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Prevention of falls and fractures in old people by administration of calcium and vitamin D, randomized clinical trial.

ABSTRACT: There are many studies that associate vitamin D serum levels in older persons with muscle strength, physical performance and risk of fractures and falls. However, current evidence is insufficient to make a general recommendation for administrating calcium and vitamin D to older persons. The objective of this study is to determine the effectiveness of calcium and vitamin D supplementation in improving musculoskeletal function and decreasing the number of falls in person aged over 65 years.Phase III, randomized, double blind, placebo-controlled trial to evaluate the efficacy of already marketed drugs in a new indication. It will be performed at Primary Care doctor visits at several Healthcare Centers in different Spanish Health Areas. A total of 704 non-institutionalized subjects aged 65 years or older will be studied (sample size calculated for a statistical power of 80%, alpha error 0.05, annual incidence of falls 30% and expected reduction of 30% to 20% and expected loss to follow up of 20%). The test drug containing 800 IU of vitamin D and 1000 mg of calcium will be administered daily. The control group will receive a placebo. The subjects will be followed up over two years. The primary variable will be the incidence of spontaneous falls. The secondary variables will include: consequences of the falls (fractures, need for hospitalization), change in calcidiol plasma levels and other analytical determinations (transaminases, PTH, calcium/phosphorous, albumin, creatinine, etc.), change in bone mass by densitometry, change in muscle strength in the dominant hand and change in musculoskeletal strength, risk factors for falls, treatment compliance, adverse effects and socio-demographic data.The following principles have been considered in the development of this Project: the product data are sufficient to ensure that the risks assumed by the study participants are acceptable, the study objectives will probably provide further knowledge on the problem studied and the available information justifies the performance of the study and its possible risk for the participants.If calcium and vitamin D supplementation is effective in the prevention of falls and fractures in the elderly population, a recommendation may be issued with the aim of preventing some of the consequences of falls that affect quality of life and the ensuing personal, health and social costs.ClinicalTrials.gov: NCT01452243

SUBMITTER: Lopez-Torres Hidalgo J

PROVIDER: S-EPMC3267804 | biostudies-literature | 2011 Dec

REPOSITORIES: biostudies-literature

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Prevention of falls and fractures in old people by administration of calcium and vitamin D, randomized clinical trial.

López-Torres Hidalgo Jesús J

BMC public health 20111209

<h4>Background</h4>There are many studies that associate vitamin D serum levels in older persons with muscle strength, physical performance and risk of fractures and falls. However, current evidence is insufficient to make a general recommendation for administrating calcium and vitamin D to older persons. The objective of this study is to determine the effectiveness of calcium and vitamin D supplementation in improving musculoskeletal function and decreasing the number of falls in person aged ov ...[more]

PMID: 22151975

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Project description:ObjectiveTo determine whether falls can be prevented with minimally supervised exercise targeting potentially remediable fall risk factors, i.e., poor balance, reduced leg muscle strength, and freezing of gait, in people with Parkinson disease.MethodsTwo hundred thirty-one people with Parkinson disease were randomized into exercise or usual-care control groups. Exercises were practiced for 40 to 60 minutes, 3 times weekly for 6 months. Primary outcomes were fall rates and proportion of fallers during the intervention period. Secondary outcomes were physical (balance, mobility, freezing of gait, habitual physical activity), psychological (fear of falling, affect), and quality-of-life measures.ResultsThere was no significant difference between groups in the rate of falls (incidence rate ratio [IRR] = 0.73, 95% confidence interval [CI] 0.45-1.17, p = 0.18) or proportion of fallers (p = 0.45). Preplanned subgroup analysis revealed a significant interaction for disease severity (p < 0.001). In the lower disease severity subgroup, there were fewer falls in the exercise group compared with controls (IRR = 0.31, 95% CI 0.15-0.62, p < 0.001), while in the higher disease severity subgroup, there was a trend toward more falls in the exercise group (IRR = 1.61, 95% CI 0.86-3.03, p = 0.13). Postintervention, the exercise group scored significantly (p < 0.05) better than controls on the Short Physical Performance Battery, sit-to-stand, fear of falling, affect, and quality of life, after adjusting for baseline performance.ConclusionsAn exercise program targeting balance, leg strength, and freezing of gait did not reduce falls but improved physical and psychological health. Falls were reduced in people with milder disease but not in those with more severe Parkinson disease.Classification of evidenceThis study provides Class III evidence that for patients with Parkinson disease, a minimally supervised exercise program does not reduce fall risk. This study lacked the precision to exclude a moderate reduction or modest increase in fall risk from exercise.Trial registrationAustralian New Zealand Clinical Trials Registry (ACTRN12608000303347).

Project description:ObjectivesTo evaluate the effects of a home-based disability prevention program on life-space and falls efficacy among low-income older adults.DesignSingle-blind two-arm randomized controlled trial.SettingParticipants' homes.ParticipantsParticipants were low-income cognitively intact older adults (≥65 years old) with restricted daily activities. Our analytic sample for life-space (n = 194) and falls efficacy (n = 233) varied as the life-space measure was introduced 4 months after the trial began.InterventionUp to six 1-hour home visits with an occupational therapist; up to four 1-hour home visits with a registered nurse; and up to $1,300 worth of home repairs, modifications, and assistive devices with a handyman, during a course of 4 months.MeasurementsLife-space was measured by the Homebound Mobility Assessment; falls efficacy was measured using the 10-item Tinetti Falls Efficacy Scale at baseline and 5 months.ResultsParticipants were on average 75 years old, predominantly Black (86%) and female (85%-86%). Compared with participants in the control group, participants receiving the intervention were more likely to have improved versus decreased life-space in areas of bathroom (adjusted odds ratio (OR) = 3.95; 95% confidence interval (CI) = 1.20-12.97), front or back porch, patio, or deck (adjusted OR = 2.67; 95% CI = 1.05-6.79), stairs (adjusted OR = 4.09; 95% CI = 1.34-12.48), leaving the house for any reason other than for health care (adjusted OR = 2.40; 95% CI = 1.01-5.73), and overall life-space (adjusted OR = 2.15; 95% CI = 1.10-4.19). Participants who received the intervention also had an 11% improvement in falls efficacy in performing daily activities (exponentiated coefficient = 1.12; 95% CI = 1.04-1.21).ConclusionLife-space and falls efficacy were improved through a multicomponent, person-directed, home-based disability prevention intervention. Findings suggest that this intervention should be translated into different settings to promote independent aging.

Project description:<p>The VISP trial (PI Jim Toole, M.D., Wake Forest University School of Medicine) was a multi-center, double-blind, randomized, controlled clinical trial that enrolled patients aged 35 or older with Hcy levels above the 25th percentile at screening and a non-disabling cerebral infarction (NDCI) within 120 days of randomization [Toole, 2002]. The trial was designed to determine if daily intake of a multivitamin tablet with high dose folic acid, vitamin B6 and vitamin B12 reduced recurrent cerebral infarction (primary endpoint), and nonfatal myocardial infarction (MI) or mortality (secondary endpoints). Subjects were randomly assigned to receive daily doses of the high-dose formulation (n=1,827), containing 25mg pyridoxine (B6), 0.4mg cobalamin (B12), and 2.5mg folic acid; or the low-dose formulation (n=1,853), containing 200µg pyridoxine, 6 µg cobalamin and 20µg folic acid. Enrollment in VISP began in August 1997, and was completed in December 2001, with 3,680 participants enrolled.</p> <p>Within the trial, 2,164 participants from 46 clinic sites provided DNA and agreed for it to be shared for use in a genetic subset study of VISP. This study is part of the Genomics and Randomized Trials Network (GARNET, <a href="http://www.garnetstudy.org" target="_blank">http://www.garnetstudy.org</a>) funded by the National Human Genome Research Institute (NHGRI). The overarching goal is to identify novel genetic factors that contribute to stroke through large-scale genome-wide association studies of treatment response in randomized clinical trials. Genotyping was performed at the Johns Hopkins University Center for Inherited Disease Research (CIDR). Data cleaning and harmonization were performed at the GARNET Coordinating Center at the University of Washington.</p> <p>The data of the VISP trial will be released to dbGaP users in several segments; the current segment, version 1 (phs000343.v1.p1), consists of n=4 phenotype datasets, and all raw, cleaned and imputed genotype data.</p> <p>Toole, J. F. (2002). Vitamin intervention for stroke prevention. J Neurol Sci, 203-204, 121-4. PMID: <a href="http://www.ncbi.nlm.nih.gov/pubmed/12417369" target="_blank">12417369</a>.</p>

Project description:ObjectiveTo evaluate whether a service to prevent falls in the community would help reduce the rate of falls in older people who call an emergency ambulance when they fall but are not taken to hospital.DesignRandomised controlled trial.SettingCommunity covered by four primary care trusts, England.Participants204 adults aged more than 60 living at home or in residential care who had fallen and called an emergency ambulance but were not taken to hospital.InterventionsReferral to community fall prevention services or standard medical and social care.Main outcome measuresThe primary outcome was the rate of falls over 12 months, ascertained from monthly diaries. Secondary outcomes were scores on the Barthel index, Nottingham extended activities of daily living scale, and falls efficacy scale at baseline and by postal questionnaire at 12 months. Analysis was by intention to treat.Results102 people were allocated to each group. 99 (97%) participants in the intervention group received the intervention. Falls diaries were analysed for 88.6 person years in the intervention group and 84.5 person years in the control group. The incidence rates of falls per year were 3.46 in the intervention group and 7.68 in the control group (incidence rate ratio 0.45, 95% confidence interval 0.35 to 0.58, P<0.001). The intervention group achieved higher scores on the Barthel index and Nottingham extended activities of daily living and lower scores on the falls efficacy scale (all P<0.05) at the 12 month follow-up. The number of times an emergency ambulance was called because of a fall was significantly different during follow-up (incidence rate ratio 0.60, 95% confidence interval 0.40 to 0.92, P=0.018).ConclusionA service to prevent falls in the community reduced the fall rate and improved clinical outcome in the high risk group of older people who call an emergency ambulance after a fall but are not taken to hospital.Trial registrationCurrent Controlled Trials ISRCTN67535605.

Project description:BackgroundEpidemiologic and preclinical data suggest that higher intake and serum levels of vitamin D and higher intake of calcium reduce the risk of colorectal neoplasia. To further study the chemopreventive potential of these nutrients, we conducted a randomized, double-blind, placebo-controlled trial of supplementation with vitamin D, calcium, or both for the prevention of colorectal adenomas.MethodsWe recruited patients with recently diagnosed adenomas and no known colorectal polyps remaining after complete colonoscopy. We randomly assigned 2259 participants to receive daily vitamin D3 (1000 IU), calcium as carbonate (1200 mg), both, or neither in a partial 2×2 factorial design. Women could elect to receive calcium plus random assignment to vitamin D or placebo. Follow-up colonoscopy was anticipated to be performed 3 or 5 years after the baseline examinations, according to the endoscopist's recommendation. The primary end point was adenomas diagnosed in the interval from randomization through the anticipated surveillance colonoscopy.ResultsParticipants who were randomly assigned to receive vitamin D had a mean net increase in serum 25-hydroxyvitamin D levels of 7.83 ng per milliliter, relative to participants given placebo. Overall, 43% of participants had one or more adenomas diagnosed during follow-up. The adjusted risk ratios for recurrent adenomas were 0.99 (95% confidence interval [CI], 0.89 to 1.09) with vitamin D versus no vitamin D, 0.95 (95% CI, 0.85 to 1.06) with calcium versus no calcium, and 0.93 (95% CI, 0.80 to 1.08) with both agents versus neither agent. The findings for advanced adenomas were similar. There were few serious adverse events.ConclusionsDaily supplementation with vitamin D3 (1000 IU), calcium (1200 mg), or both after removal of colorectal adenomas did not significantly reduce the risk of recurrent colorectal adenomas over a period of 3 to 5 years. (Funded by the National Cancer Institute; ClinicalTrials.gov number, NCT00153816.).

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Prevention of falls and fractures in old people by administration of calcium and vitamin D, randomized clinical trial.

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Prevention of falls and fractures in old people by administration of calcium and vitamin D, randomized clinical trial.

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