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Bao K, Zheng K, Zhou X, Chen B, He Z, Zhu D. The effects of nicotine withdrawal on exercise-related physical ability and sports performance in nicotine addicts: a systematic review and meta-analysis. J Int Soc Sports Nutr 2024; 21:2302383. [PMID: 38213003 PMCID: PMC10791090 DOI: 10.1080/15502783.2024.2302383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 12/05/2023] [Indexed: 01/13/2024] Open
Abstract
BACKGROUND Previous research has established that nicotine withdrawal can ameliorate cardiovascular and pulmonary function in smokers. Nevertheless, the impact on physical fitness and athletic performance remains under-investigated. OBJECTIVE To evaluating the impacts of nicotine withdrawal on both exercise performance and exercise-associated physical capabilities in nicotine-dependent individuals. STUDY DESIGN A comprehensive systematic review and meta-analysis. DATA SOURCES The data was compiled from databases such as PubMed, Scopus, Web of Science, Cochrane Central, and EBSCO. STUDY SELECTION The selection criteria required studies to elucidate the effects of nicotine withdrawal on exercise performance or exercise-related physical abilities. Moreover, the selected studies needed to provide discernible experimental results. DATA SYNTHESIS AND ANALYSIS The random effects model was employed in data analysis, utilizing the standardized mean difference (SMD) and the 95% confidence intervals (95% CIs) to estimate participants' exercise performance and physical abilities, referencing the Mean ±SD during baseline and withdrawal states. RESULTS Out of the selected studies, 10 trials were included, encompassing 13,538 participants aged 18 to 65 years. The findings suggest that nicotine withdrawal could potentially enhance sports performance (SMD = 0.45, 95% CI: 0.03 to 0.88; I^2 = 83%), particularly in terms of aerobic capacity. Short-term nicotine withdrawal (spanning 12 to 24 hours) might lead to a decline in participants' physical abilities in certain aspects like reaction time and sustained attention (SMD = -0.83, 95% CI: -1.91 to 0.25; I^2 = 79%), whereas long-term withdrawal (lasting 48 hours or more) demonstrated an opposing trend (SMD = 0.25, 95% CI: 0.12 to 0.39; I^2 = 81%). Overall, the results show that long-term nicotine withdrawal exhibited some positive impacts on sports performance and exercise-related physical ability, with the withdrawal duration being an indicator of subsequent physical performance. CONCLUSIONS Mid- to long-term (≥3 months) nicotine withdrawal significantly improved the exercisers' exercise-related physical ability and sports performance. Conversely, short-term (≤24 hours) nicotine withdrawal considerably hampered exercisers' performance and physical cognition. It is suggested that exercises avoid abrupt nicotine cessation prior to competitions, as long-term nicotine withdrawal has been shown to significantly enhance exercise-related physiological capacities and athletic performance. By referring to existing literatures we also found that athletes with existing nicotine addiction may could consume nicotine 15-30 minutes before competition to enhance athletic performance and physical function.PROSPERO registration number CRD42023411381.
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Affiliation(s)
- Kangzhe Bao
- Zhejiang Normal University, College of Physical Education and Health Sciences, Jinhua, China
| | - Kai Zheng
- Zhejiang Normal University, College of Physical Education and Health Sciences, Jinhua, China
| | - Xianxian Zhou
- Zhejiang Normal University, College of Physical Education and Health Sciences, Jinhua, China
| | - Baichao Chen
- Zhejiang Normal University, College of Physical Education and Health Sciences, Jinhua, China
| | - Zerui He
- Zhejiang Normal University, College of Physical Education and Health Sciences, Jinhua, China
| | - Danyang Zhu
- Zhejiang Normal University, College of Education, Jinhua, China
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Read D, Cope E, Taylor L. Nicotine dependence in elite sport. Addiction 2024; 119:595-596. [PMID: 38123180 DOI: 10.1111/add.16417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 11/20/2023] [Indexed: 12/23/2023]
Affiliation(s)
- Daniel Read
- Institute for Sport Business, Loughborough University London, London, UK
| | - Ed Cope
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Lee Taylor
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
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Zhang L, Xiao H, Zhao L, Liu Z, Chen L, Liu C. Comparison of the Effects of Prebiotics and Synbiotics Supplementation on the Immune Function of Male University Football Players. Nutrients 2023; 15:nu15051158. [PMID: 36904156 PMCID: PMC10004888 DOI: 10.3390/nu15051158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/23/2023] [Accepted: 02/23/2023] [Indexed: 03/03/2023] Open
Abstract
This study was conducted to compare the effects of long-term prebiotic and synbiotic supplementations on the immunosuppression of male football players after daily high-intensity training and a one-time strenuous exercise. A total of 30 male university student-athletes were recruited and randomly assigned to the prebiotic (PG, n = 15) or synbiotic group (SG, n = 15), receiving a prebiotic or synbiotic once per day for six weeks. Physiological assessments were conducted by a maximal oxygen uptake (VO2max) test and an exhaustive constant load exercise (75% VO2max test). Inflammatory cytokine and secretory immunoglobulin A (SIgA) were measured. VO2max, maximal heart rate (HRmax), and lactic acid elimination rate (ER) were used to evaluate aerobic capacity. Upper respiratory tract infection (URTI) complaints were evaluated using a questionnaire. URTI incidence and duration were significantly lower in the SG group than that in the PG group (p < 0.05). At baseline, SIgA and interleukin-1β (IL-1β) levels in the SG group (p < 0.01) as well as IL-1β and IL-6 in the PG group (p < 0.05) were significantly increased, and IL-4 concentration was markedly reduced in the PG group (p < 0.01). The concentrations of IL-4, IL-10 and transforming growth factor-β1 (TGF-β1) were significantly reduced in the PG and SG group immediately after the constant load exercise. Significantly decreased HRmax and enhanced ER (increased by 193.78%) were detected in the SG group, not in the PG group, during the constant load experiment (p < 0.05) and the recovery period (p < 0.01), respectively. However, VO2max value was not changed. These data suggest that synbiotic supplementation for six weeks has a more positive effect than prebiotics on the immune function and athletic performance of male university football players.
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Affiliation(s)
- Lufang Zhang
- Department of Exercise Physiology, School of Sport Science, Beijing Sport University, Beijing 100084, China
| | - Hui Xiao
- School of China Football Sports, Beijing Sport University, Beijing 100084, China
| | - Li Zhao
- Department of Exercise Physiology, School of Sport Science, Beijing Sport University, Beijing 100084, China
| | - Zeting Liu
- Department of Mathematic Science, School of Sport Engineering, Beijing Sport University, Beijing 100084, China
| | - Lanmu Chen
- Department of Exercise Physiology, School of Sport Science, Beijing Sport University, Beijing 100084, China
| | - Chenzhe Liu
- Department of Exercise Physiology, School of Sport Science, Beijing Sport University, Beijing 100084, China
- Correspondence:
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Zandonai T, Botrè F, Abate MG, Peiró AM, Mündel T. Should We be Concerned with Nicotine in Sport? Analysis from 60,802 Doping Control Tests in Italy. Sports Med 2023; 53:1273-1279. [PMID: 36826714 PMCID: PMC9951140 DOI: 10.1007/s40279-023-01819-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2023] [Indexed: 02/25/2023]
Abstract
BACKGROUND Nicotine is a psychostimulant drug with purported use in sports environments, though the use of nicotine among athletes has not been studied extensively. OBJECTIVE The aim of this study was to assess the nicotine positivity rate in 60,802 anti-doping urine samples from 2012 to 2020. METHODS Urine samples obtained in-competition at different national and international sports events held in Italy during the period 2012-2020 were analysed. All samples were from anonymous athletes that were collected and analysed at the WADA-accredited antidoping laboratory in Rome, Italy. Samples were analysed by gas chromatography coupled with mass spectrometry, with a cut-off concentration for nicotine of > 50 ng/mL. Results were stratified by year, sport and sex. RESULTS An overall mean of 22.7% of the samples (n = 13,804; males: n = 11,099; females: n = 2705) showed nicotine intake, with male samples also displaying higher positivity rates than female (24.1% vs 18.5%). Sample positivity was higher during 2012-2014 (25-33%) than 2015-2020 (15-20%). Samples from team sports displayed a higher positivity rate than those from individual sports (31.4 vs 14.1%). CONCLUSIONS The current data demonstrates that one in five samples from a range of 90 sports test positive for nicotine in-competition. There is a lower positivity rate in endurance versus power/strength athletes and higher positivity rate in team versus individual sports, probably accounted for by differences in physiological and psychological demands and the desire for socialisation. WADA, international and national sports federations should consider these findings with concern, proactively investigate this phenomenon and act in order to protect the health and welfare of its athletes.
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Affiliation(s)
- Thomas Zandonai
- Department of Pharmacology, Paediatrics and Organic Chemistry, Miguel Hernández University of Elche, Crta. Nacional, N-332. S/N, Sant Joan, 03550, Alicante, Spain. .,Neuropharmacology on Pain and Functional Diversity (NED), Institute of Health and Biomedical Research of Alicante (ISABIAL Foundation), Alicante, Spain. .,Department of Social and Developmental Psychology, "Sapienza" University of Rome, Rome, Italy.
| | - Francesco Botrè
- grid.498572.50000 0001 0395 9784Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Rome, Italy ,grid.9851.50000 0001 2165 4204REDs, Research and Expertise on Anti-Doping Sciences, ISSUL Institute des Sciences du Sport, University of Lausanne, Lausanne, Switzerland
| | - Maria Gabriella Abate
- grid.498572.50000 0001 0395 9784Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Rome, Italy
| | - Ana María Peiró
- grid.513062.30000 0004 8516 8274Neuropharmacology on Pain and Functional Diversity (NED), Institute of Health and Biomedical Research of Alicante (ISABIAL Foundation), Alicante, Spain ,Pain Unit, Department of Health of Alicante-General Hospital, Alicante, Spain ,grid.106023.60000 0004 1770 977XClinical Pharmacology Unit, Department of Health of Alicante, General Hospital, Alicante, Spain
| | - Toby Mündel
- grid.148374.d0000 0001 0696 9806School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New Zealand ,grid.411793.90000 0004 1936 9318Department of Kinesiology, Brock University, St. Catharines, Canada
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The Effects of Nicotine on Cortical Excitability After Exercise: A Double-Blind Randomized, Placebo-controlled, Crossover Study. J Clin Psychopharmacol 2021; 40:495-498. [PMID: 32701900 DOI: 10.1097/jcp.0000000000001246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE The use of smokeless tobacco/nicotine products is common among athletes, but clear evidence for their positive or negative effect on sports performance is lacking. Nicotine is a psychoactive substance involved in numerous neuronal processes including cortical excitability. The aim of this study was to evaluate its effect on cortical excitability associated with aerobic exercise in nicotine-naive healthy volunteers. METHODS Ten nicotine-naive healthy volunteers were recruited for this double-blind, randomized, crossover study to compare the effect of snus (8 mg nicotine), an oral, smokeless tobacco product, to placebo on cortical excitability before and after aerobic exercise. Transcranial magnetic stimulation (TMS) was used to measure changes in corticomotor excitability (motor-evoked potentials, MEPs) and electromyography of leg muscles during maximal voluntary contractions (MVC) to assess changes in muscle contractions. Before and after aerobic exercise and with or without nicotine treatment, MEPs and MVCs were measured. RESULTS Analysis of TMS data showed lower motor cortex activation (lower MEP amplitude) after snus administration compared with placebo, whereas electromyography data showed no difference in muscle contraction between snus and placebo treatment. CONCLUSIONS These findings suggest a general reduction in cortical excitability, without no relevant effect on physical performance.
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Hung BL, Chen LJ, Chen YY, Ou JB, Fang SH. Nicotine supplementation enhances simulated game performance of archery athletes. J Int Soc Sports Nutr 2021; 18:16. [PMID: 33602279 PMCID: PMC7890628 DOI: 10.1186/s12970-021-00413-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 02/09/2021] [Indexed: 12/27/2022] Open
Abstract
Background Nicotine is beneficial to mood, arousal and cognition in humans. Due to the importance of cognitive functioning for archery athletes, we investigated the effects of nicotine supplementation on the cognitive abilities, heart rate variability (HRV), and sport performance of professional archers. Methods Eleven college archers were recruited and given 2 mg of nicotine supplementation (NIC group) and placebo (PLA group) in a crossover design. Results The results showed that at 30 min after the intake of nicotine gum, the “correct rejection” time in the NIC group was significantly lower than that of the PLA group (7.29 ± 0.87 vs. 8.23 ± 0.98 msec, p < 0.05). In addition, the NIC group completed the grooved pegboard test in a shorter time than the PLA group (48.76 ± 3.18 vs. 53.41 ± 4.05 s, p < 0.05), whereas motor reaction times were not different between the two groups. Saliva α-amylase activity was significantly lower after nicotine supplementation (p < 0.01) but increased immediately after the archery test in the NIC group (p < 0.05). In addition, nicotine supplementation significantly decreased HRV and increased the archery score (290.58 ± 10.09 vs. 298.05 ± 8.56, p < 0.01). Conclusions Nicotine enhances the performance of archery athletes by increasing cognitive function and stimulating the sympathetic adrenergic system.
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Affiliation(s)
- Bao-Lien Hung
- Department of Sports Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Li-Jung Chen
- Department of Exercise Health Science, National Taiwan University of Sport, Taichung, 40404, Taiwan
| | - Yi-Ying Chen
- Institute of Athletics, National Taiwan University of Sport, No. 16, Section 1, Shuang-Shih Road, Taichung, 40404, Taiwan
| | - Jhih-Bang Ou
- Institute of Athletics, National Taiwan University of Sport, No. 16, Section 1, Shuang-Shih Road, Taichung, 40404, Taiwan
| | - Shih-Hua Fang
- Institute of Athletics, National Taiwan University of Sport, No. 16, Section 1, Shuang-Shih Road, Taichung, 40404, Taiwan.
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Tam E, Bruseghini P, Capelli C, Baraldo M, Chiamulera C, Zandonai T. Effects of nicotine on microvascular responsiveness after nicotine satiety versus overnight nicotine abstinence. Vasc Med 2020; 25:223-225. [PMID: 32202231 DOI: 10.1177/1358863x20906029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Enrico Tam
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Paolo Bruseghini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Carlo Capelli
- Department of Physical Performances, Norwegian School of Sport Sciences, Oslo, Norway
| | | | - Cristiano Chiamulera
- Neuropsychopharmacology Lab, Department of Diagnostic and Public Health, University of Verona, Verona, Italy
| | - Thomas Zandonai
- Department of Experimental Psychology, Mind, Brain and Behaviour Research Centre, Faculty of Psychology, University of Granada, Granada, Spain.,Alicante Institute for Health and Biomedical Research, ISABIAL-FISABIO Foundation, Neuropharmacology on Pain, Miguel Hernández University, Elche, Alicante, Spain
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Thevis M, Kuuranne T, Geyer H. Annual banned‐substance review – Analytical approaches in human sports drug testing. Drug Test Anal 2020; 12:7-26. [DOI: 10.1002/dta.2735] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 11/09/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research ‐ Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents Cologne Germany
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Genève and Lausanne Centre Hospitalier Universitaire Vaudois and University of Lausanne Epalinges Switzerland
| | - Hans Geyer
- Center for Preventive Doping Research ‐ Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents Cologne Germany
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Zandonai T, Chiamulera C. The importance of nicotine use among winter sports athletes especially in skiers. J Sci Med Sport 2019; 22:1072. [DOI: 10.1016/j.jsams.2019.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 05/30/2019] [Accepted: 05/30/2019] [Indexed: 12/16/2022]
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10
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Đorđević Šaranović S, Vićić J, Pešić I, Tomović M, Batinić Đ, Antić M, Tadic M, Mazić S. The Influence of Tobacco Use on Pulmonary Function in Elite Athletes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16193515. [PMID: 31547175 PMCID: PMC6802005 DOI: 10.3390/ijerph16193515] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/08/2019] [Accepted: 09/20/2019] [Indexed: 01/30/2023]
Abstract
Objective: We sought to investigate the prevalence of smoking and lung function in the large cohort of elite athletes. Methods: This cross-sectional study included 804 athletes competing at international level who were consecutively examined from January to December 2017. Elite athletes were classified in four groups of sport disciplines (skill, power, endurance and mixed): skill (n = 141), power (n = 107), endurance (n = 105) and mixed sport disciplines (n = 451). All participants underwent pre-participation screening, including spirometry. Results: Study included 745 (92.7%) non-smokers, 20 (2.5%) former smokers and 39 (4.8%) active smokers. The percentage of body fat was higher and the percentage of muscle was lower in active smokers than in non-smokers and former smokers. Active smokers were more prevalent among skill and mixed than in power and endurance sports. FEV1 and FVC, as well as FEV1/FVC ratio, were significantly lower in active smokers than in non-smokers. There was no significant difference in PEF assessed in absolute values and in percentages. Forced expiratory flows, evaluated at the usual intervals (25%, 50% and 75% of FVC), were significantly lower in active smokers than in non-smokers. FEV1 and MEF25 were the lowest among active smokers in the skill sport group, whereas FEV1/FVC, MEF50 and MEF25 were the lowest among active smokers in the power sport group. In mixed and endurance disciplines there was no difference in pulmonary function between non-smokers, former smokers and active smokers. Conclusions: Pulmonary function was reduced in active smokers and these differences were the most prominent in skill and power sports. The percentage of body fat was the highest and percentage of muscle was the lowest in active smokers.
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Affiliation(s)
| | - Jelisaveta Vićić
- Center for Sports Medicine and Exercise Therapy, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (J.V.); (M.T.); (S.M.)
| | - Ika Pešić
- Clinic for Pulmonary Diseases—Clinical Center of Serbia, 11000 Belgrade, Serbia;
| | - Milena Tomović
- Center for Sports Medicine and Exercise Therapy, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (J.V.); (M.T.); (S.M.)
| | - Đorđe Batinić
- Serbian Institute of Sport and Sports Medicine, 11000 Belgrade, Serbia; (S.Đ.Š.); (Đ.B.); (M.A.)
| | - Milena Antić
- Serbian Institute of Sport and Sports Medicine, 11000 Belgrade, Serbia; (S.Đ.Š.); (Đ.B.); (M.A.)
| | - Marijana Tadic
- Department of Internal Medicine and Cardiology, Augustenburger Platz 1, Campus Virchow-Klinikum, Charité—Universitätsmedizin Berlin, 13353 Berlin, Germany
- Correspondence: ; Tel.: +49-176-3236-0011
| | - Sanja Mazić
- Center for Sports Medicine and Exercise Therapy, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (J.V.); (M.T.); (S.M.)
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Mündel T, Houltham SD, Barnes MJ, Stannard SR. Nicotine Supplementation Does Not Influence Performance of a 1h Cycling Time-Trial in Trained Males. Front Physiol 2019; 10:292. [PMID: 30971941 PMCID: PMC6444171 DOI: 10.3389/fphys.2019.00292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 03/06/2019] [Indexed: 01/25/2023] Open
Abstract
The use of nicotine amongst professional and elite athletes is high, with anecdotal evidence indicating increased prevalence amongst cycling sports. However, previous investigations into its effects on performance have not used high-validity or -reliability protocols nor trained cyclists. Therefore, the present study determined whether nicotine administration proved ergogenic during a ∼1 h self-paced cycling time-trial (TT). Ten well-trained male cyclists (34 ± 9 years; 71 ± 8 kg; O2max: 71 ± 6 ml ⋅ kg−1 ⋅ min−1) completed three work-dependent TT following ∼30 min administration of 2 mg nicotine gum (GUM), ∼10 h administration of 7 mg ⋅ 24 h−1 nicotine patch (PAT) or color- and flavor-matched placebos (PLA) in a randomized, crossover, and double blind design. Measures of nicotine’s primary metabolite (cotinine), core body temperature, heart rate, blood biochemistry (pH, HCO3−, La−) and Borg’s rating of perceived exertion (RPE) accompanied performance measures of time and power output. Plasma concentrations of cotinine were highest for PAT, followed by GUM, then PLA, respectively (p < 0.01). GUM and PAT resulted in no significant improvement in performance time compared to PLA (62.9 ± 4.1 min, 62.6 ± 4.5 min, and 63.3 ± 4.1 min, respectively; p = 0.73), with mean power outputs of 264 ± 31, 265 ± 32, and 263 ± 33 W, respectively (p = 0.74). Core body temperature was similar between trials (p = 0.33) whilst HR averaged 170 ± 10, 170 ± 11, and 171 ± 11 beats ⋅ min−1 (p = 0.60) for GUM, PAT, and PLA, respectively. There were no differences between trials for any blood biochemistry (all p > 0.46) or RPE with mean values of 16.7 ± 0.9, 16.8 ± 0.7, and 16.8 ± 0.8 (p = 0.89) for GUM, PAT, and PLA, respectively. In conclusion: (i) nicotine administration, whether via gum or transdermal patch, did not exert an ergogenic or ergolytic effect on self-paced cycling performance of ∼1 h; (ii) systemic delivery of nicotine was greatest when using a transdermal patch; and (iii) nicotine administration did not alter any of the psycho-physiological measures observed.
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Affiliation(s)
- Toby Mündel
- School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New Zealand
| | - Stuart D Houltham
- School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New Zealand
| | - Matthew J Barnes
- School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New Zealand
| | - Stephen R Stannard
- School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New Zealand
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