scholarly journals Rhodiola crenulata- and Cordyceps sinensis-Based Supplement Boosts Aerobic Exercise Performance after Short-Term High Altitude Training

2014 ◽  
Vol 15 (3) ◽  
pp. 371-379 ◽  
Author(s):  
Chung-Yu Chen ◽  
Chien-Wen Hou ◽  
Jeffrey R. Bernard ◽  
Chiu-Chou Chen ◽  
Ta-Cheng Hung ◽  
...  
Keyword(s):  
Aerobic Exercise ◽  
High Altitude ◽  
Exercise Performance ◽  
Cordyceps Sinensis ◽  
Altitude Training ◽  
Short Term ◽  
Rhodiola Crenulata

scholarly journals Autophagy Is a Promoter for Aerobic Exercise Performance during High Altitude Training

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Ying Zhang ◽  
Ning Chen
Keyword(s):  
Aerobic Exercise ◽  
High Altitude ◽  
Exercise Performance ◽  
Molecular Mechanisms ◽  
The Body ◽  
Altitude Training ◽  
Adaptive Responses ◽  
Effective Strategies ◽  
Exercise Induced ◽  
Cellular Components

High altitude training is one of the effective strategies for improving aerobic exercise performance at sea level via altitude acclimatization, thereby improving oxygen transport and/or utilization. But its underlying molecular mechanisms on physiological functions and exercise performance of athletes are still vague. More recent evidence suggests that the recycling of cellular components by autophagy is an important process of the body involved in the adaptive responses to exercise. Whether high altitude training can activate autophagy or whether high altitude training can improve exercise performance through exercise-induced autophagy is still unclear. In this narrative review article, we will summarize current research advances in the improvement of exercise performance through high altitude training and its reasonable molecular mechanisms associated with autophagy, which will provide a new field to explore the molecular mechanisms of adaptive response to high altitude training.

scholarly journals The influence of short-term high altitude training on inflammatory and prooxidative-antioxidative indices in alpine ski athletes

2011 ◽  
Vol 27 (1) ◽  
Author(s):  
H. Elegańczyk-Kot ◽  
A. Nowak ◽  
J. Karolkiewicz ◽  
M. Laurentowska ◽  
B. Pospieszna ◽  
...  
Keyword(s):  
High Altitude ◽  
Altitude Training ◽  
Short Term

scholarly journals Effects of carbohydrate supplementation on aerobic exercise performance during acute high altitude exposure and after 22 days of acclimatization and energy deficit

2020 ◽  
Vol 17 (1) ◽  
Author(s):  
Karleigh E. Bradbury ◽  
Claire E. Berryman ◽  
Marques A. Wilson ◽  
Adam J. Luippold ◽  
Robert W. Kenefick ◽  
...  
Keyword(s):  
Aerobic Exercise ◽  
High Altitude ◽  
Exercise Performance ◽  
Time Trial ◽  
Energy Deficit ◽  
Trial Duration ◽  
Carbohydrate Supplementation ◽  
Altitude Exposure ◽  
Ergogenic Effects ◽  
Before And After

Abstract Background The ergogenic effects of supplemental carbohydrate on aerobic exercise performance at high altitude (HA) may be modulated by acclimatization status. Longitudinal evaluation of potential performance benefits of carbohydrate supplementation in the same volunteers before and after acclimatization to HA have not been reported. Purpose This study examined how consuming carbohydrate affected 2-mile time trial performance in lowlanders at HA (4300 m) before and after acclimatization. Methods Fourteen unacclimatized men performed 80 min of metabolically-matched (~ 1.7 L/min) treadmill walking at sea level (SL), after ~ 5 h of acute HA exposure, and after 22 days of HA acclimatization and concomitant 40% energy deficit (chronic HA). Before, and every 20 min during walking, participants consumed either carbohydrate (CHO, n = 8; 65.25 g fructose + 79.75 g glucose, 1.8 g carbohydrate/min) or flavor-matched placebo (PLA, n = 6) beverages. A self-paced 2-mile treadmill time trial was performed immediately after completing the 80-min walk. Results There were no differences (P > 0.05) in time trial duration between CHO and PLA at SL, acute HA, or chronic HA. Time trial duration was longer (P < 0.05) at acute HA (mean ± SD; 27.3 ± 6.3 min) compared to chronic HA (23.6 ± 4.5 min) and SL (17.6 ± 3.6 min); however, time trial duration at chronic HA was still longer than SL (P < 0.05). Conclusion These data suggest that carbohydrate supplementation does not enhance aerobic exercise performance in lowlanders acutely exposed or acclimatized to HA. Trial registration NCT, NCT02731066, Registered March 292,016

Value of the Application of the Heart Rate Performance Curve in Sports

2010 ◽  
Vol 5 (4) ◽  
pp. 437-447 ◽  
Author(s):  
Peter Hofmann ◽  
Rochus Pokan
Keyword(s):  
Heart Rate ◽  
Aerobic Exercise ◽  
Exercise Performance ◽  
Large Scale ◽  
Altitude Training ◽  
Performance Curve ◽  
Rate Performance ◽  
Turn Point ◽  
Related Field ◽  
Noninvasive Test

The heart rate performance curve (HRPC) has been shown to be nonlinearly related to work load. This phenomenon has been used to determine a defection point and to be related to the lactate anaerobic threshold. The original method was heavily criticized, and the method was challenged by several authors. However, some authors also demonstrated a high value for this method’s application in various sports conditions. Unfortunately, the HRPC was shown to be not uniform and three different patterns were found. Basic investigations have shown a dependence of the HR-defection on beta1-receptor sensitivity, which gave a plausible explanation of the phenomenon. Important details regarding the testing protocol and the method of turn point determination are given in this review. As a conclusion, we may state that based on numerous studies the method is plausible and valid to determine aerobic exercise performance in various laboratory ergometer and specific sports-related field conditions. Standard protocol conditions adjusted to the exercise performance level of subjects and a computer-supported determination of turn points are necessary to obtain reliable results. Large-scale investigations to validate the heart rate turn point with maximal lactate steady state are still needed. However, from the available literature, the application of this noninvasive method can be recommended to determine aerobic exercise performance in various sports. This noninvasive test is easy to perform repeatedly, which gives interesting possibilities for the monitoring of training adaptation in the short term, such as altitude training or specifc taper forms.

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