariate-adjusted model showed significant association between hypertension and physical inactivity in 3 domains (OR = 2.57 [1.14 to 5.79]).
The results suggest an unequal prevalence of hypertension according to physical inactivity across different domains and increasing the promotion of physical activity in the healthcare system is needed.