AnalysisofExercisewithBigDataBrendonJosephson,JakePortanova,YuanJiang

FacultyAdvisors:IanDuncan,JanetDuncan;StatisticalAdvisor:WadeHerndonDept.ofStatisticsandAppliedProbability,UniversityofCaliforniaSantaBarbara

v Datav Datafrom2012-2015(Source:Vitality)v Longitudinaldatasetconsistingofpeoplewho

consistentlyreporteddatatotheVitalityprogrambetween2013and2015

v 8,519observationsv Variables

v EightHealthrelatedoutcomevariablesv BodyMassIndex(BMI)v Glucosev HighDensityLipoproteins (HDL)v LowDensityLipoproteins (LDL)v TotalCholesterol (TC)v Triglyceridesv SBPv DBP

v VerifiedWorkoutMetricsv LightVerifiedWorkouts (LVW):15minat60%maxheart

ratev StandardVerifiedWorkouts (SVW):30minat60%max

heartratev TotalVerifiedWorkouts (TVW)=LVW+SVW

v Changevariablescreatedforeachoftheresponsevariablesandworkout categories

v Modelsv Selection/ExploratoryAnalysis

v ANOVAtestswereusedtodecidewhichresponsevariablesaremostsignificantlycorrelatedwithhealth

v Collinearity:CheckedthecorrelationbetweenLVWandSVWtopreventinaccuratefinalmodels

v Establishedwhatbaselinedatawasrelevanttothemodel

v FinalModelsv UsedlinearmodelsinRtopredictthechangeinour

LVW,SVW,andTVWtothechangeinoureightresponsevariables

v Created72modelsv (8responsevariables)x(3years)x(3workout

types)

Methods

v Motivationv ForsubstantialhealthbenefitsTheOfficeofDisease

PreventionandHealthPromotion (ODPHP)recommends1v 150minutesofmoderate-intensityphysicalactivityv 75minutesofvigorous-intensityphysicalactivity

v UniversityofKansasstudyonexerciseandweightlossconcluded2:

v Aerobicexercisealoneresultsinclinicallysignificantweightlossforbothmenandwomen

v ThereisnostatisticallysignificantdifferenceinBMIreductionbetween400calorieworkouts and600calorieworkouts

v 11.1%ofUShealthcareexpenditurehasbeenassociatedwith inadequatephysicalactivity3

v StudyGoalsv ExaminetheeffectsofchangesinFitBit verifieddata(light

andstandardworkouts) onchangesinhealthoutcomesv Exploretheeffectofchangingworkouthabitsdepending

onpreviousworkout habitsv Analyzetheeffectsofprovidingaworkout incentive

program(i.e.Vitality)

v IncreasingtheamountofverifiedworkoutscausesfavorableoutcomesforBMI,triglycerides,andtotalcholesterol,butnototherhealthmeasures.

v FavorablehealtheffectsareattributedtoanincreaseinSVWs,whilethereislittleevidencethatLVWshaveanyimpact.v TVWarehighlycorrelatedwithSVWbutnotLVW.

v HDLisonlysignificantinthetwoyearstudyhintingtowardsthefactthata changeinHDLmayrequirelongtermchangestoone’sphysicalactivityhabits.

v USDepartmentofHealthandHumanServices.2008physicalactivityguidelines forAmericans.2008.

v Kokkinos, Peter.“PhysicalActivity,HealthBenefits,andMortalityRisk.” ISRNCardiology 2012(2012):718789. PMC.Web.1Mar.2016.

v Donnelly, JosephE.etal.“AerobicExerciseAloneResultsinClinicallySignificantWeightLossforMenandWomen:MidwestExerciseTrial-2.”Obesity(SilverSpring,Md.) 21.3(2013):E219–E228. PMC.Web.1Mar.2016.

v SummaryStatisticsv MeanVerifiedWorkouts byCategory

v MeanandStandardDeviationoftheChangeVariables

v VariableRelationshipsv PhysicalActivityStratifiedbyGender

v Model

v TheRegressionresultsweremostmostsignificantinBMIandTriglycerides(resultsintablebelow)

v CoefficientsforImprovementinTVWthroughoutthestudy

v T-TestsforIncrease/DecreaseinImprovement

Introduction

Discussion/Conclusion

WorksCited[Selected]

Results

2013-2014 2014-2015 2013-2015Mean SD Mean SD Mean SD

BMI 0.00 1.93 0.00 2.00 0.00 2.34HDL 0.02 0.28 0.02 0.28 0.03 0.27TC 0.01 0.68 0.02 0.66 0.02 0.84TRI 0.02 0.74 0.03 0.72 0.03 0.82LVW 0.00 4.11 0.00 3.95 0.00 2.75SVW 0.00 5.40 0.00 4.93 0.00 3.47TVW 0.00 6.99 0.00 6.29 0.00 4.40

Age 18-25(172) 26-50(5311) 50+(2613) Total

YearM(73)

F(99)

M(2465)

F(2946)

M(1033)

F(1580) (8519)

LVW2013 1.46 1.23 1.99 2.46 2.37 2.95 2.402014 2.93 2.49 3.38 4.00 3.56 4.34 3.812015 4.03 3.59 4.22 4.84 4.13 5.05 4.61

SVW2013 4.38 2.70 5.32 4.13 6.21 4.47 4.822014 6.38 4.00 7.43 5.51 8.38 5.79 6.522015 7.76 5.10 8.52 6.30 9.53 6.58 7.45

TVW SVW LVW

Year 13-14 14-15 13-15 13-14 14-15 13-15 13-14 14-15 13-15

BMI

TC

HDL

TRI

BMIandTRIRegressionOutputBMIChange TRIChange

Coef Lower Upper Coef Lower UpperConstant 2.12 1.87 2.36 0.46 0.43 0.50BMI(2013) -0.06 -0.07 -0.05 0.00TRI(2013) -0.30 -0.31 -0.28TVW(2013) 0.04 -0.03 0.10 -0.01 -0.03 0.02

TVWImprove -0.27 -0.34 -0.20 -0.06 -0.08 -0.03

Note:redvaluesaresignificant

2013-2014 2014-2015 2013-2015

HDL 0.001 0.002 0.009

TC -0.030 -0.039 -0.056Note:redvaluesaresignificant