Paired Integrative Exercise Program for People With Dementia and Caregivers

Alzheimer's Disease Assessment Scale - cognitive subscale (ADAS-cog) - total score This was was used to directly assess cognitive function in PWCI. It is one of the most commonly used outcome measures in dementia drug treatment trials. It includes direct assessment of learning (10-word list), naming (objects), following commands, constructional praxis (figure copying), ideational praxis (mailing a letter), orientation (person, time, place), recognition memory and remembering test instructions. The ADAS-cog has shown high consistency and test-retest reliability. Higher scores (range 0-70) indicate worse cognitive function.

Short Physical Performance Battery (SPPB) - total score The Short Physical Performance Battery (SPPB) was developed by the National Institute on Aging to provide an objective tool for measuring physical performance in older adults. It includes direct assessment of lower body strength, balance and gait speed that provide a summary score (range 0-12). Higher scores indicate higher performance ability.

Quality of life in Alzheimer's disease (QOL-AD) - total score The Quality of Life Scale in Alzheimer's Disease (QOL-AD) asks PWDs to rate their current quality of life on a 4-point Likert scale (poor, fair, good, excellent) in 13 areas: physical health, energy, mood, living situation, memory, family, marriage, friends, self as a whole, ability to do chores around the house, ability to do things for fun, money, and life as a whole. Internal consistency is excellent with a Cronbach's alpha coefficient of 0.82. Higher scores (range 4-52) indicate higher quality of life.

Caregiver Burden Inventory (CBI) - total score This is a standard 24-item measure that includes questions about the CPs feelings about caregiving on a 5-point Likert scale with 5 domains. This measure has good internal consistency. Higher scores (range 0-96) indicate higher burden.

Alzheimer's Disease Assessment Scale - cognitive subscale (ADAS-cog) - total score The Alzheimer's Disease Assessment Scale - cognitive subscale (ADAS-cog) was used to directly assess cognitive function in PWD. It is one of the most commonly used outcome measures in dementia drug treatment trials. It includes direct assessment of learning (10-word list), naming (objects), following commands, constructional praxis (figure copying), ideational praxis (mailing a letter), orientation (person, time, place), recognition memory and remembering test instructions. The ADAS-cog has shown high consistency and test-retest reliability. Higher scores (range 0-70) indicate worse cognitive function.

Short Physical Performance Battery (SPPB) - total score The Short Physical Performance Battery (SPPB) was developed by the National Institute on Aging to provide an objective tool for measuring physical performance in older adults. It includes direct assessment of lower body strength, balance and gait speed that provide a summary score (range 0-12). Higher scores indicate higher performance ability

Quality of life in Alzheimer's disease (QOL-AD) - total score Quality of life in Alzheimer's disease (QOL-AD) - total score The Quality of Life Scale in Alzheimer's Disease (QOL-AD) asks PWDs to rate their current quality of life on a 4-point Likert scale (poor, fair, good, excellent) in 13 areas: physical health, energy, mood, living situation, memory, family, marriage, friends, self as a whole, ability to do chores around the house, ability to do things for fun, money, and life as a whole. Internal consistency is excellent with a Cronbach's alpha coefficient of 0.82. Higher scores (range 4-52) indicate higher quality of life.

Caregiver Burden Inventory (CBI) - total score Caregiver Burden Inventory (CBI) - total score This is a standard 24-item measure that includes questions about the CPs feelings about caregiving on a 5-point Likert scale with 5 domains. This measure has good internal consistency. Higher scores (range 0-96) indicate higher burden.

Disability Assessment for Dementia (DAD) - total score Independence (PWD - CP report). The Disability Assessment for Dementia (DAD)is a standard measure that asks CPs to rate the participant's disability with 17 basic and 23 instrumental activities of daily living over the past 2 weeks. The DAD has high established validity and high test-retest reliability, inter-rater reliability, and internal consistency. Scores represent the percentage of activities performed independently during the past two weeks of those applicable (total number of questions answered yes/total questions applicable)∗100 with the range from 0 to 100. Higher scores indicate greater independence

The Neuropsychiatric Inventory (NPI) was administered to assess the number (NPI-N), caused by 12 common dementia-related behaviors (delusions, hallucinations, agitation/aggression, depression/dysphoria, anxiety, elation/euphoria, apathy/indifference, disinhibition, irritability/lability, aberrant motor behavior, sleep, and appetite/eating) by CP report and has good test-retest reliability and internal consistency. NPI-N scores range from 0-12. Higher scores indicate worse outcomes (i.e., more behaviors, greater frequency/severity and greater distress).

Neuropsychiatric Inventory (NPI) - total frequency * severity measures distress caused by 12 common dementia-related behaviors (delusions, hallucinations, agitation/aggression, depression/dysphoria, anxiety, elation/euphoria, apathy/indifference, disinhibition, irritability/lability, aberrant motor behavior, sleep, and appetite/eating) by CP report and has good test-retest reliability and internal consistency. NPI-FS was calculated by multiplying the frequency∗severity of behaviors, which had a range of 0-144. Higher scores indicate worse outcomes (i.e., more behaviors, greater frequency/severity and greater distress).

Neuropsychiatric Inventory (NPI) - total distress level of caregiver distress (NPI-CD) caused by 12 common dementia-related behaviors (delusions, hallucinations, agitation/aggression, depression/dysphoria, anxiety, elation/euphoria, apathy/indifference, disinhibition, irritability/lability, aberrant motor behavior, sleep, and appetite/eating) by CP report and has good test-retest reliability and internal consistency. NPI-CD range from 0-60. Higher scores indicate worse outcomes (i.e., more behaviors, greater frequency/severity and greater distress).

Falls Efficacy Scale (FES) - total score We administered a modified version of the Falls Efficacy Scale (FES) to assess concern about falling for the PWD in 10 different scenarios. Response categories used a 4-point Likert scale (range: 10 to 40), with higher scores indicating greater concern about falling (i.e., lower efficacy). Although the FES has been validated in individuals with cognitive impairment the questionnaire was administered separately to PWD and CPs to obtain their independent perspetive

Falls Efficacy Scale (FES) - total score We administered a modified version of the Falls Efficacy Scale (FES) to assess concern about falling for the PWD in 10 different scenarios. Response categories used a 4-point Likert scale (range: 10 to 40), with higher scores indicating greater concern about falling (i.e., lower efficacy). Although the FES has been validated in individuals with cognitive impairment the questionnaire was administered separately to PWD and CPs to obtain their independent perspective

Quality of Life in Alzheimer's Disease (QOL-AD) - total score The Quality of Life Scale in Alzheimer's Disease (QOL-AD) also asks CPs to rate the PWD current quality of life on the same scale as the PWD QOL self-report. It asks to rate their current quality of life on a 4-point Likert scale (poor, fair, good, excellent) in 13 areas: physical health, energy, mood, living situation, memory, family, marriage, friends, self as a whole, ability to do chores around the house, ability to do things for fun, money, and life as a whole. Internal consistency is excellent with a Cronbach's alpha coefficient of 0.82. Higher scores (range 4-52) indicate higher quality of life.

Geriatric Depression Scale (GDS) - total score. The Geriatric Depression Scale (GDS) is a standard measure that includes 15 yes/no questions assessing depressive symptomatology over the past week. PWD and CP answered separately regarding their own mood. This scale ranges from 0 to 15 and has been validated in people with and without cognitive impairment. Higher scores indicate more depressive symptoms.

Positive Aspects of Caregiving (PAC) - total score. The PAC scale includes 9 questions about the benefits of caregiving noticed by the CPs about themselves, which are rated on a 5-point Likert scale. This measure has high internal consistency and can improve with CP training interventions. Total scores range from 11 to 55 with higher scores indicating more positive feelings.

Disability Assessment for Dementia (DAD) - total score. The DAD is a standard measure that asks CPs to rate the participant's disability with 17 basic and 23 instrumental activities of daily living over the past 2 weeks. The DAD has high established validity and high test-retest reliability, inter-rater reliability, and internal consistency. Scores represent the percentage of activities performed independently during the past two weeks of those applicable (total number of questions answered yes/total questions applicable)∗100 with the range from 0 to 100. Higher scores indicate greater independence.

Neuropsychiatric Inventory (NPI) - total number of symptoms. The NPI asks CPs to report the number (NPI-N), frequency/severity (NPI-FS), and level of caregiver distress (NPI-CD) caused by 12 common dementia-related behaviors (delusions, hallucinations, agitation/aggression, depression/dysphoria, anxiety, elation/euphoria, apathy/indifference, disinhibition, irritability/lability, aberrant motor behavior, sleep, and appetite/eating) and has good test-retest reliability and internal consistency. NPI-N scores range from 0-12.

Neuropsychiatric Inventory - Frequency/Severity (NPI-FS). For each behavior present, care partners are asked to rate the frequency (occasionally=1, often=2, frequently=3, very frequently=4) and severity (mild=1, moderate=2, severe=3). The score is obtained by multiplying frequency and severity and adding them for each behavior. Scores may range from 0 to 144 with higher scores indicating more frequent/severe behaviors.

Neuropsychiatric Inventory - caregiver distress (NPI-CD). For each behavior, caregivers are asked how emotionally distressing they find the behavior on a scale from 0 (not distressing at all) to 5 (extreme or very severe). Scores may range from 0 to 60 with higher scores indicating greater distress.

Falls Efficacy Scale (FES) - total score. We administered a modified version of the FES to assess the participant's concern about falling in 10 different scenarios. Response categories used a 4-point Likert scale (range: 10 to 40), with higher scores indicating greater concern about falling (i.e., lower efficacy).

Falls Efficacy Scale (FES) - total score. We administered a modified version of the FES to assess the caregiver's concern about the participant falling in 10 different scenarios. Response categories used a 4-point Likert scale (range: 10 to 40), with higher scores indicating greater concern about falling (i.e., lower efficacy).

Quality of Life in Alzheimer's Disease (QOL-AD) - total score. Caregivers were asked to rate the QOL of participants with dementia on a 4-point Likert scale (poor, fair, good, excellent) in 13 areas: physical health, energy, mood, living situation, memory, family, marriage, friends, self as a whole, ability to do chores around the house, ability to do things for fun, money, and life as a whole. Internal consistency is excellent with a Cronbach's alpha coefficient of 0.82. Higher scores (range 4-52) indicate higher quality of life.

Geriatric Depression Scale (GDS) - total score. The GDS is a standard measure that includes 15 yes/no questions assessing depressive symptomatology over the past week. PWD and CP answered separately regarding their own mood. This scale ranges from 0 to 15 and has been validated in people with and without cognitive impairment. Higher scores indicate more depressive symptoms.

Positive Aspects of Caregiving (PAC) - total score. The PAC includes 9 questions about the benefits of caregiving noticed by the CPs about themselves, which are rated on a 5-point Likert scale. This measure has high internal consistency and can improve with CP training interventions. Total scores range from 11 to 55 with higher scores indicating more positive feelings.