Influence of weight and seasonal changes on radiogrammetry and bone densitometry

Rico, H.; Revilla, M.; Cardenas, J. L.; Villa, L. F.; Fraile, Eduardo Miguel González; Martín, Francisco Javier Mena; Arribas, Ignacio

doi:10.1007/bf00305524

Cited by 35 publications

(19 citation statements)

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“…Seasonal changes in weight, blood pressure and total cholesterol have been reported in several studies (Rico et al, 1994;Kristal-Boneh et al, 1995;Kristal-Boneh et al, 1994), all showing an increase in the above parameters at winter time. In addition, an increase in total mortality and morbidity from ischemic heart disease and stroke in the winter was documented in many studies, conducted in different countries Bull & Morton, 1975;Bull & Morton, 1978;Grut, 1987;McKee, 1989;Douglas, 1991).…”

mentioning

confidence: 73%

“…The main purpose of this study was to examine to what extent dietary intake can account for the seasonal changes in physiologic parameters observed in previous studies (Rico et al, 1994;Kristal-Boneh et al, 1995;KristalBoneh et al, 1994). Prior studies by our group have shown a signi®cant rise in blood pressure, both systolic and diastolic as well as serum cholesterol and BMI from summer to winter (Kristal-Boneh et al, 1995;Kristal-Boneh et al, 1994).…”

Section: Discussionmentioning

confidence: 97%

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Changes in dietary intake account for seasonal changes in cardiovascular disease risk factors

et al. 1999

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Objectives: (1) to compare dietary intake in summer and winter time; (2) to measure the change in body mass index (BMI), blood pressure and serum cholesterol between winter and summer; and (3) to determine the relationships between seasonal differences in dietary intake and BMI, blood pressure and serum cholesterol measurements. Subjects and methods: Ninety-four male industrial employees were screened twice in one year, in their work place, at winter and summer time. Workers were recruited from two factories and response rate was 95%. Healthrelated variables, including dietary intake, blood pressure and serum cholesterol were evaluated at each season and were compared. Correlation coef®cients between seasonal differences in dietary intake and in BMI, blood pressure and serum cholesterol were calculated. Results: From summer to winter the mean values of BMI increase from 26.1 kgacm 2 to 26.6 (P 0.038), systolic blood pressure from 119.6 to 121.6 (P 0.025), diastolic blood pressure from 75.2 to 77.2 mmHg (P 0.001), total cholesterol from 200.8 to 208.6 mgadL (P 0.001), LDL cholesterol from 125.2 to 134.9 (P 0.001) and HDL cholesterol from 42.7 to 44.3 (P 0.0084). Triglycerides levels decrease from 174 to 145 in the winter (P 0.03). Mean dietary intake of fat increases from 99.1 to 106.0 (P 0.0016), saturated fat from 43.6 to 46.3 (P 0.0137), polyunsaturated fat from 25.1 to 28.3 (P 0.0002), cholesterol from 462.0 to 497.9 (P 0.0313), sodium from 5778.5 to 8208.2 (P 0.0035), zinc from 11.6 to 12.3 (P 0.0001), vitamin B 1 from 1.4 to 1.5 (P 0.002), vitamin D from 4.3 to 4.9 (P 0.0323) and vitamin E from 11.2 to 12.7 (P 0.0073). Signi®cant correlation was shown between the seasonal increase in saturated fat and the increase in BMI (r 0.37), total cholesterol (r 0.21) and LDL cholesterol (r 0.29). Seasonal change in dietary cholesterol intake was signi®cantly and positively correlated with serum total cholesterol (r 0.24) and LDL cholesterol (r 0.24). Blood pressure was not associated with nutritional intake variables. Conclusions: Dietary intake in summer and winter is different as well as blood pressure, BMI and serum cholesterol. The seasonal increase in fat and cholesterol intake at winter time is associated with changes in BMI and serum cholesterol.

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confidence: 73%

Section: Discussionmentioning

confidence: 97%

Changes in dietary intake account for seasonal changes in cardiovascular disease risk factors

et al. 1999

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“…Krolner [9] found an increase of 1.7% in lumbar spine BMC between January/ March and July/September in 26 normal women aged 19-66 years. Bergstralh et al [10] reported a seasonal effect of 1.4% in lumbar spine BMD measured in 65 healthy, postmenopausal white women aged 48-65 years, while Rico et al [11] found statistically significant changes in total body and regional BMC measured in 30 healthy premenopausal women (mean age 33 Ô 5 years). Amongst studies in older subjects, Dawson-Hughes et al [13] reported peak to trough seasonal changes of 1.3% in lumbar spine BMD and 0.6% in total body BMD in the placebo arm of a 1-year trial of vitamin D supplementation in 276 postmenopausal women with a mean age of 62 years.…”

Section: Discussionmentioning

confidence: 97%

“…As the main source of vitamin D is endogenous production due to exposure to solar ultraviolet (UV) radiation, there is a large seasonal variation in serum 25-OHD concentration, the circulating form of vitamin D. On the basis of the known effects of serum 25-OHD concentration on bone turnover [2,3], several studies have investigated whether associated seasonal changes in BMD (higher in summer and autumn, lower in winter and spring) can be detected [8][9][10][11][12][13][14][15]. Evidence for statistically significant seasonal changes in BMD or bone mineral content (BMC) has been reported in healthy pre-and postmenopausal women [8][9][10][11][12], as well as in more elderly women [13,14]. However, other studies have found no seasonal variation in BMD [15].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Season and Vitamin D Supplementation on Bone Mineral Density in Healthy Women: A Double-Masked Crossover Study

et al. 2001

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Vitamin D status is known to be an important determinant of bone mineral density (BMD). There is a significant seasonal variation in serum vitamin D, and some studies have reported an associated seasonal variation in BMD. The present study was devised to investigate whether a seasonal variation in BMD could be detected in healthy normal subjects, along with associated variations in serum parathyroid hormone (PTH), intestinal calcium absorption and biochemical markers of bone turnover. A second aim was to investigate whether, if such variations were identified, they could be suppressed by vitamin D supplementation. The subjects were 70 healthy female volunteers (mean age 47.2 years, range 24-70 years) recruited into a double-masked crossover study and followed over 2 years. During the first year 35 subjects received a daily oral supplement containing 800 IU (20 micrograms) cholecalciferol (group 1) and 35 subjects received a placebo preparation (group 2). During the second year the treatment each group received was reversed. Lumbar spine (L1-L4), left proximal femur and total body BMD were measured by DXA at 3-month intervals. Serum 25-hydroxyvitamin D (25-OHD), serum PTH, bone markers (bone-specific ALP (BSAP) and urinary crosslinks (DYPD/creatinine)) and calcium absorption were also measured at each visit. Cholecalciferol treatment increased serum 25-OHD by 25.4 nmol/l (p < 0.001), while a reciprocal decrease in serum PTH of 6.6 ng/l (p = 0.011) was seen in subjects in the lowest quartile of baseline serum 25-OHD. The treatment had no significant effect on spine, femur or total body BMD, calcium absorption or bone markers. When Fourier analysis was used to analyze the data for seasonal effect (defined as twice the amplitude of the 1-year period variation) a highly significant effect for 25-OHD of 18 nmol/l (p < 0.001) was found. However, no effect was found for BMD, PTH, calcium absorption or bone markers. The analysis set a 95% confidence limit to the seasonal effect of less than 0.6% for spine, total hip and total body BMD. It was concluded that in the population of healthy women studied there was no evidence of seasonal variation in spine, femur or total body BMD, serum PTH, calcium absorption or bone markers. Vitamin D supplementation was found to have no effect on BMD.

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“…In men and women, weight correlates significantly with bone mass [19,20], so bone mass should be corrected for weight to determine real changes [21]. In our study, TBBMC/W was significantly lower in patients than in controls (P < 0.001) and correlated negatively with alkaline phosphatase and TRAP.…”

Section: Discussionmentioning

confidence: 88%

Total and regional bone mass and biochemical markers of bone remodeling in metastatic prostate cancer

et al. 1998

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Influence of weight and seasonal changes on radiogrammetry and bone densitometry

Cited by 35 publications

References 19 publications

Changes in dietary intake account for seasonal changes in cardiovascular disease risk factors

Changes in dietary intake account for seasonal changes in cardiovascular disease risk factors

The Effect of Season and Vitamin D Supplementation on Bone Mineral Density in Healthy Women: A Double-Masked Crossover Study

Total and regional bone mass and biochemical markers of bone remodeling in metastatic prostate cancer

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