The human thermal portrait and its relations with aerobic working capacity and the blood lactate level

Thermal body patterns for healthy Brazilian adults (male and female)

“…This technology is used in the medical field, where it can provide doctors with information about the physiological responses associated with skin temperatures (T sk ) to identify different types of pain syndromes (Al-Nakhli et al, 2012), changes in the T sk (Park et al, 2012, Howell et al, 2009, George et al, 2008, vascular deficiencies (Huang et al, 2011;Brioschi et al, 2003), or neurological problems (Zaproudina et al, 2006); provide assistance in cardiac interventions (Brioschi et al, 2003); or help in cancer diagnosis and monitoring (Arora et al, 2008). Recently, thermography has also been proposed as a way to prevent sports injuries Gomez-Carmona et al, 2011), control training load (Akimov et al, 2010), or study thermal responses during and after exercise Merla et al, 2010;Marins et al, 2012 ab ;Merla and Romani 2008;Garagiola and Giani, 1990). Most thermography studies evaluate contralateral T sk differences (ΔT sk ) existing in pathological conditions such as cancer (Acharya et al, 2012;Arora et al, 2008) or spinal disorders (Ammer, 2010).…”

Effect of training on treadmill performance, aerobic capacity, and body responses to acute cold exposure

“…We have previously shown that regional acute cold exposure leads to a rapid decrease of lactate in the peripheral blood [2]. In this series of studies, our pre vious finding that the blood lactate level decreased under the influence of cold exposure was fully con firmed, both before and after exercise (Fig.…”

“…In our previous studies [1,2], we have found that there is a strong correlation between the infrared ther mal portrait of athletes made at normal room temper ature at rest and the key indices of aerobic (maximal oxygen consumption ( ) and anaerobic thresh old) and anaerobic (blood lactate level) performance (positive in the first case and negative in the second). We assumed that this correlation is due to the activity of brown adipose tissue (BAT), which plays a homeo static role during physical load.…”

“…At best, physical exercise is considered as another (along with cooling and hypercaloric diet) method to activate BAT with the purpose of its thera peutic use to fight against obesity and diabetes by increasing nutritional thermogenesis [12,13]. How ever, back in 2010, we found that acute regional cool ing (immersion of foot in a bath with ice water for 1 min) leads to a significant reduction of the lactic acid level in the blood of the majority of test subjects [2]. Apparently, this cooling causes a rapid sympathetic response leading to the activation of the oxidative activity of BAT.…”

“…We assumed that this correlation is due to the activity of brown adipose tissue (BAT), which plays a homeo static role during physical load. It was shown first experimentally [2] and then theoretically (on the basis of published data [3]) that BAT, which is known to be involved in maintaining temperature and carbohy drate homeostasis, is likely to maintain the acid-base equilibrium during muscular work due to its ability to utilize lactic acid.…”