Obesity

Mediterranean Diet, Physical Activity, and Bone Health in Older Adults: A Secondary Analysis of a Randomized Clinical Trial

JAMA Netw OpenPublished Secondary analysis of the PREDIMED-Plus randomised trial

Primary result · Lumbar spine (L1-L4) BMD, mean changeResult — go to the resultBetween-group difference 0.9 g/cm² 95% CI 0.1–1.8

Authors' conclusion

In the PREDIMED-Plus trial, an energy-reduced Mediterranean diet and physical activity lifestyle intervention mitigated weight loss- and age-related BMD decline among older women with metabolic syndrome compared with conventional ad libitum Mediterranean diet recommendations.

Study context

Population
Men and women aged 55–75 years with metabolic syndrome and overweight or obesity, with access to DXA, 4 centres in Spain454 women · 470 men
Participants
924 participants
Comparison
Energy-reduced Mediterranean diet plus increased physical activity vs ad libitum Mediterranean diet without physical activity promotion
  • Interventionn = 460
  • Controln = 464reference
Primary endpoint
BMD (total femur, lumbar spine [L1-L4], femoral trochanter), total BMC and low BMD prevalence by DXA
Follow-up
1 and 3 years
Methodological detailsprespecified secondary analysis, parallel-group, 3-year
  • Prespecified secondary analysis
  • Parallel-group
  • 3-year

Primary result

Lumbar spine (L1-L4) BMD, mean change · 3 years

Between-group difference

0.9 g/cm²

95% CI 0.1–1.8

overall P = .05

Interventionvs Control
between-group difference 0.9 g/cm² (95% CI 0.1–1.8); overall P = .05

As reported in the abstract

Further findings

OutcomeBetween-group difference (g/cm²) (95% CI)P value
Lumbar spine (L1-L4) BMD, women (subgroup) · 3 yearsAfter 1 year: −0.1 (95% CI −1.3 to 1.1) g/cm²1.8 (0.6–2.9)overall P = .005

Lumbar spine bone mineral density (BMD), men (subgroup)

Protective association not observed for men

Total bone mineral content (BMC) and low BMD prevalence · 3 years

No overall 3-year intervention effect

Original publication

Mediterranean Diet, Physical Activity, and Bone Health in Older Adults: A Secondary Analysis of a Randomized Clinical Trial. JAMA Netw Open. Published 1 April 2025. doi:10.1001/jamanetworkopen.2025.3710

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