• ActivPAL
• PASE
• community-dwelling
• minor neurocognitive disorder

• Humans
• Sedentary Behavior
• Cognitive Dysfunction/physiopathology
• Cognitive Dysfunction/diagnosis
• Cross-Sectional Studies
• Male
• Female
• Aged
• Accelerometry/instrumentation
• Middle Aged
• Exercise
• Thigh
• Independent Living

• Humans
• Osteoarthritis, Knee/psychology
• Osteoarthritis, Knee/physiopathology
• Male
• Female
• Middle Aged
• Aged
• Depression/psychology
• Walking Speed
• Time Factors
• Functional Status
• Knee Joint/physiopathology
• Knee Joint/diagnostic imaging
• Disease Progression

• R01 MH115487 NIMH NIH HHS
• IK6 RX003977 RRD VA
• N01-AR-22259 NIH HHS
• N01-AR2-2258 NIH HHS
• N01-AR-22261 NIH HHS
• P30 AG028747 NIA NIH HHS
• T32 AG000262 NIA NIH HHS
• K01 AG064041 NIA NIH HHS
• R01 AG079854 NIA NIH HHS
• N01-AR-22262 NIH HHS
• R01 AG048069 NIA NIH HHS
• RF1 NS128360 NINDS NIH HHS
• N01-AR-22260 NIH HHS
• R03 AG070178 NIA NIH HHS

• Knee osteoarthritis
• Levothyroxine
• MRI
• Muscle degeneration
• Thyroid

• Aged
• Female
• Humans
• Male
• Middle Aged
• Biomarkers
• Muscle, Skeletal/drug effects
• Osteoarthritis, Knee/complications
• Quadriceps Muscle/drug effects
• Thyroxine/adverse effects
• Thyroxine/therapeutic use

• R01 AR079620 NIAMS NIH HHS
• N01AR22259 NIAMS NIH HHS
• R01 AG064256 NIA NIH HHS
• N01AR22262 NIAMS NIH HHS
• N01AR22258 NHLBI NIH HHS
• N01AR22261 NIAMS NIH HHS
• P01 AG066603 NIA NIH HHS
• N01AR22260 NIAMS NIH HHS

• Acceptability
• Adoption
• Feasibility
• Maintenance
• Osteoarthritis
• Physical activity
• Physiotherapy

• A1 Scheme App 364 Private Physiotherapy Educational Foundation
• Level 1 award Musculoskeletal Association of Chartered Physiotherapists

• Total hip replacement
• activity monitor
• gait analysis
• walking activity

• Adult
• Aged
• Female
• Humans
• Male
• Middle Aged
• Atrophy
• C9orf72 Protein/genetics
• Cohort Studies
• Exercise
• Frontotemporal Dementia
• Frontotemporal Lobar Degeneration/genetics
• Intermediate Filaments

• R01 AG071756 NIA NIH HHS
• K23 AG061253 NIA NIH HHS
• K23 AG059888 NIA NIH HHS
• R01 AG058233 NIA NIH HHS
• U01 AG079850 NIA NIH HHS
• U24 AG021886 NIA NIH HHS
• P30 AG062429 NIA NIH HHS
• U01 AG045390 NIA NIH HHS
• U19 AG063911 NIA NIH HHS
• K23 AG058752 NIA NIH HHS
• U54 NS092089 NINDS NIH HHS
• P30 AG072977 NIA NIH HHS
• R01 MH120794 NIMH NIH HHS
• R01 AG072475 NIA NIH HHS
• R35 AG071916 NIA NIH HHS
• R01 AG062268 NIA NIH HHS

• Female
• Male
• Humans
• Middle Aged
• Aged
• Osteoarthritis, Knee/diagnostic imaging
• Osteoarthritis, Knee/epidemiology
• Prospective Studies
• Knee Joint/diagnostic imaging
• Pain/diagnosis
• Lower Extremity
• Knee Injuries/complications
• Risk Factors

• KL2 TR001424 NCATS NIH HHS
• P30 AR072579 NIAMS NIH HHS
• P60-AR064464 NIAMS NIH HHS
• P30-AR072579 NIAMS NIH HHS

• Exercise
• Parkinson disease
• Reproducibility of results
• Surveys and questionnaires

• Aged
• Exercise
• Humans
• Parkinson Disease/complications
• Psychometrics
• Reproducibility of Results
• Surveys and Questionnaires

• Hypertension
• Osteoarthritis, knee
• Pain

Osteoarthritis (OA), leading to hip replacement (THR), is a primary contributor to global mobility impairment. In 2018, more than 59,000 THR surgeries were performed in Canada. Health promotion education, such as prehabilitation, is vital to optimizing surgical outcomes.

This study aims to evaluate the feasibility of the Hip Instructional Prehabilitation Program for Enhanced Recovery (HIPPER), an eHealth approach to prehabilitation education.

A single-blind (assessor-blind), 2-arm, feasibility randomized controlled trial will be conducted. We will recruit 40 (HIPPER group, n=20; control group, n=20) older adults with hip OA and on a waitlist for a THR. The HIPPER intervention consists of 12 online, interactive modules. The control group will receive the current standard practice consisting of 2 online educational sessions lasting 2 hours each (webinars). Feasibility outcomes (eg, recruitment and retention rates) will be evaluated.

Recruitment started in March 2021. As of April 20, 2021, 18 participants were recruited. All 18 completed T1 measures. Only 1 participant has been scheduled to have a surgery and therefore has been scheduled to complete T2 measures. The remainder of the participants are waiting to be notified of their surgery date. This project was funded by a Canadian Institutes of Health Research Project Grant. Our institute’s research ethics board approved this study in November 2016.

Results will lead to refinement of the HIPPER protocol in order to evaluate a standardized and geographically accessible prehabilitation program.

ClinicalTrials.gov NCT02969512; https://clinicaltrials.gov/ct2/show/NCT02969512

DERR1-10.2196/29322

• bone
• eHealth
• education
• evaluation
• feasibility
• hip
• osteoarthritis
• prehabiliatation
• preoperative education
• randomized controlled trial
• recovery
• rehabilitation
• surgery
• total hip replacement

• hyperkyphosis
• aging
• kyphosis
• lordosis
• health-related quality of life
• sex differences

• Aged
• Cohort Studies
• Exercise
• Exercise Therapy
• Female
• Follow-Up Studies
• Humans
• Independent Living
• Kyphosis
• Male
• Posture
• Quality of Life

• K12 AR084220 NIAMS NIH HHS
• K12 HD051958 NICHD NIH HHS
• P50 AR063043 NIAMS NIH HHS

Old age is associated with reduced physical ability. It is necessary to measure and evaluate the physical activity of older people. Implementing appropriate requires a valid and reliable tool. Physical Activity Scale for the Elderly (PASE) is the frequently used self-reported physical activity assessment for older adults. Therefore, this study aimed to determine the translation validity and reliability of the Persian version of the Physical Activity Scale for the Elderly.

This study is a methodological, descriptive applied research was conducted on 300 older people. The translation process of the English version of PASE into Persian was carried out according to the process of translation and adaptation of scale recommended by the World Health Organization. The reliability of the scale was examined by calculating the Cronbach’s alpha, Pearson, and intraclass correlation coefficient (ICC). The reliability and validity of the scale were evaluated by following the “Consensus-Based Standards for the Selection of Health Status Measurement Instruments” (COSMIN) checklist. To assess the face and content validity, impact score (IS), the content validity ratio (CVR), and the content validity index (CVI) were determined. A confirmatory factor analysis was also performed.

The experts approved the quality of the Persian version of PASE. The reliability was calculated with a Cronbach’s alpha of 0.94, an ICC of 0.99, and a test-retest correlation coefficient of 0.94. The qualitative and quantitative face validity of all questions by expert judgment and IS of greater than 1.5 was considered. Also, CVR and CVI scores of all questions were higher than 0.6 and 0.79, respectively. Confirmatory factor analysis revealed a good fit for the original three-factor structure.

The Persian or Farsi version of PASE was shown to have acceptable validity and reliability. This tool is suitable for measuring the physical activity level in the Persian elderly language special in clinical environments and therapeutic interventions.

• Ageing
• Farsi
• PASE
• Persian
• Physical Activity
• Psychometrics

• IPAQ
• PASE
• measurement properties
• osteoarthritis
• physical activity

• Accelerometer
• Clinical practice
• Criterion validity
• IPAQ-SF
• Osteoarthritis
• Physical activity assessment

• African Americans
• Diet quality
• obesity
• older adults
• osteoarthritis

• P30 DK092949 NIDDK NIH HHS
• R01 AG039374 NIA NIH HHS
• T32 CA057699 NCI NIH HHS
• U54 MD012523 NIMHD NIH HHS

• Aged
• Community dwelling older adults
• Physical activity
• Reliability
• Validity

• aquatic therapy
• assessment
• functional test
• questionnaires

• Exercise Therapy/methods
• Humans
• Hydrotherapy/methods
• Muscle Strength
• Osteoarthritis, Knee/therapy
• Physical Therapy Modalities
• Surveys and Questionnaires

To determine whether comorbidity presence, frequency or type is associated with Physical Activity (PA) levels in people with Osteoarthritis (OA).

Secondary data analysis of adults aged ≥45, with OA related pain recruited to the BEEP trial (knee pain, n = 514) (ISRCTN93634563) and the MOSAICS trial (peripheral joint pain, n = 525) (ISRCTN06984617). Comorbidities considered were respiratory, cardiovascular diseases (CVD), depression, type 2 diabetes and obesity. Self-report PA was measured using the Physical Activity Scale for the Elderly (PASE). Linear regression models were used to estimate the mean change (β) in PA with comorbidity presence, frequency and type adjusting for potential confounding covariates.

In the BEEP trial comorbidity presence was associated with a decrease in PASE score (β = -32.25 [95% confidence interval (95% CI) −48.57, −15.93]). Each additional comorbidity was associated with an incrementally lower PASE score, one comorbidity (β = −24.42 [-42.45, −6.38]), two comorbidities β = −34.76 [-56.05, −13.48]), and three or more comorbidities β = −73.71 [-106.84, −40.58]) compared to those with no comorbidity. This pattern was similar in MOSAICS, but with a plateau in association from two comorbidities onward. In BEEP and MOSAICS, respiratory (β = −40.60 [-60.50, −20.35]; β = −11.82 [-34.95, 11.31]) and CVD (β = −27.15 [-53.25, −1.05]; β = −30.84 [-51.89, −9.80]) comorbidities were associated with the largest reduction in PASE scores respectively.

Comorbidity presence and frequency is associated with lower PA levels and respiratory and CVD comorbidities have the greatest impact. Future exploratory work needs to be done to understand how and why comorbidity is associated with PA levels in people with OA.

• Comorbidity
• Exercise
• Osteoarthritis
• Physical activity
• Secondary analysis
• Trials

• Co-morbidity
• Depression
• Osteoarthritis
• Patient reported outcomes
• Physical activity

• Activities of Daily Living
• Arthralgia/therapy
• Cost-Benefit Analysis
• Exercise Therapy/adverse effects
• Exercise Therapy/economics
• Exercise Therapy/methods
• Humans
• Ontario
• Osteoarthritis, Knee/therapy
• Quality of Life
• Technology Assessment, Biomedical

• Muscle disuse
• hospitalization
• muscle atrophy
• sarcopenia
• total hip arthroplasty

• Aged
• Arthroplasty, Replacement, Hip
• Elective Surgical Procedures
• Female
• Hospitalization
• Humans
• Length of Stay/statistics & numerical data
• Male
• Muscle, Skeletal/diagnostic imaging
• Muscle, Skeletal/physiopathology
• Muscular Atrophy/diagnostic imaging
• Muscular Atrophy/etiology
• Muscular Atrophy/physiopathology
• Risk Factors
• Tomography, X-Ray Computed

Evidence accumulates that an active lifestyle positively influences cancer treatment outcome. A “smartphone application” (app) such as “RunKeeper,” to self-monitor physical activity (PA) might be helpful. This study aimed to examine whether using RunKeeper to increase self-reported PA is feasible in cancer patients and to evaluate patients’ opinion about using RunKeeper in a 12-week program.

Adult patients (n = 32), diagnosed with cancer, were randomized between usual care (n = 16) or a 12-week intervention with instructions to self-monitor PA with RunKeeper (n = 16). Changes in PA were determined with the Physical Activity Scale for the Elderly (PASE) at baseline (T0), 6 weeks (T1), and 12 weeks (T2). Usability and patients’ experiences were tested at T2 with the System Usability Scale (SUS) and a semi-structured interview.

Patient mean age was 33.6 years. Between T0 and T1, an increase in PA of 51% (medium estimated effect size r = 0.40) was found in PASE sum score in the intervention group compared with usual care. In addition, total minutes of PA increased with 46% (r = 0.37). These effects decreased over time (T2). Sedentary time decreased with 19% between T0 and T1 and 27% between T0 and T2. Usability was rated “good” and most patients found RunKeeper use helpful to improve PA.

Self-monitoring PA with RunKeeper was safe and feasible in cancer patients. The RunKeeper use resulted in an increase in PA after 6 weeks. RunKeeper usability was rated good and can be used to study PA in cancer patients.

NCT02391454

The online version of this article (10.1007/s00520-018-4263-5) contains supplementary material, which is available to authorized users.

• Cancer
• Exercise
• Healthy lifestyle
• Physical activity
• RunKeeper
• Self-monitoring
• Smartphone application

• Aged
• Elderly
• Energy expenditure
• Physical activity
• Questionnaire
• Spain
• Test-retest reliability
• Validity and reliability

• Aged
• Aged, 80 and over
• Exercise
• Humans
• Middle Aged
• Psychometrics
• Reproducibility of Results
• Spain
• Surveys and Questionnaires

Older adults are the fastest growing population group worldwide. Regular physical activity (PA) is reported to reduce the risk of health conditions and improve personal well-being. Few validated instruments can be used to measure the PA levels among older adults in Saudi Arabia. The Physical Activity Scale for the Elderly (PASE) is used worldwide for evaluating the PA levels of the elderly in epidemiological studies. However, this scale has not been translated into Arabic. This study aimed to cross-culturally adapt the PASE into Arabic language and evaluate its reliability and validity among community-dwelling older adults in Saudi Arabia.

This study was a cross-sectional one following Beaton guidelines to translate and perform cultural adaptation, as well as test the reliability and validity of the PASE Arabic version (PASE-A). Elderly (N=74) people from both genders, who lived in a community dwelling in Riyadh city, were selected from several primary health care centers. The study used Cronbach’s alpha coefficient to assess the internal consistency reliability, while intraclass correlation coefficient (ICC_2,1) was used for test–retest reliability and the Spearman’s rank correlation coefficient (r) was used to evaluate the correlation among PASE-A and grip strength, Timed Up and Go test, body mass index, and fat percentage.

Out of 74 older adults, 59 (79.7%) completed the PASE-A questionnaire twice. The internal consistency of the PASE-A components was good (Cronbach’s alpha 0.70–0.75), and the reliability of the components was excellent (ICC_2,1 0.90–0.98). A higher PASE-A score was associated with higher grip strength (r=0.28, p=0.05) and with shorter Timed Up and Go test times (r=−0.45, p=0.01).

The PASE-A version was easy, understandable, and relevant for Saudi older adults’ culture. This scale was a reliable and valid tool for evaluating and assessing the PA level among community-dwelling older adults in Saudi Arabia.

• PASE
• Saudi Arabia
• cross-sectional study
• elderly
• physical activity
• psychometric
• reliability

Total joint arthroplasty (TJA) is a common procedure to treat individuals with hip and knee osteoarthritis. While TJAs are successful in decreasing pain and improving quality of life, it is unclear whether individuals who undergo TJA become more physically active after surgery. It is possible that TJA, by itself, is not sufficient to affect the behavior of patients toward physical activity (PA) participation. To increase PA participation, individuals with TJA may need to be exposed to exercise/behavioral interventions specifically aimed to promote PA (ie, in addition to the surgery).

This narrative review aimed to assess the evidence on 1) whether TJAs change PA participation from pre- to postsurgery and 2) whether exercise/behavioral interventions delivered before or after TJA help to promote PA in these patients.

For aim 1, the studies that assessed PA from pre- to post-TJA reported that PA does not change in the first 3 months postsurgery. The results of follow-ups longer than 3 months but shorter than 12 months are contradictory, and the results of follow-ups longer than 12 months provide weak evidence of increased PA. Assessment of changes in PA due to TJA is challenged by the wide variability in demographics, methods used to assess PA, and different pathways of care used across studies. The results for aim 2 were limited by a scarcity of studies that used exercise/behavioral interventions to promote PA.

TJA relieves joint pain and offers a unique opportunity for patients to become more physically active. However, the current evidence is limited and unable to offer definitive results of whether TJA is effective to change PA from pre- to postsurgery. Future large studies in representative samples of patients with TJA are needed to adequately answer this question.

• behavioral intervention
• health promotion
• osteoarthritis
• physical function
• quality of life
• total hip arthroplasty
• total knee arthroplasty

Exercise interventions improve clinical outcomes of pain and function in adults with knee pain due to osteoarthritis and higher levels of physical activity are associated with lower severity of pain and higher levels of physical functioning in older adults with knee osteoarthritis in cross-sectional studies. However, to date no studies have investigated if change in physical activity level during exercise interventions can explain clinical outcomes of pain and function. This study aimed to investigate if change in physical activity during exercise interventions is associated with future pain and physical function in older adults with knee pain.

Secondary longitudinal data analyses of a three armed exercise intervention randomised controlled trial. Participants were adults with knee pain attributed to osteoarthritis, over the age of 45 years old (n = 514) from Primary Care Services in the Midlands and Northwest regions of England.

Crude and adjusted associations between absolute change in physical activity from baseline to 3 months (measured by the self-report Physical Activity Scale for the Elderly (PASE)) and i) pain ii) physical function (Western Ontario and McMaster Universities Osteoarthritis Index) and iii) treatment response (OMERACT-OARSI responder criteria) at 3 and 6 months follow-up were investigated using linear and logistic regression.

Change in physical activity level was not associated with future pain, function or treatment response outcomes in crude or adjusted models at 3 or 6 months (P > 0.05). A 10 point increase in PASE was not associated with pain β = − 0.01 (− 0.05, 0.02), physical function β = − 0.09 (− 0.19, 0.02) or likelihood (odds ratio) of treatment response 1.02 (0.99, 1.04) at 3 months adjusting for sociodemographics, clinical covariates and the trial intervention arm. Findings were similar for 6 month outcome models.

Change in physical activity did not explain future clinical outcomes of pain and function in this study. Other factors may be responsible for clinical improvements following exercise interventions. However, the PASE may not be sufficiently responsive to measure change in physical activity level. We also recommend further investigation into the responsiveness of commonly used physical activity measures.

(ISRCTN93634563). Registered 29th September 2011.

The online version of this article (10.1186/s12891-018-1968-z) contains supplementary material, which is available to authorized users.

• Exercise
• Geriatrics
• Knee
• Osteoarthritis
• Pain
• Physical activity

• Community
• Health promotion
• Joint replacement
• Lower limb
• Physical activity

• COPD
• Physical Activity Scale for the Elderly
• elderly
• physical activity
• reliability
• validity

• Activities of Daily Living
• Age Factors
• Aged
• Aged, 80 and over
• Aging/psychology
• Asian People/psychology
• China/epidemiology
• Cross-Sectional Studies
• Exercise
• Exercise Tolerance
• Female
• Health Status
• Humans
• Male
• Middle Aged
• Observer Variation
• Predictive Value of Tests
• Psychometrics
• Pulmonary Disease, Chronic Obstructive/diagnosis
• Pulmonary Disease, Chronic Obstructive/ethnology
• Pulmonary Disease, Chronic Obstructive/physiopathology
• Pulmonary Disease, Chronic Obstructive/psychology
• Reproducibility of Results
• Surveys and Questionnaires
• Time Factors
• Walking

• Baecke Questionnaire
• Persian Version
• Reliability
• Validity

• arthritis
• falls
• injury
• joint degenerative
• lower limb
• older people

Self-reported information from questionnaires is frequently used in epidemiological studies, but few of these studies provide information on the reproducibility of individual items contained in the questionnaire. We studied the test–retest reliability of self-reported diabetes among 33,919 participants in Norwegian Women and Cancer Study.

The test–retest reliability of self-reported type 1 and type 2 diabetes diagnoses was evaluated between three self-administered questionnaires (completed in 1991, 1998, and 2005 by Norwegian Women and Cancer participants) by kappa agreement. The time interval between the test–retest studies was ~7 and ~14 years. Sensitivity of the kappa agreement for type 1 and type 2 diabetes diagnoses was assessed. Subgroup analysis was performed to assess whether test–retest reliability varies with age, body mass index, physical activity, education, and smoking status.

The kappa agreement for both types of self-reported diabetes diagnoses combined was good (⩾0.65) for all three test–retest studies (1991–1998, 1991–2005, and 1998–2005). The kappa agreement for type 1 diabetes was good (⩾0.73) in the 1991–2005 and the 1998–2005 test–retest studies, and very good (0.83) in the 1991–1998 test–retest study. The kappa agreement for type 2 diabetes was moderate (0.57) in the 1991–2005 test–retest study and good (⩾0.66) in the 1991–1998 and 1998–2005 test–retest studies. The overall kappa agreement in the 1991–1998 test–retest study was stronger than in the 1991–2005 test–retest study and the 1998–2005 test–retest study. There was no clear pattern of inconsistency in the kappa agreements within different strata of age, BMI, physical activity, and smoking. The kappa agreement was strongest among the respondents with 17 or more years of education, while generally it was weaker among the least educated group.

The test–retest reliability of the diabetes was acceptable and there was no clear pattern of inconsistency in the kappa agreement stratified by age, body mass index, physical activity, and smoking. The study suggests that self-reported diabetes diagnosis from middle-aged women enrolled in the Norwegian Women and Cancer Study is reliable.

• Kvinner og kreft
• Norway
• Norwegian Women and Cancer
• Type 2 diabetes
• kappa
• metabolic syndrome
• questionnaires
• reproducibility
• test–retest reliability
• type 1 diabetes

• Aged
• Cohort Studies
• Female
• Humans
• Male
• Motor Activity/physiology
• Osteoarthritis/physiopathology
• Prospective Studies
• Treatment Outcome

• N01 AR022261 NIAMS NIH HHS
• N01 AR022259 NIAMS NIH HHS
• N01 AR022258 NIAMS NIH HHS
• N01 AR022262 NIAMS NIH HHS
• N01 AR022260 NIAMS NIH HHS

Obesity is associated with functional impairment, institutionalization, and increased mortality risk in elders. Dynapenia is defined as reduced muscle strength and is a known independent predictor of adverse events and disability. The synergy between dynapenia and obesity leads to worse outcomes than either independently. We identified the impact of dynapenic obesity in a cohort at risk for and with knee osteoarthritis on function.

We identified adults aged ≥ 60 years from the Osteoarthritis Initiative. Obesity was defined as a body mass index ≥ 30 kg/m². Dynapenia was classified using the lowest sex-specific tertile of knee extensor strength. Participants were grouped according to obesity and knee strength: dynapenic obesity; dynapenia without obesity; obesity without dynapenia; and no dynapenia nor obesity. Four-year data was available. Self-reported activities of daily living (ADL) were assessed at follow-up. Outcomes of gait speed, 400 m walk distance, Late-life Disability and Function Index (LLFDI), and Short-Form (SF)-12 were analyzed using mixed effects and logistic regression models.

Of 2025 subjects (56.3 % female), mean age was 68.2 years and 182 (24.1 %) had dynapenic obesity. Dynapenic obesity was associated with reduced gait speed, LLFDI-limitations, and SF-12 physical score in both sexes and in the 400 m walk in men only (all p < 0.001). A time*group interaction was significant for dynapenic obese men in the 400 m walk distance only. Odds of ADL limitations in dynapenic obesity was OR 2.23 [1.42:3.50], in dynapenia 0.98 [0.66:1.46], and in obesity 1.98 [1.39:2.80] in males. In females, odds were 2.45 [1.63:3.68], 1.60 [1.15:2.22], and 1.47 [1.06:2.04] respectively.

Dynapenic obesity may be a risk factor for functional decline suggesting the need to target subjects with low knee strength and obesity.

The online version of this article (doi:10.1186/s12877-015-0118-9) contains supplementary material, which is available to authorized users.

Total knee arthroplasty (TKA) is the most commonly performed elective surgery in the United States. TKA typically improves functional performance and reduces pain associated with knee osteoarthritis. Little is known about the influence of TKA on overall physical activity levels. Physical activity, defined as “any bodily movement produced by skeletal muscles that results in energy expenditure”, confers many health benefits but typically decreases with endstage osteoarthritis. The purpose of this review is to describe the potential benefits (metabolic, functional, and orthopedic) of physical activity to patients undergoing TKA, present results from recent studies aimed to determine the effect of TKA on physical activity, and discuss potential sources of variability and conflicting results for physical activity outcomes. Several studies utilizing self-reported outcomes indicate that patients perceive themselves to be more physically active after TKA than they were before surgery. Accelerometry-based outcomes indicate that physical activity for patients after TKA remains at or below pre-surgical levels. Several different factors likely contributed to these variable results, including the use of different instruments, duration of follow-up, and characteristics of the subjects studied. Comparison to norms, however, suggests that daily physical activity for patients following TKA may fall short of healthy age-matched controls. We propose that further study of the relationship between TKA and physical activity needs to be performed using accelerometry-based outcome measures at multiple post-surgical time points.

• Physical activity
• Knee osteoarthritis
• Self-report
• Total knee arthroplasty
• Accelerometer

• Malaysia
• community dwelling older adults
• physical activity scale
• reliability
• validity

• Clinical trials
• Osteoarthritis
• Rehabilitation

• Clinical Trials as Topic/standards
• Humans
• Osteoarthritis/rehabilitation
• Practice Guidelines as Topic
• Rehabilitation Research