Caffeine Ingestion Reverses the Circadian Rhythm Effects on Neuromuscular Performance in Highly Resistance-Trained Men
Publication Date
April 04, 2012
Journal
PLOS ONE
Authors
Ricardo Mora Rodríguez, Jesús García Pallarés, Álvaro López Samanes, Juan Fernando Ortega, et al
Volume
7
Issue
4
Pages
e33807
DOI
https://dx.plos.org/10.1371/journal.pone.0033807
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0033807
PubMed
http://www.ncbi.nlm.nih.gov/pubmed/22496767
PubMed Central
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3319538
Europe PMC
http://europepmc.org/abstract/MED/22496767
Web of Science
000304855200024
Scopus
84859323947
Mendeley
http://www.mendeley.com/research/caffeine-ingestion-reverses-circadian-rhythm-effects-neuromuscular-performance-highly-resistancetrai-1
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Mendeley | Further Information

{"title"=>"Caffeine ingestion reverses the circadian rhythm effects on neuromuscular performance in highly resistance-trained men", "type"=>"journal", "authors"=>[{"first_name"=>"Ricardo", "last_name"=>"Mora-Rodríguez", "scopus_author_id"=>"6602240937"}, {"first_name"=>"Jesús García", "last_name"=>"Pallarés", "scopus_author_id"=>"55173440700"}, {"first_name"=>"Álvaro", "last_name"=>"López-Samanes", "scopus_author_id"=>"55173934400"}, {"first_name"=>"Juan Fernando", "last_name"=>"Ortega", "scopus_author_id"=>"36570784800"}, {"first_name"=>"Valentín E.", "last_name"=>"Fernández-Elías", "scopus_author_id"=>"53063454400"}], "year"=>2012, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-84859323947", "sgr"=>"84859323947", "pui"=>"364568852", "isbn"=>"1932-6203", "pmid"=>"22496767", "doi"=>"10.1371/journal.pone.0033807"}, "id"=>"973349c2-4b04-37da-8b75-21e7a19e4f8c", "abstract"=>"PURPOSE: To investigate whether caffeine ingestion counteracts the morning reduction in neuromuscular performance associated with the circadian rhythm pattern.\\n\\nMETHODS: Twelve highly resistance-trained men underwent a battery of neuromuscular tests under three different conditions; i) morning (10:00 a.m.) with caffeine ingestion (i.e., 3 mg kg(-1); AM(CAFF) trial); ii) morning (10:00 a.m.) with placebo ingestion (AM(PLAC) trial); and iii) afternoon (18:00 p.m.) with placebo ingestion (PM(PLAC) trial). A randomized, double-blind, crossover, placebo controlled experimental design was used, with all subjects serving as their own controls. The neuromuscular test battery consisted in the measurement of bar displacement velocity during free-weight full-squat (SQ) and bench press (BP) exercises against loads that elicit maximum strength (75% 1RM load) and muscle power adaptations (1 m s(-1) load). Isometric maximum voluntary contraction (MVC(LEG)) and isometric electrically evoked strength of the right knee (EVOK(LEG)) were measured to identify caffeine's action mechanisms. Steroid hormone levels (serum testosterone, cortisol and growth hormone) were evaluated at the beginning of each trial (PRE). In addition, plasma norepinephrine (NE) and epinephrine were measured PRE and at the end of each trial following a standardized intense (85% 1RM) 6 repetitions bout of SQ (POST).\\n\\nRESULTS: In the PM(PLAC) trial, dynamic muscle strength and power output were significantly enhanced compared with AM(PLAC) treatment (3.0%-7.5%; p≤0.05). During AM(CAFF) trial, muscle strength and power output increased above AM(PLAC) levels (4.6%-5.7%; p≤0.05) except for BP velocity with 1 m s(-1) load (p = 0.06). During AM(CAFF), EVOK(LEG) and NE (a surrogate of maximal muscle sympathetic nerve activation) were increased above AM(PLAC) trial (14.6% and 96.8% respectively; p≤0.05).\\n\\nCONCLUSIONS: These results indicate that caffeine ingestion reverses the morning neuromuscular declines in highly resistance-trained men, raising performance to the levels of the afternoon trial. Our electrical stimulation data, along with the NE values, suggest that caffeine increases neuromuscular performance having a direct effect in the muscle.", "link"=>"http://www.mendeley.com/research/caffeine-ingestion-reverses-circadian-rhythm-effects-neuromuscular-performance-highly-resistancetrai-1", "reader_count"=>97, "reader_count_by_academic_status"=>{"Unspecified"=>3, "Professor > Associate Professor"=>3, "Researcher"=>8, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>8, "Student > Postgraduate"=>11, "Student > Master"=>26, "Other"=>8, "Student > Bachelor"=>25, "Lecturer"=>1, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>3, "Professor > Associate Professor"=>3, "Researcher"=>8, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>8, "Student > Postgraduate"=>11, "Student > Master"=>26, "Other"=>8, "Student > Bachelor"=>25, "Lecturer"=>1, "Professor"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>4, "Nursing and Health Professions"=>5, "Biochemistry, Genetics and Molecular Biology"=>3, "Medicine and Dentistry"=>21, "Agricultural and Biological Sciences"=>13, "Sports and Recreations"=>45, "Business, Management and Accounting"=>1, "Chemical Engineering"=>1, "Chemistry"=>1, "Social Sciences"=>3}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>21}, "Chemistry"=>{"Chemistry"=>1}, "Social Sciences"=>{"Social Sciences"=>3}, "Sports and Recreations"=>{"Sports and Recreations"=>45}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>13}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>5}, "Business, Management and Accounting"=>{"Business, Management and Accounting"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>3}, "Unspecified"=>{"Unspecified"=>4}, "Chemical Engineering"=>{"Chemical Engineering"=>1}}, "reader_count_by_country"=>{"Austria"=>1, "Norway"=>1, "Brazil"=>1, "United Kingdom"=>3, "Spain"=>1}, "group_count"=>7}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/657339"], "description"=>"<p>A) and B) Velocity for maximal power and; C) and D) Velocity for maximum strength loads for squat and bench press exercises; E) Maximal isometric voluntary contraction strength (MVC<sub>LEG</sub>) and electrically evoked strength (EVOK<sub>LEG</sub>) on the right knee; F) Maximal isometric grip strength. Trials were conducted in the morning (10:00 am) without (AM<sub>PLAC</sub>) or with caffeine ingestion (i.e., 3 mg kg<sup>−1</sup>; AM<sub>CAFF</sub>) and in the afternoon (18:00 pm; PM<sub>PLAC</sub>). Data are means ± SD. *Significant differences compared to the AM<sub>PLAC</sub> values. p≤0.05.</p>", "links"=>[], "tags"=>["circadian", "caffeine", "ingestion", "isometric"], "article_id"=>327821, "categories"=>["Chemistry", "Neuroscience"], "users"=>["Ricardo Mora-Rodríguez", "Jesús García Pallarés", "Álvaro López-Samanes", "Juan Fernando Ortega", "Valentín E. Fernández-Elías"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0033807.g002", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Effects_of_circadian_rhythm_pattern_and_caffeine_ingestion_on_dynamic_and_isometric_maximum_strength_and_muscle_power_values_for_upper_and_lower_body_actions_/327821", "title"=>"Effects of circadian rhythm pattern and caffeine ingestion on dynamic and isometric maximum strength and muscle power values for upper and lower body actions.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-20 06:49:47"}
  • {"files"=>["https://ndownloader.figshare.com/files/657474"], "description"=>"<p>Norepinephrine and Epinephrine changes following a bout of 6 free-weight squats repetitions with a load of 85% of 1 RM in the morning (10:00 am) without (AM<sub>PLAC</sub>) or with caffeine ingestion (i.e., 3 mg kg<sup>−1</sup>; AM<sub>CAFF</sub>) and in the afternoon (18:00 pm; PM<sub>PLAC</sub>). Data are means ± SD for 12 resistance-trained men. Plasma norepinephrine concentrations reflect whole body sympathetic nerve activation. *Significant differences compared to the PRE values of the same treatment. ‡Significant differences compared to the PRE AM<sub>PLAC</sub> values. †Significant differences compared to the POST AM<sub>PLAC</sub> values. p≤0.05.</p>", "links"=>[], "tags"=>["maximal", "sympathetic", "stimulation", "bout"], "article_id"=>327958, "categories"=>["Chemistry", "Neuroscience"], "users"=>["Ricardo Mora-Rodríguez", "Jesús García Pallarés", "Álvaro López-Samanes", "Juan Fernando Ortega", "Valentín E. Fernández-Elías"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0033807.g003", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Catecholamine_response_to_a_maximal_sympathetic_stimulation_bout_of_exercise_/327958", "title"=>"Catecholamine response to a maximal sympathetic stimulation bout of exercise.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-20 06:50:27"}
  • {"files"=>["https://ndownloader.figshare.com/files/657608"], "description"=>"<p>Data are presented as mean ± SD.</p>*<p>Significant differences compared to the AM<sub>PLAC</sub> values.</p>†<p>Significant differences compared to the AM<sub>CAFF</sub> values. p≤0.05.</p>", "links"=>[], "tags"=>["conditions"], "article_id"=>328092, "categories"=>["Chemistry", "Neuroscience"], "users"=>["Ricardo Mora-Rodríguez", "Jesús García Pallarés", "Álvaro López-Samanes", "Juan Fernando Ortega", "Valentín E. Fernández-Elías"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0033807.t001", "stats"=>{"downloads"=>1, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Physiological_conditions_before_the_treatments_/328092", "title"=>"Physiological conditions before the treatments.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-02-20 06:51:21"}
  • {"files"=>["https://ndownloader.figshare.com/files/657572"], "description"=>"<p>Data are presented as mean ± SD.</p>*<p>Significant differences compared to the AM<sub>PLAC</sub> values.</p>†<p>Significant differences compared to the AM<sub>CAFF</sub> values. p≤0.05.</p>", "links"=>[], "tags"=>["steroid", "trials", "caffeine", "was", "ingested"], "article_id"=>328050, "categories"=>["Chemistry", "Neuroscience"], "users"=>["Ricardo Mora-Rodríguez", "Jesús García Pallarés", "Álvaro López-Samanes", "Juan Fernando Ortega", "Valentín E. Fernández-Elías"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0033807.t002", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Serum_blood_steroid_hormone_concentration_in_the_two_trials_in_the_morning_9_15_a_m_AM_PLAC_and_AM_CAFF_before_caffeine_was_ingested_and_in_the_afternoon_17_15_pm_PM_PLAC_/328050", "title"=>"Serum blood steroid hormone concentration in the two trials in the morning (9:15 a.m.; AM<sub>PLAC</sub> and AM<sub>CAFF</sub>) before caffeine was ingested and in the afternoon (17:15 pm; PM<sub>PLAC</sub>).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-02-20 06:51:09"}
  • {"files"=>["https://ndownloader.figshare.com/files/657186"], "description"=>"<p>Twelve highly resistance-trained men, in a randomized, double-blind and placebo controlled experimental design, underwent a battery of neuromuscular and biochemical assessments under three different conditions; <i>i</i>) morning (10:00a.m.) with caffeine ingestion (i.e., 3 mg kg<sup>−1</sup>; AM<sub>CAFF</sub> trial); <i>ii)</i> morning (10:00a.m.) with placebo ingestion (AM<sub>PLAC</sub> trial); and <i>iii)</i> afternoon (18:00p.m.) with placebo ingestion (PM<sub>PLAC</sub> trial).</p>", "links"=>[], "tags"=>["diabetes and endocrinology", "neuroscience"], "article_id"=>327666, "categories"=>["Chemistry", "Neuroscience"], "users"=>["Ricardo Mora-Rodríguez", "Jesús García Pallarés", "Álvaro López-Samanes", "Juan Fernando Ortega", "Valentín E. Fernández-Elías"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0033807.g001", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Experimental_Protocol_/327666", "title"=>"Experimental Protocol.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-20 06:48:56"}

PMC Usage Stats | Further Information

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Relative Metric

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