Evidence map›Paper›PMID 40490692›Full record

ArticleBMC geriatrics2025

Association of kyphosis index with decreased physical function and cognitive domain in community-dwelling older adults: a cross-sectional study.

Misa Nakamura, Masakazu Imaoka, Fumie Tazaki, Takanari Kubo, Tatsunori Murakami, Koichi Shimano, Masataka Ohki, Masayo Inoue, Mitsumasa Hida

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Article in BMC geriatrics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Misa NakamuraGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan. nakamuram@kawasakigakuen.ac.jp.
Masakazu ImaokaGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan.
Fumie TazakiGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan.
Takanari KuboDepartment of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma Kaizuka, Kaizuka, Osaka, 597-0104, Japan.
Tatsunori MurakamiGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan.
Koichi ShimanoGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan.
Masataka OhkiGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan.
Masayo InoueGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan.
Mitsumasa HidaGraduate School of Rehabilitation, Osaka Kawasaki Rehabilitation University, 158 Mizuma, Kaizuka, Osaka, 597-0104, Japan.

Funding

JSPS KAKENHI 24K14238
6 · The paper itself

Abstract

backgroundCognitive and physical function both typically decline with age. Kyphosis is backward curvature of the spine that is especially commonly seen in older adults. This study seeks to clarify the suspected relationship between kyphosis posture and cognitive function in community-dwelling older adults.

methodsThis cross-sectional study included 301 community-dwelling individuals aged ≥ 60 years in Japan. The kyphosis index (KI) was determined according to a previously-reported method, cognitive function was evaluated using ACE-III, and physical functions were measured by handgrip strength, gait speed, and 2-step test. Multiple linear regression analysis was applied to identify factors affecting the KI, and we used a simple mediation analysis to clarify factors mediating the relationship between the KI and cognitive function using PROCESS Macro- Model 4 for SPSS and bootstrap method. Indirect effects were tested using bootstrapped confidence intervals (CI).

resultsIn multiple linear regression analysis, gait speed (β = -0.188, p = 0.0007), 2-step value (β = －0.227, p < 0.0001) and language domain score (β = －0.136, p = 0.0160) were significantly associated with KI after adjustment for sex, age, education, body mass index and osteoporosis. Mediation analysis revealed a relationship between KI and language score; gait speed (indirect effect: −0.019, 95% CI: −0.039 to − 0.005) and 2-step value (indirect effect: −0.026, 95% CI: −0.051 to − 0.007) in complete mediation and grip strength (indirect effect: −0.014, 95% CI: −0.036 to − 0.001) in partial mediation.

conclusionsThis study highlights worsening of kyphosis results to be related to decline in language ability by physical function.

trial registrationNot applicable.

Indexed as

CognitionIndependent LivingKyphosisPhysical Functional PerformanceAgedAged, 80 and overCross-Sectional StudiesFemaleHand StrengthHumansJapanMaleMiddle AgedWalking SpeedCognitive functionKyphosis indexOlder adultsPhysical function

Identifiers

PMID40490692
PMCPMC12147278

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.