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5th
WORLD CONGRESS OF PREVENTION OF DIABETES AND ITS COMPLICATIONS
June, 1-4, 2008, Helsinki, Finland
Title:
A proposal - a measure in the modern concept of type-2 diabetes (T2DM) prevention focused on
increasing cardiorespiratory fitness and macronutrient content of diet at high-risk obese adult and
elderly population
Author:Simovska Vera., MD., PhD.
Institution:HEPA Macedonia National organization for the promotion of health-enhancing physical activity, Skopje,
Macedonia, FYR
Introduction/Aims:Obesity is known to lead to many health issues: metabolic complications that increase the risk for
development of type-2 diabetes (T2DM) in adult and elderly population (elderly diabetes),
cardiovascular diseases, and joint public health problems.
Our objectives were to promote preventive-therapeutic programmes with a proposal - a measure forincreasing cardiorespiratory fitness (VO2max) and macronutrient content of diets intended for obese adult
and elderly population with abdominal fat distribution who are asymptomatic, but at high-risk for
development of T2DM.
Method:Within the 7 week clinically controlled trial at a group of 82 middle-aged subjects (24-65 years) devided
into two intervention groups: physical activity and diet (PAD) and diet (D) with mean BMI = 32.6 kg/m2
and present
pre-diabetes (a fasting plasma glucose of 100 140 mg/dl after an overnight fast), the following wereapplied: individually dosed, programmed physical activity (PA) and moderate energy reduced
diet,performed into two phases.
A proposal - a measure for increasing VO2max with aim to reduce T2DM risk included: 30 minutes daily
in 3 bouts of ten minutes or 2 bouts of 15 minutes of moderate-intensity physical activity (3.0 - 4.5 METs
for male; 2.1 - 4.2 METs for female) with training pulse of 50 - 59% heart rate maximum reserve in the
first phase or 45 - 60 minutes, 3 times a week of moderate to vigorous intensity physical activity (4.5 - 7.0
METs for male; 4.2 - 6.3 METs for female) with training pulse of 60% heart rate maximum reserve in
the second phase. Muscle strength and flexibility exercise was included twice a week.In the first phase of the research, moderate energy reduced diet had a character of "a temporary" diet of
1200kcal/d with a specific macronutrient content: CHO=50.1% (Poly CH=47.2%), P=25.7% and
F=25.8% of total energy intake,
a specific relation among SFA, MUFA, PUFA, a low atherogenic potential (AI < 15) and vitamin-mineral
supplementation. The second phase was the increased energetic value of the diet for 200 kcal/d with nextcontent: CHO=54.1% (Poly CH=58.9%), P=26% and F=21.1% of total energy intake.
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Conclusion:
T2DM can be prevented in high-risk truncal obese adult and elderly population using increasing VO 2maxand specific macronutrient content of diets in accordance with our a proposal - a measure.
References:
1. Simovska V: EFFECTS OF DIETOTHERAPY AND PROGRAMMED PHYSICAL ACTIVITY ON
ATHEROGENIC RISK FACTORS IN OBESE SUBJECTS. Ed. Monography. Skopje: Menora 2008,
Macedonia.
2. Simovska V.,Vidin M.: PRESCRIPTION AND MODELLING OF PROGRAMMED PHYSICAL
ACTIVITY IN AN INTEGRATED CVD RISK MANAGEMENT. The International XVIII Puijo
Symposium 2005: Physical Activity in Conuction with Pharmacological Therapy for Chronic Vascular
Diseases, Koupio, Finland 2005. Finnish Sports and Exercise Medicine e-Magazine. The International
XVIII Puijo Symposium special issue 2005.
3. Simovska V: THE PRESENCE OF RISK FACTORS FOR CARDIOVASCULAR DISORDERS IN
THE FAMILY AND EARLY DETECTION IN THEIR CHILDREN. Post-graduate subspecializationthesis, Medical Faculty University of Belgrade, SR Yugoslavia 1993.
4. Simovska V., Pecelj-Gec M., Marinkovic J., Kocev N., Vidin M.: PREDICTION OF EFFECTS OF
NON-PHARMACOLOGICAL TREATMENT AT ABDOMINAL OBESE INDIVIDUALS USING
MATHEMATICAL MODEL. Ist
Yugoslavian Congress for Atherosclerosis with International
Participation, Belgrade 2001. The Book of Abstracts 2001:42.
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Vera Simovska. MD., PhD.
www.cindi.makedonija.com
The question of an integrated T2DM and CVD risk
management at high risk obese subjects is important scientific
problem and every new result opens new questions. It,s
becoming increasingly clear that physical activity may be a
therapeutical tool in a variety of subjects with, or at risk for
T2DM and CVD.
At present, clinical researches of different branch of medicine,
exercise scientists, pharmacists, nutritionists, psychiatrists,
sociologists and many others are surprised with the fact thatfinally healing is achieved at every seventh of hundred obese
individuals with average/ increased and high risk for T2DM,
CVD and other NCD.
Overall scientific results including our data are additional
argument that any other preventive-therapeutic treatment isnot possible to be applied as alteration for physical activity in
an integrated T2DM and CVD risk management.
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INTRODUCTION
Numerous epidemiological, genetically and molecular
studies at different population worldwide confirmed that obesity isassociated with metabolic complications that increase the risk forT2DM, CVD and other NCD. The complex of multifactor phenotype isdetermined of interaction between:
Behavior factors: energy intake and expenditure defined
as affects on body fat mass
Genetics variations (hereditary predisposition)
Different biological factors: sex, vulnerable ages related
to increased weight, ethnically and hormone activity
Community situation
Environmental factors
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OBJECTIVES:
1. To promote preventive-therapeutic programmes with a
proposal-a measure for macronutrient content of diets and
increasing cardiorespiratory fitness (VO2max) intended fortruncal obese subjects who are asymptomatic, but at high-risk for T2DM and CVD.
2. To develop a method for prescription of programmed physical
activity (PA) in accordance with individual performing theexercise and biological characteristics of subjects.
3. To estimate the efficiency of the method on T2DM and CVDrisk reduction at abdominal obese subjects included in 7wkrandomized controlled trial.
4. To construct a new index as mathematical model for predictingthe effects of non-pharmacological therapies at obesepopulation on average/increased and high risk for CVD andother NCD.
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MATERIAL AND METHOD:
Within the clinically controlled trial was examined 45 middle-aged
subjects devided into two intervention groups: PAD (physical activity
and diet) and group D (diet) with mean BMI=32.6kg/m2 and present
pre-diabetes (a fasting plasma glucose of 100-140mg/dl after an
overnight fast).
In group PAD the following were applied: moderate energy reduced
diet and individually dosed, programmed physical activity (PA)
performed into two phases.
In the first phase of the research, a diet had a character of
"a temporary" diet of 1200kcal/d with a specific macronutrient content:
CH=50.1% (Poly CH = 47.2 %), P=25.7% and F=25.8% of total EI, a
specific relation among SFA, MUFA, PUFA, a low atherogenic potential
(AI
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6
41
17
5,7
14,5
1
21,4
43
16
9
13,67
0
18,26
30
22,54
6,84
23,14
0
17,37
0
5
10
15
20
25
30
35
40
45
bread
,pasta
meat,
fish
,eggs
fat,
oil
milk
,dairy
products
sugar
,cakes
vegetables
,fruits
1200kcal-Ist phase
1400kcal-IIth phase1300kcal-WHO CIN
1200kcal-Ist phase 1400kcal-IIth phase 1300kcal-WHO CINDI
%
BASIC FOOD GROUPS IN DAILY MAILS
- Ist AND IIth PHASE OF DIETO THERAPY
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Table 3. MACRONUTRIENT CONTENTTable 3. MACRONUTRIENT CONTENTTable 3. MACRONUTRIENT CONTENTTable 3. MACRONUTRIENT CONTENT
CINDI FOOD PYRAMID (WHO,,,, 1998)
Tab-1. An integrated T2DM and CVD risk management included both
PA and hypocaloric diets of 1200 kcal/d as temporary diet and
1400 kcal/d (second phase) with low atherogenic index (AI).
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Tab-2. MICRONUTRIENT CONTENT OF DIETOTHERAPY
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GRAF 1. FAT CONTENT (SFA, MUFA, PUFA) IN Ist AND IIst PHASE OF
DIET THERAPY, EXPRESED IN PERCENTAGE OF TOTAL ENERGY INTAKE/24h
9,26
8,84
7,27
5,39
9,49
5,75
10
12
8
0
5
10
15
20
25
30
35%
1 PHASE 2 PHASE AHA/EAS >2000kcal/d
F A T SFA MUFA PUFA
25.43%
20.83%
30%
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10
24.97
75.03
43.71
56.29
60
40
0
10
20
30
40
50
60
70
80
90
100%
1 etapa AHA/EAS>2000kkal/d
PROTEINI
rastit.proteini `ivot.proteini
25.28% 25.73% 16%
52.78
47.22
41.13
58.87
30
70
0
10
20
30
40
50
60
70
80
90
100
%
1 etapa 2 etapa AHA/EAS
>2000kkal/d
merewa
JAGLENI HIDRATI
mono-disaharidi polisaharidi
49.27% 53.43% 60%
GRAF. 2 MACRONUTRIENT CONTENT IN Ist AND IIst PHASE OF DIET THERAPY,EXPRESED IN PERCENTAGE OF TOTAL ENERGY INTAKE (kcal/24h)AND AHA/EAS RECOMMENDATION
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- First phase: moderate-intensity PA with TP = 50 % HRMax
reserve, 30 min daily in 2 bouts of 15 min. and
- Second phase: moderate to vigorous-intensity PA with
TP > 60 % HRMax reserve, 60 min per day, 3 times a week.
Using tables for gross energy expenditure of various PA
with known energy cost (METs) were chosen different type
of PA in accordance with initial level of VO2max (METs).
(Poster for Physical Activity and Health).
Muscle strength and flexibility exercise were includedtwice a week.
A proposal - a measure for increasingcardiorespiratory fitness - VO2 max
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METHODS FOR PRESCRIPTION OF PHYSICAL ACTIVITY
1. The basic criterion for patient selection in four groups ofphysical activity levels (PALs) was initial level of VO2maxexpressed in term of metabolic equivalents (METs).
2. MET was calculated by the equation:
VO2max (ml-1kg-1min-1)/3.5
3. The method for modeling of programmed PA
was established using the classification for VO2max(WHO, 1974).
4. Training pulse (% HR max reserve) was calculated using
equation by Karvonen Martin (Tab. 1).
5. Classification for intensity of PA i.e. physical work wasexpressed as energy expenditure in term of METs (Tab. 2).
6. Using tables for gross energy expenditure of various PA withknown energy cost (METs) were chosen different type of PA inaccordance with initial level of VO
2max (METs) (Poster for
Physical Activity and Health).
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Table 3. METHOD FOR PRESCRIPTION AND MODELLING OF
PROGRAMMED PHYSICAL ACTIVITY
Method for prescription and modeling of programmed physical activity
>7.0 m.; >6.3 f.>12 m.; >10 f.75-84%; 85%Training for sport
4.5 - 7.0 m.4.2 - 6.3 f.
8.5-12.0 m.6.8-10 f.
60-74%PAL IIExercise for
fitness
3.0-4.5 m.
2.1-4.2 f.
5.6-8.5 m
4.3-6.8 f50-59%
PAL I
Activity for health
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Tab-4. CLASSlFICATION FOR INTENSITY OF
PHYSICAL ACTIVITY/WORK EXPRESEDAS ENERGY EXPENDITURE (METs)
METs-male
(ANDERSEN)
METs-female
(WHO)
INTENSITY OF
PHYSICAL ACTIVITY/WORK (METs)
< 3.0 < 2.1 LIGHT TO MODERATEACTIVITY
3.0 4.5 2.1 4.2 MODERATE
4.5 7.0 4.2 6.3 MODERATE TOVIGOROUS
> 7.0 > 6.3 STRENUOUSACTIVITY
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Training for sportStrenuous activity
Duration and frequency according to
individual fitness level.
Intensity of work:male >7.0 mets;
female>6.3mets
Relative intensity:HRmax 80-89%; >90 %
HRmax reserve 75-84% ; >85%
Exercise for fitness and increasing performancemoderate to vigorous activity,
20 minutes or more, 3 times a week.
Intensity of work:male 4.5 7.0 mets; female 4.2 - 6.3 mets
Relative intensity: HRmax 68 79% ;
HRmax reserve 60 - 74 %
Activity for healthmoderate activity, 30 minutes or more, daily.
Intensity of work: male 3.0-4.5 mets; female 2.1-4.2 mets
Relative intensity:HRmax 60 67 %;
HRmax reserve 50 59%
Active living
Light to moderate activity, 10 minutes or morea few times a day, daily.
Intensity of work: male < 3.0 mets ; female < 2.1 mets
Relative intensity: HRmax > 35% ; 35 59 %;
HRmax reserve > 30% ; 30 49 %
HR max reserve (training puls) =0.5 (220-years-morning heart rate)+ morning heart rate
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R E S U L T S:
The efficiency of prescribed PA and/or diet therapy on T2DM
and CVD risk reduction was examined in abdominal obesepatients included in 7 week randomized controlled trial.
Improved VO2max at 17.16% from baseline promotedsignificant greater reduction on level of CVD risk factors in FADthan those in D group of obese patients included:
body weight (BWkg.)
% body fat mass (%F)
waist circumference (WC)
waist/hip ratio (WHR)
systolic blood pressure (TA-sist.)
index of atherosclerosis (LDL-C/HDL-C)
Serum glucose (GLY)
HDL was increased at 10.41% from baseline in FAD anddecreased at 9.3% in D group.
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Graf. 3 SUBJECTS DISTRIBUTION IN PHYSICAL ACTIVITY GROUPS(PALs) - INICIAL AND FINAL RESULTS IN FAD GROUP
40
20
50
55
10
0 0
25
0
10
20
30
40
50
60
%
PAL I-ACTIVITY FOR
HEALTH
PAL II-EXERCSE FOR
FITNESS
SPECIAL PROGRAM TRAINING FOR SPORT
GROUP - "FAD"
INICIAL PHASE
FINAL PHASE
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18
00
-176,54
-112,43
-200
-180
-160
-140
-120-100
-80
-60
-40
-20
0
0
BW gr/d
p
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19
5,29
6,17
4,32
4,795,19
4,32
0
1
2
3
4
5
6
7
8
GLy-mmol/l
INICIJAL FINALmerewa
GRUPA FAD GRUPA D GRUPA K
p>0.05p>0.05
MANOVA
4,795,195,29
6,17
0
1
2
3
4
5
6
7
INICIJALNA FINALNA
merewa
GRUPA FAD GRUPA D
p00.05
Graf 5. DESCRIPTIVE CHARACTERISTICS ON GLYCAEMIA (Glymmol/l)
IN INICIAL AND FINAL PHASE AND DINAMICS OF CHANGES
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5.60
7.10
3.78
4.76
5.72
3.78
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%%HbA1c
INICIJAL FINALmerewa
GRUPA FAD GRUPA D GRUPA K
p>0.05
p>0.05
MANOVA
4.76
5.60 5.72
7.10
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
INICIJALNO FINALNO
merewa
%HbA1c
GRUPA FAD GRUPA D
p00.05Graf 6. DESCRIPTIVE CHARACTERISTICS ON %HbA1c IN
INICIAL AND FINAL PHASE AND DINAMICS OF CHANGES
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3
3,38
2,17 2,15
3,12
2,17
0
0,5
1
1,5
2
2,5
3
3,5
4
LDLL
-C/HDL-C
INICIAL FINAL
FAD roup D roup K roup
p0.05
MANOVA
2.15
3.123
3.38
0
0.5
1
1.5
2
2.5
3
3.5
4
INICIJALNO FINALNOmerewa
LDL-C/HDL-
c
GRUPA FAD GRUPA D
p0
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-3,1
-5,2
0
-10,2
0
14,8
0
17,1
0
5,5
-9,3
10,4
-10,2
-27,7
-7,7
-28,6
-5,6
-9,5
-3,3-4,5
-1,8-3,3
-6,3
-10,3
-5,3
-7,9
-3,5-4,9
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25 %
FAD D
Graf. 8 - Significant changes in level of VO2max and major risk
factors for T2DM and CVD between FAD (physical activity and diet) andD (diet) groups of abdominal obese subjects
TT-I f TT %M LBM WHR OS LDL/HDL TC/HDL
HDL
%Fc-m
VO2max
VO2maxOPV
%FAIBMR
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LOGISTIC REGRESSION
Logistic regression was implement with aim to predict those regressors which withtheir values as final result are giving a probability for selecting for either the groupPAD or the group D.
In the analysis are included 50 independent variables, and as outcome variable wasthe group which signified the type of therapeutically treatment among our patients.
The first model of logistic regression shown in a form of equation gives dividingthe patients in one of the groups depending on the value of the exponent (Exp. B)which is interpreted in term of relative risk (RR).
As a result is the prediction of 94.87%.
The result shows that the regressors are separated like the following 6 variables:body mass index-BMIkg/m2, cardio respiratory capacity VO2maxOPV (ml
-1kg-1min-1) as expected average value, indicial level of hemoglobin-Hbin, skin fold thickness
upon m.biceps (SFT-Bin), level of VO2max using by WHO classification and energyexpenditure (kcal/h) during PA with intensity of 50% HRmax reserve (VO2max).Logistic model in form of equation is:
lnRR = 108.2588 1.7689 x DKN-B in + 1.7087 x BMI in+ 0.3993 x Hb in
- 2.9423 x VO2max (OPV)- 10.5402 x WHO in+ 0.0770 x 50%kcal/h
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This method for prescription and modeling of programmedphysical activity is proposed since the relative risk is upper than 1
(RR>1).
The second model of the logistic regression shows the efficacy of
treatment and that is patients of PAD group are increasing the levelof HDL-C.
In this analysis are included 47 variables. As outcome variable is
HDL-C in the final phase of treatment. It's the most significant leading
change, confirmed mathematically with the equation:lnRR=11.834710.545 HDL-C fin
The results of this clinical trial are pointing to the significant of the
discovery of this variables.
The aim is the dividing of the group of risk patients with the
possibility developing complications related to obesity.
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CONCLUSION
Using our method for prescription and modelling of programmed
physical activity (PA) were achieved:
- significant greater reduction on T2DM and CVD risk in FAD (physical
activity and diet) group than those in D (diet) group
- enlarged types of PA- enabled safe performance and
- avoid the risk for cardiovascular events during the individually and
group,s exercising.
Broader application of the method for prescription and modelling of programPA on field is proposed at subjects and groups with:
- low level of cardiorespiratory fitness: 20 ml/kg/min VO2 for male
and 14.2 ml/kg/min VO2 for female
- increased/high risk for main NCD- insulin resistance/Sy X
- FAI%, sport,s recreation.
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REFFERENCES:
1. Karvonen M.: The effect of training on heart rate. A longitudinal study. Ann.
Med Exp Biol enk 1957; 35:307-317.
2. WHO, Energy and protein requirements. Geneva: WHO 1985 (WHO Techn. Rep.Series 724).
3. American College of Sports Medicine, Statements Position. The
recommended quantity and quality of exercise for developing and maintain
fitness in healthy adults. Med Sci Sports Exerc 1998;30:375-91.
4. Simovska V: The effects of programmed physical activity and diet therapyon some atherogenic risk factors associated with abdominal obesity. Doctoral
dissertation, University St. Cyril i Methodij, Medical Faculty, Skopje.
Bulletin 2001; 777:56 - 66,
5. Andersen KL, Madironi R, Rutenfranz J, Seliger V et al.: Habitual physical
activity and health, WHO Regional Publications European, Series No., Copenhagen
1978.