The response of human skeletal muscle tissue to hypoxiaCarsten Lundby
The Copenhagen Muscle Research Centre, Rigshospitalet Sect 7652, 2100, Copenhagen, Denmark
Cell Mol Life Sci 66:3615-23. 2009
..On the other hand, combining hypoxia with exercise appears to improve some aspects of muscle O(2) transport and/or metabolism...
Effects of strength training on muscle fatigue mapping from surface EMG and blood metabolitesMikel Izquierdo
Studies, Research and Sport Medicine Center, Government of Navarra, Pamplona, Navarra, Spain
Med Sci Sports Exerc 43:303-11. 2011
....
Iliopsoas and gluteal muscles are asymmetric in tennis players but not in soccer playersJoaquin Sanchis-Moysi
Physical Education Department, Las Palmas de Gran Canaria University, Las Palmas de Gran Canaria, Spain
PLoS ONE 6:e22858. 2011
..To determine the volume and degree of asymmetry of iliopsoas (IL) and gluteal muscles (GL) in tennis and soccer players...
Skeletal muscle signaling response to sprint exercise in men and womenTeresa Fuentes
Department of Physical Education, Campus Universitario de Tafira, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
Eur J Appl Physiol 112:1917-27. 2012
..Marked increases in AMPKα, ACCβ, STAT3 and ERK phosphorylation were observed after a single 30-s all-out sprint (Wingate test) in the vastus lateralis...
Skeletal muscle vasodilatation during maximal exercise in health and diseaseJose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria, 35017, Spain
J Physiol 590:6285-96. 2012
..This is likely to be critical for the maintenance of blood pressure in exercising patients with a limited heart pump capacity...
Air to muscle O2 delivery during exercise at altitudeJose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain
High Alt Med Biol 10:123-34. 2009
..In summary, hypoxia reduces Vo2max because it limits O2 diffusion in the lung...
Disparity in regional and systemic circulatory capacities: do they affect the regulation of the circulation?J A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s n, Las Palmas de Gran Canaria, Spain
Acta Physiol (Oxf) 199:393-406. 2010
..Finally, when approximately 80% of cardiac output is directed towards contracting skeletal muscle modest vasoconstriction in the active muscles can evoke marked changes in arterial pressure...
The exercising heart at altitudeJose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, 35017, Las Palmas de Gran Canaria, Canary Islands, Spain
Cell Mol Life Sci 66:3601-13. 2009
..Special emphasis is put on the cardioprotective effects of chronic hypoxia...
On the mechanisms that limit oxygen uptake during exercise in acute and chronic hypoxia: role of muscle massJose A L Calbet
The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen N, Denmark
J Physiol 587:477-90. 2009
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Is pulmonary gas exchange during exercise in hypoxia impaired with the increase of cardiac output?Jose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, 35017, Spain
Appl Physiol Nutr Metab 33:593-600. 2008
..It remains to be determined what is the influence of changes in cardiac output per se on pulmonary gas exchange during high-intensity exercise...
Increased oxidative stress and anaerobic energy release, but blunted Thr172-AMPKα phosphorylation, in response to sprint exercise in severe acute hypoxia in humansDavid Morales-Alamo
Department of Physical Education, University of Las Palmas de Gran Canaria Campus Universitario de Tafira Las Palmas de Gran Canaria, Spain
J Appl Physiol 113:917-28. 2012
..Collectively, our results indicate that the signaling response to sprint exercise in human skeletal muscle is altered in severe acute hypoxia, which abrogated Thr(172)-AMPKα phosphorylation, likely due to lower LKB1 activation by SIRT1...
During hypoxic exercise some vasoconstriction is needed to match O2 delivery with O2 demand at the microcirculatory levelCarsten Lundby
Copenhagen Muscle Research Center, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
J Physiol 586:123-30. 2008
..Peak cardiac output at altitude is not limited by excessive mean arterial pressure. Exercising leg .VO(2peak) is not limited by restricted vasodilatation in the altitude-acclimatized human...
Plasma volume expansion does not increase maximal cardiac output or VO2 max in lowlanders acclimatized to altitudeJose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, 35010 Canary Islands, Spain
Am J Physiol Heart Circ Physiol 287:H1214-24. 2004
..Furthermore, hemodilution caused by PV expansion at altitude is compensated for by increased systemic O2 extraction with similar peak muscular O2 delivery, such that maximal exercise capacity is unaffected...
Effects of weight lifting training combined with plyometric exercises on physical fitness, body composition, and knee extension velocity during kicking in footballJorge Perez-Gomez
Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Canary Island, Spain
Appl Physiol Nutr Metab 33:501-10. 2008
..In conclusion, 6 weeks of strength training combining weight lifting and plyometric exercises results in significant improvement of kicking performance, as well as other physical capacities related to success in football (soccer)...
Is sprint exercise a leptin signaling mimetic in human skeletal muscle?Borja Guerra
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain
J Appl Physiol 111:715-25. 2011
..In conclusion, sprint exercise performed under fasting conditions is a leptin signaling mimetic in human skeletal muscle...
Bone and lean mass inter-arm asymmetries in young male tennis players depend on training frequencyJoaquin Sanchis-Moysi
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s n, Las Palmas de Gran Canaria, 35017 Canary Island, Spain
Eur J Appl Physiol 110:83-90. 2010
..Young tennis players have increased BMC, bone area and lean mass in dominant arm, which magnitude depends on the number of weekly hours devoted to tennis...
SIRT1, AMP-activated protein kinase phosphorylation and downstream kinases in response to a single bout of sprint exercise: influence of glucose ingestionBorja Guerra
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, 35017, Las Palmas de Gran Canaria, Canary Islands, Spain
Eur J Appl Physiol 109:731-43. 2010
..In conclusion, glucose ingestion prior to a sprint exercise profoundly affects Thr(172)-AMPKalpha phosphorylation and its downstream signaling during the recovery period...
Osteocalcin as a negative regulator of serum leptin concentration in humans: insight from triathlon competitionsAmelia Guadalupe-Grau
Department of Physical Education, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Canary Island, Spain
Eur J Appl Physiol 110:635-43. 2010
..This study provides evidence for osteocalcin as a negative regulator of serum leptin in humans...
Androgen receptor gene polymorphisms lean mass and performance in young menAmelia Guadalupe-Grau
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafi ra s n, Las Palmas de Gran Canaria, 35017, Spain
Br J Sports Med 45:95-100. 2011
..11, p=0.06). In summary, the lengths of CAG and GGN repeat of the AR gene do not appear to influence lean mass or fitness in young men...
Gender dimorphism in skeletal muscle leptin receptors, serum leptin and insulin sensitivityBorja Guerra
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s n, Las Palmas de Gran Canaria, Spain
PLoS ONE 3:e3466. 2008
..The circulating form of the leptin receptor can not be used as a surrogate measure of the amount of leptin receptors expressed in skeletal muscles...
Pulmonary gas exchange at maximal exercise in Danish lowlanders during 8 wk of acclimatization to 4,100 m and in high-altitude Aymara nativesCarsten Lundby
The Copenhagen Muscle Research Centre, Rigshospitalet, Sect 7652, 9 Blegdamsvej, DK 2100 Copenhagen Ø, Denmark
Am J Physiol Regul Integr Comp Physiol 287:R1202-8. 2004
..4 mmHg). In conclusion, lowlanders substantially improve pulmonary gas exchange with acclimatization, but even acclimatization for 8 wk is insufficient to achieve levels reached by high-altitude natives...
Cardiac output and leg and arm blood flow during incremental exercise to exhaustion on the cycle ergometerJose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain
J Appl Physiol 103:969-78. 2007
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Androgen receptor gene polymorphisms and the fat-bone axis in young men and womenJesú Gustavo Ponce-González
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s n, Las Palmas de Gran Canaria, Spain
J Androl 33:644-50. 2012
..In young women, GGN length is positively associated with adiposity, leptin, and osteocalcin...
Bone mass and the CAG and GGN androgen receptor polymorphisms in young menAmelia Guadalupe-Grau
Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Canary Islands, Spain
PLoS ONE 5:e11529. 2010
..To determine whether androgen receptor (AR) CAG (polyglutamine) and GGN (polyglycine) polymorphisms influence bone mineral density (BMD), osteocalcin and free serum testosterone concentration in young men...
Chronic hypoxia increases blood pressure and noradrenaline spillover in healthy humansJose A L Calbet
The Copenhagen Muscle Research Centre, Copenhagen, Denmark
J Physiol 551:379-86. 2003
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Muscle hypertrophy and increased expression of leptin receptors in the musculus triceps brachii of the dominant arm in professional tennis playersHugo Olmedillas
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s n, 35017 Las Palmas de Gran Canaria, Canary Island, Spain
Eur J Appl Physiol 108:749-58. 2010
..Our findings are also consistent with a role of leptin signalling in muscle hypertrophy in healthy humans...
Critical role for free radicals on sprint exercise-induced CaMKII and AMPKα phosphorylation in human skeletal muscleDavid Morales-Alamo
Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria 35017, Canary Island, Spain
J Appl Physiol 114:566-77. 2013
..Sprint performance, muscle metabolism, and AMP-to-ATP and NAD(+)-to-NADH.H(+) ratios are not affected by the acute ingestion of antioxidants...
Muscle hypertrophy in prepubescent tennis players: a segmentation MRI studyJoaquin Sanchis-Moysi
Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
PLoS ONE 7:e33622. 2012
..To asses if tennis at prepubertal age elicits the hypertrophy of dominant arm muscles...
Reductions in systemic and skeletal muscle blood flow and oxygen delivery limit maximal aerobic capacity in humansJose Gonzalez-Alonso
Copenhagen Muscle Research Centre, Rigshospitalet, University of Copenhagen, Denmark
Circulation 107:824-30. 2003
..Severe heat stress drastically reduces VO2max, but the mechanisms have never been studied...
Adiposity and age explain most of the association between physical activity and fitness in physically active menJose A Serrano-Sanchez
Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
PLoS ONE 5:e13435. 2010
..To determine if there is an association between physical activity assessed by the short version of the International Physical Activity Questionnaire (IPAQ) and cardiorespiratory and muscular fitness...
Role of muscle mass on sprint performance: gender differences?Jorge Perez-Gomez
Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Canary Island, Spain
Eur J Appl Physiol 102:685-94. 2008
..Although, the peak power generating capability of the muscle is similar in males and females, muscle mass only partially explains the gender difference in running sprints, even when expressed as a percentage of the whole body mass...
Importance of hemoglobin concentration to exercise: acute manipulationsJose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain
Respir Physiol Neurobiol 151:132-40. 2006
..V(O(2)(max) during exercise in acute hypoxia. Likewise, reducing [Hb] in altitude-acclimatized humans to pre-acclimatization values has no effect on (.)V(O(2)(max) during exercise in hypoxia...
Large asymmetric hypertrophy of rectus abdominis muscle in professional tennis playersJoaquin Sanchis-Moysi
Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
PLoS ONE 5:e15858. 2010
..To determine the volume and degree of asymmetry of the musculus rectus abdominis (RA) in professional tennis players...
Muscle mitochondrial capacity exceeds maximal oxygen delivery in humansRobert Boushel
The Copenhagen Muscle Research Centre, Copenhagen, Denmark
Mitochondrion 11:303-7. 2011
..The findings reveal an excess capacity of muscle mitochondrial respiratory rate over O(2) delivery by the circulation in the cascade defining maximal oxidative rate in humans...
The rate of fatigue accumulation as a sensed variableJose A L Calbet
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain
J Physiol 575:688-9. 2006
Exercise and bone mass in adultsAmelia Guadalupe-Grau
Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Canary Islands, Spain
Sports Med 39:439-68. 2009
..Additional randomized controlled trials are needed to determine the most efficient training loads depending on age, sex, current bone mass and training history for improvement of bone mass...
Repeated muscle biopsies through a single skin incision do not elicit muscle signaling, but IL-6 mRNA and STAT3 phosphorylation increase in injured muscleBorja Guerra
Departamento de Educacion Fisica, Campus Universitario de Tafira, 35017 Las Palmas de Gran Canaria, Canary Island, Spain
J Appl Physiol 110:1708-15. 2011
..STAT3 phosphorylation is an early event in the healing response to muscle injury, probably mediated by the autocrine production of IL-6...
Exercise-induced pyruvate dehydrogenase activation is not affected by 7 days of bed restKristian Kiilerich
August Krogh Bldg, Dept of Biology, Universitetsparken 13, 2100 Copenhagen, Denmark
J Appl Physiol 111:751-7. 2011
..This suggests that exercise-induced PDH regulation in skeletal muscle is maintained in glucose-intolerant (e.g., insulin resistant) individuals...
Skeletal muscle myofibrillar and sarcoplasmic protein synthesis rates are affected differently by altitude-induced hypoxia in native lowlandersLars Holm
Department of Orthopaedic Surgery M and Institute of Sports Medicine, Bispebjerg Hospital, and Faculty of Health Sciences, Center of Healthy Ageing, University of Copenhagen, Copenhagen, Denmark
PLoS ONE 5:e15606. 2010
..These changed responses may lead to divergent adaptation over the course of prolonged exposure...
High femoral bone mineral density accretion in prepubertal soccer playersGerman Vicente-Rodriguez
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain
Med Sci Sports Exerc 36:1789-95. 2004
..CONCLUSION: Long-term soccer participation, starting at a prepubertal age, results in greater improvement of physical fitness, greater acquisition of bone mass and a lower accumulation of body fat...
Marked effects of Pilates on the abdominal muscles: a longitudinal magnetic resonance imaging studyCecilia Dorado
Physical Education Department, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
Med Sci Sports Exerc 44:1589-94. 2012
..The study's purpose was to analyze the effects of Pilates on the volume of the rectus abdominis (RA), obliques, and transversus abdominis, with the last two considered conjointly (OT)...
Leptin receptors in human skeletal muscleBorja Guerra
Department of Physical Education, University of Las Palmas de Gran Canaria, Canary Island, Spain
J Appl Physiol 102:1786-92. 2007
..The amount of 170-kDa protein appears to be independent of the basal concentration of leptin in serum...
Skeletal muscle mitochondrial function and exercise capacity in HIV-infected patients with lipodystrophy and elevated p-lactate levelsBirgit T Røge
Department of Infectious Diseases, Rigshospitalet, University Hospital of Copenhagen, Blegdamsvej 9, DK 2100 Copenhagen, Denmark
AIDS 16:973-82. 2002
..To investigate the skeletal muscle mitochondrial function in HIV-infected patients with lipodystrophy or elevated p-lactate levels...