Associations of sleep quality, quantity and nutrition in oldest-old men The Helsinki Businessmen Study (HBS)
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RESEARCH PAPER
Associations of sleep quality, quantity and nutrition in oldest‑old men The Helsinki Businessmen Study (HBS) Satu K. Jyväkorpi1 · Annele Urtamo1 · Mika Kivimäki1 · Timo E. Strandberg1,2 Received: 29 June 2020 / Accepted: 14 October 2020 © The Author(s) 2020
Key summary points Aim To investigate associations of sleep quality and quantity and nutrition in oldest-old men. Findings Sleep quality was associated with nutritional status and vegetable intakes, whereas sleep quantity was linked to fish intake. Message Healthy nutrition may be an important contributor of sleep hygiene in oldest-old men. Abstract Introduction Sleep quality and quantity often decline as people age, which may negatively impact health. We examined how nutrition is associated with self-reported sleep quality and quantity in oldest-old community-dwelling men. Methods In this cross-sectional analysis of the Helsinki Businessmen Study (HBS), a random sample of 130 surviving participants underwent a clinical examination in 2017–2018. Food and nutrient intakes were retrieved from 3-day food diaries in 126 men, and sleep quality and quantity were determined with a questionnaire. Nutritional status was assessed using Mini Nutritional Assessment Short Form (MNA-SF), General Health and Vitality were measured with RAND-36/SF-36 healthrelated quality of life instrument, and albumin and creatinine levels were analyzed from fasting serum samples. Results Mean age of the survivors was 87 years (range 83–99). Self-reported sleep quality and quantity were highly correlated (p 9 h during night time, respectively (Table 2). Sleeping longer at night was associated with better sleep quality (p
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