Presentation on theme: "Body Composition BODY COMPOSITION IS A Combination of muscle, bone, and fat. Lean body mass — muscle and other non-fat tissue Body fat — stored calories."— Presentation transcript:
1 Body CompositionBODY COMPOSITION IS A Combination of muscle, bone, and fat.Lean body mass — muscle and other non-fat tissueBody fat — stored calories
5 Ectomorph Characteristics Small bonesThin musclesSlender arms and legsNarrow chestRound shouldersFlat abdomenSmall buttocks
6 firm, well developed muscles large bonesmuscular armstrim waistmuscular buttockspowerful legsBroad shouldershigh percentage of body fatshort necklarge abdomenwide hipsround, full buttocksshort, heavy legsSmall bonesThin musclesSlender arms and legsNarrow chestRound shouldersFlat abdomenSmall buttocks
7 Overweight vs. ObesityOverweight — exceed desirable body weight by 10% according to height weight charts.Obese — excessive amount of body fatIdeal body weight — amount you would weigh with appropriate level of body fatYOU CAN BE OBESE WITHOUT BEING OVERWEIGHT
8 WEIGHT CONTROL IS A MAJOR HEALTH PROBLEM IN US It is estimated that 34 million adults are obese. Excess body fat has been linked to high bloodPressure, heart disease, diabetes, arthritis, and certain forms of cancer. For these reasons, weall need to be concerned about our weight.
9 BODY MASS INDEXBody Mass Index (BMI) is an estimate of total body fat based on your height and weight.BMI does not account for body composition or fat distribution.BMI is most valuable for evaluating degree’s of obesity.BMI may overestimate body fat in athletes or others with a muscular built or large body frame.BMI in the healthy range does not necessarily mean that you are fit and healthy.BMI is only one factor in determining a person’s health risk.
10 According to Height and Weight Charts This person is overweight.This person is normal.
11 Formula for calculating BMI Government Medical Guidelines established Underweight=<18.5Normal Weight=Overweight=Obesity= BMI of 30 or greaterThe BMI is determined by dividing the body weight in kilograms by the height measured to the nearest meter squared.
12 Calculate Your BMICalculate your weight in kilograms by dividing your weight inpounds by 2.2:(________) ÷ = _______weight in kilogramsWeight in lbsCalculate your height in meters by multiplying your height in inches by 2.54 and divide by 100:___________ x ÷ 100 = _______ height in metersheight in inchesSquare your height in meters:_______ X ______ = height square height in meters height in metersBMI = Weight in Kilograms = __________Height in Meters 2
13 HEALTH RISK OF TOO MUCH BODY FAT Heart DiseaseDiabetesStrokeHypertension (high BP)Some CancersSleep Apnea (pauses in breathing)Social discriminationKidney disordersSurgical riskLess resistant to infectionsProblem during pregnancyShortened life expectancy
14 FAT IS IMPORTANT BECAUSE…… Bone densityProtects vital organs/bonesStores energyInsulation / warmthProduction of estrogen (Menstrual cycle)Too little body fat is a health risk.
15 MenstruationPhysically active females, particularly athletes who have a low percentage of body fat:Have increased risk of delayed onset menstruationHave increased risk of irregular menstrual cycleMay have complete cessation of mensesCritical levels: about 17% for onset of menstruation and about 22% to maintain normal cycles.Levels change from person to person
16 Ideal % Body Fat Healthy Fitness Zone Males 7%-25% Females 13%-32% AGEMALESFEMALESUP TO 309-15%14-21%30-5011-17%15-23%50 & Up12-19%16-25%Healthy Fitness ZoneMales 7%-25%Females 13%-32%Text Book StandardsLooking Good Feeling GoodFITNESSGRAM
17 METHODS TO MEASURE BODY FAT skin foldmeasurementsAnalysis by electrical impedanceMeasurement of body circumferenceUnder water weighing
18 ELECTRICAL IMPEDANCEMuscle, tendons and ligaments act as conductors. Fat acts as an insulator. The current will flow through the path of least resistance. Muscle tissue, which contains about 80% water, acts as a good conductor for the current. Fat carries far less water, thus making the current work harder to get around the fat. Thus creating a higher impedance value.
21 Permanent Weight Loss Diet Exercise Combination of the diet and exercise is the BEST
22 WEIGHT LOSS METHODSWeight loss in poundsDiet Alone
23 Caloric Cost of Physical Activity Calories = (# cal. burned/minute/pound) x (weight x minutes)Example:Calories = (.079 cal./min./lb.) x (120 lbs. x 30 min.)calories= 284
24 Weight Control Myths Exercise does not help with weight loss. Spot reduction - exercising certain areas will remove fat in that area.Increasing activity will increase your appetite.Excessive fat is a glandular problem.
25 IDEAL BODY WEIGHT Triceps Skinfold _____ mm + Calf Skinfold _____ mm Percent of Body Fat _____ %Sum = _____ mmDetermine your fat weight by multiplying your weight times your percent of body fat.Weight _____× % Fat × _____Fat Weight = _____Determine your lean body weight (LBW) by subtracting your fat weight from your weight.– Fat Wt. – _____LBW = _____
26 IDEAL BODY WEIGHTBody fat =12%Lean body weight = 88%
27 IDEAL MINIMUM / MAXIMUM FEMALESIdeal Minimum = Lean Body Weight = ________ = ________ lbs.(13% fat) LBW .87Ideal Maximum = Lean Body Weight = ________ = ________ lbs.(32% fat) LBW .68Males(7% fat) .93 LBW .93(25% fat) .75 LBW .75Determine your ideal body weight by dividing your ideal percent of lean body weight into your lean body weight.Lean Body Weight = ________ = ________ lbs.Ideal % LBWHow many pounds are you currently over or under your ideal body weight?