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Vitale JA, Lombardi G, Cavaleri L, Graziani R, Schoenhuber H, Torre AL, Banfi G. Rates of insufficiency and deficiency of vitamin D levels in elite professional male and female skiers: A chronobiologic approach. Chronobiol Int 2017; 35:441-449. [PMID: 29231753 DOI: 10.1080/07420528.2017.1410828] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Vitamin D is essential for the maintenance and promotion of musculoskeletal health, for the functioning of the immune, cardiovascular and reproductive systems, and its main action is to keep calcium and phosphate plasmatic physiological concentrations at intestinal, renal and bony level. Vitamin D affects several parameters related to physical performance too and a particularly high percentage of vitamin D insufficiency and deficiency in professional athletes has been observed. Several variables are able to impair the synthesis of 25(OH)D in athletes, specifically both genetic and environmental factors, but the most probable explanation for the deficient/insufficient vitamin D levels is the insufficient ultraviolet B light (UVB) exposure during winter. To confirm this, the existence of a circannual rhythm of vitamin D in professional soccer players, highlighting a peak in summer and lowest values in winter regardless the period of the season, has been documented. Nonetheless, from what we are aware of, no other study adopted a chronobiologic approach to better understand and describe the circannual variations of serum 25(OH)D in other sport disciplines. Therefore, we studied serum vitamin D in a cohort of top-level professional skiers, during a period of three consecutive competitive seasons (2015, 2016 and 2017), in order to evaluate, with a rhythmometric approach, the vitamin D behavior along the year. The study population was composed by 152 professional Italian alpine skiers of FISI (Winter Sport Italian Federation), 63 females and 89 males (mean age: 24.1 ± 3.2 years) and a total of 298 blood drawings were carried out to determine plasma 25(OH)D. Vitamin D data were compared between genders and then processed with the population mean cosinor tests to evaluate the presence of a circannual rhythm, both for female and male athletes. In total, 77 skiers (50.7%) showed, at least once during the three competitive seasons, an insufficient level of 25(OH)D and other 45 subjects (29.6%) showed a deficient status; no differences were observed between genders (mean for females: 26.9 ± 8.1 ng/mL; mean for males: 27.4 ± 7.6 ng/mL). In addition, the rhythmometric analysis highlighted the existence of a significant circannual rhythm for both female and male professional skiers; the acrophases (Φ) occurred in July and both MESOR (M) and amplitude (A) were comparable between the two groups. Our data indicate that, despite the physical effort spent, vitamin D follows a classical season-associated rhythm with a peak in summer and a nadir in winter. Moreover, the percentage of insufficiency and deficiency is in line with that of the general population. In conclusion, our findings reinforce the hypothesis that there is no direct effect of physical activity on vitamin D metabolism and that the factors involved in the determination of vitamin D levels in the general population are valid also for athletes.
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Affiliation(s)
- Jacopo Antonino Vitale
- a Laboratory of Biological Structure Mechanics , IRCCS Istituto Ortopedico Galeazzi , Milano , Italia
| | - Giovanni Lombardi
- b Laboratory of Experimental Biochemistry & Molecular Biology , IRCCS Istituto Ortopedico Galeazzi , Milano , Italia
| | - Luca Cavaleri
- c Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milan , Italia
| | - Rosa Graziani
- d Centro Diagnostico Alto-Lombardo (CEDAL) , Gallarate , Italia
| | - Herbert Schoenhuber
- e Sports Traumatology and Arthroscopic Surgery Unit , IRCCS Istituto Ortopedico Galeazzi , Milano , Italia
| | - Antonio La Torre
- c Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milan , Italia
| | - Giuseppe Banfi
- b Laboratory of Experimental Biochemistry & Molecular Biology , IRCCS Istituto Ortopedico Galeazzi , Milano , Italia.,f Vita-Salute San Raffaele University , Milano , Italia
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152
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Ikedo A, Arimitsu T, Kurihara T, Ebi K, Fujita S. The Effect of Ongoing Vitamin D and Low-Fat Milk Intake on Bone Metabolism in Female High-School Endurance Runners. J Clin Med Res 2017; 10:13-21. [PMID: 29238429 PMCID: PMC5722040 DOI: 10.14740/jocmr3209w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/09/2017] [Indexed: 12/19/2022] Open
Abstract
Background Vitamin D and calcium are essential nutrients for bone health. In addition, vitamin D suppresses inflammatory cytokines and increases bone resorption. Therefore, improvements in bone health by calcium and vitamin D supplementation have the potential to not only improve calcium metabolism but also suppress inflammation associated with exercise training. The purpose of this study was to determine whether ongoing vitamin D supplementation and low-fat milk intake by female high-school endurance runners would improve bone metabolism by suppressing inflammatory cytokines and the parathyroid hormone (PTH). Methods Twenty female high-school runners were assigned to a vitamin D supplement and low-fat milk intake group (MKD) or a control group (CON). Participants in the MKD group consumed a vitamin D supplement (1,000 IU/day) and low-fat milk (Ca 315 mg/day) for 6 months. Bone mineral density measurements, blood samples, and questionnaires (regarding menses and diet) were carried out. The UMIN Clinical Trials Registry number is UMIN000027854. Results The 25-hydroxyvitamin D (25(OH)D) concentration in MKD was sustained and PTH concentration was decreased regardless of the state of menses. The correlation coefficients of 25(OH)D or PTH concentrations and bone metabolism markers were analyzed by partial correlation coefficient via adjusting the model for frequency of menses. CTX and 25(OH)D concentration were significantly and inversely correlated at baseline (r = -0.61, P < 0.01), 3 months (r = -0.54, P = 0.02), and 6 months (r = -0.53, P = 0.02). CTX and PTH were significantly and positively correlated at 3 months (r = 0.63, P < 0.01) and 6 months (r = 0.52, P = 0.02). The bone alkaline phosphatase (BAP)/CTX ratio and 25(OH)D concentration were significantly and positively correlated at 3 months (r = 0.59, P = 0.01) and 6 months (r = 0.56, P = 0.01). The BAP/CTX ratio and PTH were significantly and inversely correlated at 3 months (r = -0.59, P = 0.01) and 6 months (r = -0.58, P < 0.01). Conclusions This study suggested that vitamin D and low-fat milk supplementation improves bone metabolism by sustaining the 25(OH)D concentration and decreasing the PTH concentration in female high-school endurance runners regardless of the state of menses.
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Affiliation(s)
- Aoi Ikedo
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Takuma Arimitsu
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Toshiyuki Kurihara
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Kumiko Ebi
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Satoshi Fujita
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
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153
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Southmayd EA, Hellmers AC, De Souza MJ. Food Versus Pharmacy: Assessment of Nutritional and Pharmacological Strategies to Improve Bone Health in Energy-Deficient Exercising Women. Curr Osteoporos Rep 2017; 15:459-472. [PMID: 28831686 DOI: 10.1007/s11914-017-0393-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE OF REVIEW The review aims to summarize our current knowledge surrounding treatment strategies aimed at recovery of bone mass in energy-deficient women suffering from the Female Athlete Triad. RECENT FINDINGS The independent and interactive contributions of energy status versus estrogen status on bone density, geometry, and strength have recently been reported, highlighting the importance of addressing both energy and estrogen in treatment strategies for bone health. This is supported by reports that have identified energy-related features (low body weight and BMI) and estrogen-related features (late age of menarche, oligo/amenorrhea) to be significant risk factors for low bone mineral density and bone stress injury in female athletes and exercising women. Nutritional therapy is the recommended first line of treatment to recover bone mass in energy-deficient female athletes and exercising women. If nutritional therapy fails after 12 months or if fractures or significant worsening in BMD occurs, pharmacological therapy may be considered in the form of transdermal estradiol with cyclic oral progestin (not COC).
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Affiliation(s)
- Emily A Southmayd
- Women's Health and Exercise Laboratory, Department of Kinesiology, College of Health and Human Development, The Pennsylvania State University, University Park, PA, USA
| | - Adelaide C Hellmers
- Women's Health and Exercise Laboratory, Department of Kinesiology, College of Health and Human Development, The Pennsylvania State University, University Park, PA, USA
| | - Mary Jane De Souza
- Women's Health and Exercise Laboratory, 104 Noll Laboratory, Department of Kinesiology and Physiology, College of Health and Human Development, The Pennsylvania State University, University Park, PA, 16802, USA.
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154
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Bulathsinhala L, Hughes JM, McKinnon CJ, Kardouni JR, Guerriere KI, Popp KL, Matheny RW, Bouxsein ML. Risk of Stress Fracture Varies by Race/Ethnic Origin in a Cohort Study of 1.3 Million US Army Soldiers. J Bone Miner Res 2017; 32:1546-1553. [PMID: 28300324 DOI: 10.1002/jbmr.3131] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 03/08/2017] [Accepted: 03/12/2017] [Indexed: 11/11/2022]
Abstract
Stress fractures (SF) are common and costly injuries in military personnel. Risk for SF has been shown to vary with race/ethnicity. Previous studies report increased SF risk in white and Hispanic Soldiers compared with black Soldiers. However, these studies did not account for the large ethnic diversity in the US military. We aimed to identify differences in SF risk among racial/ethnic groups within the US Army. A retrospective cohort study was conducted using data from the Total Army Injury and Health Outcomes Database from 2001 until 2011. SF diagnoses were identified from ICD-9 codes. We used Cox-proportional hazard models to calculate time to SF by racial/ethnic group after adjusting for age, education, and body mass index. We performed a sex-stratified analysis to determine whether the ethnic variation in SF risk depends on sex. We identified 21,549 SF cases in 1,299,332 Soldiers (more than 5,228,525 person-years of risk), revealing an overall incidence rate of 4.12 per 1000 person-years (7.47 and 2.05 per 1000 person-years in women and men, respectively). Using non-Hispanic blacks as the referent group, non-Hispanic white women had the highest risk of SF, with a 92% higher risk of SF than non-Hispanic black women (1.92 [1.81-2.03]), followed by American Indian/Native Alaskan women (1.72 [1.44-1.79]), Hispanic women (1.65 [1.53-1.79]), and Asian women (1.32 [1.16-1.49]). Similarly, non-Hispanic white men had the highest risk of SF, with a 59% higher risk of SF than non-Hispanic black men (1.59 [1.50-1.68]), followed by Hispanic men (1.19 [1.10-1.29]). When examining the total US Army population, we found substantial differences in the risk of stress fracture among racial/ethnic groups, with non-Hispanic white Soldiers at greatest risk and Hispanic, American Indian/Native Alaskan, and Asian Soldiers at an intermediate risk. Additional studies are needed to determine the factors underlying these race- and ethnic-related differences in stress fracture risk. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Lakmini Bulathsinhala
- Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Julie M Hughes
- Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Craig J McKinnon
- Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Joseph R Kardouni
- Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Katelyn I Guerriere
- Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Kristin L Popp
- Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Ronald W Matheny
- Military Performance Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Mary L Bouxsein
- Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA.,Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Department of Orthopedic Surgery, Harvard Medical School, Boston MA, USA
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155
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Barros A, Karmali S, Rosa B, Gonçalves R. Stress fractures in older athletes: a case report and literature review. Clin Case Rep 2017; 5:849-854. [PMID: 28588824 PMCID: PMC5458004 DOI: 10.1002/ccr3.954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 02/14/2017] [Accepted: 03/16/2017] [Indexed: 12/17/2022] Open
Abstract
The incidence of stress injuries in older athletes is increasing, associated with a more active older population. The same principles apply for its prevention and treatment, but older athletes usually present a more adverse outcome. It is mandatory to raise awareness to this common, but frequently neglected pathology.
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Affiliation(s)
- André Barros
- Hospital de Vila Franca de Xira Vila Franca de Xira Lisboa 2600-009 Portugal
| | - Samir Karmali
- Hospital de Vila Franca de Xira Vila Franca de Xira Lisboa 2600-009 Portugal
| | - Bárbara Rosa
- Hospital de Vila Franca de Xira Vila Franca de Xira Lisboa 2600-009 Portugal
| | - Ricardo Gonçalves
- Orthopaedic Surgery Hospital Privado de Gaia⍛Rua Fernão de Magalhães, n⍛ 2, Fração E Vila Nova de Gaia 4404-501 Portugal
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156
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van Reijen M, Vriend I, van Mechelen W, Finch CF, Verhagen EA. Compliance with Sport Injury Prevention Interventions in Randomised Controlled Trials: A Systematic Review. Sports Med 2017; 46:1125-39. [PMID: 26869058 PMCID: PMC4963451 DOI: 10.1007/s40279-016-0470-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Sport injury prevention studies vary in the way compliance with an intervention is defined, measured and adjusted for. OBJECTIVE The objective of this systematic review was to assess the extent to which sport injury prevention randomised controlled trials (RCTs) have defined, measured and adjusted results for compliance with an injury prevention intervention. METHODS An electronic search was performed in MEDLINE, PubMed, the Cochrane Center of Controlled Trials, CINAHL (Cumulative Index to Nursing and Allied Health Literature), PEDro (Physiotherapy Evidence Database) and SPORTDiscus. English RCTs, quasi-RCTs and cluster-RCTs were considered eligible. Trials that involved physically active individuals or examined the effects of an intervention aimed at the prevention of sport- or physical activity-related injuries were included. RESULTS Of the total of 100 studies included, 71.6 % mentioned compliance or a related term, 68.8 % provided details on compliance measurement and 51.4 % provided compliance data. Only 19.3 % analysed the effect of compliance rates on study outcomes. While studies used heterogeneous methods, pooled effects could not be presented. CONCLUSIONS Studies that account for compliance demonstrated that compliance significant affects study outcomes. The way compliance is dealt with in preventions studies is subject to a large degree of heterogeneity. Valid and reliable tools to measure and report compliance are needed and should be matched to a uniform definition of compliance.
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Affiliation(s)
- Miriam van Reijen
- Department of Public & Occupational Health, EMGO+ Institute, VU University Medical Center, Amsterdam, The Netherlands.,Amsterdam Collaboration on Health & Safety in Sports, IOC Research Center, AMC/VUmc, Amsterdam, The Netherlands
| | - Ingrid Vriend
- Department of Public & Occupational Health, EMGO+ Institute, VU University Medical Center, Amsterdam, The Netherlands.,Amsterdam Collaboration on Health & Safety in Sports, IOC Research Center, AMC/VUmc, Amsterdam, The Netherlands.,Consumer Safety Institute VeiligheidNL, Amsterdam, The Netherlands
| | - Willem van Mechelen
- Department of Public & Occupational Health, EMGO+ Institute, VU University Medical Center, Amsterdam, The Netherlands.,Amsterdam Collaboration on Health & Safety in Sports, IOC Research Center, AMC/VUmc, Amsterdam, The Netherlands.,School of Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Australia.,UCT/MRC Research Unit for Exercise Science and Sports Medicine (ESSM), Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Caroline F Finch
- Australian Centre for Research into Injury in Sport and its Prevention (ACRISP), Federation University Australia, Ballarat, VIC, Australia
| | - Evert A Verhagen
- Department of Public & Occupational Health, EMGO+ Institute, VU University Medical Center, Amsterdam, The Netherlands. .,Amsterdam Collaboration on Health & Safety in Sports, IOC Research Center, AMC/VUmc, Amsterdam, The Netherlands. .,School of Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Australia. .,UCT/MRC Research Unit for Exercise Science and Sports Medicine (ESSM), Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
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157
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Lisman PJ, de la Motte SJ, Gribbin TC, Jaffin DP, Murphy K, Deuster PA. A Systematic Review of the Association Between Physical Fitness and Musculoskeletal Injury Risk: Part 1—Cardiorespiratory Endurance. J Strength Cond Res 2017; 31:1744-1757. [DOI: 10.1519/jsc.0000000000001855] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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158
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Li Z, Liu SY, Xu L, Xu SY, Ni GX. Effects of treadmill running with different intensity on rat subchondral bone. Sci Rep 2017; 7:1977. [PMID: 28512292 PMCID: PMC5434052 DOI: 10.1038/s41598-017-02126-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 04/07/2017] [Indexed: 02/08/2023] Open
Abstract
Subchondral bone (SB) is recognized as a key factor in normal joint protection, not only does it provide a shock absorbing and supportive function for the cartilage, but it may also be important for cartilage metabolism. Mechanical loading is considered to be a critical regulator of skeletal homeostasis, including bone and cartilage. It is suggested that both cartilage and bone may respond to mechanical loading in an intensity-dependent manner. In this report, we have discovered that the subchondral plate became thicker with higher bone mineral density (BMD) and lower porosity, while trabecular bone became more plate-like and denser with higher BMD in high-intensity running (HIR) group. Further, HIR led to highly remodeled, less mineralized, and stiffer subchondral plate and trabecular bone. On the contrary, low-intensity running and moderate-intensity running failed to result in considerable changes in microstructure, composition and hardness. Our findings suggested that running affects SB in an intensity-dependent manner. In addition, HIR may induce change in organization and composition of SB, and consequently alter its mechanical properties. HIR-induced "brittle and stiff" SB may adversely affect the overlying articular cartilage.
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Affiliation(s)
- Zhe Li
- Department of Orthopaedics and Traumatology, Zhengzhou Orthopaedics Hospital, Zhengzhou, China
| | - Sheng-Yao Liu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Nanfang, China
| | - Lei Xu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Nanfang, China
| | - Shao-Yong Xu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Nanfang, China
| | - Guo-Xin Ni
- Department of Rehabilitation Medicine, First Affiliated Hospital, Fujian Medical University, Fujian, China.
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159
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Saunier J, Chapurlat R. Stress fracture in athletes. Joint Bone Spine 2017; 85:307-310. [PMID: 28512006 DOI: 10.1016/j.jbspin.2017.04.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 04/24/2017] [Indexed: 12/20/2022]
Abstract
Stress fractures are widely encountered in sport medicine and rheumatology. Stress fractures result from abnormal and repetitive loading on normal bone that lead to microdamage and then fracture. They occur after sudden increase in physical activity. They appear mostly at lower limbs. Women are at higher risk than men. Patients complain of mechanical pain. Clinical findings include focused pain and sometimes swelling. No biological test is useful for diagnosis. Plain radiographs are normal in early stage disease. MRI is the gold standard to confirm stress fracture. Treatments of stress fracture always involve rest and analgesics. Non-steroidal anti-inflammatory should be use cautiously because they may inhibit callus formation. Extracorporeal shockwave may be a new approach for SF not healing with rest. Surgical treatment is often needed in high risk stress fracture of delayed healing, non-union or complete fracture.
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Affiliation(s)
- Jordane Saunier
- Service de rhumatologie, CHU Edouard-Herriot, 5, place d'Arsonval, 69003 Lyon, France.
| | - Roland Chapurlat
- Service de rhumatologie, CHU Edouard-Herriot, 5, place d'Arsonval, 69003 Lyon, France
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160
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Scheinowitz M, Yanovich R, Sharvit N, Arnon M, Moran DS. Effect of cardiovascular and muscular endurance is not associated with stress fracture incidence in female military recruits: a 12-month follow up study. J Basic Clin Physiol Pharmacol 2017; 28:219-224. [PMID: 28222029 DOI: 10.1515/jbcpp-2015-0098] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 01/13/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Stress fracture (SF) is a common injury among military recruits, especially among women, during the army basic training (ABT). The purpose of this study was to evaluate the effects of health habits and physical activity before recruitment on the fitness level and the incidence of SF during the 4-month ABT. METHODS We screened 226 female recruit volunteers (weight: 60.5±10 kg; height: 163±6 cm) from an integrated combat unit and 124 aged-matched female controls (weight: 57.0±8.3 kg, height 162±7 cm) from a non-combat unit. A self-report questionnaire on their habits pertaining to smoking, physical activity, and orthopedic injuries prior to recruitment were analyzed in relation to the incidences of SF during ABT. RESULTS Aerobic fitness was similar between the two groups. The overall incidence of SFs was 10.2%. Physical training prior to recruitment had no significant effect on the incidence of SF during ABT (11.7% vs. 9.6% in those who trained and did not train before recruitment, respectively) (Odds ratio, OR)=1.24, p=0.236). Nearly 42% of the female recruits smoked regularly, and the incidence of SFs among smokers was 10.5% compared with 9.9% among the non-smokers (OR=1.07, p=0.188). The overall incidence of SFs 12 months after recruitment was 1.78%. The use of contraceptive medication did not affect the incidence of SF: 10.0% among prior-trained vs. 6.4% in non-prior trained (p>0.05) recruits. SFs were not correlated to these variables at the end of the ABT program and 16 months after recruitment. CONCLUSIONS In the present female cohort, physical activity prior to recruitment had no protective effect against SF during or after ABT. The incidence of SFs during the 12-month period after ABT was negligible.
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Affiliation(s)
| | - Ran Yanovich
- Surgeon General's Headquarters, Israel Defense Force, and Department of Military Medicine, Hebrew University, Jerusalem
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161
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Thein-Nissenbaum J, Hammer E. Treatment strategies for the female athlete triad in the adolescent athlete: current perspectives. Open Access J Sports Med 2017; 8:85-95. [PMID: 28435337 PMCID: PMC5388220 DOI: 10.2147/oajsm.s100026] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Since the passage of Title IX in 1972, female sports participation has dramatically increased. The benefits of physical activity, including decreased risk for heart disease and diabetes as well as improved body image and self-esteem, far outweigh the risks. However, a select population of adolescent and young adult females may experience symptoms related to the female athlete triad (Triad), which refers to the interrelatedness of energy availability, menstrual function, and bone mineral density (BMD). These conditions often manifest clinically as disordered eating behaviors, menstrual irregularity, and stress fractures; an individual may suffer from 1 or all of the Triad components simultaneously. Because of the complex nature of the Triad, treatment is challenging and requires a multidisciplinary approach. Team members often include a physician, psychologist or psychiatrist, nutritionist or dietitian, physical therapist, athletic trainer, coach, family members, and most importantly, the patient. A thorough physical examination by a primary care physician is essential to identify all organs/systems that may be impacted by Triad-related conditions. Laboratory tests, assessment of bone density, nutritional assessment, and behavior health evaluation guide the management of the female athlete with Triad-related conditions. Treatment of the Triad includes adequate caloric consumption to restore a positive energy balance; this is often the first step in successful management of the Triad. In addition, determining the cause of menstrual dysfunction (MD) and resumption of menses is very important. Nonpharmacologic interventions are the first choice; pharmacologic treatment for MD is reserved only for those patients with symptoms of estrogen deficiency or infertility. Lastly, adequate intake of calcium and vitamin D is critical for lifelong bone health. For this review, a comprehensive search of relevant databases from the earliest dates to July 2016 was performed. Keywords, including female athlete triad, adolescent female athlete, disordered eating, eating disorder, low energy availability, relative energy deficit, anorexia, bulimia, menstrual dysfunction, amenorrhea, oligoamenorrhea, bone mineral density, osteopenia, osteoporosis, stress fracture, and stress reaction, were utilized to search for relevant articles. Articles that directly addressed assessment and management of any 1 or all of the Triad components were included in this comprehensive review. The purpose of this narrative review is to provide the reader with the latest terms used to define the components of the female athlete triad, to discuss examination and diagnosis of the Triad, and lastly, to provide the reader with the latest evidence to successfully implement a multidisciplinary treatment approach when providing care for the adolescent female athlete who may be suffering from Triad-related components.
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Affiliation(s)
| | - Erin Hammer
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
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162
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Gaffney-Stomberg E, Lutz LJ, Shcherbina A, Ricke DO, Petrovick M, Cropper TL, Cable SJ, McClung JP. Association Between Single Gene Polymorphisms and Bone Biomarkers and Response to Calcium and Vitamin D Supplementation in Young Adults Undergoing Military Training. J Bone Miner Res 2017; 32:498-507. [PMID: 27683185 DOI: 10.1002/jbmr.3008] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 09/12/2016] [Accepted: 09/20/2016] [Indexed: 01/29/2023]
Abstract
Initial military training (IMT) is associated with increased stress fracture risk. In prior studies, supplemental calcium (Ca) and vitamin D provided daily throughout IMT reduced stress fracture incidence, suppressed parathyroid hormone (PTH), and improved measures of bone health compared with placebo. Data were analyzed from a randomized, double-blind, placebo-controlled trial to determine whether single-nucleotide polymorphisms (SNPs) in Ca and vitamin D-related genes were associated with circulating biomarkers of bone metabolism in young adults entering IMT, and whether responses to Ca and vitamin D supplementation were modulated by genotype. Associations between SNPs, including vitamin D receptor (VDR), vitamin D binding protein (DBP), and 1-alpha-hydroxylase (CYP27B1), and circulating biomarkers were measured in fasting blood samples from volunteers (n = 748) starting IMT. Volunteers were block randomized by race and sex to receive Ca (2000 mg) and vitamin D (1000 IU) or placebo daily throughout Army or Air Force IMT (7 to 9 weeks). Total Ca and vitamin D intakes were calculated as the sum of supplemental intake based on intervention compliance and dietary intake. Relationships between SNPs, Ca, and vitamin D intake tertile and change in biomarkers were evaluated in trial completers (n = 391). At baseline, the minor allele of a DBP SNP (rs7041) was positively associated with both 25OHD (B = 4.46, p = 1.97E-10) and 1,25(OH)2 D3 (B = 9.63, p < 0.001). Combined genetic risk score (GRS) for this SNP and a second SNP in the VDR gene (rs1544410) was inversely associated with baseline 25OHD (r = -0.28, p < 0.001) and response to Ca and vitamin D intake differed by GRS (p < 0.05). In addition, presence of the minor allele of a second VDR SNP (rs2228570) was associated with lower P1NP (B = -4.83, p = 0.04) and osteocalcin (B = -0.59, p = 0.03). These data suggest that VDR and DBP SNPs are associated with 25OHD status and bone turnover and those with the highest GRS require the greatest vitamin D intake to improve 25OHD during IMT. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Erin Gaffney-Stomberg
- United States (US) Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Laura J Lutz
- United States (US) Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Anna Shcherbina
- Massachusetts Institute for Technology Lincoln Laboratory, Lexington, MA, USA
| | - Darrell O Ricke
- Massachusetts Institute for Technology Lincoln Laboratory, Lexington, MA, USA
| | - Martha Petrovick
- Massachusetts Institute for Technology Lincoln Laboratory, Lexington, MA, USA
| | | | - Sonya J Cable
- Initial Military Training Center of Excellence, Fort Eustis, VA, USA
| | - James P McClung
- United States (US) Army Research Institute of Environmental Medicine, Natick, MA, USA
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163
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Abstract
PURPOSE OF REVIEW This study aimed to review indications, complications, and outcomes of zone II and III fifth metatarsal fractures based on recent literature. RECENT FINDINGS High rates of nonunion, delayed union, and refracture in athletes treated non-operatively. The standard of care is operative treatment in athletes with intramedullary fixation. Operative treatment of zone II and III fractures in athletes will decrease the risk of nonunion and refracture while leading to an earlier return to play.
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Affiliation(s)
- Michael Le
- Department of Orthopaedics, Carolinas Medical Center, 1000 Blythe Blvd, Charlotte, NC, 28203, USA
| | - Robert Anderson
- OrthoCarolina Foot & Ankle Institute, 2001 Vail Avenue, Suite 200B, Charlotte, NC, 28207, USA.
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164
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Abstract
PURPOSE OF REVIEW Navicular stress fractures are common in athletes and management is debated. This article will review the evaluation and management of navicular stress fractures. RECENT FINDINGS Various operative and non-operative adjunctive treatment modalities are reviewed including the relevance of vitamin D levels, use of shock wave therapy and bone marrow aspirate concentrate (BMAC), and administration of teriparatide. Surgical treatment may be associated with earlier return to sports. The author's preferred treatment algorithm with corresponding images is presented which allows for safe and rapid return to activities in the athletic patient. Future research is needed in evaluating the preventative effects of vitamin D and use of other adjunctive treatments to increase the healing rates of this fracture.
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Affiliation(s)
- Rachel J Shakked
- Rothman Institute, 3300 Tillman Drive, 2nd Floor, Bensalem, PA, 19020-2071, USA.
| | - Emily E Walters
- University of Texas McGovern Medical School, Houston, TX, USA
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165
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High-Risk Stress Fractures: Diagnosis and Management. PM R 2017; 8:S113-24. [PMID: 26972260 DOI: 10.1016/j.pmrj.2015.09.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/22/2015] [Accepted: 09/25/2015] [Indexed: 12/11/2022]
Abstract
Stress fractures are common overuse injuries in athletes. They occur during periods of increased training without adequate rest, disrupting normal bone reparative mechanisms. There are a host of intrinsic and extrinsic factors, including biochemical and biomechanical, that put athletes at risk. In most stress fractures, the diagnosis is primarily clinical, with imaging indicated at times, and management focused on symptom-free relative rest with advancement of activity as tolerated. Overall, stress fractures in athletes have an excellent prognosis for return to sport, with little risk of complication. There is a subset of injuries that have a greater risk of fracture progression, delayed healing, and nonunion and are generally more challenging to treat with nonoperative care. Specific locations of high-risk stress fracture include the femoral neck (tension side), patella, anterior tibia, medial malleolus, talus, tarsal navicular, proximal fifth metatarsal, and great toe sesamoids. These sites share a characteristic region of high tensile load and low blood flow. High-risk stress fractures require a more aggressive approach to evaluation, with imaging often necessary, to confirm early and accurate diagnosis and initiate immediate treatment. Treatment consists of nonweight-bearing immobilization, often with a prolonged period away from sport, and a more methodic and careful reintroduction to athletic activity. These stress fractures may require surgical intervention. A high index of suspicion is essential to avoid delayed diagnosis and optimize outcomes in this subset of stress fractures.
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166
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Abstract
Shin pain is a common complaint in adolescent athletes. The term "shin splints" has historically been applied to these patients. Shin splints, more often than not, refers to a stress reaction of the tibia from overuse. Overuse injuries occur when repetitive microtrauma to the bone exceeds the biologic healing potential. Diagnosis is based on typical history and physical examination findings. Plain radiographs and advanced imaging are rarely necessary but can provide valuable prognostic information. Treatment consists of adequate rest and exercise modification. Time to return to sport depends on injury location and severity. Stress fractures have long-term implications on bone health, so modifiable risk factors should be addressed. It is important for primary care physicians to understand the significance of these injuries. [Pediatr Ann. 2017;46(1):e29-e32.].
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167
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Abstract
CONTEXT The health of the skeletal system is important for athletes young and old. From the early benefits of exercise on bones to the importance of osteoporosis prevention and treatment, bone health affects the ability to be active throughout life. EVIDENCE ACQUISITION PubMed articles dating from 1986 to 2016 were used for the review. Relevant terms such as keywords and section titles of the article were searched and articles identified were reviewed for relevance to this article. STUDY DESIGN Clinical review. LEVEL OF EVIDENCE Levels 1 through 4 evidence included. RESULTS There is strong evidence that exercise benefits bone health at every age and is a critical factor in osteoporosis prevention and treatment. Vitamin D, calcium, and hormones play vital roles in ensuring optimal bone health. When there is an imbalance between exercise and nutrition, as seen in the female athlete triad, bone health is compromised and can lead to bone stress injuries and early osteoporosis. Both of these can lead to morbidity and lost time from training and competition. Thus, early recognition and appropriate treatment of the female athlete triad and other stress fracture risk factors are vital to preventing long-term bone health problems. CONCLUSION To optimize bone health, adequate nutrition, appropriate weightbearing exercise, strength training, and adequate calcium and vitamin D are necessary throughout life.
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168
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Yousaf S, Sugand K, Raza M, Ramesh P. Simultaneous bilateral stress fractures in a homemaker: a case report and literature review. J Am Podiatr Med Assoc 2016; 104:518-21. [PMID: 25275742 DOI: 10.7547/0003-0538-104.5.518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Stress fractures commonly occur in athletes and military cadets due to repetitive stress on the bony cortex. Stress fractures of the tibia are commonly localized proximally and occur during aerobic weightbearing exercises. This is an unusual case of bilateral simultaneous distal tibial stress fracture in a young homemaker.
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Affiliation(s)
- Sohail Yousaf
- Department of Orthopedics, Frimley Park Hospital, Surrey, England
| | - Kapil Sugand
- Department of Orthopedics, Kingston Hospital, Surrey, England
| | - Mushahid Raza
- Department of Emergency Medicine, Frimley Park Hospital, Surrey, England
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169
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Vitamin D3 supplementation in healthy adults: a comparison between capsule and oral spray solution as a method of delivery in a wintertime, randomised, open-label, cross-over study. Br J Nutr 2016; 116:1402-1408. [PMID: 27724992 DOI: 10.1017/s0007114516003470] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Vitamin D is typically supplied in capsule form, both in trials and in clinical practice. However, little is known regarding the efficacy of vitamin D administered via oral sprays - a method that primarily bypasses the gastrointestinal absorption route. This study aimed to compare the efficacy of vitamin D3 liquid capsules and oral spray solution in increasing wintertime total 25-hydroxyvitamin D (25(OH)D) concentrations. In this randomised, open-label, cross-over trial, healthy adults (n 22) received 3000 IU (75 µg) vitamin D3 daily for 4 weeks in either capsule or oral spray form. Following a 10-week washout phase, participants received the opposite treatment for a final 4 weeks. Anthropometrics and fasted blood samples were obtained before and after supplementation, with samples analysed for total 25(OH)D, creatinine, intact parathyroid hormone and adjusted Ca concentrations. At baseline, vitamin D sufficiency (total 25(OH)D>50 nmol/l), insufficiency (31-49 nmol/l) and clinical deficiency (<30 nmol/l) were evident in 59, 23 and 18 % of the participants, respectively. Overall, baseline total mean 25(OH)D concentration averaged 59·76 (sd 29·88) nmol/l, representing clinical sufficiency. ANCOVA revealed no significant difference in the mean and standard deviation change from baseline in total 25(OH)D concentrations between oral spray and capsule supplementation methods (26·15 (sd 17·85) v. 30·38 (sd 17·91) nmol/l, respectively; F=1·044, adjusted r 2 0·493, P=0·313). Oral spray vitamin D3 is an equally effective alternative to capsule supplementation in healthy adults.
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170
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Abstract
Bone stress injuries (BSIs) are common running injuries and may occur at a rate of 20% annually. Both biological and biomechanical risk factors contribute to BSI. Evaluation of a runner with suspected BSI includes completing an appropriate history and physical examination. MRI grading classification for BSI has been proposed and may guide return to play. Management includes activity modification, optimizing nutrition, and addressing risk factors, including the female athlete triad. BSI prevention strategies include screening for risk factors during preparticipation evaluations, optimizing nutrition (including adequate caloric intake, calcium, and vitamin D), and promoting ball sports during childhood and adolescence.
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Affiliation(s)
- Adam S Tenforde
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, Spaulding National Running Center, 1575 Cambridge St., Cambridge, MA 02138, USA
| | - Emily Kraus
- Division of Physical Medicine and Rehabilitation, Department of Orthopaedic Surgery, Stanford University, 450 Broadway Street, MC 6120, Redwood City, CA 94063, USA
| | - Michael Fredericson
- Division of Physical Medicine and Rehabilitation, Department of Orthopaedic Surgery, Stanford University, 450 Broadway Street, Pavilion A, 2nd Floor MC 6120, Redwood City, CA 94063, USA.
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171
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Miller TL, Best TM. Taking a holistic approach to managing difficult stress fractures. J Orthop Surg Res 2016; 11:98. [PMID: 27608681 PMCID: PMC5016928 DOI: 10.1186/s13018-016-0431-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/17/2016] [Indexed: 01/30/2023] Open
Abstract
Stress fractures and other bony stress injuries occur along a spectrum of severity which can impact treatment and prognosis. When treating these injuries, it should be borne in mind that no two stress fractures behave exactly alike. Given that they are not a consistent injury, standardized treatment protocols can be challenging to develop. Treatment should be individualized to the patient or athlete, the causative activity, the anatomical site, and the severity of the injury. A holistic approach to the treatment of the most difficult stress fractures should be taken by orthopedists and sports medicine specialists. This approach is necessary to obtain optimal outcomes, minimize loss of fitness and time away from sports participation, and decrease the risk of recurrence.
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Affiliation(s)
- Timothy L. Miller
- Orthopaedic Surgery and Sports Medicine, The Ohio State University Wexner Medical Center, Columbus, OH USA
- Capital University Athletics, 920 North Hamilton Road, Suite 600, Gahanna, OH 43230 USA
| | - Thomas M. Best
- Academic Affairs, Department of Family Medicine, The Ohio State University Wexner Medical Center, Columbus, OH USA
- Biomedical Engineering, The Ohio State University, Columbus, OH USA
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172
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Hughes JM, Popp KL, Yanovich R, Bouxsein ML, Matheny RW. The role of adaptive bone formation in the etiology of stress fracture. Exp Biol Med (Maywood) 2016; 242:897-906. [PMID: 27496801 DOI: 10.1177/1535370216661646] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Stress fractures are common injuries with load-bearing activities. Stress fractures have been reported in the scientific literature for over a century; however, the etiology continues to be investigated with important distinctions made between the contributions of the tissue-level processes of bone remodeling and modeling. In response to novel repetitive loading, increased bone remodeling may serve to replace fatigue-damaged bone while at the same time creating temporary porosity. Much attention has been given to the role of remodeling in the etiology of stress fracture; however, the role of bone modeling has received less attention. Modest increases in modeling, via bone formation on the periosteal surface of long bones in response to mechanical loading, greatly increases the fatigue resistance of bone. Thus, enhancing this adaptive bone formation is a promising target for stress fracture prevention, and a focus on adaptive bone formation may reveal novel risk factors for stress fracture.
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Affiliation(s)
- Julie M Hughes
- 1 Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
| | - Kristin L Popp
- 2 Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Ran Yanovich
- 3 The Warrior Health Research Institute of Military Physiology, Israel Defense Forces' Medical Corps.,4 Heller Institute of Medical Research, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Mary L Bouxsein
- 2 Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, USA.,5 Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA.,6 Department of Orthopaedic Surgery, Harvard Medical School, Boston, MA 02215, USA
| | - Ronald W Matheny
- 1 Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
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173
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Abstract
Sports-related concussion also referred to in the literature as mild traumatic brain injury remains a popular area of study for physicians, neurologists, neuropsychologists, neuroimaging, athletic trainers, and researchers across the other areas of brain sciences. Treatment for concussion is an emerging area of focus with investigators seeking to improve outcomes and protect patients from the deleterious short-term and long-term consequences which have been extensively studied and identified. Broadly, current treatment strategies for athletes recovering from concussion have remained largely unchanged since early 2000s. Knowledge of the complex pathophysiology surrounding injury should improve or advance our ability to identify processes which may serve as targets for therapeutic intervention. Clinicians working with athletes recovering from sports-related concussion should have an advanced understanding of the injury cascade and also be aware of the current efforts within the research to treat concussion. In addition, how clinicians use the word "treatment" should be carefully defined and promoted so the patient is aware of the level of intervention and what stage of recovery or healing is being affected by a specific intervention. The purpose of this review is to bring together efforts across disciplines of brain science into 1 platform where clinicians can assimilate this information before making best practices decisions regarding the treatment of patients and athletes under their care.
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174
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Zimmermann WO, Helmhout PH, Beutler A. Prevention and treatment of exercise related leg pain in young soldiers; a review of the literature and current practice in the Dutch Armed Forces. J ROY ARMY MED CORPS 2016; 163:94-103. [DOI: 10.1136/jramc-2016-000635] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 05/26/2016] [Accepted: 05/29/2016] [Indexed: 01/28/2023]
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175
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Abstract
Background: Vitamin D plays an important role in several systems of the human body. Various studies have linked vitamin D deficiency to stress and insufficiency fractures, muscle recovery and function, and athletic performance. The prevalence of vitamin D deficiency in the elite athletic population has not been extensively studied, and very few reports exist among professional athletes. Hypothesis: There is a high prevalence of vitamin D deficiency or insufficiency among players attending the National Basketball Association (NBA) Combine. Study Design: Cross-sectional study; Level of evidence, 3. Methods: This is a retrospective review of data previously collected as part of the routine medical evaluation of players in the NBA Combines from 2009 through 2013. Player parameters evaluated were height, weight, body mass index (BMI), and vitamin D level. Statistical analysis using t tests and analysis of variance was used to detect any correlation between the player parameters and vitamin D level. Vitamin D levels were categorized as deficient (<20 ng/mL), insufficient (20-32 ng/mL), and sufficient (>32 ng/mL). Results: After institutional review board approval was submitted to the NBA, the NBA released deidentified data on 279 players who participated in the combines from 2009 through 2013. There were 90 players (32.3%) who were deficient, 131 players (47.0%) who were insufficient, and 58 players (20.8%) who were sufficient. A total of 221 players (79.3%) were either vitamin D deficient or insufficient. Among all players included, the average vitamin D level was 25.6 ± 10.2 ng/mL. Among the players who were deficient, insufficient, and sufficient, the average vitamin D levels were 16.1 ± 2.1 ng/mL, 25.0 ± 3.4 ng/mL, and 41.6 ± 8.6 ng/mL, respectively. Player height and weight were significantly increased in vitamin D–sufficient players compared with players who were not sufficient (P = .0008 and .009, respectively). Player age and BMI did not significantly differ depending on vitamin D status (P = .15 and .77, respectively). Conclusion: There is a high prevalence of vitamin D deficiency or insufficiency among participants in the NBA Combines. As a result, there should be a high suspicion for this metabolic abnormality among elite basketball players. Clinical Relevance: Vitamin D level has been linked to bone health, muscle recovery and function, and athletic performance. Because of the high prevalence of vitamin D deficiency in the NBA Combines, clinicians should maintain a high suspicion for vitamin D abnormalities among elite basketball players.
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176
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Abstract
Stress fractures of the foot and ankle may be more common among athletes than previously reported. A low threshold for investigation is warranted and further imaging may be appropriate if initial radiographs remain inconclusive. Most of these fractures can be treated conservatively with a period of non-weight-bearing mobilization followed by gradual return to activity. Early surgery augmented by bone graft may allow athletes to return to sports earlier. Risk of delayed union, nonunion, and recurrent fracture is high. Many of the patients may also have risk factors for injury that should be modified for a successful outcome.
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Affiliation(s)
- Munier Hossain
- Cardiff Regional Foot and Ankle Unit, University Hospital of Wales, Cardiff CF14 4XW, UK
| | - Juliet Clutton
- Cardiff Regional Foot and Ankle Unit, University Hospital of Wales, Cardiff CF14 4XW, UK
| | - Mark Ridgewell
- Sports Medicine Department, Spire Cardiff Hospital, Croescadarn Road, Cardiff CF23 8XL, UK
| | - Kathleen Lyons
- Sports Medicine Department, Spire Cardiff Hospital, Croescadarn Road, Cardiff CF23 8XL, UK
| | - Anthony Perera
- Cardiff Regional Foot and Ankle Unit, University Hospital of Wales, Cardiff CF14 4XW, UK; Sports Medicine Department, Spire Cardiff Hospital, Croescadarn Road, Cardiff CF23 8XL, UK.
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177
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Pritchett K, Pritchett R, Ogan D, Bishop P, Broad E, LaCroix M. 25(OH)D Status of Elite Athletes with Spinal Cord Injury Relative to Lifestyle Factors. Nutrients 2016; 8:nu8060374. [PMID: 27322316 PMCID: PMC4924215 DOI: 10.3390/nu8060374] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/07/2016] [Accepted: 06/09/2016] [Indexed: 12/17/2022] Open
Abstract
Background: Due to the potential negative impact of low Vitamin D status on performance-related factors and the higher risk of low Vitamin D status in Spinal Cord Injury (SCI) population, research is warranted to determine whether elite athletes with SCI have sufficient 25(OH)D levels. The purposes of this study were to examine: (1) the seasonal proportion of vitamin D insufficiency among elite athletes with SCI; and (2) to determine whether lifestyle factors, SCI lesion level, and muscle performance/function are related to vitamin D status in athletes with SCI. Methods: Thirty-nine members of the Canadian Wheelchair Sports Association, and the US Olympic Committee Paralympic program from outdoor and indoor sports were recruited for this study. Dietary and lifestyle factors, and serum 25(OH)D concentrations were assessed during the autumn (October) and winter (February/March). An independent t-test was used to assess differences in 25(OH)D status among seasons, and indoor and outdoor sports in the autumn and winter, respectively. Results: Mean ± SD serum 25(OH)D concentration was 69.6 ± 19.7 nmol/L (range from 30 to 107.3 nmol/L) and 67.4 ± 25.5 nmol/L (range from 20 to 117.3 nmol/L)in the autumn and winter, respectively. In the autumn, 15.4% of participants were considered vitamin D deficient (25(OH)D < 50 nmol/L) whereas 51.3% had 25(OH)D concentrations that would be considered insufficient (<80 nmol/L). In the winter, 15.4% were deficient while 41% of all participants were considered vitamin D insufficient. Conclusion: A substantial proportion of elite athletes with SCI have insufficient (41%–51%) and deficient (15.4%) 25(OH)D status in the autumn and winter. Furthermore, a seasonal decline in vitamin D status was not observed in the current study.
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Affiliation(s)
- Kelly Pritchett
- Department of Nutrition, Exercise, and Health Sciences, Central Washington University, 400 E. University Way, Ellensburg, WA 98926, USA.
| | - Robert Pritchett
- Department of Nutrition, Exercise, and Health Sciences, Central Washington University, 400 E. University Way, Ellensburg, WA 98926, USA.
| | - Dana Ogan
- Department of Nutrition, Exercise, and Health Sciences, Central Washington University, 400 E. University Way, Ellensburg, WA 98926, USA.
| | - Phil Bishop
- Department of Kinesiology, the University of Alabama, P.O. Box 870312, Tuscaloosa, AL 35487, USA.
| | - Elizabeth Broad
- US Olympic Committee, 2800 Olympic Parkway, Chula Vista, CA 91915, USA.
| | - Melissa LaCroix
- Canadian Sport Institute Pacific, 6111 River Rd, Richmond, BC V7C 0A2, Canada.
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178
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Oliveira MC, Di Ceglie I, Arntz OJ, van den Berg WB, van den Hoogen FHJ, Ferreira AVM, van Lent PLEM, van de Loo FAJ. Milk-Derived Nanoparticle Fraction Promotes the Formation of Small Osteoclasts But Reduces Bone Resorption. J Cell Physiol 2016; 232:225-33. [PMID: 27138291 DOI: 10.1002/jcp.25414] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 04/29/2016] [Indexed: 01/15/2023]
Abstract
The general consensus is that milk promotes bone growth and density because is a source of calcium and contains components that enhance intestinal calcium uptake or directly affect bone metabolism. In this study, we investigated the effect of bovine-derived milk 100,000 g pellet (P100), which contains nanoparticles (<220 nm) including extracellular vesicles, on osteoclast differentiation and bone resorption. Bone marrow-derived osteoclast precursor cells were differentiated into osteoclasts by M-CSF and RANKL (control) and in the presence of milk P100. Milk P100 treatment until day 4 increased the number of TRAP-positive mononuclear cells and small (≤5 nuclei) osteoclasts. The number of large (≥6 nuclei) osteoclasts remained the same. These alterations were associated with increased expression of TRAP, NFATc1, and c-Fos. Cells seeded in a calcium-phosphate coated plate or bone slices showed reduced resorption area when exposed to milk P100 during the differentiation phase and even after osteoclast formation. Interestingly, milk P100 treatment enhanced Cathepsin K expression but reduced Carbonic Anhydrase 2 gene expression. Moreover, intracellular acid production was also decreased by milk P100 treatment. Oral delivery of milk P100 to female DBA1/J mice for 7 weeks did not alter bone area; however, increased osteoclast number and area in tibia without changes in serum RANKL and CTX-I levels. We showed for the first time the effect of milk P100 on osteoclast differentiation both in vitro and in vivo and found that milk P100 increased the formation of small osteoclasts but this does not lead to more bone resorption probably due to reduced acid secretion. J. Cell. Physiol. 232: 225-233, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Marina C Oliveira
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Irene Di Ceglie
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Onno J Arntz
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Wim B van den Berg
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Adaliene V M Ferreira
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Peter L E M van Lent
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Fons A J van de Loo
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.
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179
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Roberts D, Gebhardt DL, Gaskill SE, Roy TC, Sharp MA. Current considerations related to physiological differences between the sexes and physical employment standards. Appl Physiol Nutr Metab 2016; 41:S108-20. [DOI: 10.1139/apnm-2015-0540] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The use of physical employment standards (PES) has helped ensure that workers have the physical attributes necessary to complete their jobs in a safe and efficient manner. However, PES used in the selection processes have not always reflected the critical physical requirements of the job tasks. Women generally have smaller anthropometric stature than men, less muscle mass, and therefore less strength, power, and endurance, particularly in the upper body. Nonetheless, these attributes in themselves are not valid grounds for exclusion from employment in physically demanding occupations. Selection standards based upon size or strength, irrespective of the job requirements, have resulted in the barring of capable women from physically demanding jobs, claims of gender bias, and costly litigations. To ensure all individuals are provided with equal access to employment, accurate characterization of the critical physical requirements of the job is paramount. This paper summarizes the existing research related to disparities between the sexes that contribute to sex differences in job performance in physically demanding occupations including physical and legal factors. Strategies for mitigating these differences in the setting of PES and the meeting of minimum employment standards are discussed. Where available, injury rates for women and men in physically demanding occupations are presented and the etiology considered. Finally, areas for further research are identified.
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Affiliation(s)
- Delia Roberts
- Fellow of the American College of Sports Medicine (FACSM), School of University Arts and Sciences, Selkirk College, 2808 9th Ave., Castlegar, BC VIN 2Z1, Canada
| | - Deborah L. Gebhardt
- Human Performance Systems Inc., 5000 Sunnyside Avenue, Suite 203, Beltsville, MD 20705, USA
| | - Steven E. Gaskill
- Health and Human Performance Department – Exercise Science, The University of Montana, Missoula, MT 59812, USA
| | - Tanja C. Roy
- Epidemiology and Disease Surveillance, US Army Public Health Command, Blackhawk Rd., Aberdeen Proving Ground, MD 21010, USA
| | - Marilyn A. Sharp
- Military Performance Division, US Army Research Institute of Environmental Medicine, 42 General Green Ave., Natick, MA 01760-5007, USA
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Lawrence DW, Sharma B. A review of the neuroprotective role of vitamin D in traumatic brain injury with implications for supplementation post-concussion. Brain Inj 2016; 30:960-8. [DOI: 10.3109/02699052.2016.1147081] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Weaver CM, Gordon CM, Janz KF, Kalkwarf HJ, Lappe JM, Lewis R, O'Karma M, Wallace TC, Zemel BS. The National Osteoporosis Foundation's position statement on peak bone mass development and lifestyle factors: a systematic review and implementation recommendations. Osteoporos Int 2016; 27:1281-1386. [PMID: 26856587 PMCID: PMC4791473 DOI: 10.1007/s00198-015-3440-3] [Citation(s) in RCA: 751] [Impact Index Per Article: 93.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 11/10/2015] [Indexed: 12/21/2022]
Abstract
Lifestyle choices influence 20-40 % of adult peak bone mass. Therefore, optimization of lifestyle factors known to influence peak bone mass and strength is an important strategy aimed at reducing risk of osteoporosis or low bone mass later in life. The National Osteoporosis Foundation has issued this scientific statement to provide evidence-based guidance and a national implementation strategy for the purpose of helping individuals achieve maximal peak bone mass early in life. In this scientific statement, we (1) report the results of an evidence-based review of the literature since 2000 on factors that influence achieving the full genetic potential for skeletal mass; (2) recommend lifestyle choices that promote maximal bone health throughout the lifespan; (3) outline a research agenda to address current gaps; and (4) identify implementation strategies. We conducted a systematic review of the role of individual nutrients, food patterns, special issues, contraceptives, and physical activity on bone mass and strength development in youth. An evidence grading system was applied to describe the strength of available evidence on these individual modifiable lifestyle factors that may (or may not) influence the development of peak bone mass (Table 1). A summary of the grades for each of these factors is given below. We describe the underpinning biology of these relationships as well as other factors for which a systematic review approach was not possible. Articles published since 2000, all of which followed the report by Heaney et al. [1] published in that year, were considered for this scientific statement. This current review is a systematic update of the previous review conducted by the National Osteoporosis Foundation [1]. [Table: see text] Considering the evidence-based literature review, we recommend lifestyle choices that promote maximal bone health from childhood through young to late adolescence and outline a research agenda to address current gaps in knowledge. The best evidence (grade A) is available for positive effects of calcium intake and physical activity, especially during the late childhood and peripubertal years-a critical period for bone accretion. Good evidence is also available for a role of vitamin D and dairy consumption and a detriment of DMPA injections. However, more rigorous trial data on many other lifestyle choices are needed and this need is outlined in our research agenda. Implementation strategies for lifestyle modifications to promote development of peak bone mass and strength within one's genetic potential require a multisectored (i.e., family, schools, healthcare systems) approach.
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Affiliation(s)
- C M Weaver
- Department of Nutritional Sciences, Women's Global Health Institute, Purdue University, 700 W. State Street, West Lafayette, IN, 47907, USA
| | - C M Gordon
- Division of Adolescent and Transition Medicine, Cincinnati Children's Hospital, 3333 Burnet Avenue, MLC 4000, Cincinnati, OH, 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, 3230 Eden Ave, Cincinnati, OH, 45267, USA
| | - K F Janz
- Departments of Health and Human Physiology and Epidemiology, University of Iowa, 130 E FH, Iowa City, IA, 52242, USA
| | - H J Kalkwarf
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7035, Cincinnati, OH, 45229, USA
| | - J M Lappe
- Schools of Nursing and Medicine, Creighton University, 601 N. 30th Street, Omaha, NE, 68131, USA
| | - R Lewis
- Department of Foods and Nutrition, University of Georgia, Dawson Hall, Athens, GA, 30602, USA
| | - M O'Karma
- The Children's Hospital of Philadelphia Research Institute, 3535 Market Street, Room 1560, Philadelphia, PA, 19104, USA
| | - T C Wallace
- Department of Nutrition and Food Studies, George Mason University, MS 1 F8, 10340 Democracy Lane, Fairfax, VA, 22030, USA.
- National Osteoporosis Foundation, 1150 17th Street NW, Suite 850, Washington, DC, 20036, USA.
- National Osteoporosis Foundation, 251 18th Street South, Suite 630, Arlington, VA, 22202, USA.
| | - B S Zemel
- University of Pennsylvania Perelman School of Medicine, 3535 Market Street, Room 1560, Philadelphia, PA, 19104, USA
- Division of Gastroenterology, Hepatology, and Nutrition, The Children's Hospital of Philadelphia, 3535 Market Street, Room 1560, Philadelphia, PA, 19104, USA
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Nieves JW, Ruffing JA, Zion M, Tendy S, Yavorek T, Lindsay R, Cosman F. Eating disorders, menstrual dysfunction, weight change and DMPA use predict bone density change in college-aged women. Bone 2016; 84:113-119. [PMID: 26746778 DOI: 10.1016/j.bone.2015.12.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 12/23/2015] [Accepted: 12/28/2015] [Indexed: 10/22/2022]
Abstract
INTRODUCTION There are limited longitudinal studies that have evaluated bone mineral density (BMD) changes in college-aged women. Our objective was to simultaneously evaluate factors influencing 4-year BMD change. METHODS This was a longitudinal cohort study of healthy, physically active women in the US Military Academy (n=91; average age=18.4years). Assessments over four years included: height, weight, calcium intake, physical fitness, menstrual function (annual number cycles), oral contraceptives (OCs) or depot-medroxyprogesterone acetate (DMPA) use, and eating disorder behavior (Eating Disorder Inventory; (EDI)). BMD was measured annually at the lumbar spine and total hip by dual X-ray absorptiometry and calcaneal BMD by PIXI. Slope of 4year BMD change at each skeletal site (spine total hip and calcaneus) was calculated for each woman. RESULTS BMD gains occurred at the spine in 50% and the hip in 36% of women. In unadjusted analyses, spine bone gain was positively related to menstrual cycle frequency (p=0.04). Spine and hip BMD loss occurred in those using DMPA (p<0.01) and those with the highest EDI quartile scores (p<0.05). BMD change was unrelated to OC use. Hip and calcaneus BMD decreased with weight loss (average 4.8+2.2lb/year) as compared to those with stable weight/weight gain (p<0.05). In multivariable analysis, spine BMD increase was significantly related to African American (AA) race, normal EDI score and normal menses. Hip BMD increase was related to AA race, weight increase and normal menses. DMPA use was associated with spine, hip, and calcaneus bone loss. CONCLUSION On average, BMD may modestly increase in college-aged women, in the absence of risk factors. However, risk factors including subclinical eating disorders, weight loss, menstrual dysfunction and DMPA use can have significant detrimental effects on BMD in young healthy physically active women.
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Affiliation(s)
- Jeri W Nieves
- Clinical Research and Regional Bone Centers, Helen Hayes Hospital, West Haverstraw, NY, USA; Department of Epidemiology, Mailman School of Public Health Columbia University, NY, USA.
| | - Jamie A Ruffing
- Clinical Research and Regional Bone Centers, Helen Hayes Hospital, West Haverstraw, NY, USA; Department of Epidemiology, Mailman School of Public Health Columbia University, NY, USA
| | - Marsha Zion
- Clinical Research and Regional Bone Centers, Helen Hayes Hospital, West Haverstraw, NY, USA
| | - Susan Tendy
- United States Military Academy, West Point, NY, USA
| | | | - Robert Lindsay
- Clinical Research and Regional Bone Centers, Helen Hayes Hospital, West Haverstraw, NY, USA; Department of Medicine, College of Physicians and Surgeons of Columbia University, NY, USA
| | - Felicia Cosman
- Clinical Research and Regional Bone Centers, Helen Hayes Hospital, West Haverstraw, NY, USA; Department of Medicine, College of Physicians and Surgeons of Columbia University, NY, USA
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Davey T, Lanham-New SA, Shaw AM, Hale B, Cobley R, Berry JL, Roch M, Allsopp AJ, Fallowfield JL. Low serum 25-hydroxyvitamin D is associated with increased risk of stress fracture during Royal Marine recruit training. Osteoporos Int 2016; 27:171-9. [PMID: 26159112 DOI: 10.1007/s00198-015-3228-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 06/30/2015] [Indexed: 10/23/2022]
Abstract
UNLABELLED The aim of this study was to investigate vitamin D status and stress fracture risk during Royal Marine military training. Poor vitamin D status was associated with an increased risk of stress fracture. Vitamin D supplementation may help to reduce stress fracture risk in male military recruits with low vitamin D status. INTRODUCTION Stress fracture is a common overuse injury in military recruits, including Royal Marine (RM) training in the UK. RM training is recognised as one of the most arduous basic training programmes in the world. Associations have been reported between serum 25-hydroxyvitamin D (25(OH)D) and risk of stress fracture, but the threshold of 25(OH)D for this effect remains unclear. We aimed to determine if serum 25(OH)D concentrations were associated with stress fracture risk during RM training. METHODS We prospectively followed 1082 RM recruits (males aged 16-32 years) through the 32-week RM training programme. Troops started training between September and July. Height, body weight and aerobic fitness were assessed at week 1. Venous blood samples were drawn at weeks 1, 15 and 32. Serum samples were analysed for 25(OH)D and parathyroid hormone (PTH). RESULTS Seventy-eight recruits (7.2 %) suffered a total of 92 stress fractures. Recruits with a baseline serum 25(OH)D concentration below 50 nmol L(-1) had a higher incidence of stress fracture than recruits with 25(OH)D concentration above this threshold (χ(2) (1) = 3.564, p = 0.042; odds ratio 1.6 (95 % confidence interval (CI) 1.0-2.6)). Baseline serum 25(OH)D varied from 47.0 ± 23.7 nmol L(-1) in February, to 97.3 ± 24.6 nmol L(-1) in July (overall mean 69.2 ± 29.2 nmol L(-1), n = 1016). There were weak inverse correlations between serum 25(OH)D and PTH concentrations at week 15 (r = -0.209, p < 0.001) and week 32 (r = -0.214, p < 0.001), but not at baseline. CONCLUSION Baseline serum 25(OH)D concentration below 50 nmol L(-1) was associated with an increased risk of stress fracture. Further studies into the effects of vitamin D supplementation on stress fracture risk are certainly warranted.
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Affiliation(s)
- T Davey
- Environmental Medicine and Science, Institute of Naval Medicine, Cresent Road, Alverstoke, Gosport, PO12 2DL, UK.
| | - S A Lanham-New
- Department of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - A M Shaw
- Environmental Medicine and Science, Institute of Naval Medicine, Cresent Road, Alverstoke, Gosport, PO12 2DL, UK
| | - B Hale
- University of Chichester, College Lane, Chichester, West Sussex, PO19 6PE, UK
| | - R Cobley
- Environmental Medicine and Science, Institute of Naval Medicine, Cresent Road, Alverstoke, Gosport, PO12 2DL, UK
| | - J L Berry
- Specialist Assay Laboratory, Clinical Biomechemistry, Manchester Royal Infirmary, Manchester, M13 9WL, UK
| | - M Roch
- Clinical Laboratory Services, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2WB, UK
| | - A J Allsopp
- Environmental Medicine and Science, Institute of Naval Medicine, Cresent Road, Alverstoke, Gosport, PO12 2DL, UK
| | - J L Fallowfield
- Environmental Medicine and Science, Institute of Naval Medicine, Cresent Road, Alverstoke, Gosport, PO12 2DL, UK
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Oliveira MC, Arntz OJ, Blaney Davidson EN, van Lent PLEM, Koenders MI, van der Kraan PM, van den Berg WB, Ferreira AVM, van de Loo FAJ. Milk extracellular vesicles accelerate osteoblastogenesis but impair bone matrix formation. J Nutr Biochem 2015; 30:74-84. [PMID: 27012623 DOI: 10.1016/j.jnutbio.2015.11.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Revised: 11/07/2015] [Accepted: 11/20/2015] [Indexed: 01/01/2023]
Abstract
The claimed beneficial effect of milk on bone is still a matter for debate. Recently extracellular vesicles (EVs) that contain proteins and RNA were discovered in milk, but their effect on bone formation has not yet been determined. We demonstrated previously that bovine milk-derived EVs (BMEVs) have immunoregulatory properties. Our aim was to evaluate the effect of BMEVs on osteogenesis by mice and human mesenchymal stem cells (hMSCs). Oral delivery of two concentrations of BMEVs to female DBA/1J mice during 7weeks did not alter the tibia trabecular bone area; however, the osteocytes number increased. In addition, the highest dose of BMEVs markedly increased the woven bone tissue, which is more brittle. The exposure of hMSCs to BMEVs during 21days resulted in less mineralization but higher cell proliferation. Interestingly BMEVs reduced the collagen production, but enhanced the expression of genes characteristic for immature osteoblasts. A kinetic study showed that BMEVs up-regulated many osteogenic genes within the first 4days. However, the production of type I collagen and expression of its genes (COL1A1 and COL1A2) were markedly reduced at days 21 and 28. At day 28, BMEVs again lead to higher proliferation, but mineralization was significantly increased. This was associated with increased expression of sclerostin, a marker for osteocytes, and reduced osteonectin, which is associated to bone matrix formation. Our study adds BMEVs to the list of milk components that can affect bone formation and may shed new light on the contradictory claims of milk on bone formation.
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Affiliation(s)
- Marina C Oliveira
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais Belo Horizonte, Minas Gerais, Brazil
| | - Onno J Arntz
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Peter L E M van Lent
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Marije I Koenders
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Peter M van der Kraan
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Wim B van den Berg
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Adaliene V M Ferreira
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais Belo Horizonte, Minas Gerais, Brazil
| | - Fons A J van de Loo
- Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands.
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Consumption of a calcium and vitamin D-fortified food product does not affect iron status during initial military training: a randomised, double-blind, placebo-controlled trial. Br J Nutr 2015; 115:637-43. [DOI: 10.1017/s0007114515004766] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractCa/vitamin D supplementation maintains bone health and decreases stress fracture risk during initial military training (IMT); however, there is evidence that Ca may negatively affect the absorption of other critical micronutrients, particularly Fe. The objective of this randomised, double-blind, placebo-controlled trial was to determine whether providing 2000 mg/d Ca and 25µg/d vitamin D in a fortified food product during 9 weeks of military training affects Fe status in young adults. Male (n98) and female (n54) volunteers enrolled in US Army basic combat training (BCT) were randomised to receive a snack bar with Ca/vitamin D (n75) or placebo (snack bar without Ca/vitamin D;n77) and were instructed to consume 2 snack bars/d between meals throughout the training course. Circulating ionised Ca was higher (P<0·05) following BCT among those consuming the Ca/vitamin D bars compared with placebo. Fe status declined in both groups over the course of BCT. Transferrin saturation, serum ferritin and Hb were reduced (P<0·05) and soluble transferrin receptor increased (P<0·05) following BCT. There were no differences (P>0·05) in markers of Fe status between placebo and Ca/vitamin D groups. Collectively, these data indicate that Ca/vitamin D supplementation through the use of a fortified food product consumed between meals does not affect Fe status during IMT.
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187
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Bernhard A, Matuk J. Vitamin D in Foot and Ankle Fracture Healing: A Literature Review and Research Design. Foot Ankle Spec 2015; 8:397-405. [PMID: 25964289 DOI: 10.1177/1938640015585958] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
UNLABELLED Vitamin D is a generic name for a group of essential vitamins, or secosteroids, important in calcium homeostasis and bone metabolism. Specifically, efficacy of vitamin D with regard to bone healing is in question. A literature review was performed, finding mostly large studies involving vitamin D effects on prevention of fractures and randomized animal model studies consisting of controlled fractures with vitamin D interventions. The prevention articles generally focus on at-risk populations, including menopausal women and osteoporotic patients, and also most often include calcium in the treatment group. Few studies look at vitamin D specifically. The animal model studies often focus more on vitamin D supplementation; however the results are still largely inconclusive. While recent case reports appear promising, the ambiguity of results on the topic of fracture healing suggests a need for more, higher level research. A novel study design is proposed to help determine the efficacy on vitamin D in fracture healing. LEVELS OF EVIDENCE Therapeutic, Level IV: Systematic Review.
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Affiliation(s)
- Andrew Bernhard
- Kingwood Medical Center, Podiatric Medicine & Surgery Residency with Reconstructive Rearfoot and Ankle Certification, Kingwood, TX
| | - Jorge Matuk
- Kingwood Medical Center, Podiatric Medicine & Surgery Residency with Reconstructive Rearfoot and Ankle Certification, Kingwood, TX
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188
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Miller JR, Dunn KW, Ciliberti LJ, Patel RD, Swanson BA. Association of Vitamin D With Stress Fractures: A Retrospective Cohort Study. J Foot Ankle Surg 2015; 55:117-20. [PMID: 26419854 DOI: 10.1053/j.jfas.2015.08.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Indexed: 02/03/2023]
Abstract
Vitamin D is an essential, fat-soluble nutrient that is a key modulator of bone health. Despite the gaining popularity throughout published medical studies, no consensus has been reached regarding a serum vitamin D level that will guarantee adequate skeletal health in a patient with an increased functional demand. The purpose of the present investigation was to examine the serum concentrations of vitamin D in patients with confirmed stress fractures. A total of 124 patients were included in our retrospective cohort study. Of the 124 patients, 53 had vitamin D levels measured within 3 months of diagnosis. An association was seen in patients with a stress fracture and vitamin D level measured, as 44 (83.02%) of the 53 patients had a serum 25-hydroxyvitamin D level <40 ng/mL. Although an association was seen at our institution in patients with stress fractures and a serum vitamin D concentration <40 ng/mL, a larger and prospective investigation is warranted to further understand the effect of vitamin D level and stress fracture prevention in an active, nonmilitary population.
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Affiliation(s)
- Jason R Miller
- Fellowship Director, Pennsylvania Intensive Lower Extremity Fellowship, Premier Orthopaedics and Sports Medicine, Malvern, PA
| | - Karl W Dunn
- Fellow, Pennsylvania Intensive Lower Extremity Fellowship, Premier Orthopaedics and Sports Medicine, Malvern, PA.
| | - Louis J Ciliberti
- Private Practice, Premier Orthopaedics and Sports Medicine, Malvern, PA
| | - Rikhil D Patel
- Resident, Phoenixville Hospital Podiatric Surgical Residency, Phoenixville, PA
| | - Brock A Swanson
- Resident, Bryn Mawr Hospital Podiatric Surgical Residency, Bryn Mawr, PA
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Dahlquist DT, Dieter BP, Koehle MS. Plausible ergogenic effects of vitamin D on athletic performance and recovery. J Int Soc Sports Nutr 2015; 12:33. [PMID: 26288575 PMCID: PMC4539891 DOI: 10.1186/s12970-015-0093-8] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 08/09/2015] [Indexed: 01/06/2023] Open
Abstract
The purpose of this review is to examine vitamin D in the context of sport nutrition and its potential role in optimizing athletic performance. Vitamin D receptors (VDR) and vitamin D response elements (VDREs) are located in almost every tissue within the human body including skeletal muscle. The hormonally-active form of vitamin D, 1,25-dihydroxyvitamin D, has been shown to play critical roles in the human body and regulates over 900 gene variants. Based on the literature presented, it is plausible that vitamin D levels above the normal reference range (up to 100 nmol/L) might increase skeletal muscle function, decrease recovery time from training, increase both force and power production, and increase testosterone production, each of which could potentiate athletic performance. Therefore, maintaining higher levels of vitamin D could prove beneficial for athletic performance. Despite this situation, large portions of athletic populations are vitamin D deficient. Currently, the research is inconclusive with regards to the optimal intake of vitamin D, the specific forms of vitamin D one should ingest, and the distinct nutrient-nutrient interactions of vitamin D with vitamin K that affect arterial calcification and hypervitaminosis. Furthermore, it is possible that dosages exceeding the recommendations for vitamin D (i.e. dosages up to 4000-5000 IU/day), in combination with 50 to 1000 mcg/day of vitamin K1 and K2 could aid athletic performance. This review will investigate these topics, and specifically their relevance to athletic performance.
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Affiliation(s)
- Dylan T Dahlquist
- UBC Environmental Physiology Laboratory, School of Kinesiology, University of British Columbia, Vancouver, BC Canada
| | - Brad P Dieter
- Providence Medical Research Center, Providence Sacred Heart Medical Center and Children's Hospital, Research Discovery Lab, Spokane, WA 99204 USA
| | - Michael S Koehle
- Simon Fraser University, Biomedical Physiology and Kinesiology (BPK), 8888 University Drive - Burnaby, Vancouver, BC V5A 1S6 Canada
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Dao D, Sodhi S, Tabasinejad R, Peterson D, Ayeni OR, Bhandari M, Farrokhyar F. Serum 25-Hydroxyvitamin D Levels and Stress Fractures in Military Personnel: A Systematic Review and Meta-analysis. Am J Sports Med 2015; 43:2064-72. [PMID: 25371440 DOI: 10.1177/0363546514555971] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Low serum 25-hydroxyvitamin D (25(OH)D) levels have been associated with stress fractures in various physically active populations such as the military. PURPOSE To examine the association between serum 25(OH)D levels and stress fractures in the military. STUDY DESIGN Systematic review and meta-analysis. METHODS Relevant studies were identified through searching multiple databases and manually screening reference lists. Two reviewers independently selected the included studies by applying the eligibility criteria to the title, abstract, and/or full text of the articles yielded in the search. Two reviewers also independently conducted the methodological quality assessment and data extraction. A random-effects model was used to calculate the mean difference (MD) with 95% CI in serum 25(OH)D levels between stress fracture cases and controls. RESULTS Nine observational studies on lower extremity stress fractures were eligible, and 1 was excluded due to inadequate data. A total of 2634 military personnel (age, 18-30 years; 44% male) with 761 cases (16% male) and 1873 controls (61% male) from 8 studies were included in the analysis. Three of the 8 studies measured serum 25(OH)D levels at the time of stress fracture diagnosis, and the 5 remaining studies measured serum 25(OH)D levels at the time of entry into basic training. The mean serum 25(OH)D level was lower in stress fracture cases than in controls at the time of entry into basic training (MD, -2.63 ng/mL; 95% CI, -5.80 to 0.54; P = .10; I(2) = 65%) and at the time of stress fracture diagnosis (MD, -2.26 ng/mL; 95% CI, -3.89 to -0.63; P = .007; I(2) = 42%). CONCLUSION Despite the inherent limitations of the included studies, the study results suggest some association between low serum 25(OH)D levels and lower extremity stress fractures in military personnel. Given the rigorous training of military personnel, implementing strategies to ensure sufficient 25(OH)D levels may be beneficial for reducing the risk of stress fractures.
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Affiliation(s)
- Dyda Dao
- Department of Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
| | - Sukhmani Sodhi
- Department of Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
| | - Rasam Tabasinejad
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Devin Peterson
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada Division of Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Olufemi R Ayeni
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada Division of Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Mohit Bhandari
- Department of Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada Department of Surgery, McMaster University, Hamilton, Ontario, Canada Division of Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Forough Farrokhyar
- Department of Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada Department of Surgery, McMaster University, Hamilton, Ontario, Canada Division of Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada
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Muschitz C, Kocijan R, Stütz V, Kaider A, Muschitz GK, Resch H, Kapiotis S. Vitamin D levels and comorbidities in ambulatory and hospitalized patients in Austria. Wien Klin Wochenschr 2015; 127:675-84. [PMID: 26184408 DOI: 10.1007/s00508-015-0824-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 05/28/2015] [Indexed: 01/15/2023]
Abstract
Vitamin D in its hormonal active form, 1,25-dihydroxyvitamin D (calcitriol), has a major impact on bone turnover by regulating calcium and phosphate homoeostasis. By binding the active vitamin D hormone to the vitamin D receptor (VDR), it acts as a nuclear transcription factor (Bouillon et al., Endocr Rev 29(6):726-776, 2008). The discovery that almost all tissues and cells in the body express the VDR and that several tissues possess the enzymatic capability to convert 25-hydroxyvitamin D (25(OH)-D3; cholecalciferol) to the active form, suggests that vitamin D fulfills various extra-osseous functions (Bouillon et al., Endocr Rev 29(6):726-776, 2008; Holick, N Engl J Med 357(3):266-281, 2007). For example, VDR ensures adequate intestinal calcium absorption by regulating the synthesis of several calcium transport proteins in the duodenum (Bouillon et al., Endocr Rev 29(6):726-776, 2008). Additionally, vitamin D is important for proper muscle function, and some studies suggest it may contribute to prevent type 1 diabetes mellitus, certain autoimmune diseases, hypertension, and several types of cancer (Holick, N Engl J Med 357(3):266-281, 2007).
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Affiliation(s)
- Christian Muschitz
- St. Vincent Hospital, Medical Department II, Academic Teaching Hospital of the Medical University of Vienna, Stumpergasse 13, 1060, Vienna, Austria.
| | - Roland Kocijan
- St. Vincent Hospital, Medical Department II, Academic Teaching Hospital of the Medical University of Vienna, Stumpergasse 13, 1060, Vienna, Austria
| | - Verena Stütz
- Department of Controlling and Medical Statistics, St. Vincent Hospital Vienna, Vienna, Austria
| | - Alexandra Kaider
- Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Gabriela Katharina Muschitz
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Heinrich Resch
- St. Vincent Hospital, Medical Department II, Academic Teaching Hospital of the Medical University of Vienna, Stumpergasse 13, 1060, Vienna, Austria
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Moo IH, Lee YHD, Lim KK, Mehta KV. Bilateral femoral neck stress fractures in military recruits with unilateral hip pain. J ROY ARMY MED CORPS 2015; 162:387-390. [PMID: 26085653 DOI: 10.1136/jramc-2014-000401] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 05/14/2015] [Indexed: 11/04/2022]
Abstract
Femoral neck stress fractures are rare and can be easily missed and failure to diagnose these injuries early can lead to avascular necrosis, malunion and osteoarthritis. It is important to have a high index of suspicion for femoral neck stress fractures in military recruits. We present three cases of bilateral femoral neck fractures in military recruits, all presenting with unilateral hip symptoms and signs. All the asymptomatic contralateral hips had femoral neck stress fractures diagnosed by screening MRI. Tension type and displaced femoral neck fractures were treated surgically. All the fractures managed healing without complications. Military recruits with unilateral groin pain should have an early referral for MRI hip to rule out femoral neck stress fractures and those military personnel with ipsilateral femoral neck fracture should have MRI of the contralateral hip. Two of the patients had vitamin D deficiency, of which one had elevated parathyroid hormones and low bone mineral density. Our case series highlights the significance of vitamin D deficiency among military recruits.
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Affiliation(s)
- Ing How Moo
- Department of Orthopaedics Surgery, Changi General Hospital, Singapore, Singapore
| | - Y H D Lee
- Department of Orthopaedics Surgery, Changi General Hospital, Singapore, Singapore
| | - K K Lim
- Department of Orthopaedics Surgery, Changi General Hospital, Singapore, Singapore
| | - K V Mehta
- Department of Orthopaedics Surgery, Changi General Hospital, Singapore, Singapore
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Krause M, Lehmann D, Amling M, Rolvien T, Frosch KH, Püschel K, Bohndorf K, Meenen NM. Intact bone vitality and increased accumulation of nonmineralized bone matrix in biopsy specimens of juvenile osteochondritis dissecans: a histological analysis. Am J Sports Med 2015; 43:1337-47. [PMID: 25759459 DOI: 10.1177/0363546515572579] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Although commonly proposed to be the starting point of juvenile osteochondritis dissecans (JOCD), avascular osteonecrosis (AVN) has been an inconsistent finding in histological studies. Analysis of early-stage lesions is required to elucidate the origins of OCD and justify proper treatment. PURPOSE To analyze histological sections of JOCD lesions with special emphasis on bone vitality. STUDY DESIGN Cross-sectional study; Level of evidence, 3. METHODS Of 64 patients with 74 JOCD lesions (20 females, mean age, 11.4 years; 44 males, mean age, 12.7 years), 34 required surgery because of lesion instability or failed nonoperative treatment. From 9 patients, 11 histological specimens were obtained. Lesions were classified according to the International Cartilage Repair Society (ICRS). Two additional histological control sections were harvested from children without JOCD manifestation. Undecalcified histological sections were histomorphometrically analyzed. To analyze the skeletal health of the patients, biochemical analyses with special emphasis on bone metabolism were performed. RESULTS Histologically, no osteonecrosis was visible in any of the cases. Osteocyte distribution was similar among OCD lesions and controls. ICRS OCD I lesions (n = 6) showed no intralesional separation. In ICRS OCD II and III lesions (n = 5), there was a subchondral fracture concomitant with histological characteristics of active repair mechanism (increased bone formation: osteoid volume P = .008, osteoblast number P = .046; resorption: osteoclast number P = .005; and tissue fibrosis compared with controls). Instead, in ICRS OCD I lesions, subchondral osteoid volume (P = .010) and osteoblast number (P = .046) were significantly increased compared with controls; however, no active repair mechanisms (no increased bone resorption or fibrous tissue) were detected, suggesting a focal lack of mineralization. Fifty-seven of 64 patients (89.1%) showed a vitamin D deficiency. The median vitamin D serum level of the patients with ICRS OCD I lesions was 13.6 µg/L. CONCLUSION In the present study, osteonecrosis was not found in histological specimens of JOCD. As a secondary finding, focal accumulations of nonmineralized bone matrix indicating a lack of mineralization in ICRS OCD I lesions were revealed. This finding correlated with a low level of vitamin D in the affected children.
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Affiliation(s)
- Matthias Krause
- Department of Trauma and Reconstructive Surgery, Asklepios Clinic St Georg, Hamburg, Germany Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Daniel Lehmann
- Department of Pediatric Sports Medicine, Altona Childrens Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Rolvien
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Karl-Heinz Frosch
- Department of Trauma and Reconstructive Surgery, Asklepios Clinic St Georg, Hamburg, Germany
| | - Klaus Püschel
- Department of Legal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Klaus Bohndorf
- High Field MR Center, Department of Biochemical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Norbert M Meenen
- Department of Trauma and Reconstructive Surgery, Asklepios Clinic St Georg, Hamburg, Germany Department of Pediatric Sports Medicine, Altona Childrens Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Abstract
Stress fractures of the lower extremities are common among the military population and, more specifically, military recruits who partake in basic training. Both intrinsic and extrinsic factors play a role in the development of these injuries, and it is important to identify those individuals at risk early in their military careers. Some of these factors are modifiable, so they may become preventable injuries. It is important to reiterate that one stress fracture places the soldier at risk for future stress fractures; but the first injury should not be reason enough for separation from the military, as literature would support no long-term deficits from properly treated stress fractures. Early in the process, radiographic analysis is typically normal; continued pain may warrant advanced imaging, such as scintigraphy or MRI. Most stress fractures that are caught early are amendable to nonoperative management consisting of a period of immobilization and NWB followed by progressive rehabilitation to preinjury levels. Complete or displaced fractures may require operative intervention as do tension-sided FNSF. Improving dietary and preaccession physical fitness levels may play a role in reducing the incidence of stress fractures in the active-duty military population. It is important to keep in mind when evaluating soldiers and athletes who present with activity-related pain that stress fractures are not uncommon and should be given significant consideration.
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Affiliation(s)
- Jeremy M Jacobs
- Dwight David Eisenhower Army Medical Center, 300 E Hospital Road, Ft Gordon, GA 30905, USA
| | - Kenneth L Cameron
- Keller Army Community Hospital, 900 Washington Road, West Point, New York 10996, USA
| | - John A Bojescul
- Dwight David Eisenhower Army Medical Center, 300 E Hospital Road, Ft Gordon, GA 30905, USA.
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Neal S, Sykes J, Rigby M, Hess B. A review and clinical summary of vitamin D in regard to bone health and athletic performance. PHYSICIAN SPORTSMED 2015; 43:161-8. [PMID: 25797288 DOI: 10.1080/00913847.2015.1020248] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The large amount of scientific literature regarding vitamin D can be overwhelming and confusing. Some organizations have made specific guidelines and recommendations regarding optimal blood levels of vitamin D. In the sports medicine literature, new information about the effects of vitamin D on performance and bone health abound. Most of these articles seem to raise more questions than they answer. Are athletes at increased risk of vitamin D deficiency? Does vitamin D deficiency affect athletic performance? Should athletes be tested for deficiency? What is the optimal goal for vitamin D levels in athletes and is this different from the general population? The goal of this article is to provide clinical insight and clarity, both for those practicing in the primary care setting as well as for those taking care of athletes.
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Affiliation(s)
- Sara Neal
- Cone Health Family Medicine Residency and Primary Care Sports Medicine Fellowship , Greensboro, NC 27401 , USA
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Improving the management of tibia stress fractures: a collaborative, outpatient clinic-based quality improvement project. Orthop Nurs 2015; 33:75-83; quiz 84-5. [PMID: 24651138 DOI: 10.1097/nor.0000000000000032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Implement and evaluate the effectiveness of the Leg Pain Screening and Referral Tool (LPS&RT) for patients presenting with lower extremity leg pain in an outpatient clinic. SAMPLE A total of 46 patients diagnosed with tibia stress fractures. METHODS The study employed a pre-/postintervention design. Retrospective and prospective information was collected from an electronic health record to obtain patient data. The pre- and postintervention groups were compared on the number of patients diagnosed with tibia stress fractures. Provider adherence to the treatments recommended by the algorithm was assessed by chart audits postintervention. RESULTS There was a significant increase (87.5%) in tibia stress fracture diagnosis, from 16 preintervention to 30 postintervention. Provider adherence to the LPS&RT was 93.3% postintervention. Common treatments were activity restriction, oral medication, and/or specialty referrals. CONCLUSION The LPS&RT was an effective, uniform measure to standardize the plan of care for tibia stress fractures in one outpatient clinic.
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ALLISON RICHARDJ, FAROOQ ABDULAZIZ, HAMILTON BRUCE, CLOSE GRAEMEL, WILSON MATHEWG. No Association between Vitamin D Deficiency and Markers of Bone Health in Athletes. Med Sci Sports Exerc 2015; 47:782-8. [DOI: 10.1249/mss.0000000000000457] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Knapik JJ, Reynolds K. Load Carriage-Related Injury Mechanisms, Risk Factors, and Prevention. STUDIES IN MECHANOBIOLOGY, TISSUE ENGINEERING AND BIOMATERIALS 2015. [DOI: 10.1007/8415_2014_182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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McCarthy MS. A Prospective Cluster-Randomized Trial of Telehealth Coaching to Promote Bone Health and Nutrition in Deployed Soldiers. Healthcare (Basel) 2014; 2:505-15. [PMID: 27429290 PMCID: PMC4934572 DOI: 10.3390/healthcare2040505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 12/02/2014] [Accepted: 12/11/2014] [Indexed: 11/16/2022] Open
Abstract
Findings from previous studies suggest that inadequate consumption of calcium and vitamin D and a decrease in exercise while deployed can be detrimental to bone health. This study enrolled 234 soldiers randomized to receive one-time nutrition and exercise education pre-deployment (n = 149), or telehealth coaching (n = 85), throughout the deployment cycle. Results suggest that online educational efforts may enhance sports activity, bone turnover, and vitamin D status. Improving vitamin D status and remaining active while deployed appears to sustain healthy bone density in young soldiers. Early and aggressive educational outreach to young adults may prevent chronic musculoskeletal conditions and disabling osteoporosis later in life.
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Affiliation(s)
- Mary S McCarthy
- Center for Nursing Science and Clinical Inquiry, Madigan Army Medical Center, Tacoma, WA 98431, USA.
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