Effects of Two Short-Term, Intermittent Hypoxic Training Protocols on the Finger Temperature Response to Local Cold Stress

2015 ◽  
Vol 16 (3) ◽  
pp. 251-260 ◽  
Author(s):  
Michail E. Keramidas ◽  
Stylianos N. Kounalakis ◽  
Ola Eiken ◽  
Igor B. Mekjavic
Keyword(s):  
Cold Stress ◽  
Temperature Response ◽  
Short Term ◽  
Finger Temperature ◽  
Intermittent Hypoxic Training ◽  
Hypoxic Training ◽  
Training Protocols

A 10-day confinement to normobaric hypoxia impairs toe, but not finger temperature response during local cold stress

2017 ◽  
Vol 64 ◽  
pp. 109-115 ◽  
Author(s):  
Stylianos N. Kounalakis ◽  
Michail E. Keramidas ◽  
Mojca Amon ◽  
Ola Eiken ◽  
Igor B. Mekjavic
Keyword(s):  
Cold Stress ◽  
Temperature Response ◽  
Normobaric Hypoxia ◽  
Finger Temperature

scholarly journals Reproducibility of Skin Temperature Response after Cold Stress Test Using the Game Ready System: Preliminary Study

2021 ◽  
Vol 18 (16) ◽  
pp. 8295
Author(s):  
Jose Ignacio Priego-Quesada ◽  
Alexis Gandia-Soriano ◽  
Maria Teresa Pellicer-Chenoll ◽  
Ignacio Catalá-Vilaplana ◽  
Jose Luis Bermejo-Ruiz ◽  
...  
Keyword(s):  
Cold Stress ◽  
Skin Temperature ◽  
Stress Test ◽  
Intraclass Correlation ◽  
Temperature Response ◽  
Lower Limbs ◽  
Good Reproducibility ◽  
Preliminary Study ◽  
Logarithmic Equation ◽  
Cold Stress Test

The objective of this preliminary study was to determine the reproducibility of lower limbs skin temperature after cold stress test using the Game Ready system. Skin temperature of fourteen participants was measured before and after cold stress test using the Game Ready system and it was repeated the protocol in four times: at 9:00, at 11:00, at 19:00, and at 9:00 h of the posterior day. To assess skin temperature recovery after cold stress test, a logarithmic equation for each region was calculated, and constant (β0) and slope (β1) coefficients were obtained. Intraclass correlation coefficient (ICC), standard error (SE), and within-subject coefficient of variation (CV) were determined. No differences were observed between measurement times in any of the regions for the logarithmic coefficients (p > 0.38). Anterior thigh (β0 ICC 0.33–0.47; β1 ICC 0.31–0.43) and posterior knee (β0 ICC 0.42–0.58; β1 ICC 0.28–0.57) were the regions with the lower ICCs, and the other regions presented values with a fair and good reproducibility (ICC > 0.41). Posterior leg was the region with the better reproducibility (β0 ICC 0.68–0.78; β1 ICC 0.59–0.74; SE 3–4%; within-subject CV 7–12%). In conclusion, cold stress test using Game Ready system showed a fair and good reproducibility, especially when the posterior leg was the region assessed.

The short-term temperature response to smoke from oil fires

1991 ◽  
Vol 18 (10) ◽  
pp. 1873-1876 ◽  
Author(s):  
Douglas L. Westphal ◽  
Owen B. Toon
Keyword(s):  
Temperature Response ◽  
Short Term

scholarly journals Effect of intermittent hypoxic training on orthostatic tolerance in humans before and after simulated microgravity

2020 ◽  
Author(s):  
VP Katuntsev ◽  
TV Sukhostavtseva ◽  
AN Kotov ◽  
MV Baranov
Keyword(s):  
Orthostatic Intolerance ◽  
Bed Rest ◽  
Daily Basis ◽  
Tilt Test ◽  
Control Group ◽  
Orthostatic Tolerance ◽  
Pronounced Increase ◽  
Intermittent Hypoxic Training ◽  
Hypoxic Training ◽  
Before And After

Reduced orthostatic tolerance (OT) is a serious concern facing space medicine. This work sought to evaluate the effects of intermittent hypoxic training (IHT) on OT in humans before and after 3 days of head-down bed rest (HDBR) used to model microgravity. The study was carried out in 16 male volunteers aged 18 to 40 years and included 2 series of experiments with 11-day and 21-day IHT administered on a daily basis. During the first IHT session, the concentration of oxygen in the inspired gas mixture was 10%; for other sessions it was adjusted to 9%. OT was assessed by a 20-minute-long orthostatic tilt test (OTT) conducted before and after HDBR. Before HDBR, orthostatic intolerance was observed in 3 participants, while after HDBR, it was observed in 9 of 16 volunteers (p < 0.05). During OTT conducted after HDBR, the heart rate (HR) exceeded control values by 26.8% (p < 0.01). Preexposure to any of the applied IHT regimens led to a reduction in the number of volunteers with orthostatic intolerance. After the 11-day IHT program, there was a less pronounced increase in HR during OTT before HDBR; with the extended IHT regimen, less pronounced changes were observed for HR, systolic, diastolic and mean blood pressure (BP). The increase in HR during OTT after HDBR was significantly lower in the group that had completed the 11-day IHT program, while BP remained stable. The changes in HR and systolic BP were less pronounced in the group that had completed the 21-day IHT program than in the control group (p < 0.05). Thus, IHT reduced the risk of orthostatic disorders and mitigated changes in cardiovascular parameters during the orthostatic test.

scholarly journals INFLUENCES OF SHORT-TERM NORMOBARIC HYPOXIC TRAINING ON METABOLIC SYNDROME-RELATED MARKERS IN OVERWEIGHT AND NORMAL-WEIGHT MEN

2018 ◽  
Vol 14 (1) ◽  
pp. e44-e52
Author(s):  
Sohee Shin ◽  
Toshio Matsuoka ◽  
Wi-Young So
Keyword(s):  
Metabolic Syndrome ◽  
Heart Rate ◽  
Density Lipoprotein ◽  
Exercise Group ◽  
Normal Weight ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Short Term ◽  
Hypoxic Training ◽  
Weight Groups

Background and Objective This study examined the influence of short-term normobaric hypoxic training on metabolic syndrome-related markers in overweight and normal-weight men. Material and Methods Forty-one Japanese men were included and were divided into two groups based on their body mass indices (BMIs): BMI≥25 or BMI<25. Participants in the overweight and normal-weight groups were randomly classified into the hypoxic exercise group (hypoxic overweight, HO; hypoxic normal-weight, HN) and the normoxic exercise group (normoxic overweight, NO; normoxic normal-weight, NN). Subjects performed treadmill exercise three days per week for four weeks at an exercise intensity of 60% of maximum heart rate, under either normobaric hypoxic or normobaric normoxic conditions, for 50 min (including 5 min warm-up and cool-down periods) after a 30-min rest period. The study parameters included weight, body fat percentage, BMI, heart rate, waist circumference, ankle-brachial pulse wave velocity (PWV), blood sugar, triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), fasting insulin, Homeostasis Model Assessment of Insulin Resistance (HOMA-IR) scores, and adiponectin levels. Repeated measures two-way analysis of variance was used to examine differences in the mean parameter values between the two groups (overweight and normal-weight) before and after training. Results Hypoxic training improved the weight, body fat percentage, BMI, waist circumference, PWV, TC, LDL-C levels, and HOMA-IR scores in the overweight and normal-weight groups (p<0.05). In addition, TG level, HDL-C level, and HOMA-IR scores showed significant interactions with hypoxic training, as these parameters improved in the hypoxic overweight group (p<0.05). Conclusion These results suggest that hypoxic training could be useful for improving arterial stiffness, circulatory system function, body composition, and energy metabolism in adult males.

Effect of short-term cold stress on oxidative damage and transcript accumulation of defense-related genes in chickpea seedlings

2014 ◽  
Vol 171 (13) ◽  
pp. 1106-1116 ◽  
Author(s):  
Seyyedeh-Sanam Kazemi-Shahandashti ◽  
Reza Maali-Amiri ◽  
Hassan Zeinali ◽  
Mona Khazaei ◽  
Alireza Talei ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Cold Stress ◽  
Short Term ◽  
Transcript Accumulation
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