Thermal responses during training in a temperate climate

Shvartz, E; Magazanik, A; Glick, Z.

doi:10.1152/jappl.1974.36.5.572

Cited by 32 publications

(23 citation statements)

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“…It has been suggested that lower body temperature in the excessively obese may be an adaptation to reduced ability to dissipate heat (Chudecka et al 2014) to provide a buffer from incurring an excessively high temperature when ambient temperature is high and/or during physical exertion not unlike the adaptive response observed in heat trained athletes (Shvartz et al 1974). Under this scenario, a lower temperature could indicate more severe obesity and/or compromised cooling ability which, in turn, may threaten endurance performance and promote faster decline.…”

Section: Discussionmentioning

confidence: 99%

“…Studies of active well elderly however do not observe a lower amplitude (Gubin et al 2006), and sex-related differences may reflect dissimilar physical activity behavior (Gubin et al 2006). It is thought that the nadir best reflects the basal set point (Kelly 2006) which, in turn, may best reflect health-related attributes as both caloric restriction and athletic conditioning (Shvartz et al 1974;McLellan 2001;Baum et al 1976) appear to lower basal temperature.…”

Section: Introductionmentioning

confidence: 99%

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Basal body temperature as a biomarker of healthy aging

Simonsick

Meier

Shaffer

et al. 2016

AGE

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Scattered evidence indicates that a lower basal body temperature may be associated with prolonged health span, yet few studies have directly evaluated this relationship. We examined cross-sectional and longitudinal associations between early morning oral temperature (95.0-98.6°F) and usual gait speed, endurance walk performance, fatigability, and grip strength in 762 non-frail men (52 %) and women aged 65-89 years participating in the Baltimore Longitudinal Study of Aging. Since excessive adiposity (body mass index ≥35 kg/m 2 or waist-to-height ratio ≥0.62) may alter temperature set point, associations were also examined within adiposity strata. Overall, controlling for age, race, sex, height, exercise, and adiposity, lower temperature was associated with faster gait speed, less time to walk 400 m quickly, and lower perceived exertion following 5-min of walking at 0.67 m/s (all p ≤ 0.02). In the nonadipose (N = 662), these associations were more robust (all p ≤ 0.006). Direction of association was reversed in the adipose (N = 100), but none attained significance (all p > 0.22). Over 2.2 years, basal temperature was not associated with functional change in the overall population or non-adipose. Among the adipose, lower baseline temperature was associated with greater decline in endurance walking performance (p = 0.006). In longitudinal analyses predicting future functional performance, low temperature in the non-adipose was associated with faster gait speed (p = 0.021) and less time to walk 400 m quickly (p = 0.003), whereas in the adipose, lower temperature was associated with slower gait speed (p = 0.05) and more time to walk 400 m (p = 0.008). In older adults, lower basal body temperature appears to be associated with healthy aging in the absence of excessive adiposity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Basal body temperature as a biomarker of healthy aging

Simonsick

Meier

Shaffer

et al. 2016

AGE

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“…In the available literature on the subject, some studies reported that trained individuals had an overall smaller increase of rectal temperature [5][6][7][8]. One of the important physiological benefits of physical training is an increased ability to dissipate heat from the body (as an increase to reaction rate and sweating dynamics and a decrease in the allowance of internal temperature rise).…”

Section: Introductionmentioning

confidence: 99%

The use of thermal imaging to evaluate body temperature changes of athletes during training and a study on the impact of physiological and morphological factors on skin temperature

Chudecka¹,

Lubkowska²

2018

Hum Mov.

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Purpose. The aim of this study was to assess the temperature changes of selected body surfaces (the arm and forearm) as a res ponse to 90minute physical exercise as well as to analyze the impact of physiological and morphological factors on the dynamics of temperature change. Methods. A study group that consisted of 12 professional volleyball players was subjected to endurance training which lasted 90 minutes. Numerous physiological and morphological factors were measured, with mean temperatures registered from the body surface of the upper extremities before, immediately after, and ten min after physical effort by a thermal camera (SC500 ThermaCAM camera) at room temperature. Results. After physical exercise, a fall in skin temperature result ing from prolonged sweating during the dynamic exercise tests was observed. The temperature changes in volleyball players, recorded in a series of tests, were found to be larger on the front surfaces of their upper extremities when compared to the rear. In addition, statistically significant positive correlation between maximum oxygen uptake (VO 2max ) and %Hr max , calculated with the decrease in skin temperatures, was found. Conclusions. The strong and statistically significant influence of maximum oxygen uptake on the drop in surface temperature of the upper extremities (arm and forearm) immediately after the exercise indicates that thermography can be used as an additional, noninvasive method that provides information on a player's fitness level in comparison to other athletes.

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“…Usual physiological adaptations during heat acclimation, that occur irrespective of the acclimation modality, include: a reduction in resting heart rate in the heat [27], decreased resting core temperature [8], increase in plasma volume [28], decrease in rectal and skin temperature [29], change in sweat composition [30], reduction in the sweating threshold [31] and an increase in sweating efficiency [29].…”

Section: Ambient Working Environmentmentioning

confidence: 99%

“…Buono et al [8] had a protocol which required their participants to exercise for 7 consecutive days for four bouts of 25 min with a 5 min rest while treadmill walking (1.34 m·s -1 at a 3% grade) and cycling (75 W at 35°C at 75% RH). Shvartz and colleagues [29] used a bench step protocol which equated to a load equal to 85% V  O 2max during ambient conditions of 21.5°C DB, 17.5°C WB, for 12 days. Two hour treadmill walks for 9 days in humid heat (37°C, 74% RH) was used by Garden et al [32] for their acclimation protocol.…”

Section: Ambient Working Environmentmentioning

confidence: 99%