45
processes [ 17 ], the environmental exposure [ 18 ], the therapeutic intervention [ 19 ]
and so on (Table 3.1). Additionally, an effective “ideal” biomarker has the following
characteristics, according to the FDA: (1) Non-invasive/accessible. Ideally, the
overall expectation of biomarkers, from the way in which the sample is obtained,
the sampling should be non-invasive/accessible, or at least non-lethal. As a
researcher or clinical physician, it is also important to consider whether samples are
readily available, and the results obtained via a rapid access measurement or pro-
posal. (2) high, sensitive and specific. Given one of the main purposes of the bio-
marker, applications are to make a definite diagnosis and to guide treatment methods
and management strategies in clinical practice, beyond the rapid and inexpensive,
high sensitive and specific is one of the important indicators. Applicable to a broad
range of testing and lacking sensitivity and specificity is the primary reason restrict-
ing its application; (3) Cost effective. As an ideal biomarker, the overall costs should
be reasonable.
2 Traditional Inflammatory Biomarker and Regular
Physical Activity—at a Glance
The inflammatory biomarkers provide part of the comprehensive assessment of
physical activity.
However, taking into account the diverse effect on physical activity and factor-
mediated inflammation, in this part, we would like to concentrate on the applica-
tions and limitations of inflammatory biomarkers for the evaluation of some
multi-center, community-based physical activity studies. Numerous studies have
Table 3.1 Biomarkers: a basic glossary
Categories of
biomarkers subgroup Discription
Inflammatory factors
biomarkers
IL-6, IL-8, IL-10, TNF-alpha, hs-CRP,
IL-6sR, IL-1sRII, sTNFRI, sTNFRII, IL-15,
Adiponectin
Associated with
exercise-induced
cardiac dysfunction
[ 20 ];
Chronic heart failure
[ 21 ]
Functional
metabolomics
biomarkers
1-naphthol, 2-naphthol, GlcNAc-6-P,
L-carnitine methylitaconate, N-acetyl-d-
glucosamine 6-phosphate and l-carnitine
Maximum oxygen
uptake [ 22 ]
Coronary artery
calcium (CAC)
progression [ 23 ]
The heart-specific
proteome
Natriuretic peptide B, troponin T type 2
(cardiac), myosin binding protein C, ankyrin
repeat domain 1, SH3 domain binding kinase
family, myosin, light chain 4, alkali; atrial,
embryonic
Interstitial fibrosis [ 24 ]
3 The Effects offiExercise onfiCardiovascular Biomarkers: New Insights, Recent Data...