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Kerkeni M, Trabelsi K, Kerkeni M, Boukhris O, Ammar A, Salem A, Glenn JM, Driller MW, Jahrami H, Chtourou H. Ramadan fasting observance is associated with decreased sleep duration, increased daytime sleepiness and insomnia symptoms among student-athletes. Sleep Med 2024; 122:185-191. [PMID: 39182275 DOI: 10.1016/j.sleep.2024.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 07/21/2024] [Accepted: 08/11/2024] [Indexed: 08/27/2024]
Abstract
OBJECTIVE To examine the relationships between Ramadan fasting observance (RFO) and sleep-wake patterns, daytime sleepiness, and insomnia levels in student-athletes. METHODS Sleep was measured using wrist-actigraphy in 25 semi-professional student-athletes (mean ± SD; age = 22 ± 2 years, height = 182.0 ± 5.8 cm, body mass = 81.3 ± 15.2 kg) during seven nights before RFO (academic study period), during the first half of RFO (14 nights, holiday period), and the second half of RFO (14 nights, academic study period). Additionally, participants completed the Epworth Sleepiness Scale (ESS), Insomnia Severity Index (ISI) and Pittsburgh Sleep Quality Index (PSQI) questionnaires seven days before RFO and on the last day of RFO. RESULTS Actigraphy results indicated RFO was associated with significant decreases in sleep duration during the second half of RFO vs. before and during the first half of RFO (p < 0.001). However, the first half of RFO was associated with a delay of ⁓ 2.5 h in sleep onset compared to before RFO; this delay persisted during the second half of RFO (p < 0.001). The total PSQI score before RFO (6.6 ± 2.3 AU) and during RFO (8.2 ± 2.3 AU) suggested poor overall sleep quality. ISI and ESS scores were greater during than before RFO (p = 0.002 and p = 0.041, respectively). CONCLUSIONS The second half of RFO was associated with decreases in objectively assessed sleep duration among student-athletes. RFO was also associated with impaired sleep quality, excessive daytime sleepiness, and increased insomnia symptoms. Personalized interventions to address sleep-related issues in student-athletes during RFO are warranted.
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Affiliation(s)
- Mohamed Kerkeni
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia; Research Laboratory, Education, Motricity, Sport and Health (EM2S), LR15JS01, High Institute of Sport and Physical Education, University of Sfax, Tunisia
| | - Khaled Trabelsi
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia; Research Laboratory, Education, Motricity, Sport and Health (EM2S), LR15JS01, High Institute of Sport and Physical Education, University of Sfax, Tunisia.
| | - Manel Kerkeni
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia; Research Laboratory, Education, Motricity, Sport and Health (EM2S), LR15JS01, High Institute of Sport and Physical Education, University of Sfax, Tunisia
| | - Omar Boukhris
- SIESTA Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Sport, Performance, and Nutrition Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia
| | - Achraf Ammar
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany; Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine of Sfax, University of Sfax, Sfax, 3029, Tunisia; High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Atef Salem
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Jordan M Glenn
- Exercise Science Research Center, Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, AR, 72701, USA; Neurotrack Technologies, 399 Bradford St, Redwood City, CA, 94063, USA
| | - Matthew W Driller
- SIESTA Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Sport, Performance, and Nutrition Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia
| | - Haitham Jahrami
- Department of Psychiatry, Ministry of Health, Manama, Bahrain; Department of Psychiatry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Hamdi Chtourou
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia; Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis, Tunisia
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Xu YX, Wang SS, Wan YH, Su PY, Tao FB, Sun Y. Association of sleep fragmentation with general and abdominal obesity: a population-based longitudinal study. Int J Obes (Lond) 2024; 48:1258-1265. [PMID: 38806646 DOI: 10.1038/s41366-024-01547-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 05/11/2024] [Accepted: 05/16/2024] [Indexed: 05/30/2024]
Abstract
OBJECTIVE To evaluate the causal relationship between sleep fragmentation (SF) parameters with general and abdominal obesity in free-living conditions. METHODS SF parameters were assessed by ActiGraph accelerometers for 7 consecutive days. Obesity was measured at baseline and 1-year follow-up with InBody S10 body composition analyzer. RESULTS At baseline, the mean age of the study population was 18.7 years old (SD = 0.9) and 139 (35.7%) were male. Each 1-unit increase of baseline sleep fragmentation index (SFI) was associated with 0.08 kg/m2-increase of body mass index (BMI) (95% CI: 0.03, 0.14), 0.20%-increase of percentage of body fat (PBF) (95% CI: 0.07, 0.32), 0.15 kg-increase of fat mass (FM) (95% CI: 0.03, 0.27), 0.15 cm-increase of waist circumference (WC) (95% CI: 0.03, 0.26) and 0.91 cm2-increase of visceral fat area (VFA) (95% CI: 0.36, 1.46) at the 1-year follow-up. In addition, each 1-unit increase of baseline SFI was associated with 15% increased risk of general obesity (OR = 1.15, 95% CI = 1.04-1.28; p = 0.006) and 7% increased risk of abdominal obesity (OR = 1.07, 95% CI = 1.01-1.13; p = 0.021) in the following year. CONCLUSIONS Fragmented sleep is independently associated with an increased risk of both general and abdominal obesity. The result highlights SF as a modifiable risk factor for the prevention and treatment of obesity.
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Affiliation(s)
- Yu-Xiang Xu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Shan-Shan Wang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Yu-Hui Wan
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
- Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, 230032, Anhui, China
- Anhui Provincial Key Laboratory of Environment and Population Health Across the Life Course, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Pu-Yu Su
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
- Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, 230032, Anhui, China
- Anhui Provincial Key Laboratory of Environment and Population Health Across the Life Course, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Fang-Biao Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
- Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, 230032, Anhui, China
- Anhui Provincial Key Laboratory of Environment and Population Health Across the Life Course, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Ying Sun
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China.
- Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, 230032, Anhui, China.
- Anhui Provincial Key Laboratory of Environment and Population Health Across the Life Course, Anhui Medical University, No 81 Meishan Road, Hefei, 230032, Anhui, China.
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Guembri MA, Racil G, Tounsi M, Aouichaoui C, Russo L, Migliaccio GM, Trabelsi Y, Souissi N, Padulo J. Effects of Ramadan Fasting on Sleep and Physical Fitness among Young Female Handball Players. CHILDREN (BASEL, SWITZERLAND) 2024; 11:954. [PMID: 39201889 PMCID: PMC11352938 DOI: 10.3390/children11080954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/30/2024] [Accepted: 08/04/2024] [Indexed: 09/03/2024]
Abstract
OBJECTIVES This study examines the potential impact of Ramadan fasting on sleep patterns and physical fitness in under 14 (U14) and under 17 (U17) female handball players. METHODS For this study, sixty-five female handball players' (U14, n = 33 and U17, n = 32) sleep habits were assessed before (BR) and during the first (R1) and last weeks (R4) of Ramadan using: the Pittsburgh Sleep Quality Index (PSQI), the Insomnia Severity Index (ISI), and the Epworth Sleepiness Scale (ESS). Physical ability tests including balance and jumps were conducted throughout these periods.; Results: During Ramadan, both groups noted significant increases in PSQI and ISI scores during R1 (p < 0.01 and p < 0.05, respectively) and R4 (p < 0.05 and p < 0.05, respectively) compared to before Ramadan (BR). For the U14 group, a significant increase occurred in ESS scores during R1 (p < 0.01) and R4 (p < 0.05), whereas for the U17 group, this increase was limited over the R1 period (p < 0.05). In contrast, for all physical ability parameters, both groups showed no significant difference during R1 and R4; Conclusions: During adolescence, Ramadan fasting may alter sleep patterns in young female athletes but appears to have no effect on their performance in short-duration exercises.
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Affiliation(s)
- Mohamed Alaeddine Guembri
- Research Unit: Physical Activity, Sport and Health, UR18JS01, National Observatory of Sport, Tunis 1003, Tunisia;
| | - Ghazi Racil
- Research Unit (LR 23JS01) “Sport Performance, Health & Society”, Higher Institute of Sport and Physical Education of Ksar Saîd, University of Manouba, Tunis 2010, Tunisia;
| | - Mohamed Tounsi
- Research Laboratory: Exercise Physiology and Physiopathology: From Integrated to Molecular “Biology, Medicine and Health” (LR19ES09), Faculty of Medicine of Sousse, University of Sousse, Sousse 4000, Tunisia; (M.T.); (C.A.); (Y.T.); (N.S.)
| | - Chirine Aouichaoui
- Research Laboratory: Exercise Physiology and Physiopathology: From Integrated to Molecular “Biology, Medicine and Health” (LR19ES09), Faculty of Medicine of Sousse, University of Sousse, Sousse 4000, Tunisia; (M.T.); (C.A.); (Y.T.); (N.S.)
| | - Luca Russo
- eCampus University, 22060 Novedrate, Italy;
| | - Gian Mario Migliaccio
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Rome Open University, 00166 Rome, Italy;
- Maxima Performa, Athlete Physiology, Psychology and Nutrition Unit, 20126 Milan, Italy
| | - Yassine Trabelsi
- Research Laboratory: Exercise Physiology and Physiopathology: From Integrated to Molecular “Biology, Medicine and Health” (LR19ES09), Faculty of Medicine of Sousse, University of Sousse, Sousse 4000, Tunisia; (M.T.); (C.A.); (Y.T.); (N.S.)
| | - Nizar Souissi
- Research Laboratory: Exercise Physiology and Physiopathology: From Integrated to Molecular “Biology, Medicine and Health” (LR19ES09), Faculty of Medicine of Sousse, University of Sousse, Sousse 4000, Tunisia; (M.T.); (C.A.); (Y.T.); (N.S.)
| | - Johnny Padulo
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, 20133 Milan, Italy
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Trabelsi K, Ammar A, Boukhris O, Glenn JM, Clark CCT, Stannard SR, Slater G, Żmijewski P, Driss T, Ben Saad H, Chamari K, Chtourou H. Dietary Intake and Body Composition During Ramadan in Athletes: A Systematic Review and Meta-Analysis With Meta-Regression. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2023; 42:101-122. [PMID: 35512756 DOI: 10.1080/07315724.2021.2000902] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/02/2021] [Accepted: 10/28/2021] [Indexed: 06/14/2023]
Abstract
The aim of this research was to evaluate the effect of Ramadan observance on dietary intake and body composition in adult athletes. This was a systematic review and meta-analysis. Data sources used were PubMed, Web of Science, Scopus, and Taylor and Francis. Eligibility criteria for selecting studies were as follows: single-group, pre-/post-Ramadan, with or without control group, conducted in athletes aged ≥19 years training at least twice a week, and published in any language before August 25, 2021. Studies assessing dietary intake and/or body composition were deemed eligible. The methodological quality of studies was assessed using QualSyst. Nine studies evaluated dietary intake; 4 of these were rated as strong quality and the remaining as moderate. Of the 17 selected studies evaluating body composition, 7 were of strong quality and the remaining 10 were rated as moderate. Compared to pre-Ramadan, energy (number of studies, K = 7; number of participants, N = 78; g = -0.781; 95% confidence interval [CI], -1.416 to -0.145; p = 0.016), carbohydrate (K = 5; N = 50; g = -1.643; 95% CI, -2.949 to -0.336; p = 0.014), and water (K = 4; N = 39; g = -1.081; 95% CI, -1.371 to -0.790; p = 0.000) intakes decreased during Ramadan. However, fat (K = 5; N = 50; g = -0.472; 95% CI, -1.085 to 0.140; p = 0.131) and protein (K = 5; N = 60; g = -0.574; 95% CI, -1.213 to -0.066; p = 0.079) intakes remained unchanged. Compared to pre-Ramadan, body mass (K = 16; N = 131; g = -0.262; 95% CI, -0.427 to -0.097; p = 0.002) and body fat percentage (K = 8; N = 81; g = -0.197; 95% CI, -0.355 to -0.040; p = 0.014) decreased in the fourth week of Ramadan. Lean body mass did not change during Ramadan (K = 4; N = 45; g = -0.047; 95% CI, -0.257 to 0.162; p = 0.658). Carbohydrate and total water intake decreased with the observance of Ramadan, but fat and protein intake were unchanged. Continued training of athletes during Ramadan was associated with a decreased body mass and body fat percentage, but not lean body mass, toward the end of the fasting month. Key pointsRamadan fasting decreases body mass and body fat percentage of athletes, but not lean body mass.Longer durations of fasting could provoke more pronounced decrements in body mass.Carbohydrate and total water intake decreased during Ramadan in athletes.Future studies, with greater methodological rigor, are required to better discern changes in dietary intake and body composition during Ramadan. Supplemental data for this article is available online at https://doi.org/10.1080/07315724.2021.2000902 .
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Affiliation(s)
- Khaled Trabelsi
- Research Laboratory: Education, Motricity, Sport and Health, EM2S, LR19JS01, University of Sfax, Sfax, Tunisia
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Achraf Ammar
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany
- Institute of Sport Science, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, Magdeburg, Germany
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UPL, Paris Nanterre University, UFR STAPS, Nanterre, France
| | - Omar Boukhris
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
- Research Unit, "Physical Activity, Sport and Health", UR18JS01, National Observatory of Sport, Tunis, Tunisia
| | - Jordan M Glenn
- Department of Health, Exercise Science Research Center Human Performance and Recreation, University of Arkansas, Fayetteville, Arkansas, USA
| | - Cain C T Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, UK
| | - Stephen R Stannard
- School of Sport and Exercise, Massey University, Palmerston North, New Zealand
| | - Gary Slater
- School of Health and Sport Sciences, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Piotr Żmijewski
- School of Sport and Exercise, Massey University, Palmerston North, New Zealand
- Jozef Pilsudski University of Physical Education in Warsaw, Warsaw, Poland
| | - Tarak Driss
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UPL, Paris Nanterre University, UFR STAPS, Nanterre, France
- UFR STAPS (Faculty of Sports Sciences), Paris Nanterre University, Nanterre, France
| | - Helmi Ben Saad
- Hôpital Farhat Hached de Sousse, Laboratoire de Recherche "Insuffisance Cardiaque", Université de Sousse, Sousse, Tunisie
| | - Karim Chamari
- ASPETAR, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
- Laboratory ''Sport Performance Optimization'', (CNMSS), ISSEP Ksar-Said, Manouba University, Tunisie
| | - Hamdi Chtourou
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
- Research Unit, "Physical Activity, Sport and Health", UR18JS01, National Observatory of Sport, Tunis, Tunisia
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Boukhris O, Hill DW, Ammar A, Trabelsi K, Hsouna H, Abdessalem R, Mezghanni N, Souissi N, Bragazzi NL, Chamari K, Chtourou H. Longer Nap Duration During Ramadan Observance Positively Impacts 5-m Shuttle Run Test Performance Performed in the Afternoon. Front Physiol 2022; 13:811435. [PMID: 35222079 PMCID: PMC8864235 DOI: 10.3389/fphys.2022.811435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/13/2022] [Indexed: 11/13/2022] Open
Abstract
It is well-documented that changes in the rhythm of life during Ramadan affect sleep schedules (i.e., interruption of night sleep patterns) and are likely to have negative effects on physical and cognitive performances. The aim of the present study was to examine the effect of different naps opportunities' durations during Ramadan on performance of short-duration repetitive maximal exercise and perception of effort. Fifteen physically active men (age: 21 ± 3 years, height: 177 ± 6 cm, body-mass: 73 ± 10 kg) performed a 6 × 30-s shuttle run test after a 25-min nap (N25), a 45-min nap (N45), and in a no-nap condition (NN) during three experimental periods: ∼2 weeks before Ramadan (BR), the last ten days of Ramadan (ER), and ∼3 weeks after Ramadan (AR). During the shuttle run test performed in the late afternoon, the greatest distance (GD), the total distance (TD) and a fatigue index (FI) were assessed. Rating of perceived exertion (RPE) was determined after each 30-s effort. Dietary intake and sleep quality were assessed in each of the three periods. Compared to BR, GD and TD were lower in the ER testing period (p = 0.005; d = 0.54) but returned to BR levels in the AR period. During ER, carbohydrate intake was lower (p = 0.04; d = 0.2), and sleep duration and sleep quality were reduced (d = 0.27 and 0.54, respectively), although other aspects of dietary intake and sleep pattern were not affected. Compared to NN, GD and TD were higher after N25 (d = 0.57 and 0.34, respectively) and N45 (d = 0.93 and 0.88 respectively). RPE was lower in N45 (p = 0.035, d = 0.84). N45 resulted in higher TD (p = 0.021, d = 0.13) and lower RPE (p = 0.004; d = 0.57) compared to N25 during ER. Taking a daytime nap benefits subsequent performance in a shuttle run test, whether sleep the previous night was normal (as in BR) or compromised (as in ER). The benefits of napping were greater after a 45-min nap opportunity than after a 25-min nap opportunity.
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Affiliation(s)
- Omar Boukhris
- Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, Tunis, Tunisia
- Institut Supérieur du Sport et de l’Éducation Physique de Sfax, Université de Sfax, Sfax, Tunisia
| | - David W. Hill
- Department of Kinesiology, Health Promotion, and Recreation, University of North Texas, Denton, TX, United States
| | - Achraf Ammar
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany
- Institute of Sport Science, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), Université Paris Lumières, Paris Nanterre University, Nanterre, France
| | - Khaled Trabelsi
- Institut Supérieur du Sport et de l’Éducation Physique de Sfax, Université de Sfax, Sfax, Tunisia
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, Sfax University, Sfax, Tunisia
| | - Hsen Hsouna
- Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, Tunis, Tunisia
- Institut Supérieur du Sport et de l’Éducation Physique de Sfax, Université de Sfax, Sfax, Tunisia
| | - Raouf Abdessalem
- Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, Tunis, Tunisia
- Institut Supérieur du Sport et de l’Éducation Physique de Sfax, Université de Sfax, Sfax, Tunisia
| | - Nourhen Mezghanni
- Department of Education Collage of Sport Science, Taif University, Taif, Saudi Arabia
| | - Nizar Souissi
- Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, Tunis, Tunisia
| | - Nicola Luigi Bragazzi
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
- Department of Health Sciences (DISSAL), Postgraduate School of Public Health, University of Genoa, Genoa, Italy
- Department of Mathematics and Statistics, Laboratory for Industrial and Applied Mathematics (LIAM), York University, Toronto, ON, Canada
| | - Karim Chamari
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Centre of Excellence, Doha, Qatar
| | - Hamdi Chtourou
- Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, Tunis, Tunisia
- Institut Supérieur du Sport et de l’Éducation Physique de Sfax, Université de Sfax, Sfax, Tunisia
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Bezuglov E, Talibov O, Khaitin V, Pirmakhanov B, Waśkiewicz Z, Butovskiy M, Morgans R. Running Performance during the Holy Month of Ramadan in Elite Professional Adult Soccer Players in Russia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111731. [PMID: 34770245 PMCID: PMC8583445 DOI: 10.3390/ijerph182111731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022]
Abstract
Religious fasting in the Holy Month of Ramadan is an important element of the Muslim culture during which no eating or drinking is permitted from dawn till dusk. A considerable number of Muslim soccer players abide by these restrictions, which may cause a negative impact on key running performance parameters during competitive matches. Alterations to diet and water intake during the Holy Month of Ramadan may affect various running performance parameters in elite Muslim professional adult soccer players. This study was conducted with two groups of soccer players from the Russian Premier League (RPL): The Exposure Group (EG) consisted of 13 Muslims age 24.0 ± 2.8 years abiding by religious fasting and the Control Group (CG) included 13 non-Muslim age 26.0 ± 4.4 years. Using the Instat system, the running performance of each player was controlled in both groups during matches from the RPL before and in the third week of Ramadan (a total of two matches for every player). None of the measured parameters demonstrated significant changes in any match. In conclusion, restrictions in diet and liquid intake during the Holy Month of Ramadan had no negative influence on the running performance of elite Muslim professional adult soccer players during daytime matches.
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Affiliation(s)
- Eduard Bezuglov
- Department of Sports Medicine and Medical Rehabilitation, Sechenov First Moscow State Medical University of the Ministry of Health of the Russia Federation, 119991 Moscow, Russia; (E.B.); (Z.W.); (R.M.)
- “Smart Recovery” Sports Medicine Clinic LLC, 121552 Moscow, Russia;
- PFC CSKA, 125252 Moscow, Russia
- Russian Football Union, 115172 Moscow, Russia
- High Performance Sport Laboratory, Moscow Witte University, 300028 Moscow, Russia;
- Sirius University of Science and Technology, 354349 Sochi, Russia
| | - Oleg Talibov
- High Performance Sport Laboratory, Moscow Witte University, 300028 Moscow, Russia;
- Sirius University of Science and Technology, 354349 Sochi, Russia
- Department of Internal Medicine, Clinical Pharmacology and Emergency Medicine, Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
| | - Vladimir Khaitin
- Department of Physical Methods of Treatment and Sports Medicine, Pavlov First Saint Petersburg State Medical University, 197022 St. Petersburg, Russia;
- FC Zenit, 197341 St. Petersburg, Russia
| | - Bekzhan Pirmakhanov
- Department of Epidemiology, Biostatistics and Evidence-Based Medicine, Faculty of Medicine and Health Care, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
- FC Kairat, Almaty 050054, Kazakhstan
- Correspondence:
| | - Zbigniew Waśkiewicz
- Department of Sports Medicine and Medical Rehabilitation, Sechenov First Moscow State Medical University of the Ministry of Health of the Russia Federation, 119991 Moscow, Russia; (E.B.); (Z.W.); (R.M.)
- Institute of Sport Science, Jerzy Kukuczka Academy of Physical Education, 40-065 Katowice, Poland
| | - Mikhail Butovskiy
- “Smart Recovery” Sports Medicine Clinic LLC, 121552 Moscow, Russia;
- FC Rubin, 420036 Kazan, Russia
| | - Ryland Morgans
- Department of Sports Medicine and Medical Rehabilitation, Sechenov First Moscow State Medical University of the Ministry of Health of the Russia Federation, 119991 Moscow, Russia; (E.B.); (Z.W.); (R.M.)
- PFC CSKA, 125252 Moscow, Russia
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Farooq A, Chamari K, Sayegh S, El Akoum M, Al-Mohannadi AS. Ramadan daily intermittent fasting reduces objectively assessed habitual physical activity among adults. BMC Public Health 2021; 21:1912. [PMID: 34674685 PMCID: PMC8530011 DOI: 10.1186/s12889-021-11961-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 10/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Muslims around the world practice intermittent fasting during the month of Ramadan each year. We hypothesized that daily physical activity could be reduced among Muslims due to the inability to refuel and rehydrate in the fasting state. METHODS A cohort study design among adults registered with national physical activity community program. Data from a pedometer-based community program was used to extract 3 months of daily step counts before, during, and after Ramadan for the past years (2013-2019). A survey was conducted among participants to determine fasting practice and other health and environmental factors. RESULTS A total of 209 participants completed the survey and provided valid data on physical activity. During Ramadan, the average steps per day decreased significantly (- 385 ± SE 158) among participants who fasted (n = 151) p = 0.046 and increased (+ 731 ± SE 247) for the non- fasting participants (n = 58) p = 0.010. Fasting participants preferred before sunset (33.8%) or evening (39.7%) for physical activity. Whereas, non-fasting participants preferred early morning (34.5%). CONCLUSION Fasting during Ramadan impacts the daily physical activity behavior among Muslims. Interventions should focus on creating awareness of the importance of maintenance of adequate physical activity for adults fasting during Ramadan.
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Affiliation(s)
- Abdualziz Farooq
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Centre of Excellence, 29222, Doha, Qatar. .,Physical Activity for Health Group, School of Psychological Sciences & Health, University of Strathclyde, Glasgow, UK.
| | - Karim Chamari
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Centre of Excellence, 29222, Doha, Qatar
| | - Suzan Sayegh
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Centre of Excellence, 29222, Doha, Qatar
| | - Maha El Akoum
- World Innovation Summit for Health (WISH), Qatar Foundation, Doha, Qatar
| | - Abdulla Saeed Al-Mohannadi
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Centre of Excellence, 29222, Doha, Qatar.,World Innovation Summit for Health (WISH), Qatar Foundation, Doha, Qatar
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Sleep Quality and Performance in Professional Athletes Fasting during the Month of Ramadan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18136890. [PMID: 34198990 PMCID: PMC8295756 DOI: 10.3390/ijerph18136890] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 11/24/2022]
Abstract
Background: Maintaining physical performance during Ramadan Diurnal Fasting (RDF) is a challenge for professional athletes. The literature shows that sleep disturbances experienced by athletes during RDF are associated with reduced physical performance. The effect of sleep quality on physical performance, and the effect of work status on physical performance during RDF among athletes, besides engaging in trainings, have been little investigated. This study aims to evaluate the effect of RDF on the physical performance of professional athletes taking into consideration their sleep quality and work status. Methods: Professional medium-distance male runners (n = 32) participated in our study in the summer of 2019. Data about socio-demographics, training characteristics, sleep quality (Pittsburg Sleep Quality Index: PSQI), physical performance (Cooper Test; Harvard step test) were collected before and during Ramadan. Student’s-test and Welch and Wilcoxon tests were used for data analysis. Results: Both quality of sleep and physical performance of athletes deteriorated during Ramadan. People with better quality of sleep had better physical fitness/performance both before and during RDF. Athletes who worked beside trainings achieved worse physical fitness test results and had worse quality of sleep. Conclusions: Policies aimed to improve physical performance in RDF should consider the quality of sleep and the work status of athletes.
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Jorquera-Aguilera C, Barahona-Fuentes G, Pérez Peña MJ, Yeomans Cabrera MM, Huerta Ojeda Á. Sleep Quality in Chilean Professional Soccer Players. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18115866. [PMID: 34072595 PMCID: PMC8198782 DOI: 10.3390/ijerph18115866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 11/17/2022]
Abstract
Recent research has shown that good sleep quality has a positive effect on physical performance. However, sleep quality in Chilean professional soccer players is unknown. The purpose of this study was to determine sleep quality in Chilean professional soccer players. It was a cross-sectional, explanatory study with observable variables. The sample consisted of 94 Chilean male soccer players belonging to four professional clubs. The main variable was the Sleep Quality Index, evaluated through the Pittsburgh questionnaire (Spanish version). After estimating sleep quality individually, the four professional soccer clubs’ comparison was performed through a one-factor ANOVA. The Pearson test was used to relate the questionnaire variables; the significance level was p < 0.05. In the global analysis of the Pittsburgh Sleep Quality Index, a value of 4.75 ± 2.29 on a scale of 0–21 was observed, with no significant differences between the clubs evaluated (p > 0.05). Based on the results obtained, Chilean male professional soccer players present good sleep quality. However, the high values of “sleep latency” and “sleep disturbances” are indicators that should be worked on by the multidisciplinary team of each professional club. They should develop strategies to improve sleep hygiene, encourage good sleep, and fall asleep efficiently.
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Affiliation(s)
- Carlos Jorquera-Aguilera
- Facultad de Ciencias, Escuela de Nutrición y Dietética, Universidad Mayor, Santiago 8580745, Chile;
| | - Guillermo Barahona-Fuentes
- Grupo de Investigación en Salud, Actividad Física y Deporte ISAFYD, Universidad de Las Américas, sede Viña del Mar 2531098, Chile;
| | - María José Pérez Peña
- Facultad de Ciencias, Escuela de Nutrición y Dietética, Magíster en Nutrición para la Actividad Física y Deporte, Universidad Mayor, Santiago 8580745, Chile;
| | | | - Álvaro Huerta Ojeda
- Grupo de Investigación en Salud, Actividad Física y Deporte ISAFYD, Universidad de Las Américas, sede Viña del Mar 2531098, Chile;
- Correspondence: ; Tel.: +56-9-77980432
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Effects of Ramadan Fasting on Physical Performance: A Systematic Review with Meta-analysis. Sports Med 2021; 50:1009-1026. [PMID: 31960369 DOI: 10.1007/s40279-020-01257-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND It is common that several athletes will fast while training or competing during Ramadan. There is currently no consensus on if or how this might affect physical performance. OBJECTIVE The aim was to conduct a systematic review combined with a meta-analysis to determine what are the effects of fasting during the month of Ramadan on physical performance. METHODS Three electronic databases were searched: PubMed, ScienceDirect, and Web of Science between from the earliest available date to May 2019. Two authors identified studies that evaluated the effects of Ramadan fasting on physical performance. Risk of bias was assessed using the Downs and Black methodological quality checklist. Pooled effects were reported as standardized mean differences (MDs) and 95% confidence intervals (CIs) using a random effects model. RESULTS A total of 11 studies met the inclusion criteria. Results revealed that Ramadan fasting had a deleterious effect on mean power and peak power during a Wingate and/or a repeated sprint test. In the morning, sprint performance was negatively affected by Ramadan fasting. Aerobic performance, strength, jump height, fatigue index, and total work were not affected by the intermittent fasting during the month of Ramadan. CONCLUSIONS The majority of physical performance parameters were not influenced by Ramadan fasting when tested either in the morning or in the afternoon. Athletes appear able to participate in competition in a fasted state with little impact on physical performance. Sleep and nutrition opportunities should be optimized to minimize likelihood of accumulating fatigue.
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11
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Miladi A, Ben Fraj S, Latiri I, Ben Saad H. Does Ramadan Observance Affect Cardiorespiratory Capacity of Healthy Boys? Am J Mens Health 2020; 14:1557988320917587. [PMID: 32475293 PMCID: PMC7263136 DOI: 10.1177/1557988320917587] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Studies raising the issue of the effects of Ramadan observance (RO) on boys' 6-min walk test (6MWT) data are rare. The studies, which did not include control groups of non-fasters, presented contradictory results. This study aimed to compare the 6MWT data (6-min walk distance [6MWD; m, %predicted], heart rate [HR; bpm, % of maximal predicted HR]), oxy-hemoglobin saturation (Oxy-sat; %), systolic and diastolic blood pressures (SBP and DBP, respectively; mmHg) determined at rest (Rest and at the end End of the test) of a group of 22 healthy fasting boys (age: 12 to 15 years) with an age-matched non-fasting group (n = 10). The 6MWTs were performed during three experimental conditions (ECs): Pre-Ramadan, Mid-Ramadan, and Post-Ramadan. The two groups' 6MWT data for each EC were compared, and repeated factorial analysis of variance (2 groups vs. 3 ECs) was performed. Both groups had similar values of 6MWD (m, %predicted), HRRest or HREnd (bpm, % of maximal predicted HR), Oxy-satRest, Oxy-satEnd, SBPRest, and DBPRest during the three ECs. Compared to the non-fasting group, the fasting group had significantly higher SBPEnd (121 ± 10 vs. 130 ± 11) and DBPEnd (72 ± 6 vs. 78 ± 7) determined during the Mid-Ramadan EC. No significant interactive effects of the groups (2) vs. ECs (3) was found for the 6MWD (%predicted; p = .809), HRRest (%, p = .555), HREnd (%, p = .964), Oxy-satRest (p = .336), Oxy-satEnd (p = .389), SBPRest (p = .708), SBPEnd (p = .548), DBPRest (p = .277), and DBPEnd (p = .096). To conclude, in boys, RO does not impact the 6MWD, HR, or Oxy-sat, but it has minimal impact on the SBPEnd and DBPEnd.
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Affiliation(s)
- Amira Miladi
- Université de Sousse, Faculté de Médecine de Sousse, Laboratoire de Physiologie et Explorations Fonctionnelles, Sousse, Tunisia
| | - Selma Ben Fraj
- Université de Sousse, Faculté de Médecine de Sousse, Laboratoire de Physiologie et Explorations Fonctionnelles, Sousse, Tunisia
| | - Imed Latiri
- Université de Sousse, Faculté de Médecine de Sousse, Laboratoire de Physiologie et Explorations Fonctionnelles, Sousse, Tunisia,Heart Failure (LR12SP09) Research Laboratory, Farhat HACHED University Hospital, Sousse, Tunisia
| | - Helmi Ben Saad
- Université de Sousse, Faculté de Médecine de Sousse, Laboratoire de Physiologie et Explorations Fonctionnelles, Sousse, Tunisia,Heart Failure (LR12SP09) Research Laboratory, Farhat HACHED University Hospital, Sousse, Tunisia,Helmi Ben Saad, MD, PhD, Laboratory of Physiology, Faculty of Medicine of Sousse, Rue Mohamed KAROUI, Sousse, Tunisia.
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12
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Trabelsi K, Bragazzi N, Zlitni S, Khacharem A, Boukhris O, El-Abed K, Ammar A, Khanfir S, Shephard RJ, Hakim A, Moalla W, Chtourou H. Observing Ramadan and sleep-wake patterns in athletes: a systematic review, meta-analysis and meta-regression. Br J Sports Med 2019; 54:674-680. [DOI: 10.1136/bjsports-2018-099898] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2019] [Indexed: 12/27/2022]
Abstract
ObjectiveTo evaluate the effect of observing Ramadan on athletes’ sleep patterns.DesignSystematic review and meta-analysis.Data sourcesThe entire content of PubMed/MEDLINE and Web of Science.Eligibility criteria for selecting studiesSingle-group, prepost and cross-over design studies conducted in athletes aged ≥18 years, training at least twice a week and published in English before 12 July 2018 were included. Studies assessing sleep quantity, quality, daytime sleepiness and/or daily naps based on objective or subjective methods were deemed eligible.Study appraisalThe methodological quality was assessed using ‘QualSyst’.ResultsOf 13 selected articles, 7 were of strong quality, 3 were moderate and 3 were weak. 11 studies evaluated total sleep time (TST); this decreased during Ramadan in 4 studies, increased in 1 and remained unchanged in 6. Pooled TST findings indicated a moderate effect size (− 0.97, SE=0.37, 95% CI −1.69 to −0.25, t=−2.64, p=0.01) with significant heterogeneity but no publication bias. Meta-regressions showed no effects of study year, age, sample size, type of sport or competition level, but there were effects of country (with France and Tunisia being the most affected countries and Turkey the least affected, Q=32.14, p<0.0001) and study design (Q=7.74, p=0.02). Four studies measured self-reported sleep quality and it decreased in three studies. One study of sleep architecture reported more frequent waking and more light sleep during Ramadan. Daily nap duration was increased in two studies, but daytime sleepiness remained unchanged in four studies.ConclusionWhen athletes continue to train at least two times/week while observing Ramadan, TST is decreased compared with athletes’ baseline levels.
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Sleep Patterns, Alertness, Dietary Intake, Muscle Soreness, Fatigue, and Mental Stress Recorded before, during and after Ramadan Observance. Sports (Basel) 2019; 7:sports7050118. [PMID: 31109004 PMCID: PMC6571812 DOI: 10.3390/sports7050118] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 12/22/2022] Open
Abstract
Ramadan is one of the pillars of the Islamic creed. Its observance commonly causes chrono-biological changes. The present study examined sleep and alertness during Ramadan observance relative to data collected before and after Ramadan in a sample of young, physically active men. Information was also collected on dietary intake, muscle soreness, fatigue, and mental stress over the three periods. Fourteen physically active men (age: 21.6 ± 3.3 years, height: 1.77 ± 0.06 m, body-mass: 73.1 ± 9.0 kg) completed the Hooper questionnaire and the Pittsburgh Sleep Quality Index (PSQI) and responded to the digit cancellation test (DCT) fifteen days before Ramadan, during the last ten days of Ramadan and 20 days after Ramadan. The PSQI results indicated that sleep duration was significantly longer before Ramadan (p = 0.003) and after Ramadan (p = 0.04) compared to during Ramadan and was longer before Ramadan than after Ramadan (p = 0.04). In addition, the sleep efficiency was lower during Ramadan in comparison to before Ramadan (p = 0.02) and after Ramadan (p = 0.04). The daytime dysfunction score increased during Ramadan in comparison with before Ramadan (p = 0.01) and after Ramadan (p = 0.04), and the sleep quality score was higher during (p = 0.003) and after Ramadan (p = 0.04) as compared to before Ramadan. The sleep disturbance score increased during Ramadan relative to before Ramadan (p = 0.04). However, Ramadan observance had no significant effect on sleep latency. Mental alertness also decreased at the end of Ramadan compared to before (p = 0.003) or after Ramadan (p = 0.01). Dietary intake, muscle soreness, fatigue, and mental stress as estimated by the Hooper questionnaire remained unchanged over the three periods of the investigation (p > 0.05). In conclusion, Ramadan observance had an adverse effect on sleep quantity and on mental alertness, but not on sleep quality. However, dietary intake, muscle soreness, fatigue, and mental stress remained unaffected.
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O'Donnell S, Beaven CM, Driller MW. From pillow to podium: a review on understanding sleep for elite athletes. Nat Sci Sleep 2018; 10:243-253. [PMID: 30197545 PMCID: PMC6112797 DOI: 10.2147/nss.s158598] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Sleep is considered vital to human health and well-being, and is critical to physiological and cognitive functioning. Elite athletes experience high training and competition demands, and are often exposed to various factors, situations, and environments that can cause sleep impairments. Previous research has shown that athletes commonly experience sleep loss in the lead up to and following competition, which could have significant impacts on their preparation, performance, and recovery. In particular, the results from previous research show significant reductions in total sleep time (~1:40 h:min) and significant increases in sleep latency (~45 minutes) following evening competition. Napping is common in both the training and competition setting in athletes; however, research on the effect of napping on physiology and performance is limited. In contrast, research on strategies and interventions to improve sleep are increasing in the athletic population, with sleep hygiene research resulting in significant improvements in key sleep indices. This review investigates the physiological importance of sleep in athletes, current tools to monitor athletes' sleep, the role of sleep for cognitive functioning and athletic performance, the prevalence of sleep disturbances and the potential mechanisms causing sleep disturbances, the role of napping, and different intervention strategies to improve sleep.
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Affiliation(s)
- Shannon O'Donnell
- Health, Sport and Human Performance, University of Waikato, Hamilton, New Zealand,
| | - Christopher M Beaven
- Health, Sport and Human Performance, University of Waikato, Hamilton, New Zealand,
| | - Matthew W Driller
- Health, Sport and Human Performance, University of Waikato, Hamilton, New Zealand,
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Razzak RA, Alshaiji AF, Qareeballa AA, Mohamed MW, Bagust J, Docherty S. High-normal blood glucose levels may be associated with decreased spatial perception in young healthy adults. PLoS One 2018; 13:e0199051. [PMID: 29902276 PMCID: PMC6002080 DOI: 10.1371/journal.pone.0199051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/30/2018] [Indexed: 12/30/2022] Open
Abstract
The negative effects of high normal glucose on cognitive function were previously reported in euglycemic individuals of middle age and the elderly population. This study aimed at examining the effect of baseline blood glucose levels on spatial ability, specifically verticality perception on the computerized rod and frame test (CRFT) in young healthy adults. 63 healthy male medical students (age range from 18-23 years), of whom 30 were non-fasting outside the month of Ramadan and 33 fasting during Ramadan of the year 2016, were recruited in order to create varying degrees of glycemia during which verticality perception was carried out. Baseline blood glucose reading was obtained prior to commencing the CRFT test. Blood glucose levels at the time of testing decreased as the duration between the last meal and testing increased. A blood glucose range of 62-117 mg/dl was achieved among participants for this study. Linear regression analysis showed that blood glucose level at testing correlated positively with all alignment spatial error parameters, indicating a probable reduction of spatial perception ability with higher blood glucose levels. These results are consistent with other cognitive studies in older healthy humans and emphasize the critical impact of early glucose dys-homeostasis on cognitive function. They also indicate that elevated blood glucose may affect cognitive functioning outside of the usual complications of diabetes.
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Affiliation(s)
- Rima Abdul Razzak
- Department of Physiology, College of Medicine & Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | | | | | - Mohamed Wael Mohamed
- College of Medicine & Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Jeff Bagust
- Faculty of Health and Social Sciences, Bournemouth University, Fern Barrow, Poole, Dorset, United Kingdom
| | - Sharon Docherty
- School of Health and Social Care, Bournemouth University, Fern Barrow, Poole, Dorset, United Kingdom
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Trabelsi K, Stannard SR, Chtourou H, Moalla W, Ghozzi H, Jamoussi K, Hakim A. Monitoring athletes’ hydration status and sleep patterns during Ramadan observance: methodological and practical considerations. BIOL RHYTHM RES 2017. [DOI: 10.1080/09291016.2017.1368214] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Khaled Trabelsi
- Laboratory of Pharmacology, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Stephen R. Stannard
- School of Sport and Exercise, Massey University, Palmerston North, New Zealand
| | - Hamdi Chtourou
- UR15JS01: Education, Motricity, Sport and Health, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
| | - Wacim Moalla
- UR15JS01: Education, Motricity, Sport and Health, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
| | - Hanène Ghozzi
- Laboratory of Pharmacology, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Kamel Jamoussi
- Department of Biochemistry, Hedi Chaker University Hospital, Sfax, Tunisia
| | - Ahmed Hakim
- Laboratory of Pharmacology, Faculty of Medicine, University of Sfax, Sfax, Tunisia
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Abstract
The purpose of this study was to evaluate the effect of Ramadan fasting on fatigue in nurses. The study was conducted between June 19 and July 27, 2014, with a descriptive design. This study was completed with 99 nurses working in a public hospital in the city of Gaziantep located in the Southeastern Anatolia Region of Turkey. The data of the study were collected by using a questionnaire and the Piper Fatigue Scale. The Piper Fatigue Scale includes 4 subscale/dimensional scores and total fatigue scores. Higher scores indicate more fatigue. Statistical significance levels were set at P < .05. It was determined that the fatigue subscale and total mean scores of nurses increased in a statistically significant manner except for the affective subscale after the month of Ramadan (P < .05). In addition, it was found that the fatigue mean scores of those, who were working for 0 to 4 years, were employed in surgery units, and evaluated their health as bad, were higher (P > .05). The Ramadan fasting increased fatigue levels of nurses. Therefore, it is of vital importance to evaluate fatigue levels of nurses especially in the month of Ramadan and take the necessary precautions in terms of patient and personnel safety.
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Farooq A, Herrera CP, Zerguini Y, Almudahka F, Chamari K. Knowledge, beliefs and attitudes of Muslim footballers towards Ramadan fasting during the London 2012 Olympics: a cross-sectional study. BMJ Open 2016; 6:e012848. [PMID: 27670523 PMCID: PMC5051417 DOI: 10.1136/bmjopen-2016-012848] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES Muslims observe fasting during the month of Ramadan by abstaining from eating and drinking from dawn to sunset. Available literature shows that although several studies have been conducted on athletes to determine the effects of Ramadan fasting in terms of physical fitness and performance, little data are available regarding the knowledge, beliefs and attitudes of athletes (particularly footballers) towards Ramadan fasting during high-level competitions. This study explored the knowledge, beliefs and attitudes towards Ramadan fasting among football players participating in the London 2012 Olympics football tournament. DESIGN Cross-sectional study. SETTINGS Team training facility. PARTICIPANTS 54 Muslim footballers participating in the London Olympics, 2012 OUTCOME MEASURES: Each participant was asked to complete a pre-validated structured questionnaire to assess knowledge, beliefs and attitudes regarding Ramadan fasting and their intention to fast during London 2012. RESULTS Of the 54 participating athletes, 21(39%) reported that they intended to fast during Ramadan, but not on a match day. This attitude differed across three teams interviewed -83%, 15% and 0%-showing cross-cultural variation. Overall, there was a lack of knowledge among footballers regarding the effects of Ramadan fasting on sleep and performance; around 30% of athletes gave incorrect responses. This knowledge was independent of their decision to fast on non-competition days (p>0.05). CONCLUSIONS This is the first study to describe the knowledge, beliefs and attitudes towards Ramadan fasting among athletes from Muslim-majority countries participating in a high-level competition. Appropriate knowledge can ensure optimum performance for athletes during Ramadan fasting. Coaches, family members and friends also in possession of this knowledge can provide moral support to the players.
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Affiliation(s)
- Abdulaziz Farooq
- Athlete Health and Performance Research, Aspetar, Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - Christopher P Herrera
- Department of Health and Human Performance, Sul Ross State University, Alpine, Texas, USA
| | - Yacine Zerguini
- Département Médecine et Traumatologie du Sport, Clinique Chahrazed, Cheraga, Algeria
| | - Fuad Almudahka
- Exercise is Medicine Department, Aspetar, Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - Karim Chamari
- Athlete Health and Performance Research, Aspetar, Orthopaedic and Sports Medicine Hospital, Doha, Qatar
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Abstract
In elite soccer, players are frequently exposed to various situations and conditions that can interfere with sleep, potentially leading to sleep deprivation. This article provides a comprehensive and critical review of the current available literature regarding the potential acute and chronic stressors (i.e., psychological, sociological and physiological stressors) placed on elite soccer players that may result in compromised sleep quantity and/or quality. Sleep is an essential part of the recovery process as it provides a number of important psychological and physiological functions. The effects of sleep disturbance on post-soccer match fatigue mechanisms and recovery time course are also described. Physiological and cognitive changes that occur when competing at night are often not conducive to sleep induction. Although the influence of high-intensity exercise performed during the night on subsequent sleep is still debated, environmental conditions (e.g., bright light in the stadium, light emanated from the screens) and behaviours related to evening soccer matches (e.g., napping, caffeine consumption, alcohol consumption) as well as engagement and arousal induced by the match may all potentially affect subsequent sleep. Apart from night soccer matches, soccer players are subjected to inconsistency in match schedules, unique team schedules and travel fatigue that may also contribute to the sleep debt. Sleep deprivation may be detrimental to the outcome of the recovery process after a match, resulting in impaired muscle glycogen repletion, impaired muscle damage repair, alterations in cognitive function and an increase in mental fatigue. The role of sleep in recovery is a complex issue, reinforcing the need for future research to estimate the quantitative and qualitative importance of sleep and to identify influencing factors. Efficient and individualised solutions are likely needed.
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Farooq A, Herrera CP, Almudahka F, Mansour R. A Prospective Study of the Physiological and Neurobehavioral Effects of Ramadan Fasting in Preteen and Teenage Boys. J Acad Nutr Diet 2015; 115:889-97. [PMID: 25840939 DOI: 10.1016/j.jand.2015.02.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 02/05/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Intermittent fasting during the month of Ramadan, although not obligatory, is commonly practiced by Muslim children. OBJECTIVE Our aim was to describe the effects of Ramadan fasting on various physiological and neurobehavioral measures in preteen and teenaged boys. DESIGN We conduced a prospective cohort study during Ramadan, observed from August 9 to September 11, 2010. PARTICIPANTS Eighteen healthy Muslim boys (mean age±standard deviation 12.6±1.5 years) were recruited and assessed before, during (1st and 4th weeks), and after Ramadan. Subjects were classified as preteens (aged 9 to 12 years) or teens (aged 13 to 15 years). INTERVENTION On each clinic visit, participants completed a match-to-sample test, a spatial planning and working memory task, and a working memory capacity test using the Cambridge Neuropsychological Test Automated Battery. Participants were also assessed for their sleep patterns, daily energy expenditure, and dietary intake. Body composition was determined using a dual-energy x-ray scan. Complete blood count, lipid profile analysis, and iron indices were conducted. MAIN OUTCOME MEASURES We measured morphologic, metabolic, and neurobehavioral parameters. STATISTICAL ANALYSES A linear mixed model was used to assess changes in outcome measures. Post hoc pairwise comparisons were performed as necessary with Bonferroni adjustment. RESULTS Within 1 week of fasting, there was a drop in body fat only in preteens (P=0.001). Reported fat (P=0.004) and protein intake (P=0.037) was higher during Ramadan, but energy expenditure did not change. By the end of Ramadan, there was a significant reduction in hemoglobin (mean±standard error -0.48±0.4 mmol/L) and serum iron (-25.7±31.8 μg/dL [-4.6±5.7 μmol/L]) levels. During week 4, total sleep duration decreased by 1.8 hours. At week 4, performance on the spatial planning and working memory task and working memory capacity test increased significantly (P=0.002), while match-to-sample test performance declined in preteens only (P=0.045). CONCLUSIONS Ramadan fasting was associated with significant changes in body composition, dietary intake, and sleep patterns. Reductions in attention and iron indices were observed in preteens only.
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Souissi N, Zouita A, Chtourou H, Ferchichi H, Dziri C, Abedelmalek S, Souissi N. The effect of Ramadan intermittent fasting on dynamic postural control in judo athletes. BIOL RHYTHM RES 2013. [DOI: 10.1080/09291016.2013.787759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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