Abstract:
:Álvarez-Herms, Jesús, Sonia Julià-Sánchez, Hannes Gatterer, Francisco Corbi, Gines Viscor, and Martin Burtscher. Effects of a single power strength training session on heart rate variability when performed at different simulated altitudes. High Alt Med Biol. 21:292-296, 2020. Background: This study assessed heart rate variability (HRV) after a single power strength training session performed at different hypoxic levels. Materials and Methods: Eight physically active subjects (31.1 ± 4.3 years; 177.6 ± 3.0 cm; 70.1 ± 5.2 kg) performed 6 bouts of 15-second continuous maximal jump exercises interspersed by 3 minutes of rest at different altitude levels (total volume of each session: 20 minutes). The normoxic hypoxia levels were FiO2 low altitude: 20.9%; moderate altitude: 16.5%; and high altitude: 13.5%. Results: Average power output during the jumps was similar for all conditions (≅3150 W). Twenty-four hours before (PRE) and 24 hours after (POST) each training session, HRV parameters (R-R, square root of the mean of the sum of differences between intervals [RMSSD], pNN50, and very low frequency, low frequency, and high frequency) were determined without resulting in significant statistical differences, neither from PRE to POST nor between conditions (p > 0.05). Conclusions: This study showed a negligible perturbation of HRV parameters 24 hours after a single power strength session up to a hypoxic level equivalent to 4000 m. Further studies are needed to determine the hypoxia-dependent threshold and intensities of training loads affecting HRV.
journal_name
High Alt Med Bioljournal_title
High altitude medicine & biologyauthors
Álvarez-Herms J,Julià-Sánchez S,Gatterer H,Corbi F,Viscor G,Burtscher Mdoi
10.1089/ham.2020.0014subject
Has Abstractpub_date
2020-09-01 00:00:00pages
292-296issue
3eissn
1527-0297issn
1557-8682journal_volume
21pub_type
杂志文章abstract::High altitude training is a widely used strategy for improving aerobic exercise performance. Both Rhodiola crenulata (R) and Cordyceps sinensis (C) supplements have been reported to improve exercise performance. However, it is not clear whether the provision of R and C during high altitude training could further enhan...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2013.1114
更新日期:2014-09-01 00:00:00
abstract::Jiang, Tao, Liping Zhao, Yanbo Yin, Huiqian Yu, and Qingzhong Li. Evaluation of middle ear function by tympanometry and the influence of lower barometric pressure at high altitude. High Alt Med Biol 00:000-000, 2020. Objective: To evaluate middle ear function in residents ...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2020.0042
更新日期:2020-12-31 00:00:00
abstract::The efficacy and safety of intermittent hypoxia training (IHT) were investigated in healthy, 60- to 74-yr-old men. Fourteen men (Gr 1) who routinely exercised daily for 20 to 30 min were compared with 21 (Gr 2) who avoided exercise. Their submaximal work-load power values before the IHT training were 94 +/- 3.7 and 66...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2007.1053
更新日期:2008-04-01 00:00:00
abstract::Shatylo, Valerii B., Tetiana V. Serebrovska, Anna V. Gavalko, Egor Egorov, and Oleg V. Korkushko. Acute hypoxic test in patients with prediabetes. High Alt Med Biol. 17:101-107, 2016.-Prediabetes is a state of impaired carbohydrate metabolism when not all of the symptoms required to label a person as diabetic are pres...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2015.0117
更新日期:2016-06-01 00:00:00
abstract::In hypobaric hypoxia (HH) at high altitude, the immune responses are changed probably due to oxidative stress-induced production of free radicals and nonradicals. Vitamin E is an antioxidant and protects the cells from oxidative damage. The present study was carried out to study the antioxidant role of vitamin E on th...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2018.0045
更新日期:2019-03-01 00:00:00
abstract::West, John B. Are permanent residents of high altitude fully adapted to their hypoxic environment? High Alt Med Biol. 18:135-139, 2017.-Millions of people live permanently at high altitude and many have been there for generations. It is sometimes claimed that these people have completely adapted to their environment, ...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2016.0152
更新日期:2017-06-01 00:00:00
abstract::The purpose of high altitude continuing medical education is to adapt knowledge and skills for practical application on the plateau. Most trainees have experience with academic education and grassroots work experience on the plateau, so they want knowledge about new advances in the pathogenesis, diagnosis, and treatme...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2012.1093
更新日期:2013-06-01 00:00:00
abstract::The aims of the present study were to measure the satiety neuropeptide cholecystokinin (CCK) in humans at terrestrial high altitude to investigate its possible role in the pathophysiology of anorexia, cachexia, and acute mountain sickness (AMS). Nineteen male mountaineers aged 38 +/- 12 years participated in a 20 +/- ...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/152702900320649
更新日期:2000-04-01 00:00:00
abstract::The phosphodiesterase-5 inhibitor sildenafil has been reported to improve hypoxic exercise capacity, but the mechanisms accounting for this observation remain incompletely understood. Sixteen healthy subjects were included in a randomized, double-blind, placebo-controlled, cross-over study on the effects of 50-mg sild...
journal_title:High altitude medicine & biology
pub_type: 杂志文章,随机对照试验
doi:10.1089/ham.2007.1058
更新日期:2007-07-01 00:00:00
abstract::To investigate the determinants of acute mountain sickness (AMS) and of summiting in expedition-style mountaineering, 919 mountaineers (15.4% female) leaving Aconcagua Provincial Park at the end of an expedition to Mt. Aconcagua (6962 m) via the normal route were retrospectively evaluated by questionnaires. Symptoms o...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2005.6.158
更新日期:2005-07-01 00:00:00
abstract:: Background: Hypobaric hypoxia (HH) increases the risk of high altitude-related illnesses (HARI). The pathophysiological mechanism(s) involved are still partially unknown. Altered vascular reactivity as consequence of endothelial dysfunction during HH might play a role in t...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2018.0128
更新日期:2019-06-01 00:00:00
abstract::Over the past 40 years, in an attempt to reduce the morbidity and mortality of altitude illness, a number of volunteer-run, seasonal aid posts have been established at mountain ranges across the world. As each aid post is designed for the local population and tourists at hand, the range of problems seen and services o...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2019.0052
更新日期:2019-12-01 00:00:00
abstract::Exposure to hypoxic environments is associated with decreased arterial oxygen saturation and increased pulmonary artery pressures. Ischemic preconditioning of an extremity (IPC) is a procedure that stimulates vasoactive and inflammatory pathways that protect remote organ systems from ongoing or future ischemic injury....
journal_title:High altitude medicine & biology
pub_type: 杂志文章,随机对照试验
doi:10.1089/ham.2013.1137
更新日期:2014-06-01 00:00:00
abstract::We conducted a survey of equipment in medical backpacks for mountain rescuers and mountain emergency physicians. The aim was to investigate whether there are standards for medical equipment in mountain rescue organizations associated with the International Commission for Mountain Emergency Medicine (ICAR MEDCOM). A qu...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2010.1048
更新日期:2011-01-01 00:00:00
abstract::Ha, Hoehun. Geographic variation in mentally unhealthy days: air pollution and altitude perspectives. High Alt Med Biol. 18:258-266, 2017. BACKGROUND:Mental health incorporates our emotional, psychological, and social well-being and it is critical at each phase of life, from youth and preadulthood through adulthood. ...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2016.0137
更新日期:2017-09-01 00:00:00
abstract::The purpose of this study was to compare three commonly used scoring systems of acute mountain sickness (AMS)-the 5-item Lake Louise Self-report (LLS), the 11-item abridged version of the Environmental Symptoms Questionnaire (ESQ-III), and a 100 mm visual analog scale (VAS)-on climbers (N=63; 34.6±9.9 years) making a ...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2012.1030
更新日期:2012-12-01 00:00:00
abstract:: Aims: Psychotic symptoms during exposure to high altitude (HA) have been linked to accidents or near accidents on the mountains. It is thus of great importance to directly identify psychotic symptoms in individuals who are exposed to HA quickly and reliably on the mountain...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2019.0009
更新日期:2019-12-01 00:00:00
abstract::Given the high inter-individual variability in the sensitivity to high altitude, we hypothesize the presence of underlying genetic factors. The aim of this study was to construct a genetic predisposition score based on previously identified high-altitude gene variants to explain the inter-individual variation in the r...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2014.1083
更新日期:2015-03-01 00:00:00
abstract::Completing a marathon (42.2 km) is one of the more challenging sports activities. Besides the distance, the ambient conditions of the race (altitude, temperature, etc) can increase the physiological demands of the event. The purpose of this study was to investigate the relation between the altitude of the city in whic...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2013.1060
更新日期:2014-04-01 00:00:00
abstract::Appointing physiological function to specific genetic determinants requires a systems physiologist to consider ways of assessing precise phenotypic mechanisms. The integration of ventilation, metabolism and thermoregulation, for example, is very complex and may differ among small and large mammalian species. This chal...
journal_title:High altitude medicine & biology
pub_type: 杂志文章,评审
doi:10.1089/152702901750265297
更新日期:2001-07-01 00:00:00
abstract::We describe the case of a 38-year-old man who presented with bilateral retinal detachments following a trek in Tibet during which time he took acetazolamide for prophylaxis of acute mountain sickness (AMS). This is the first time that retinal detachment has been described following a sojourn to high altitude. Acetazol...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2007.1026
更新日期:2007-01-01 00:00:00
abstract::Keyes, Linda E., Thomas Douglas Sallade, Charles Duke, Jennifer Starling, Alison Sheets, Sushil Pant, David S. Young, David Twillman, Nirajan Regmi, Benoit Phelan, Purshotam Paudel, Matthew McElwee, Luke Mather, Devlin Cole, Theodore McConnell, and Buddha Basnyat. Blood pressure and altitude: an observational cohort s...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2017.0001
更新日期:2017-09-01 00:00:00
abstract::Gou, Qiling, Rufeng Shi, Xin Zhang, Qingtao Meng, Xinran Li, Xi Rong, Zhabu Gawa, Nage Zhuoma, and Xiaoping Chen. The prevalence and risk factors of high-altitude pulmonary hypertension among native Tibetans in Sichuan Province, China. High Alt Med Biol. 21:327-335, 2020. Background: ...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2020.0022
更新日期:2020-12-01 00:00:00
abstract::Richalet, Jean-Paul, and François J. Lhuissier. Aging, tolerance to high altitude, and cardiorespiratory response to hypoxia. High Alt Med Biol. 16:117-124, 2015.--It is generally accepted that aging is rather protective, at least at moderate altitude. Some anecdotal reports even mention successful ascent of peaks ove...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2015.0030
更新日期:2015-06-01 00:00:00
abstract::Hypoxia can be defined as a reduction in available oxygen, whether in a whole organism or in a tissue or cell. It is a real life cause of pulmonary hypertension in humans both in terms of patients with chronic hypoxic lung disease and people living at high altitude. The effect of hypoxia on the pulmonary vasculature c...
journal_title:High altitude medicine & biology
pub_type: 杂志文章,评审
doi:10.1089/ham.2013.1016
更新日期:2013-06-01 00:00:00
abstract::Chronic mountain sickness (CMS) and high altitude pulmonary edema (HAPE) each occur rarely in Tibetans, and they have previously not been reported in the same person. Here we describe a 37-year-old native Tibetan man with CMS at 4300 m, who developed HAPE after his return home from a 12-day visit to sea level. Possibl...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/1527029041352081
更新日期:2004-07-01 00:00:00
abstract::Van Iterson, Erik H., Eric M. Snyder, and Bruce D. Johnson. The influence of 17 hours of normobaric hypoxia on parallel adjustments in exhaled nitric oxide and airway function in lowland healthy adults. High Alt Med Biol. 18:1-10, 2017.-Currently, there is a disparate understanding of the role that normobaric hypoxia ...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2016.0086
更新日期:2017-03-01 00:00:00
abstract::The influence of oxygen pressure on placental and villous vascular development is reviewed and considered relative to the natural experiment afforded by residence at high altitude. Data obtained from normal high altitude pregnancies are compared with those from IUGR and preeclampsia, conditions believed to be caused b...
journal_title:High altitude medicine & biology
pub_type: 杂志文章,评审
doi:10.1089/152702903322022785
更新日期:2003-07-01 00:00:00
abstract::Although thousands of people ascend 4205 m to visit the summit of Mauna Kea each year, there has been no information on the rate of altitude illness triggered by such visits. Two surveys were used: one for tourists driving up to the summit and the other for summit astronomy workers staying at lodging facilities at int...
journal_title:High altitude medicine & biology
pub_type: 杂志文章
doi:10.1089/ham.2007.8307
更新日期:2007-10-01 00:00:00
abstract::The purpose of this study was to elucidate the magnitude and the time course of ventilatory changes resulting from a repeated series of hypoxic exposures. Eight healthy males participated in the present study. The subjects spent 1 h/day in normobaric hypoxia (12% inspired oxygen). Inspired minute ventilation (V(I)), e...
journal_title:High altitude medicine & biology
pub_type: 临床试验,杂志文章
doi:10.1089/ham.2005.6.50
更新日期:2005-04-01 00:00:00