Southeast Texas Medical Associates, LLP James L. Holly, M.D. Southeast Texas Medical Associates, LLP


Your Life Your Health - Being Healthy and never exercising? It is possible!
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James L. Holly,M.D.
March 06, 2008
Your Life Your Health - The Examiner
Never, go to the gym? Never lift weights? Never jog around a track? You may be among the healthiest people in he world. The healthiest people in the world as a result of physical activity are people who have never and would never go to a gym but who because of their life style are very active. By father was a great example. In his entire life, he never "exercised." He never went to a gym or lifted weights, but his job had him walking long distances, lifting heavy objects and staying active. And, then when he finished his work day, he continued gardening or working in the yard or doing other tasks which required physical exertion. As a result, he was never overweight, never modified his diet, never had diabetes, hypertension or other diseases associated with a sedentary lifestyle.

Gyms and tracks and weights and structure exercise are not a part of nature’s design. They are the result of our distortion of nature’s design. They are a result of the change in our life styles which we associate with progress but which often result in the deterioration of our health.

In previous Your Life Your Health articles, we have established that:
  1. Two weeks of total bed rest will deteriorate your physical conditioning more than thirty ears of aging - and we have demonstrated that it is easier to regain your conditioning after thirty years of age than it is to regain it after two weeks of bed rest.
  2. A sedentary life style evidenced by watching more than 10 hours of television a week and/or by walking less than 10,000 steps a day, is a greater risk factor for the development of heart failure than diabetes mellitus which is by itself and independent risk factor for heart disease.
  3. An extremely active lifestyle such as that of the Amish in Pennsylvania or the Masai in East Africa can overcome the side effects of a diet high in saturated animal fat and a high calorie diet.
  4. However, even the beneficial effects of an active lifestyle can be overcome by smoking, excessive alcohol use, stress
The problem for most of us is that our jobs do not require physical exertion Therefore, we spend most of our day accumulating "inactive hours" which requires us to pack our physician exertion into a short period of time at gyms, on tracks, or in other structured exercise programs in order to be healthy.

Total Energy Expenditure (TEE)

If you want to understand why you gain weight or how you can lose weight, you must have an approximation of your TEE. Your daily "Total Energy Expenditure" (TEE) is a combination of three things:
  • Digestion of Food (Thermogenic Rate) 10% -- this is the energy required to process the food which you eat.
  • Physical Activity (Active Metabolic Rate) 20% -- this is the energy which is consumed by the activities in which you engage each day. We will look at some of the common activities and their contribution to your TEE later in this article.
  • Energy for basic body processes (Basal Metabolic Rate) 70% -- this is the energy which you consult just by living and breathing. This is what you would consume if you just sat all day.
Thermogenic Rate

Your thermogenic rate is a fairly fixed number based on the amount of food you eat each day. Because the figures we use in clinical practice to estimate your caloric needs are a rough approximation, it is not unwise simply to ignore the thermogenic rate and let that "make up" for our usual underestimation of how much we eat and for our usual over estimation of how much exercise or work we do. There is, however, one absolute way of knowing whether you are exceeding your total energy expenditure in what you eat. If you are gaining weight, you are eating too much. If you are losing weight, you are eating less than your TEE. There is no magic here; you can know for sure.

BMR

The 60-70% of energy which is used each day with your BMR is the surprising number for most of us because we burn that much energy every day by doing absolutely nothing. SETMA’s electronic medical record uses the Harris-Benedict Equation to calculate the BMR (Basal or Resting Metabolic Rate) which is he way it has been done since 1919. Researchers today say that this equation is not entirely accurate. Every person has so many variables to consider, such as ratio of fat to lean muscle mass, genetics, activity level, menopause and many other things. Although it isn’t perfect, it is a good tool in helping to understand how much energy we need to consume and burn.

Calculating Your BMR:
  1. Women: BMR = 655 + ( 4.35 x weight in pounds ) + ( 4.7 x height in inches) - ( 4.7 x age in years)
  2. Men: BMR = 66 + ( 6.23 x weight in pounds ) + ( 12.7 x height in inches ) - ( 6.8 x age in year )
As you can see the variables which are directly used to calculate your BMR are weight, height, gender and age. If you have calculated this number, you now know approximately how much your energy your body requires just for basic life processes. These are the functioning of your organs such as brain, kidneys, liver etc.

Some of the factors which affect your BMR are:
  • Age: In youth, the BMR is higher; age brings less lean body mass and slows the BMR.
  • Height: Tall, thin people have higher BMR's.
  • Growth: Children and pregnant women have higher BMR's.
  • Body Composition: The more lean tissue, the higher the BMR. The more fat tissue, the lower the BMR.
  • Fever: Fevers can raise the BMR.
  • Stress: Stress hormones can raise the BMR.
  • Environmental Temperature: Both the heat and cold raise the BMR.
  • Fasting/Starvation: Fasting/starvation hormones lower the BMR.
  • Malnutrition: Malnutrition lowers the BMR.
  • Thyroxin: The thyroid hormone thyroxin is a key BMR regulator; the more thyroxin produced, the higher the BMR. Some weight loss clinics will give a patient extra thyroid in order to boast their BMR. This is not safe and can cause long-term health problems. You should never take more thyroid than you need; even our thyroid function is low.
Active Metabolic Rate (AMR):

Now, you can determine your Active Metabolic Rate (AMR) which is your BMR or resting rate plus the amount of energy you require for the level of physical activity you exert on a typical day. You multiply the BMR number you calculated above times the number below which represents your typical level of activity. In calculating your AMR, you multiple b your BMR according to this formula::
  • If you are sedentary (little or no exercise): Multiply BMR x 1.2
  • If you are lightly active (light exercise/work 1-3 days per week): Multiply BMR x 1.375
  • If you are moderately active (moderate exercise/work 3-5 days per week): Multiply BMR x 1.55
  • If you are very active (hard exercise/work 6-7 days a week): Multiply BMR x 1.725
  • If you are extra active (very hard exercise/work 6-7 days a week): Multiply BMR x 1.9
Activities which contribute to your AMR

In 2004, the International Journal of Behavioral Nutrition and Physical Activity published a review article which detailed the activities which contributed to your total daily energy expenditure. This data was developed through the National Human Activity Pattern Survey.

The survey included a 24-hour recall of daily activities for 9386 participants. All activities (or non-activities, including sleeping) over a 24-hour period were reported. This methodology is analogous to 24-hour dietary recalls used by national surveys of dietary intake [5]. Without prompting about the nature of the activities, respondents were asked to start with the time of arising on the previous day, and to describe everything they did and the time spent doing it - for example, "8:00-8:20, getting dressed; 8:20-8:30, eating breakfast." Activities were recorded in the respondents' own words, and recoded later by the authors. In addition to the identification of the specific physical activity, information on location and duration of the activity was obtained.

The study ranked 87 different activities and measured their contribution to a person’s Active Metabolic Rate. In the table below one MET (metabolic equivalent tasks) is the energy expenditure and caloric requirement at rest. Mild exercise such as walking at a leisurely pace increases energy expenditure to perhaps 2.5 METs/hour of walking. Vigorous activity can result in 6 to more than 12 METs/hour of activity.

While it is seen that structured physical activity can contribute more "METs" to your Active Metabolic Rate per hour, the number of hours spent each day in other activities shows why an active life style outstrips structured exercise in contributing to your AMR.

As you can change yur BMR by losing fat and gaining muscle, you can change your AMR by changing your daily habits, i.e., less time sitting and more time being active.

Full list ranking activities performed by subjects in the NHAPS study, 1992-1994

Rank

Activity Description

MET

Percent
Total Score

Cumulative Percentage (%)

Average Duration (min)

Number of Subjects

(1)

Sleeping, napping

0.9

(19.06)

--

501

7493

1

Driving car

2.3

   10.90

10.90

101

6574

2

Job: Office work, typing

1.5

9.24

20.13

415

2094

3

Watching TV/movie, home or theater

1.0

8.65

28.78

216

5919

4

Taking care of child/baby (feeding, bathing, dressing)

3.0

8.38

37.16

60

6545

5

Activities performed while sitting or lying quietly, little movement

1.3

5.78

42.94

158

4086

6

1.5

5.30

48.24

76

6843

7

Cleaning house, general

3.0

3.93

52.18

126

1489

8

Talking/ Visiting, in person or on phone

1.5

3.78

55.96

132

2858

9

Job: Industrial plant/factory (e.g. assembly line)

3.0

3.78

59.73

490

333

10

Food preparation (cooking, baking, setting table, etc.)

2.0

2.93

62.67

53

3996

11

Job: Construction site

5.5

2.76

65.43

500

119

12

Job: Light intensity, stand/walking (e.g. hospital staff, real estate inspector)

3.0

2.67

68.10

464

291

13

Yard work-general: mowing lawn, trimming hedges

4.3

2.63

70.73

147

559

14

Attending event (social) talking while sitting

1.6

2.22

72.95

142

1499

15

Shopping for non-foods (e.g. clothing)

2.3

2.07

75.02

97

1408

16

Job: Store clerk, bartender, hair stylist (light standing)

2.0

1.83

76.85

429

289

17

Job: Farm hand (chores: baling hay, cleaning barn)

8.0

1.55

78.40

417

57

18

Job: Restaurant staff (e.g. waiter, chef)

3.0

1.48

79.87

433

129

19

Job: Teaching class

1.8

1.09

80.96

417

195

20

Laundry

2.2

1.07

82.03

83

863

21

Walking, moderately, doing errands, walking to school)

2.8

1.03

83.06

79

716

22

Fishing and Hunting

3.3

0.93

83.99

294

103

23

Cleaning kitchen (sweeping)

3.3

0.88

84.87

54

689

24

Shopping for food, putting groceries away

2.4

0.86

85.73

47

1125

25

Swimming, exercise

7.0

0.83

86.56

121

96

26

Job: Mechanic

3.0

0.70

87.26

427

56

27

Gardening: Weeding, landscaping, picking vegetables

3.7

0.65

87.91

121

198

28

Remodeling, repairing house, workshop, concrete work

3.6

0.61

88.52

222

123

29

Exercise, aerobics

6.5

0.59

89.11

58

248

30

2.7

0.58

89.69

354

88

31

Dancing/ Heavy Partying

4.0

0.56

90.25

166

122

32

Moving, packing items

3.5

0.53

90.78

73

318

33

Sports: Golf

4.5

0.48

91.26

228

63

34

Playing with children, baby

2.8

0.47

91.73

107

173

35

Household chores, light cleaning

2.3

0.44

92.17

91

330

36

Caring for another person

4.0

0.43

92.59

89

162

37

Home projects (sewing, wrapping presents, arts and crafts)

1.5

0.42

93.01

172

259

38

Exercise at gym (e.g. Stairmaster, bike, treadmill)

7.2

0.40

93.42

85

103

39

Yard work-hard: chopping wood  digging,  shoveling snow)

6.0

0.39

93.80

120

88

40

Job: Feeding/ Working with livestock

4.0

0.38

94.17

80

131

41

Pet care: Walking, Playing, Cleaning, Feeding

2.7

0.35

94.53

39

576

42

Car maintenance, repair

3.3

0.35

94.88

169

91

43

Washing dishes/loading dishwasher

2.3

0.35

95.22

27

808

44

Game, board or cards, bingo, crosswords

1.5

0.32

95.55

150

223

45

Painting walls

4.5

0.27

95.82

229

36

46

Playing outdoors with others

4.0

0.26

96.08

116

57

47

Working in garage, general maintenance on items

3.0

0.20

96.28

145

52

48

Sports: Basketball

6.0

0.20

96.48

133

37

49

Other moderate recreational sports

6.6

0.18

96.65

118

22

50

Bike riding

8.0

0.17

96.83

95

31

51

Job: Packing, moving boxes

8.0

0.17

96.99

141

18

52

Volunteer work, unspecified

3.0

0.17

97.16

217

29

53

Other light recreational sports

3.5

0.15

97.31

122

54

54

Personal grooming (e.g. shaving, showering, brushing teeth)/ Dressing (sit/stand)

1.7

0.15

97.46

15

851

55

Jogging, exercise

7.0

0.14

97.60

53

57

56

Other heavy sports/exercise

9.7

0.14

97.74

131

14

57

Running, exercise

8.0

0.12

97.86

76

20

58

Sports: Baseball/Softball

5.0

0.12

97.97

133

22

59

Sports: Bowling

3.0

0.11

98.09

139

33

60

Hiking, exercise

6.0

0.11

98.20

214

14

61

Car washing

4.5

0.11

98.31

69

57

62

Waiting, standing

1.2

0.11

98.42

30

465

63

Game, video or computer

1.5

0.10

98.52

138

76

 

 

 

 

 

 

 

64

Ironing

2.3

0.10

98.63

54

125

65

Playing a musical instrument

2.5

0.10

98.73

106

51

66

Sports: Tennis

7.0

0.10

98.84

122

23

67

Sports: Darts, Billiards/ Pool

2.5

0.10

98.93

165

29

68

Job: Painting

4.5

0.09

99.03

272

13

69

Lawn care: Watering, seeding, fertilizing

2.1

0.09

99.12

64

109

70

Sports: Soccer

7.0

0.09

99.21

115

12

71

Carpentry work

3.0

0.09

99.30

173

30

72

Art and Theater: Directing, Acting, Painting, Drawing, Ceramics

2.2

0.08

99.38

213

34

73

Getting ready to leave (organizing)

3.0

0.07

99.45

29

122

74

Electrical Work

3.0

0.07

99.51

79

32

75

Job: High intensity, implied manual work (e.g. firefighter, oil well work)

10.5

0.06

99.58

83

10

76

Cleaning outside/ basement, heavy

3.0

0.06

99.64

125

29

77

Plumbing

3.0

0.06

99.69

204

18

78

Exercise, weight lifting

6.0

0.05

99.75

72

21

79

Job: Daycare

3.0

0.05

99.80

249

12

80

Walking, exercise

4.0

0.05

99.85

48

38

81

Yoga, Physical therapy

2.5

0.04

99.89

82

23

82

Choir Rehearsal, singing

2.0

0.03

99.92

95

20

83

Moving large items (furniture)

6.0

0.02

99.94

86

10

84

Sexual activity

1.3

0.02

99.96

93

31

85

Pumping gas

2.0

0.02

99.97

11

134

86

Flying airplane

 2.0

0.01

99.99

236

5

87

Lighting fire, furnace

  2.5

0.01

100.00

24

39



Improving your health will involve losing weight and exercise. Both will involve eating less and being more active. Being active involves much more than going to the gym. Remember, it is your life and it is your health.