The effect of exercise on cognitive performance in an older population was studied. Thirty sedentary men and women 65–72 years of age were randomly assigned to a walking group, a weight training group, or a placebo control group. Intervention groups exercised 30–60 min 5 days per week for 16 weeks, with the walking group training at 60% heart rate reserve, the weight training group employing the DAPRE method of weight progression, and the placebo control group engaging in mild range-of-motion and flexibility movements that kept their heart rates close to resting levels. At baseline and 16 weeks posttraining each subject completed the Ross Information Processing Assessment (RIPA), a maximal graded treadmill test, and a strength assessment of the knee extensors and elbow flexors. Sixteen weeks of walking improved VO2peak of the sedentary subjects 15.8%; VO2peak did not improve in the other two groups. Additionally, the RIPA scores of the walking group increased 7.5%, while those of the weight-training and control groups showed little change.
Jamie L. Moul, Bert Goldman and Beverly Warren
Fátima Ramalho, Filomena Carnide, Rita Santos-Rocha, Helô-Isa André, Vera Moniz-Pereira, Maria L. Machado and António P. Veloso
Functional fitness (FF) and gait ability in older populations have been associated with increased survival rates, fall prevention, and quality of life. One possible intervention for the improvement of FF is well-structured exercise programs. However, there are inconsistent findings regarding the effects of exercise interventions in the maintenance of gait parameters. The aim of this protocol is to develop a community-based exercise intervention targeting an older population. The intervention aim is the improvement of gait parameters and FF. A control trial with follow-up will be performed. The primary outcome variables will be plantar pressure gait parameters. The secondary outcome variables will be aerobic endurance, lower limb strength, agility, and balance. These variables will be recorded at baseline and after 12, 24, and 36 weeks, in the intervention and control groups. If effective, this protocol can be used by exercise professionals in improving community exercise programs.
Sven Rees, Aron Murphy and Mark Watsford
This study was designed to investigate the effects of vibration on muscle performance and mobility in a healthy, untrained, older population. Forty-three participants (23 men, 20 women, 66–85 y old) performed tests of sit-to-stand (STS), 5- and 10-m fast walk, timed up-and-go test, stair mobility, and strength. Participants were randomly assigned to a vibration group, an exercise-without-vibration group, or a control group. Training consisted of 3 sessions/wk for 2 mo. After training, the vibration and exercise groups showed improved STS (12.4%, 10.2%), 5-m fast walk (3.0%, 3.7%), and knee-extension strength (8.1%, 7.2%) compared with the control (p < 0.05). Even though vibration training improved lower limb strength, it did not appear to have a facilitatory effect on functional-performance tasks compared with the exercise-without-vibration group. Comparable mobility and performance changes between the experimental groups suggest that improvements are linked with greater knee-extension strength and largely attributed to the unloaded squats performed by both exercise groups.
Yusuke Osawa, Yasumichi Arai, Yuko Oguma, Takumi Hirata, Yukiko Abe, Koichiro Azuma, Michiyo Takayama and Nobuyoshi Hirose
This study investigated the relationships between muscle echo intensity (EI), physical activity (PA), and functional mobility in 108 Japanese (88–92 years). We measured EI and muscle thickness (MT) at the midpoint of the anterior superior iliac spine and patella using B-mode ultrasound. Light and moderate-to-vigorous PA (LPA and MVPA) were assessed with a triaxial accelerometer. The timed up and go (TUG) test was used to measure for functional mobility. EI, but not MT, was significantly associated with both TUG scores (β = 0.17, p = .047) and MVPA (β = –0.31, p = .01) when adjusted by potential confounders. However, association between EI and TUG disappeared after adjusted for MVPA. Meanwhile, MVPA was significantly associated with TUG scores independent of EI (β = –0.35, p < .001). Although EI of anterior thigh muscles might be a weaker predictor of functional morbidity than MVPA, it is a noninvasive and practical approach for assessing muscle quality in the very old.
Michael B. Edwards and George Cunningham
Racial health disparities are more pronounced among older adults. Few studies have examined how racism influences health behaviors. This study’s purpose was to examine how opportunities for physical activity (PA) and community racism are associated with older racial minorities’ reported engagement in PA. We also investigated how PA levels influenced health.
We analyzed survey data obtained from a health assessment conducted in 3360 households in Texas, USA, which included items pertaining to PA, community characteristics, and health.
Our sample contained 195 women and 85 men (mean age 70.16), most of whom were African American. We found no direct relationship between opportunities and PA. Results suggested that perceived community racism moderated this association. When community racism was low, respondents found ways to be active whether they perceived opportunities or not. When community racism was high, perceived lack of opportunities significantly impeded PA engagement. We found the expected association between PA and health.
Results suggested that negative effects of community racism were counteracted through increased opportunities for PA.
Liane S. Lewis, James Hernon, Allan Clark and John M. Saxton
the validity of the IPAQ-L against accelerometry in older populations and small to moderate correlation coefficients were reported ( Cerin et al., 2012 ; Van Holle, De Bourdeaudhuij, Deforche, Van Cauwenberg, & Van Dyck, 2015 ). However, both of these studies compared the IPAQ-L (which measures PA
Ellen Freiberger, Elisabeth Rydwik, Astrid Chorus, Erwin Tak, Christophe Delecluse, Federico Schena, Nina Waaler, Bob Laventure and Nico van Meeteren
). These processes are accelerated—either in a positive or negative manner—by major life events or stressors such as divorce, bereavement, trauma (e.g., falls), and hospital admissions ( Hulzebos & van Meeteren, 2016 ; McEwen, 2012 ). Therefore, the heterogeneity in the older population will require
Chih-Hsiang Yang and David E. Conroy
approved by the institutional review board. Mindful Walking Intervention The mindful walking program was designed to incorporate basic elements of mindfulness practice or walking meditation in a way that would be accessible for the general older population without extensive experience in meditation or
Guy El Hajj Boutros, José A. Morais and Antony D. Karelis
, van den Akker, & Buntinx, 2016 ). There is even evidence to suggest that muscle strength seems to be more important than muscle mass for the risk of mortality in older adults ( Newman et al., 2006 ) and for better predicting physical function in an older population ( Bouchard, Heroux, & Janssen, 2011
David Cruz-Díaz, Kyung-Min Kim, Fidel Hita-Contreras, Marco Bergamin, Agustin Aibar-Almazán and Antonio Martínez-Amat
the research community about the effectiveness of Tai Chi in the improvement of balance and postural control in older populations. 15 The most popular style of Tai Chi is known as Yang, which is based on 108 forms (specific Tai Chi movements) which include a wide range of movements that involve