building bone density-research issues - aquatic therapy bone density-research issues.pdf ·...
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Building Bone Building Bone DensityDensity--Research Research IssuesIssues
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Helping to Regain Bone Helping to Regain Bone DensityDensity
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QUESTION 1QUESTION 1What are the symptoms What are the symptoms
of Osteoporosis?of Osteoporosis?
Who is at risk?Who is at risk?
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SymptomsSymptoms
Bone FracturesBone Fractures
OsteoporosisOsteoporosis1,500,000 fractures a year1,500,000 fractures a yearKyphosis Kyphosis
Loss of height Loss of height ––stooped positionstooped position
300,000 HIP Fractures300,000 HIP Fractures
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OVERVIEWOVERVIEW
Definition and RisksDefinition and RisksDisease Disease –– Fragile BonesFragile BonesOsteoporosis Osteoporosis
Porous bonePorous bone
No symptoms No symptoms FractureFracture
Women 4 timed MenWomen 4 timed Men24,000,000 women24,000,000 women
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OVERVIEWOVERVIEW
Bone Anatomy and PhysiologyBone Anatomy and PhysiologyMuscle supportMuscle supportProtection of OrganProtection of OrganMineral StorageMineral Storage
Cortical Bone Cortical Bone –– Trabecular BoneTrabecular Bone
Bone RemodelingBone Remodeling
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Question 2Question 2What are the key age What are the key age
factors?factors?
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OVERVIEWOVERVIEW
Key Age FactorsKey Age FactorsTeens to 30Teens to 30
30 to 5030 to 50
Older than 50Older than 50Post menopausePost menopause
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OVERVIEWOVERVIEW
Key Age FactorsKey Age FactorsTeens to 30Teens to 30
BuildingBuilding
30 to 5030 to 50Slow lossSlow loss
Older than 50Older than 50Post menopausePost menopause
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OVERVIEWOVERVIEW
Key Age FactorsKey Age FactorsTeens to 30Teens to 30
Weight bearing ExerciseWeight bearing ExerciseCalcium intakeCalcium intakeNO smokingNO smoking
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OVERVIEWOVERVIEW
Key Age FactorsKey Age FactorsAdults 30 Adults 30 –– 5050
Slow lossSlow lossExerciseExerciseNon Non –– smokingsmoking
Idiopathic OsteoporosisIdiopathic OsteoporosisOsteoporosis Int. 2005Osteoporosis Int. 2005Some blood chemical levels lowerSome blood chemical levels lowerWomen and men Women and men
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SmokingSmoking
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Smoking and fracture risk: Smoking and fracture risk: a metaa meta--analysisanalysis
Osteoporosis, Osteoporosis, IntInt, 2005 16 155, 2005 16 155--162162
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SmokingSmoking
Study 59,232 men and women (74% w)Study 59,232 men and women (74% w)Fracture 1.25 smokers to nonFracture 1.25 smokers to non--smokerssmokersFracture 1.13 BMD consideredFracture 1.13 BMD consideredHighest Risk Hip fracture (1.84)Highest Risk Hip fracture (1.84)Higher risk for MenHigher risk for Men
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Effect of age, weight & Effect of age, weight & Lifestyle factors on Lifestyle factors on calcanealcalcanealquantitative ultrasound in quantitative ultrasound in premenopausal womenpremenopausal women
Calif. Tissue Int. (2004) 74(4) 317Calif. Tissue Int. (2004) 74(4) 317--2121
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Effect of age, weight & Lifestyle Effect of age, weight & Lifestyle factorsfactors
Bone Stiffness PositiveBone Stiffness PositiveOutdoor activityOutdoor activity
Bone Stiffness NegativeBone Stiffness Negative# of pregnancies# of pregnanciesChronic use of drugsChronic use of drugsSmokingSmokingSubjective Health StatusSubjective Health Status
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OVERVIEWOVERVIEW
Post menopausePost menopauseBone density screeningBone density screeningExerciseExerciseMedicationsMedications
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Factors that effect Osteoporosis Factors that effect Osteoporosis PotentialPotential
Uncontrollable FactorsUncontrollable FactorsFamily HistoryFamily History
AgeAge
RaceRace
Gender
Controllable Controllable FactorsFactors
ActivityActivity
DietDiet
MedicationMedicationGender
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Lifestyle ChoicesLifestyle Choices
ExerciseExerciseWeight bearingWeight bearing
Body WeightBody Weight“Extreme” weight loss at 50 (>10%)“Extreme” weight loss at 50 (>10%)
SmokingSmoking
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Diet Diet
Calcium & Vitamin DCalcium & Vitamin D1500 mg/day1500 mg/day88--ounce milk 300 mgounce milk 300 mg5 5 –– 15 minutes sunlight15 minutes sunlight
SoySoyOthersOthers
ProteinProteinSodiumSodiumCoffeeCoffee
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Do medications help?Do medications help?
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Drugs Drugs ––Choice? Choice?
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MEDICATIONSMEDICATIONS
AlendronateAlendronate ( Fosamax)( Fosamax)
RaloxifeneRaloxifene ((EvistaEvista))
RisedronateRisedronate Sodium (Sodium (ActinelActinel))
Hormone TherapyHormone Therapy
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MEDICATIONMEDICATIONAlendronateAlendronate ( Fosamax)( Fosamax)
Class of drugs Class of drugs –– bisphosphonatesbisphosphonatesAction Action –– Bone cellsBone cellsTaking FosamaxTaking Fosamax
First thing in morningFirst thing in morningFull glass of waterFull glass of waterupright position Minimum 1/2 hour upright position Minimum 1/2 hour preferably one hourpreferably one hourSame time before first food, beverage, or Same time before first food, beverage, or medication of the day.medication of the day.
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MEDICATION Side Effects MEDICATION Side Effects AlendronateAlendronate ( Fosamax)( Fosamax)
Side effects are uncommonSide effects are uncommon
Abdominal or musculoskeletal pain,Abdominal or musculoskeletal pain,Nausea,Nausea,Heartburn,Heartburn,Irritation of the esophagus. Irritation of the esophagus.
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MEDICATIONMEDICATIONRaloxifeneRaloxifene ((EvistaEvista))
Standard useStandard use
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MEDICATIONMEDICATIONRisedronateRisedronate Sodium (Sodium (ActinelActinel))
Taking Medication:Taking Medication:
First thing in morningFirst thing in morning
Full glass of waterFull glass of water
½ hour before food or beverage½ hour before food or beverage
Remain uprightRemain upright
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MEDICATIONMEDICATIONHormone TherapyHormone Therapy
Higher Risk factorsHigher Risk factors
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DETECTIONDETECTION
Individual FracturesIndividual Fractures
BMDBMD
Duel energy xDuel energy x--ray absorption DEXAray absorption DEXA
Location EffectsLocation Effects
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ResearchResearch
Can detection be done effectively?Can detection be done effectively?
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BMD: The ProblemBMD: The ProblemOsteoporosis Int. 2005 16: 1013Osteoporosis Int. 2005 16: 1013--10151015
Considered the “wrong” measure Considered the “wrong” measure 33--D to a 2D to a 2--D (average Bone mineral/area of D (average Bone mineral/area of bone shadowbone shadow
Bone Mineral Content (BMC) betterBone Mineral Content (BMC) better
Desire for STRENGTHDesire for STRENGTH
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ResearchResearch
Can detection be cheaper?Can detection be cheaper?
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Identifying postmenopausal Identifying postmenopausal women with osteoporosis by women with osteoporosis by calcanealcalcaneal ultrasound, ultrasound, metacarpal digital xmetacarpal digital x--ray ray radiogrammetryradiogrammetry and and phalangealphalangeal radiographic radiographic absorptiometryabsorptiometry: a comparative : a comparative studystudy
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Osteoporosis DetectionOsteoporosis Detection
Quantitative Ultrasound (QUS)Quantitative Ultrasound (QUS)67.5% sensitivity67.5% sensitivity
Digital XDigital X--ray ray radiogrammetryradiogrammetry76.9% sensitivity76.9% sensitivity
PhalangealPhalangeal Radiographic Radiographic absorptimetryabsorptimetry (RA)(RA)82.9% sensitivity82.9% sensitivity
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How else may we work How else may we work against Osteoporosis?against Osteoporosis?(And get a kick out of it)(And get a kick out of it)
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ExerciseExercise
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EXERCISE IEXERCISE I
Effects when youngEffects when young
Effects for Middle ageEffects for Middle age
Effects for postEffects for post--menopausalmenopausal
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Recent ResearchRecent ResearchCan exercise help Can exercise help children’s bone density?children’s bone density?Osteoporosis International (2005)Osteoporosis International (2005)16:122516:1225--12321232
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Diet and exercise during Diet and exercise during growth have sitegrowth have site--specific specific skeletal effects: a coskeletal effects: a co--tiwntiwncontrol studycontrol study
Effects on periEffects on peri--pubertal and postpubertal and post--pubertal pubertal NOT preNOT pre--pubertalpubertal
Hour/week differences in exerciseHour/week differences in exercise1.2% total body Bone Mineral Content (BMC)1.2% total body Bone Mineral Content (BMC)1.4% leg BMC1.4% leg BMC0.5% spine BMC0.5% spine BMC0.1% cortical Thickness0.1% cortical Thickness
Protein intake (1 gram) 0.4% in arm BMCProtein intake (1 gram) 0.4% in arm BMC
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Recent ResearchRecent ResearchCan exercise help the Can exercise help the bone density for bone density for premenopausal women?premenopausal women?
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Effects of highEffects of high--impact impact exercise on bone mineral exercise on bone mineral density: a randomized density: a randomized controlled trail in controlled trail in premenopausal womenpremenopausal women
Osteoporosis, Inc. (2005) 16 191Osteoporosis, Inc. (2005) 16 191--197197
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Effects of Impact exerciseEffects of Impact exercise
Femoral neck and TrochanterFemoral neck and TrochanterNo loss of BMD exerciseNo loss of BMD exercise--1.1% Control group1.1% Control group
MEAN trochanter BMCMEAN trochanter BMCNo loss of BMD exerciseNo loss of BMD exercise--7.7% control group7.7% control group
Fall with fracturesFall with fractures6 Exercise Group6 Exercise Group16 Control Group16 Control Group
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Recent ResearchRecent ResearchCan exercise help elderly Can exercise help elderly woman?woman?
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Effects of impact exercise on Effects of impact exercise on bone mineral density in bone mineral density in elderly women with low BMD: elderly women with low BMD: a populationa population--based based randomized controlled 30randomized controlled 30--month month intervensionintervension
OsterporosisOsterporosis Int. 2006 17: 109Int. 2006 17: 109--118118
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Effects of highEffects of high--impact exercise on impact exercise on bone mineral densitybone mineral density
Femoral neck BMDFemoral neck BMD1.1% versus 1.1% versus --0.4%0.4%
Intertrochanteric BMDIntertrochanteric BMD0.8% versus 0.8% versus --0.2% 0.2%
Total femoral BMDTotal femoral BMD0.1% versus 0.1% versus --0.3%0.3%
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Effects of highEffects of high--impact exercise on impact exercise on bone mineral densitybone mineral density
L1 vertebraL1 vertebra2.2% versus 2.2% versus --0.4%0.4%
Lumbar vertebra L2 Lumbar vertebra L2 –– L4L4No exercise effectsNo exercise effects
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Resent ResearchResent ResearchCan exercise help the spine of Can exercise help the spine of a postmenopausal women a postmenopausal women over a 3 over a 3 –– year period?year period?
The bones are just not the same
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Exercise maintains bone Exercise maintains bone density at spine and hip density at spine and hip EFOPSS: a 3EFOPSS: a 3--year year longitudinal study in early longitudinal study in early postmenopausal womenpostmenopausal women
Osteoporosis Int. 2006 17: 133Osteoporosis Int. 2006 17: 133--142142
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SpineSpine
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Exercise maintains bone density at Exercise maintains bone density at spine and hip spine and hip –– 38 months38 months
DXA lumbar spineDXA lumbar spine0.8% versus 0.8% versus --3.3%3.3%
QCT trabecular boneQCT trabecular bone1.1% versus 1.1% versus --7.7%7.7%
QCT cortical boneQCT cortical bone5.3% versus 5.3% versus --2.6%2.6%
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Exercise maintains bone density at Exercise maintains bone density at spine and hip spine and hip –– 38 months38 months
DXA total hipDXA total hip--0.2% versus 0.2% versus --1.9%1.9%
DXA distal forearmDXA distal forearm--2.8% versus 2.8% versus ––3.8%3.8%
QCT cortical boneQCT cortical bone5.3% versus 5.3% versus --2.6%2.6%
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Exercise maintains bone density at Exercise maintains bone density at spine and hip spine and hip –– 38 months38 months
DXA lumbar spine DXA lumbar spine –– between groupbetween group4.1%4.1%
QCT trabecular boneQCT trabecular bone–– between groupbetween group8.8%8.8%
QCT cortical bone QCT cortical bone –– between groupbetween group7.9%7.9%
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Exercise maintains bone density at Exercise maintains bone density at spine and hip spine and hip –– 38 months38 months
DXA total hip DXA total hip –– between between groupgroup
2.1%2.1%
DXA distal forearm DXA distal forearm –– between between groupgroup
1%1%
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Exercise maintains bone density at Exercise maintains bone density at spine and hip spine and hip –– 38 months38 months
SpineSpinePain frequency and intensity Pain frequency and intensity reducedreduced
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Resent ResearchResent ResearchCan we just exercise at Can we just exercise at home and solve our bone home and solve our bone mass problems?mass problems?
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Predictors of compliance with Predictors of compliance with a homea home--based exercise based exercise program added to usual program added to usual medical care in preventing medical care in preventing postmenopausal postmenopausal osteoporosis: an 18osteoporosis: an 18--month month prospective studyprospective study
Osteoporosis Int. (2005) 16: 325Osteoporosis Int. (2005) 16: 325--331331
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HoneHone--based exercise based exercise programsprograms
18 month compliance rate18 month compliance rate17.8%17.8%
FactorsFactorsContraindication for hormone replacementContraindication for hormone replacement
General physical functionGeneral physical function
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What happens when What happens when the problems are not the problems are not solved?solved?
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Bone ProblemsBone Problems
KyphosisKyphosisSpinal HumpSpinal Hump
Wrist FracturesWrist Fractures
Spinal FracturesSpinal Fractures
Hip FracturesHip Fractures
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Don’t fall Don’t fall –– No fracturesNo fractures
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Fall PreventionFall Prevention
Be careful!Be careful!TimeTimeSurfacesSurfacesContact SurfacesContact Surfaces
ExerciseExercise