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Clara Suemi da Costa Rosa, Danilo Yuzo Nishimoto, Ismael Forte Freitas Júnior, Emmanuel Gomes Ciolac and Henrique Luiz Monteiro

Background:

Patients on hemodialysis (HD) report lower physical activity (PA) levels. We analyzed factors associated with low levels of PA in patients with chronic kidney disease (CKD) and compared PA on HD day and non-HD.

Methods:

79 patients wore an accelerometer and were classified according to time spent on moderate-to-vigorous PA (MVPA). Demographic data, BMI, comorbidities, clinical status, and health-related quality of life (HRQoL) were checked for association with PA. In addition, PA level was compared between days of HD and non-HD.

Results:

Accelerometer compliance was 78.5% [33 men and 29 women (53.96 ± 15.71 yrs) were included in analysis]. 35.5% of sample achieved ≥150min/week on MVPA. Lower MVPA was associated with older age (OR = 5.80, 95% CI = 1.11 to 30.19, P = .04), and lower score of physical function HRQoL (OR = 4.33, 95% CI = 1.23 to 15.23, P = .02). In addition, patients spent 9.73% more time on sedentary behavior, 38.9% less on light PA and 74.9% less on MVPA on HD day versus non-HD day.

Conclusion:

Age and physical function HRQoL were the main factors associated to lower PA levels. In addition, lower time spent on PA during HD day suggest that strategies for increasing physical activity levels during HD day such exercising during HD session could help CKD patients to reach current PA recommendations.

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Jitka Jancova-Vseteckova, Martin Bobak, Ruzena Kubinova, Nada Capkova, Anne Peasey, Michael G. Marmot and Hynek Pikhart

Background:

The aim was to examine the association of objective measures of physical functioning (PF) with education and material circumstances and the decline in PF with age by socioeconomic position (SEP).

Methods:

In 3,205 subjects (60–75 years) from the Czech Republic, we assessed relationship between PF, SEP, and age. Linear regression was used to assess PF measures and SEP measures.

Results:

Cross-sectional decline in PF by age was similar in all individuals. Differences between SEP groups were similar across age groups, except for the difference in walk speed by material circumstances in men—bigger at older ages (p = .004). Men and women with the highest education were about 2 s faster at the chair rise test than those with the lowest education.

Discussion:

Findings suggest strong educational gradient in PF, an inconsistent role of self-assessed material circumstances, and virtually no interaction of SEP with the cross-sectional decline in PF by age.

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Carrie S. Baker, Jennifer M. Medina McKeon and Ellen L. Usher

Self-efficacy of balance, a psychological characteristic, may provide information regarding psychological risk factors for lower-extremity injury. Validated instruments to assess self-efficacy of balance do not currently exist. The objective of this study was to determine the face and content validity of the Self-Efficacy of Balance Scale (SEBS) for an adolescent population, as well as content validity, construct and convergent validity of the overall instrument. A series of panelists (n = 11) assessed proposed items for face and content validity for self-efficacy of balance. Construct and convergent validity were assessed with active college individuals (n = 74) and female high school basketball athletes (n = 57). Original items were revised to 21 items. Panelists validated both face and content validity of the SEBS. All items were assessed to have the construct of self-efficacy. Evidence of convergent validity supported the proposed construct of self-efficacy, and was found to be relevant to the physical functioning of a young, active population.

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Jack M. Guralnik, Suzanne Leveille, Stefano Volpato, Marcia S. Marx and Jiska Cohen-Mansfield

Epidemiological studies have demonstrated that, using objective performance measures of physical functioning, disability risk can be predicted in nondisabled older adults. This makes it possible to recruit a nondisabled but at-risk population for clinical trials of disability prevention. Successful disability prevention in this population, for example through an exercise program, would have a major public health impact. To enhance the development of exercise interventions in this group it would be valuable to have additional information not available from existing epidemiologic studies. This report examines the evidence that functional limitations preceding disability can be identified in a community-dwelling population and that it is feasible to recruit these people into studies. It introduces a series of articles examining the characteristics of this population: motivators and barriers to exercise, exercise habits and preferences, the impact of positive and negative affect, and the impact of pain and functional limitations on attitudes toward exercise.

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Jennifer J. Heisz and Ana Kovacevic

Age-related changes in the brain can compromise cognitive function. However, in some cases, the brain is able to functionally reorganize to compensate for some of this loss. The present paper reviews the benefits of exercise on executive functions in older adults and discusses a potential mechanism through which exercise may change the way the brain processes information for better cognitive outcomes. Specifically, older adults who are more physically active demonstrate a shift toward local neural processing that is associated with better executive functions. We discuss the use of neural complexity as a sensitive measure of the neural network plasticity that is enhanced through exercise. We conclude by highlighting the future work needed to improve exercise prescriptions that help older adults maintain their cognitive and physical functions for longer into their lifespan.

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Christopher A. Shields, David M. Paskevich and Lawrence R. Brawley

This article presents three studies representing the development stages of a theoretically driven measure employed to assess the frequency of use of the self-presentational strategy of self-handicapping in exercise contexts (Self-Handicapping Exercise Questionnaire: SHEQ). First a pilot study was conducted to examine the nature of the phenomenology of self-handicaps reported in exercise settings. Study 2 involved item creation, item trimming, and model confirmation. Study 3 concerned factorial validation, cross-validating the self-handicapping measure created in the second study. The outcome was a 20-item measure assessing self-handicapping claims in exercise. The results of both model-testing studies indicated three unique and stable factors addressing self-handicapping claims about making exercise a routine, training in an exercise facility, and healthy physical functioning. Self-handicapping responses were not moderated by gender, age, or exercise setting. Further use and development of the SHEQ is discussed.

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Joanna S. Kostka, Jan W. Czernicki and Tomasz J. Kostka

We assessed the relative association of quadriceps muscle strength and power as well as optimal shortening velocity (υopt) to physical functioning in 28 women aged 50–87 years with chronic osteoarthritis participating in a three-week multimodal exercise program. Quadriceps muscle strength, power, υopt, and functional performance using the Activities of Daily Living (ADL) scale, Timed Up & Go (TUG) test, Tinetti test, and 6-Minute Walking Test (6-MWT) were assessed pre- and postrehabilitation. With rehabilitation, patients improved the values of strength, power, and the results of all functional tests. Both at baseline and postrehabilitation, functional status was more strongly related to power and υopt than to strength. Functional gains obtained with rehabilitation were not related to changes in power or υopt, and only very modestly related to changes in strength. Future studies should assess the benefits and feasibility of power- and velocity-oriented training in patients with osteoarthritis.

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Guillaume Lamotte, Elizabeth Skender, Miriam R. Rafferty, Fabian J. David, Steve Sadowsky and Daniel M. Corcos

Objective:

This paper reviews the therapeutically beneficial effects of progressive resistance exercise training (PRET) on motor and nonmotor symptoms in Parkinson's disease (PD).

Methods:

First, we perform a systematic review of the literature on the effects of PRET on motor signs of PD, functional outcomes, quality of life, and patient perceived improvement, strength, and cognition in PD. Second, we perform a meta-analysis on the motor section of the UPDRS. Finally, we discuss the results of our review and we identify current knowledge gaps regarding PRET in PD.

Conclusion:

This systematic review synthesizes evidence that PRET can improve strength and motor signs of Parkinsonism in PD and may also be beneficial for physical function in individuals with PD. Further research is needed to explore the effects of PRET on nonmotor symptoms such as depression, cognitive impairment, autonomic nervous system dysfunction, and quality of life in individuals with PD.

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Silvia Aranda-García, Albert Iricibar, Antoni Planas, Joan A. Prat-Subirana and Rosa M. Angulo-Barroso

This study evaluates the separate effect and retention of 12-week traditional (TE) and horse (HE) exercise programs on physical function in healthy older participants (61 to 87 years old). Thirty-eight participants were randomly assigned to three groups: TE (n = 17), HE (n = 10), and control group (n = 11). TE and HE underwent a supervised exercise program (3 day/week). Maximal gait speed, muscle strength, and body balance were assessed at weeks 0, 12, and 16. Only TE and HE displayed significant improvements (P < .05) in knee extensor strength, and only HE had faster gait speed. Marginal balance improvements were found only in HE in the medial-lateral direction. However, TE showed larger improvements in handgrip than HE. The largest retention was in knee extensor strength but most of the exercise effects were lost in the follow-up. Besides TE, exercise with a horse may be an alternative option to older adults, provided that they want to interact with the animal.

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Kathleen Benjamin, Nancy C. Edwards and Virendra K. Bharti

For seniors, an inactive lifestyle can result in declines in mental and physical functioning, loss of independence, and poorer quality of life. This cross-sectional descriptive study examined theory-of-planned-behavior, health-status, and sociodemographic predictors on exercise intention and behavior among 109 older and physically frail adults. Significant predictors of being a high versus a low active were a strong intention to continue exercising, positive indirect attitudes about exercise, and having been advised by a doctor to exercise. Findings indicate that a strong intention to continue exercising differentiates between those who report low levels and those who report high levels of physical activity. The results also highlight the salience of physician’s advice for seniors to exercise.