Aging and institutionalization, associated with functional and psychological decline, justify studying how physical performance is linked to mental health in older adults.
Objectives: To analyze the relationship between physical performance and anxiety, depression, sleep quality, and perceived stress in institutionalized older adults.
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Aging and institutionalization, associated with functional and psychological decline, justify studying how physical performance is linked to mental health in older adults.
Objectives: To analyze the relationship between physical performance and anxiety, depression, sleep quality, and perceived stress in institutionalized older adults.
Methods: Multicenter, observational, cross-sectional study in eight nursing homes (
N = 105; ≥65 years, M = 80.78 SD ± 7.91). Instruments: SPPB, HADS, PSQI, PSS-10. Descriptives and exploratory bivariate tests. Primary analysis: single multivariable linear regression with SPPB as outcome and HADS-A, HADS-D, PSQI, PSS-10 entered simultaneously, adjusted for age and sex. Robustness: GLM with robust SEs, influence sensitivity excluding Cook’s D > 4/n or leverage > 2 p/n, and a proportional-odds model for SPPB. All statistical tests were two-sided, with α set at 0.05.
Results: Mean SPPB was 6.94 ± 3.17; 77.1% of participants showed poor physical performance. Bivariate: All mental health constructs showed significant associations with physical performance. Multivariable model: adjusted
R2 = 0.198;
F (6,98) = 5.28,
p < 0.001. Depression
B = −0.230 (95% CI −0.398 to −0.061),
p = 0.008; sleep quality (higher = worse)
B = −0.187 (95% CI −0.351 to −0.024),
p = 0.025; age
B = −0.087 (95% CI −0.158 to −0.017),
p = 0.016. Anxiety showed a positive adjusted association
B = +0.224 (95% CI 0.038 to 0.410),
p = 0.019 (consistent with suppression); perceived stress
B = −0.062,
p = 0.275; sex
B = −0.144,
p = 0.812. Robust SEs left inferences unchanged. Influence sensitivity (
n = 97) preserved directions with the PSQI association attenuating to non-significance. Ordinal results were directionally consistent.
Conclusions: After adjusting for age and sex, depression and sleep quality independently relate to physical function, while age is inversely associated; anxiety and perceived stress show no independent effects.
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