Estimating cardiorespiratory fitness in older adults using a usual‐paced 400‐m <scp>long‐distance</scp> corridor walk

Moffit, Reagan E.; Qiao, Yujia; Moored, Kyle; Santanasto, Adam J; Lange‐Maia, Brittney S.; Cawthon, Peggy M.; Goodpaster, Bret H.; Strotmeyer, Elsa S.; Newman, Anne B.; Glynn, Nancy W.

doi:10.1111/jgs.17360

Cited by 5 publications

(6 citation statements)

References 9 publications

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“…We previously found that usual‐paced 400 m LDCW completion time was correlated with ( r = −0.64) and explained 41% of the total 57% variance in VO 2 peak 16 . Our model in SOMMA explained slightly less variance, even after adjustment for more potential confounding variables.…”

Section: Discussionmentioning

confidence: 52%

“…We previously found that usual-paced 400 m LDCW completion time was correlated with (r = À0.64) and explained 41% of the total 57% variance in VO 2 peak. 16 Our model in SOMMA explained slightly less variance, even after adjustment for more potential confounding variables. When instructed to walk at a usual pace, some participants may walk at a speed that puts them below a certain intensity threshold to avoid physiological responses to exercise.…”

Section: Discussionmentioning

confidence: 61%

“…Previously, we determined that faster usual‐paced 400 m LDCW completion was directly associated with higher VO 2 peak in a small, healthy population of older adults 16 . However, limited sample size prohibited our ability to generalize our findings across a wider range of function and fitness.…”

Section: Introductionmentioning

confidence: 87%

“…Previously, we determined that faster usual-paced 400 m LDCW completion was directly associated with higher VO 2 peak in a small, healthy population of older adults. 16 However, limited sample size prohibited our ability to generalize our findings across a wider range of function and fitness. Therefore, we assessed whether a usual-paced 400 m LDCW was associated with VO 2 peak among participants in the Study of Muscle, Mobility and Aging (SOMMA).…”

Section: Introductionmentioning

confidence: 97%

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Usual‐paced 400 m long distance corridor walk estimates cardiorespiratory fitness among older adults: The Study of Muscle, Mobility and Aging

Garcia,

Cawthon,

Nicklas

et al. 2023

J American Geriatrics Society

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BackgroundCardiopulmonary exercise testing (CPET), the gold‐standard method to quantify cardiorespiratory fitness (CRF), is not always feasible due to cost, access, and burden. The usual‐paced 400 m long distance corridor walk (LDCW), a measure of mobility among older adults, may provide an alternate method to assess CRF. The purpose of this study was to develop and validate an estimating equation to estimate VO2peak from average 400 m walking speed (WS) among participants in the Study of Muscle, Mobility and Aging (SOMMA).MethodsAt baseline, women (58%) and men age 70 years and older enrolled in SOMMA (N = 820, 76.2 ± 4.9 years, 86% Non‐Hispanic White) completed a 400 m LDCW (400 m WS = 400 m/completion time in seconds) and symptom‐limited maximal CPET (Modified Balke Protocol). VO2peak (mL/kg/min) was considered the highest 30‐second average oxygen consumption during CPET. Other covariates included: age, sex, race, physical activity (7‐day wrist‐worn accelerometer), physical function (Short Physical Performance Battery, range 0–12), perceived physical fatigability (Pittsburgh Fatigability Scale, range 0–50), and Borg Rating of Perceived Exertion (RPE, range 6–20) at completion of the 400 m LDCW. Stepwise linear regression was used. Internal validation was completed using data‐splitting method (70%; 30%).ResultsMean VO2peak was 20.2 ± 4.8 mL/kg/min and mean 400 m WS was 1.06 ± 0.2 m/s. Each 0.05 m/s increment in 400 m WS was associated with a 0.40 mL/kg/min higher VO2peak after covariate adjustment. An estimating equation including 400 m WS, age, sex, race, and RPE was developed. Internal validation showed low overall bias (−0.26) and strong correlation (r = 0.71) between predicted and measured VO2peak values. Bland–Altman plot and regression analyses indicated predicted VO2peak was an acceptable alternative, despite mean underestimation of 4.53 mL/kg/min among the highly fit.ConclusionsUsual‐paced 400 m LDCW strongly correlates with direct measures of CRF during CPET in older adults with lower fitness and can be used to test both fitness and function.

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Section: Discussionmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 97%

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Usual‐paced 400 m long distance corridor walk estimates cardiorespiratory fitness among older adults: The Study of Muscle, Mobility and Aging

Garcia,

Cawthon,

Nicklas

et al. 2023

J American Geriatrics Society

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show abstract

“…Previously, we determined that faster usual-paced 400m LDCW completion was directly associated with higher VO 2 peak in a small, healthy population of older adults. 16 However, limited sample size prohibited our ability to generalize our findings across a wider range of function and fitness. Therefore, we assessed whether a usual-paced 400m LDCW was associated with VO 2 peak among participants in the Study of Muscle, Mobility and Aging (SOMMA).…”

Section: Introductionmentioning

confidence: 97%

Usual-Paced 400m Long Distance Corridor Walk Estimates Cardiorespiratory Fitness among Older Adults: The Study of Muscle, Mobility and Aging (SOMMA)

Moffit,

Cawthon,

Nicklas

et al. 2023

Preprint

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BackgroundCardiopulmonary exercise testing (CPET), the gold-standard method to quantify cardiorespiratory fitness (CRF), is not always feasible due to cost, access, and burden. The usual-paced 400m long-distance corridor walk (LDCW), a measure of mobility among older adults, may provide an alternate method to assess CRF among populations unable to complete maximal intensity testing. The purpose of this study was to develop and validate an estimating equation to estimate VO2peak from average 400m walking speed (WS) among participants in the Study of Muscle, Mobility and Aging (SOMMA).MethodsAt baseline, participants (N=820, 76.2±4.9 years, 58% Women, 86% Non-Hispanic White) completed a 400m LDCW (400m WS=400m/completion time in seconds) and symptom-limited maximal CPET (Modified Balke Protocol). VO2peak (mL/kg/min) was considered the highest 30-second average oxygen consumption during CPET. Other covariates included: age, sex, race, physical activity (7-day wrist-worn accelerometer), physical function (Short Physical Performance Battery, range 0-12), perceived physical fatigability (Pittsburgh Fatigability Scale, range 0-50), and Borg Rating of Perceived Exertion (RPE, range 6-20) at completion of the 400m LDCW. Stepwise linear regression was used. Internal validation was completed using data-splitting method (70%; 30%).ResultsMean VO2peak was 20.2±4.8 mL/kg/min and mean 400m WS was 1.06±0.2 m/s. Each 0.05 m/s increment in 400m WS was associated with a 0.40 mL/kg/min higher VO2peak after adjustment for covariates. An estimating equation including 400m WS, age, sex, race, and RPE was developed. Internal validation showed low overall bias (-0.26) and strong correlation (r = 0.71) between predicted and measured VO2peak values. Bland-Altman plot and regression analyses indicated predicted VO2peak was an acceptable alternative, despite mean underestimation of 4.53 mL/kg/min among those with CPET VO2peak ≥25 mL/kg/min.ConclusionsUsual-paced 400m LDCW strongly correlates with direct measures of cardiorespiratory fitness during CPET in older adults with lower fitness and can be used to test both fitness and function.

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Perceived Physical Fatigability Predicts All-Cause Mortality in Older Adults

Glynn

Gmelin

Renner

et al. 2021

The Journals of Gerontology: Series A

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Background Perceived physical fatigability is highly prevalent in older adults and associated with mobility decline and other health consequences. We examined the prognostic value of perceived physical fatigability as an independent predictor of risk of death among older adults. Methods Participants (N = 2,906), mean age 73.5 [SD, 10.4] years, 54.2% women, 99.7% white enrolled in the Long Life Family Study were assessed at Visit 2 (2014-2017) with 2.7 [SD, 1.0] years follow-up. The Pittsburgh Fatigability Scale (PFS), a 10-item, self-administered validated questionnaire (score range 0-50, higher=greater fatigability) measured perceived physical fatigability at Visit 2. Deaths post-Visit 2 through December 31, 2019 were identified by: family members notifying field centers, reporting during another family member’s annual phone follow-up, an obituary, or Civil Registration System (Denmark). We censored all other participants at their last contact. Cox proportional hazard models predicted mortality by fatigability severity, adjusted for family relatedness and other covariates. Results Age-adjusted PFS Physical scores were higher for those who died (19.1 [SE, 0.8]) compared to alive (12.2, [SE, 0.4]) overall, as well as across age strata (P<.001), except for those 60-69 years (P=.79). Participants with the most severe fatigability (PFS Physical scores ≥25) were over twice as likely to die (HR, 2.33 [95% CI, 1.65 to 3.28]) compared to those with less severe fatigability (PFS Physical scores <25) after adjustment. Conclusions This work underscores the utility of the PFS as a novel patient-reported prognostic indicator of phenotypic aging that captures both overt and underlying disease burden that predicts death.

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Estimating cardiorespiratory fitness in older adults using a usual‐paced 400‐m long‐distance corridor walk

Cited by 5 publications

References 9 publications

Usual‐paced 400 m long distance corridor walk estimates cardiorespiratory fitness among older adults: The Study of Muscle, Mobility and Aging

Usual‐paced 400 m long distance corridor walk estimates cardiorespiratory fitness among older adults: The Study of Muscle, Mobility and Aging

Usual-Paced 400m Long Distance Corridor Walk Estimates Cardiorespiratory Fitness among Older Adults: The Study of Muscle, Mobility and Aging (SOMMA)

Perceived Physical Fatigability Predicts All-Cause Mortality in Older Adults

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