Esophageal, rectal, and muscle temperature during exercise

Saltin, Bengt; Hermansen, Lars

doi:10.1152/jappl.1966.21.6.1757

Cited by 474 publications

(276 citation statements)

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“…Adding information on the central circulatory responses to incremental leg cycling, we found similar elevations in pulmonary artery and femoral venous T B , in agreement with the literature showing large increases in core and brain temperatures (Saltin et al . 1966; Nybo et al . 2002; Kenny et al .…”

Section: Discussionmentioning

confidence: 99%

“…femoral and subclavian veins) during exercise following a short warm‐up period reflect the increase in contracting skeletal muscle tissue and blood temperature (Sproule & Archer, 1959; Saltin & Hermansen, 1966), owing to elevations in heat production during muscle contraction (González‐Alonso et al . 2000), and the simultaneous rapid thermal equilibration between tissues and vessels (He et al .…”

Section: Discussionmentioning

confidence: 99%

“…Local tissue and blood temperature ( T B ) increases with elevations in skeletal muscle metabolism and heat production during dynamic exercise (Sproule & Archer, 1959; Saltin & Hermansen, 1966; González‐Alonso et al . 1999, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…The net heat transfer from the exercising limbs to the trunk and head results in increased core and brain temperatures (Saltin et al . 1966; Nybo et al . 2002; Kenny et al .…”

Section: Introductionmentioning

confidence: 99%

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Blood temperature and perfusion to exercising and non‐exercising human limbs

González‐Alonso

Calbet

Boushel

et al. 2015

Experimental Physiology

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New Findings What is the central question of this study? Temperature‐sensitive mechanisms are thought to contribute to blood‐flow regulation, but the relationship between exercising and non‐exercising limb perfusion and blood temperature is not established. What is the main finding and its importance? The close coupling among perfusion, blood temperature and aerobic metabolism in exercising and non‐exercising extremities across different exercise modalities and activity levels and the tight association between limb vasodilatation and increases in plasma ATP suggest that both temperature‐ and metabolism‐sensitive mechanisms are important for the control of human limb perfusion, possibly by activating ATP release from the erythrocytes. Temperature‐sensitive mechanisms may contribute to blood‐flow regulation, but the influence of temperature on perfusion to exercising and non‐exercising human limbs is not established. Blood temperature (T B), blood flow and oxygen uptake (trueV˙O2) in the legs and arms were measured in 16 healthy humans during 90 min of leg and arm exercise and during exhaustive incremental leg or arm exercise. During prolonged exercise, leg blood flow (LBF) was fourfold higher than arm blood flow (ABF) in association with higher T B and limb trueV˙O2. Leg and arm vascular conductance during exercise compared with rest was related closely to T B (r 2 = 0.91; P < 0.05), plasma ATP (r 2 = 0.94; P < 0.05) and limb V˙normalO2 (r 2 = 0.99; P < 0.05). During incremental leg exercise, LBF increased in association with elevations in T B and limb trueV˙O2, whereas ABF, arm T B and V˙normalO2 remained largely unchanged. During incremental arm exercise, both ABF and LBF increased in relationship to similar increases in trueV˙O2. In 12 trained males, increases in femoral T B and LBF during incremental leg exercise were mirrored by similar pulmonary artery T B and cardiac output dynamics, suggesting that processes in active limbs dominate central temperature and perfusion responses. The present data reveal a close coupling among perfusion, T B and aerobic metabolism in exercising and non‐exercising extremities and a tight association between limb vasodilatation and increases in plasma ATP. These findings suggest that temperature and V˙normalO2 contribute to the regulation of limb perfusion through control of intravascular ATP.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The net heat transfer from the exercising limbs to the trunk and head results in increased core and brain temperatures (Saltin et al . 1966; Nybo et al . 2002; Kenny et al .…”

Section: Introductionmentioning

confidence: 99%

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Blood temperature and perfusion to exercising and non‐exercising human limbs

González‐Alonso

Calbet

Boushel

et al. 2015

Experimental Physiology

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“…The difference between sites is possibly due to differences in local heat dissipation between sites and, with regards to rectal temperature, some heat gain from nearby intrapelvic muscles (Aulick et al,, 1981). Both Saltin and Hermansen (1966) and Gant et al (2004) noted a c orrelation between exercise intensity (%VO 2max ) and rectal temperature during lower body exercise suggesting that rectal temperature was dependent on exercise intensity. However, the present study showed no correlation between the percentage of V  O 2peak with core temperature responses pre and post training suggesting that there may be differences in heat dissipation between upper and lower body exercise and core temperature estimates.…”

Section: Discussionmentioning

confidence: 97%

The effect of arm training on thermoregulatory responses and calf volume during upper body exercise

Bottoms

2014

Eur J Appl Physiol

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Abstract:Purpose: The smaller muscle mass of the upper body compared to the lower body may elicit a smaller thermoregulatory stimulus during exercise and thus produce novel training induced thermoregulatory adaptations. Therefore, the principal aim of the study was to examine the effect of arm training on thermoregulatory responses during submaximal exercise. Methods: Thirteen healthy male participants (Mean ±SD age 27.8 ±5.0yrs, body mass 74.8 ±9.5kg) took part in 8 weeks of arm crank ergometry training. Thermoregulatory and calf blood flow responses were measured during 30 minutes of arm cranking at 60% peak power (W peak ) pre, and post training and post training at the same absolute intensity as pre training. Core temperature and skin temperatures were measured, along with heat flow at the calf, thigh, upper arm and chest. Calf blood flow using venous occlusion plethysmography was performed pre and post exercise and calf volume was determined during exercise. Results: The upper body training reduced aural temperature (0.1 ±0.3ºC) and heat storage (0.3 ±0.2 J.g -1 ) at a given power output as a result of increased whole body sweating and heat flow. Arm crank training produced a smaller change in calf volume post training at the same absolute exercise intensity (-1.2 ±0.8% compared to -2.2 ±0.9% pre training; P<.05) suggesting reduced leg vasoconstriction. Conclusion: Training improved the main markers of aerobic fitness. However, the results of this study suggest arm crank training additionally elicits physiological responses specific to the lower body which may aid thermoregulation.

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Endurance Exercise and the Regulation of Visceral and Cutaneous Blood Flow

Johnson¹

2000

Endurance in Sport

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Esophageal, rectal, and muscle temperature during exercise

Cited by 474 publications

References 0 publications

Blood temperature and perfusion to exercising and non‐exercising human limbs

Blood temperature and perfusion to exercising and non‐exercising human limbs

The effect of arm training on thermoregulatory responses and calf volume during upper body exercise

Endurance Exercise and the Regulation of Visceral and Cutaneous Blood Flow

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