Five-Year Surveillance of Vitamin D Levels in NCAA Division I Football Players: Risk Factors for Failed Supplementation

Background: Monitoring vitamin D levels in athletes and determining their response to supplementation in cases of deficiency is thought to be necessary to modulate the risks associated with vitamin D deficiency. Hypothesis/Purpose: To report the results of a 5-year-long surveillance program of vitamin D in the serum of football players on a National Collegiate Athletic Association (NCAA) Division I team and to examine whether factors including age, body mass index (BMI), race, position played, and supplement type would affect the response to 12-month oral vitamin D replacement therapy in athletes with deficiency. We hypothesized that yearly measurements would decrease the proportion of athletes with vitamin D insufficiency over the years and that the aforementioned factors would affect the response to the supplementation therapy. Study Design: Cohort study; Level of evidence, 3. Methods: We measured serum 25(OH)D levels (25-hydroxyvitamin D) in 272 NCAA Division I football players from our institution annually between 2012 and 2017. Athletes with insufficient vitamin D levels (<32 ng/mL) received supplementation with vitamin D3 alone or combined vitamin D3/D2. The percentage of insufficient cases between the first 2 years and last 2 years of the program was compared, and yearly team averages of vitamin D levels were calculated. Associations between player parameters (age, BMI, race, team position, supplement type) and failed supplementation were evaluated. Results: The prevalence of vitamin D insufficiency decreased significantly during the study period, from 55.5% in 2012-2013 to 30.7% in 2016-2017 ( P = .033). The mean 25(OH)D level in 2012 was 36.3 ng/mL, and this increased to 40.5 ng/mL in 2017 ( P < .001); however, this increase was not steady over the study period. Non-Hispanic athletes and quarterbacks had the highest average 25(OH)D levels, and Black players and running backs had the lowest overall levels. There were no significant differences in age, BMI, race, or playing position between athletes with and without failed vitamin D supplementation. Athletes receiving vitamin D3 alone had a more successful rate of conversion (48.15%) than those receiving combined vitamin D3/D2 (22.22%; P = .034). Conclusion: To decrease the prevalence of vitamin D deficiency in football players, serum vitamin D measurements should be performed at least once a year, and oral supplementation therapy should be provided in cases of deficiency. Black players might be at increased risk of vitamin D insufficiency. Oral vitamin D3 may be more effective in restoring vitamin D levels than combined vitamin D3/D2 therapy.

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Effects of Stratified Vitamin D Supplementation in Middle-Aged and Elderly Individuals with Vitamin D Insufficiency

Hormone and Metabolic Research ◽

10.1055/a-0746-5031 ◽

2018 ◽

Vol 50 (10) ◽

pp. 747-753

Author(s):

Yanhui Lu ◽

Xiaomin Fu ◽

Lili Zhang ◽

Minyan Liu ◽

Xiaoling Cheng ◽

...

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Vitamin D3 ◽

Intervention Group ◽

Vitamin D Insufficiency ◽

Vitamin D Supplementation ◽

Control Group ◽

Middle Aged ◽

Oral Vitamin ◽

Severe Vitamin

AbstractThe incidence of vitamin D deficiency is high globally, and vitamin D supplementation draws particular attention. The objective of this study was to investigate the effects of stratified vitamin D supplementation in middle-aged and elderly individuals with vitamin D insufficiency in Beijing. A total of 448 subjects aged over 40 years old were selected from a community in Beijing. Among them, 100 middle-aged and elderly people with vitamin D insufficiency were randomly selected on a voluntary basis. They were further divided into control group and intervention group. The control group received health education and lifestyle guidance, and the intervention group received lifestyle guidance and vitamin D supplementation for nine months. The doses were stratified as follows: for vitamin D insufficiency, oral vitamin D3 supplement was given at 5000 IU/w; for mild vitamin D deficiency, oral vitamin D3 supplement was given at 10 000 IU/w; for severe vitamin D deficiency, oral vitamin D3 supplement was given at 15 000 IU/w. Safety evaluation was conducted after three-month treatment. The intervention group consisted of 8%, 62%, and 30% of cases who had vitamin D insufficiency, mild vitamin D deficiency, and severe vitamin D deficiency, respectively, which were similar with the control group. It showed that the blood 25(OH)D level increased significantly in the intervention group, from 14.30±4.30 ng/ml to 33.62±6.99 ng/ml (p<0.001), in contrast to insignificant change in the control group. Stratified vitamin D supplementation effectively increased the blood 25(OH)D level, as well as the number of cases with corrected vitamin D insufficiency or deficiency.

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Prevalence and Treatment of Vitamin D Deficiency in Young Male Russian Soccer Players in Winter

Nutrients ◽

10.3390/nu11102405 ◽

2019 ◽

Vol 11 (10) ◽

pp. 2405 ◽

Cited By ~ 3

Author(s):

Bezuglov ◽

Tikhonova ◽

Zueva ◽

Khaitin ◽

Waśkiewicz ◽

...

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Serum Vitamin ◽

Young Male ◽

Vitamin D Insufficiency ◽

Soccer Players ◽

Football Players ◽

Duration Of Treatment ◽

Serum Vitamin D ◽

Vitamin D Levels

Vitamin D (25(OH)D) insufficiency and deficiency are highly prevalent in adult soccer players and can exceed 80% even in regions with high insolation; however, the treatment of this condition is often complicated. The aim of the present study was to examine the prevalence of vitamin D insufficiency and deficiency in youth Russian soccer players and the efficacy of its treatment. Participants were 131 young male football players (age 15.6 ± 2.4 years). Low vitamin D levels (below 30 ng/mL) were observed in 42.8% of the analyzed participants. These athletes were split in two groups composed of persons with vitamin D deficiency (serum vitamin D below 21 ng/mL) and insufficiency (serum vitamin D in range of 21–29 ng/mL). A dietary supplement of 5000 IU cholecalciferol per day was administered for two months. After the treatment, an average 92% increase in vitamin D concentration was observed (before treatment—19.7 ± 5.4 ng/mL, after treatment—34.7 ± 8.6 ng/mL, p<0.001) and 74% of the post-treatment values were within the reference range (30–60 ng/mL). Serum concentration of vitamin D increased by 200% ± 98% (p<0.001) during the first month of treatment with vitamin D deficiency and insufficiency being successfully treated in 83% of the football players. In summary, the prevalence of vitamin D insufficiency and deficiency was high in young Russian soccer players. Furthermore, it was indicated that the daily usage of cholecalciferol in a dose 5000 IU was an effective and well-tolerated treatment for vitamin D insufficiency. No linear dependency between the duration of treatment and increase in vitamin 25(OH)D concentration was observed.

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Delayed fracture union in a case of vitamin D dependent rickets associated with pulmonary tuberculosis - a case report

International Journal of Research in Orthopaedics ◽

10.18203/issn.2455-4510.intjresorthop20213390 ◽

2021 ◽

Vol 7 (5) ◽

pp. 1047

Author(s):

Neetin P. Mahajan ◽

Prasanna Kumar G.S. ◽

Tushar C. Patil ◽

Kevin A. Jain

Keyword(s):

Vitamin D ◽

Pulmonary Tuberculosis ◽

Vitamin D Deficiency ◽

Vitamin D3 ◽

Bone Mineralization ◽

Serum Vitamin ◽

Oral Vitamin ◽

Delayed Fracture ◽

Vitamin D Levels ◽

Deficiency Rickets

Rickets is a defect of bone mineralization caused by vitamin D deficiency, seen most significantly at growth plates that result in radiological bony abnormalities like metaphyseal flaring and cupping, physeal widening with focal and generalised osteomalacia. Here we present a rare case of 7 years old male, a case of vitamin D3 deficiency rickets in a known case of multi drug resistant pulmonary tuberculosis. The patient had suffered left proximal fibular fracture following trivial fall 1.5 month back and had delayed bony union leading to difficulty in walking and pain. The patient was treated with oral vitamin D supplementation. In vitamin D deficiency rickets, there is decreased bone mineralization leading to weak bones and delayed fracture healing in children. Low serum vitamin D levels also caused decreased immunity with increased susceptibility to respiratory infections like pulmonary tuberculosis. Appropriate treatment with injectable or oral vitamin D3 with adequate exposure of sunlight and proper nutrition is the best modality of treatment.

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Low Dose Depot Oral Vitamin D3 Versus Daily Oral Vitamin D3 for Treating Nutritional Rickets: A Randomized Clinical Trial

British Journal Of Nutrition ◽

10.1017/s0007114521002713 ◽

2021 ◽

pp. 1-18

Author(s):

Ravneet Kaur Saluja ◽

Pooja Dewan ◽

Sunil Gomber ◽

SV Madhu ◽

Shuchi Bhatt ◽

...

Keyword(s):

Vitamin D ◽

Alkaline Phosphatase ◽

Vitamin D3 ◽

Low Dose ◽

Care Hospital ◽

Oral Vitamin ◽

Nutritional Rickets ◽

Vitamin D Levels ◽

Radiological Healing ◽

25 Oh Vitamin D

Abstract Objective: To compare the efficacy of daily versus low dose depot oral vitamin D3 for treating nutritional rickets. Design: Randomized Controlled Trial Setting: Paediatrics department of a tertiary care hospital catering to semi-urban and rural population in Delhi, India Methods: We randomized 66 children aged 3 months to 5 years with nutritional rickets to receive either daily oral vitamin D3 drops (3-12 months: 2000 IU; >12 months-5y: 4000 IU; n=33) for 12 weeks duration, or a single oral depot dose of vitamin D3 granules (3-12 months: 60,000 IU; >12 months-5y: 150,000 IU; n=33). Results: Participants in both groups had comparable demographic characteristics, laboratory features and radiological severity of rickets. 33 participants in each group received the assigned intervention and all were followed up till 12 weeks. At 12 weeks follow up, children in both groups showed a significant improvement in all biochemical parameters [serum calcium, phosphorus, alkaline phosphatase, parathormone and 25(OH) vitamin D levels] as well as radiological healing. At 12 weeks, the mean (SD) serum 25(OH) vitamin D levels (nmol/L) were statistically comparable in both groups [daily: 120.2 (83.2), depot: 108 (74), P=0.43] and 31 (94%) children in each group had radiological healing (Thacher score <1.5). Two children in each group persisted to have raised alkaline phosphatase and one child each in the daily group continued to have hypocalcemia and hypophosphatemia at 12 weeks. Conclusion: Low dose oral depot vitamin D3 is an effective alternative to daily oral vitamin D3 for nutritional rickets.

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Abstract 121: Vitamin D Deficiency Study in Postural Orthostatic Tachycardia Syndrome

Circulation Cardiovascular Quality and Outcomes ◽

10.1161/circoutcomes.8.suppl_2.121 ◽

2015 ◽

Vol 8 (suppl_2) ◽

Author(s):

Chandralekha Ashangari ◽

Amer Suleman

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Electronic Medical Records ◽

Vitamin D3 ◽

Medical Records ◽

Postural Orthostatic Tachycardia Syndrome ◽

Vitamin D Levels ◽

The World ◽

25 Oh Vitamin D ◽

Vitamin D3 Deficiency

Objectives The aim of this study is to assess vitamin D levels, including the prevalence of vitamin D deficiency/insufficiency in Postural Orthostatic Tachycardia Syndrome (POTS) patients. Background : The Postural Orthostatic Tachycardia Syndrome (POTS) affects primarily young women. POTS is a form of dysautonomia that is estimated to impact between 1,000,000 and 3,000,000 Americans, and millions more around the world. We frequently find vitamin D deficiency in patients who present with POTS Methods: 180 patients were selected randomly from our clinic with POTS. Patients Vitamin D levels charts were reviewed from electronic medical records, 25-OH vitamin D (Vitamin D3 ) status was defined as Normal (>30 ng/mL), Insufficient (20.0-29.9 ng/mL), and deficient (<20 ng/mL). Results: Out of 180 patients, 170 patients are female (94%, n=170, age 31.88±10.36), 10 patients are male (6% ,age 25.83±6.19). 79 patients had vitamin D3 level >30 ng/ml, 10 patients had vitamin D3 level range >20.0 to 29.9 ng/mL, 91 patients had vitamin D3 level < 20ng/mL. Conclusion: Our research results demonstrated that Postural Orthostatic Tachycardia Syndrome (POTS) patients have a higher rate of vitamin D3 deficiency (51% have Vitamin D3 less than 20 ng/mL). Vitamin D3 levels are low in more than half of POTS patients (56% had less than 30 ng/mL )

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