MET Sistemi ve Dinlenik Metabolik Hızın Kestirilmesinde Sensewear Pro3 Armband’ın Geçerliği

Abstract

Bir MET, 3.5 ml.kg-1.dk-1 VO2’ye karşılık gelmekte

ve dinlenik metabolik hız (DMH) olarak kabul edilmektedir.

Bununla beraber 1 MET değerinin yüksek

olduğuna dair tartışmalar mevcuttur. Bu çalışmanın

üç amacı vardır; 1. DMH’nin kestiriminde SenseWear

Armband’ın (SWA) geçerliğini belirlemek, 2. indirekt

kalorimetrik yöntem (İKY) ve SWA ile belirlenen

DMH’nin MET sistemi ile aralarındaki farkları saptamak,

3. DMH’nin vücut kompozisyonu ile arasındaki

ilişkileri incelemektir. Araştırmaya 25-55 yaş

aralığında 28 erkek ve kadın gönüllü olarak katılmıştır.

DMH, İKY ile ölçülmüş ve eş zamanlı olarak SWA

ile enerji harcaması kayıt edilmiştir. VO2’nin kalorik

eşdeğeri Weir’in (1949) formülü ile belirlenmiştir.

SWA’dan belirlenen MET değerlerinin 1 MET’ten ve İKY

ile ölçülen dinlenik VO2’nin 3.5 ml.kg-1.dk-1 (1 MET)’ten

farkı Tek Örneklem t Testi, iki yöntem arasındaki

farklar Bağımlı Gruplarda t-Testi, değişkenler

arasındaki ilişkiler Pearson’un Korelasyon katsayısı

ile belirlenmiştir. SWA’dan saptanan MET (1.0 􀁲 0.12)

1 MET’e eşit (p>0.05), İKY ile ölçülen MET (0.83 􀁲 0.16)

1 MET’ten önemli derecede düşüktür (p<0.01). SWA’dan

ölçülen MET, İKY’den yüksektir (p<0.05). İki yöntemden

belirlenen MET değerleri arasındaki ilişki anlamlı

değildir (p>0.05). İki yöntemden ölçülen DMH değerleri

arasında anlamlı ilişki (p<0.01) saptanmış olmakla beraber,

SWA’dan ölçülen DMH, İKY’den yüksektir (p<0.05).

İKY ve SWA’dan belirlenen DMH ve vücut ağırlığı, beden

kitle indeksi, yağsız vücut kitlesi arasında anlamlı

yüksek ilişkiler saptanmıştır (p<0.05). Bu çalışmanın

bulguları İKY ile ölçülen DMH’nin 1 MET’ten önemli

derecede düşük olduğunu, SWA’nın DMH’yi yüksek

kestirdiğini ve İKY ile örtüşmediğini, her iki yöntemle

belirlenen DMH için en önemli vücut kompozisyonu

bileşeninin YVK olduğunu göstermiştir.

Keywords

• Dinlenik metabolik hız,MET,Sensewear Armband,İndirekt kalorimetri

Validity of Senserwear Pro3 Armband to Estimate MET System and Resting Metabolic Rate

Abstract

One metabolic equivalent (MET) corresponds to

3.5 ml.kg-1.min-1 VO2 and is accepted as the resting

metabolic rate (RMR). However, there have been arguments

related with VO2 equivalent of 1 MET (3.5 ml.kg-1.

min-1); some arguments indicated that this value is relatively

high and may lead to misclassification of physical

activities. The present study has 3 purposes: 1. to

determine the validity of SenseWear Armband (SWA)

in predicting RMR; 2. to assess the differences between

the MET system and RMRs determined by SWA and indirect

calorimetry (IC) and 3. to evaluate the associations

between body composition and RMRs determined

by the two methods. Twenty-eight men and women

(age range:25-55 yrs) participated in the study voluntarily.

RMR was determined by IC by measuring VO2

and CO2. Energy consumption was recorded simultaneously

with SWA. Caloric equivalent of VO2 was determined

by Weir’s equation (1949). Differences between 1

MET and SWA-measured MET values and between resting

VO2 measured by IC and 3.5 ml.kg-1.min-1 were de-

termined by One-Sample t-test; differences between the

two methods were determined by Paired-Samples t- test;

and associations between the variables were determined

by Pearson’s correlation coefficient. SWA-measured MET

(1.0 􀁲 0.12) was equal to 1 MET (p > 0.05), whereas IC-measured

MET (0.83 􀁲 0.16) was lower than 1 MET (p<0.01).

SWA-measured MET was higher than IC-measured MET

(p<0.05). The association between MET values determined

by the two methods was not significant (p>0.05).

Although significant correlation (p<0.01) was found between

RMRs (kcal.day-1) measured by the two methods,

SWA-measured RMR was higher than IC-measured RMR

(p<0.05). Significant correlations were found between

both IC and SWA-measured RMRs and body weight, body

mass index and lean body mass (p<0.05). Results of this

study showed that; RMR measured by IC was significantly

lower than 1 MET, SWA overestimated RMR compared to

IC method, and LBM was the most significant body composition

component associated with RMRs determined

by both methods.

Keywords

• Resting Metabolic Rate,MET,SenseWear Armband,Indirect Calorimetry

References

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4. SPOR BİLİMLERİ DERGİSİ