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Cleymaet R, D’Hondt M, Scheinok T, Malbrain L, De Laet I, Schoonheydt K, Dits H, Van Regenmortel N, Mekeirele M, Cordemans C, Minini A, Severgnini P, Dabrowski W, Wong A, Malbrain MLNG. Comparison of Bioelectrical Impedance Analysis (BIA)-Derived Parameters in Healthy Volunteers and Critically Ill Patients. Life (Basel) 2023; 14:27. [PMID: 38255643 PMCID: PMC10821189 DOI: 10.3390/life14010027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 11/21/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
OBJECTIVE To compare bioelectrical impedance analysis (BIA)-derived parameters in healthy volunteers and critically ill patients and to assess its prognostic value in an ICU patient cohort. DESIGN Retrospective, observational data analysis. SETTING Single centre, tertiary-level ICU (Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg Hospital). PATIENTS 101 patients and 101 healthy subjects, participants of International Fluid Academy Days. MEASUREMENTS AND MAIN RESULTS Compared to healthy volunteers, both male and female ICU patients had significantly higher values for total body water (TBW), extracellular water (ECW), extracellular fluid (ECF), plasma, and interstitial fluid volumes. The phase angle was significantly lower and the malnutrition index was significantly higher in ICU patients, regardless of gender. Non-survivors in the ICU had significantly higher extracellular water content (ECW, 50.7 ± 5.1 vs. 48.9 ± 4.3%, p = 0.047) and accordingly significantly lower intracellular water (ICW, 49.2 ± 5.1 vs. 51.1 ± 4.3%, p = 0.047). The malnutrition index was also significantly higher in non-survivors compared to survivors (0.94 ± 0.17 vs. 0.87 ± 0.16, p = 0.048), as was the capillary leak index (ECW/ICW). CONCLUSIONS Compared to healthy volunteers, this study observed a higher malnutrition index and TBW in ICU patients with an accumulation of fluids in the extracellular compartment. ICU non-survivors showed similar results, indicating that ICU patients and a fortiori non-survivors are generally overhydrated, with increased TBW and ECW, and more undernourished, as indicated by a higher malnutrition index.
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Affiliation(s)
- Robbert Cleymaet
- Department of Oromaxillofacial and Plastic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Marvin D’Hondt
- Department of Oromaxillofacial and Plastic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Thomas Scheinok
- Department of Neurology, University Hospital Brussels (UZB), 1090 Jette, Belgium
| | - Luca Malbrain
- University School of Medicine, Katholieke Universiteit Leuven (KUL), 3000 Leuven, Belgium
| | - Inneke De Laet
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Karen Schoonheydt
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Hilde Dits
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Niels Van Regenmortel
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Michael Mekeirele
- Department of Intensive Care Medicine, University Hospital Brussels (UZB), 1090 Jette, Belgium
- Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), 1090 Jette, Belgium
| | - Colin Cordemans
- Department of Intensive Care, AZ Sint-Maria Hospital, 1500 Halle, Belgium;
| | - Andrea Minini
- Department of Intensive Care Medicine, University Hospital Brussels (UZB), 1090 Jette, Belgium
- School of Anaesthesia and Intensive Care, Dipartimento di Biotecnologie e Scienze della Vita, Insubria University, 21100 Varese, Italy;
| | - Paolo Severgnini
- School of Anaesthesia and Intensive Care, Dipartimento di Biotecnologie e Scienze della Vita, Insubria University, 21100 Varese, Italy;
- Department of Anestesia e Rianimazione Cardiologica, ASST dei Sette Laghi, Ospedale di Circolo e Fondazione Macchi, 21100 Varese, Italy
| | - Wojciech Dabrowski
- First Department of Anaesthesiology and Intensive Therapy, Medical University Lublin, 20-954 Lublin, Poland
| | - Adrian Wong
- Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), 1090 Jette, Belgium
- Department of Intensive Care Medicine and Anaesthesia, King’s College Hospital, Denmark Hill, London SE5 9RS, UK
| | - Manu L. N. G. Malbrain
- First Department of Anaesthesiology and Intensive Therapy, Medical University Lublin, 20-954 Lublin, Poland
- International Fluid Academy, 3360 Lovenjoel, Belgium
- Medaman, Medical Data Management, 2440 Geel, Belgium
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Picó-Munyoz R, Tárrega A, Laguna L. Origins of thirstiness sensation and current food solutions. Compr Rev Food Sci Food Saf 2023; 22:4433-4450. [PMID: 37583300 DOI: 10.1111/1541-4337.13229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 06/15/2023] [Accepted: 08/01/2023] [Indexed: 08/17/2023]
Abstract
The sensation of thirstiness is the desire to drink water. In certain situations, the ingestion of liquid water can be restricted. As a result, thirstiness is not relieved, resulting in an uncomfortable and distressing situation. The present review describes thirstiness and hydration, the food products and beverages that cause thirstiness, and the beverages and food products currently available to quench thirstiness in individuals with restricted access to liquid ingestion. It also discusses how to measure the effectiveness of calming thirstiness. To diminish thirstiness distress, different alternatives to liquids are proposed. Individuals with swallowing disorders are given thickened water, individuals with restricted water ingestion are given ice cubes or ice popsicles of different flavors, and sportspeople are given energy gels. However, current beverage solutions seem not to relieve thirst fully, although some stimuli like iced water, flavors (especially lemon and mint), or acids seem to work better than plain stimuli and could be added to existing products. Therefore, there is still a need to incorporate these strategies into beverage and food formulations and to test their effectiveness.
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Affiliation(s)
- Ruth Picó-Munyoz
- Consumer Perception and Behavior and Adapted Nutrition Laboratory, Institute of Agrochemistry and Food Technology (IATA, CSIC), Paterna, Spain
| | - Amparo Tárrega
- Consumer Perception and Behavior and Adapted Nutrition Laboratory, Institute of Agrochemistry and Food Technology (IATA, CSIC), Paterna, Spain
| | - Laura Laguna
- Consumer Perception and Behavior and Adapted Nutrition Laboratory, Institute of Agrochemistry and Food Technology (IATA, CSIC), Paterna, Spain
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3
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Grobe CC, Reho JJ, Brown-Williams D, Ziegler AA, Mathieu NM, Lawton SB, Fekete EM, Brozoski DT, Wackman KK, Burnett CM, Nakagawa P, Sigmund CD, Segar JL, Grobe JL. Cardiometabolic Effects of DOCA-Salt in Mice Depend on Ambient Temperature. Hypertension 2023; 80:1871-1880. [PMID: 37470185 PMCID: PMC10528934 DOI: 10.1161/hypertensionaha.122.20415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 07/10/2023] [Indexed: 07/21/2023]
Abstract
BACKGROUND Mice prefer warmer environments than humans. For this reason, behavioral and physiological thermoregulatory responses are engaged by mice in response to a standard room temperature of 22 to 24 °C. Autonomic mechanisms mediating thermoregulatory responses overlap with mechanisms activated in hypertension, and, therefore, we hypothesized that housing at thermoneutral temperatures (TNs; 30 °C) would modify the cardiometabolic effects of deoxycorticosterone acetate (DOCA)-salt in mice. METHODS The effects of DOCA-salt treatment upon ingestive behaviors, energy expenditure, blood pressure, heart rate (HR), and core temperature were assessed in C57BL/6J mice housed at room temperature or TN. RESULTS Housing at TN reduced food intake, energy expenditure, blood pressure, and HR and attenuated HR responses to acute autonomic blockade by chlorisondamine. At room temperature, DOCA-salt caused expected increases in fluid intake, sodium retention in osmotically inactive pools, blood pressure, core temperature, and also caused expected decreases in fat-free mass, total body water, and HR. At TN, the effects of DOCA-salt upon fluid intake, fat gains, hydration, and core temperature were exaggerated, but effects on energy expenditure and HR were blunted. Effects of DOCA-salt upon blood pressure were similar for 3 weeks and exaggerated by TN housing in the fourth week. CONCLUSIONS Ambient temperature robustly influences behavioral and physiological functions in mice, including metabolic and cardiovascular phenotype development in response to DOCA-salt treatment. Studying cardiometabolic responses of mice at optimal ambient temperatures promises to improve the translational relevance of rodent models.
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Affiliation(s)
- Connie C. Grobe
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - John J. Reho
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, WI 53226
| | | | - Alisha A. Ziegler
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Natalia M. Mathieu
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Samuel B.R. Lawton
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Eva M. Fekete
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Daniel T. Brozoski
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Kelsey K. Wackman
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Colin M.L. Burnett
- Department of Medicine, Division of Cardiovascular Medicine, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Pablo Nakagawa
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Curt D. Sigmund
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226
- Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Jeffrey L. Segar
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Justin L. Grobe
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, WI 53226
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226
- Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI 53226
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI 53226
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Najafi MT, Sadoogh Abbasian A, Mohammadi H, Abbasi MR, Khatami MR, Ghafari A, Shojamoradi MH. Alteration in body water compartments following intermittent fasting in Ramadan. Front Nutr 2023; 10:1232979. [PMID: 37645631 PMCID: PMC10461004 DOI: 10.3389/fnut.2023.1232979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 08/01/2023] [Indexed: 08/31/2023] Open
Abstract
Concerning the health outcomes of intermittent fasting in Ramadan, loss of fat-free mass (FFM) and changes in the content of body water are of paramount importance. In this study, we aimed to assess the concomitant alterations in body water compartment and composition following Ramadan fasting in healthy individuals. We conducted an open-label cohort with longitudinal follow-up, involving 73 healthy medical staff who planned to fast for at least 20 consecutive days during Ramadan. The primary outcomes of the cohort were changes in parameters related to body composition and water content, which were measured using bioelectrical impedance analysis by InBody S10 (InBody, Seoul, South Korea). Based on the results, the participants' weight decreased significantly by approximately 1,030 g after the fasting period (p < 0.001). There was a significant reduction in the fat mass of an average 828 g (p < 0.001), which accounted for more than 80% of the weight loss. The decline in FFM was not significant (190 g; p = 0.234). The amount of total body water (TBW) and extracellular water (ECW) did not change, while intracellular water (ICW) decreased significantly by about 160 mL (p = 0.027). A strong correlation was observed between the reduction of phase angle and the increase in ECW/TBW ratio (R = -0.71, p < 0.001). Overall, our findings revealed a minimal amount of weight loss after Ramadan fasting, which was mainly due to the loss of fat mass. The parallel decrease in ICW and phase angle indicated impaired cell membrane integrity, with subsequent movement of water from the intracellular to the extracellular compartment.
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Affiliation(s)
| | - Ali Sadoogh Abbasian
- Nephrology Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Internal Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Hamed Mohammadi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Ali Ghafari
- Nephrology Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Wagner B, Malhotra D, Schmidt D, Raj DS, Khitan ZJ, Shapiro JI, Tzamaloukas AH. Hypertonic Saline Infusion for Hyponatremia: Limitations of the Adrogué-Madias and Other Formulas. Kidney360 2023; 4:e555-e561. [PMID: 36758190 PMCID: PMC10278828 DOI: 10.34067/kid.0000000000000075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/10/2023] [Indexed: 02/11/2023]
Abstract
Hypertonic saline infusion is used to correct hyponatremia with severe symptoms. The selection of the volume of infused hypertonic saline ( VInf ) should address prevention of overcorrection or undercorrection. Several formulas computing this VInf have been proposed. The limitations common to these formulas consist of (1) failure to include potential determinants of change in serum sodium concentration ([ Na ]) including exchanges between osmotically active and inactive sodium compartments, changes in hydrogen binding of body water to hydrophilic compounds, and genetic influences and (2) inaccurate estimates of baseline body water entered in any formula and of gains or losses of water, sodium, and potassium during treatment entered in formulas that account for such gains or losses. In addition, computing VInf from the Adrogué-Madias formula by a calculation assuming a linear relation between VInf and increase in [ Na ] is a source of errors because the relation between these two variables was proven to be curvilinear. However, these errors were shown to be negligible by a comparison of estimates of VInf by the Adrogué-Madias formula and by a formula using the same determinants of the change in [ Na ] and the curvilinear relation between this change and VInf . Regardless of the method used to correct hyponatremia, monitoring [ Na ] and changes in external balances of water, sodium, and potassium during treatment remain imperative.
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Affiliation(s)
- Brent Wagner
- Division of Nephrology, University of New Mexico School of Medicine, Albuquerque, New Mexico
- Research Service, Raymond G. Murphy Veterans Affairs Medical Center, Albuquerque, New Mexico
- Kidney Institute of New Mexico, University of New Mexico Health Sciences Center, Albuquerque, New Mexico
| | - Deepak Malhotra
- Division of Nephrology, University of Toledo College of Medicine, Toledo, Ohio
| | - Darren Schmidt
- Division of Nephrology, University of New Mexico School of Medicine, Albuquerque, New Mexico
| | - Dominic S. Raj
- Division of Nephrology, George Washington University School of Medicine, Washington, DC
| | - Zeid J. Khitan
- Division of Nephrology, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Joseph I. Shapiro
- Division of Nephrology, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
| | - Antonios H. Tzamaloukas
- Division of Nephrology, University of New Mexico School of Medicine, Albuquerque, New Mexico
- Research Service, Raymond G. Murphy Veterans Affairs Medical Center, Albuquerque, New Mexico
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Choi SH, Lee BJ, Lee SY. A study on skin mobility according to joint movement: Variations in mobility according to joint motion range and correlation and influence with hydrica composition. Skin Res Technol 2023; 29:e13288. [PMID: 36823503 PMCID: PMC10155801 DOI: 10.1111/srt.13288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 01/20/2023] [Indexed: 02/11/2023]
Abstract
BACKGROUND Skin structures arranged in an advantageous structure for skin stretching to facilitate movement of the human body, and have structural functions to help the movement of the joints by changing the position of the skin, such as the stretch that occurs incidentally. Proper movement of the skin is required to be efficient owing to the nature of the skin that covers the entire human body with a single connected tissue layer. AIMS The purpose of this study was to quantify the skin mobility that occurs during joint motion and to identify the correlation and influence with hydrica composition. MATERIALS & METHODS The subjects of this study were healthy people in their 20s-50s (20 male, 20 female), The movement of the skin marker attached to the skin was measured using X-ray, and the hydrica composition was measured using Inbody S10. RESULTS Experiments showed that the skin on the side at which the joint bends and wrinkles form moved away from the moving joint, while the skin on the side where the wrinkles spread out moved toward the moving joint. As the range of joint motion increases, the skin became more mobile (OR: 18.95 ± 5.91 mm, MR: 34.09 ± 7.87 mm, IR: 51.14 ± 8.73 mm, FF: 78.76 ± 12.24) (p < 0.05). As a result of regression analysis between the total amount of skin mobility and the factors of hydrica composition, it was found that the ABW (arm body water) affected skin mobility as B = 7.430 (p < 0.05, adjusted R2 = 0.119). CONCLUSION Based on the results of this study, it was revealed that directional movement of the skin appeared according to joint movement, and it was affected by body water.
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Affiliation(s)
- Su Hong Choi
- Department of Rehabilitation MedicinePusan National University HospitalSeo‐guRepublic of Korea
| | - Byeong Ju Lee
- Department of Rehabilitation MedicinePusan National University HospitalSeo‐guRepublic of Korea
| | - Sang Yeol Lee
- Department of Physical TherapyKyung‐sung UniversityNam‐guRepublic of Korea
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Guan L, Li T, Wang X, Yu K, Xiao R, Xi Y. Predictive Roles of Basal Metabolic Rate and Body Water Distribution in Sarcopenia and Sarcopenic Obesity: The link to Carbohydrates. Nutrients 2022; 14:nu14193911. [PMID: 36235562 PMCID: PMC9571591 DOI: 10.3390/nu14193911] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/13/2022] [Accepted: 09/18/2022] [Indexed: 11/23/2022] Open
Abstract
Sarcopenic obesity is a new category of obesity and is a specific condition of sarcopenia. This study aimed to find the relationship of the basal metabolic rate (BMR) and body water distribution with muscle health and their prospective roles in screening for sarcopenic obesity and sarcopenia. The role of nutrients such as carbohydrates in the relationship was further detected. A total of 402 elderly subjects were recruited. Body composition was estimated by bioelectrical impedance analysis. Sarcopenia was defined by the Asian Working Group for Sarcopenia 2019. The cutoff values were determined by the receiver operating characteristic curve. Mediation analyses were performed using SPSS PROCESS. Higher BMR and BMR/body surface area (BSA) were protective factors against sarcopenic obesity (OR = 0.047, p = 0.004; OR = 0.035, p = 0.002) and sarcopenia (OR = 0.085, p = 0.001; OR = 0.100, p = 0.003) in elderly people. Low extracellular water (ECW)/intracellular water (ICW) and ECW/total body water (TBW) were negatively correlated with the skeletal muscle index (SMI). The intake of dietary carbohydrates in people with sarcopenic obesity was the lowest, but in subjects with obesity, it was the highest (p = 0.023). The results of the moderated mediation model showed that BMR fully mediated the positive relationship between carbohydrates and SMI, which was more obvious in the population with an abnormal body water distribution. BMR or BMR/BSA had the potential role of predicting a higher risk of sarcopenic obesity and sarcopenia. Higher BMR and lower ECW/ICW and ECW/TBW may benefit muscle health. The overconsumption of carbohydrates (especially > AMDR) might be a risk factor for obesity. Moderate dietary carbohydrate intake might promote SMI by regulating BMR and body water distribution in the elderly.
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Affiliation(s)
- Lizheng Guan
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing 100069, China
| | - Tiantian Li
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing 100069, China
| | - Xuan Wang
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing 100069, China
| | - Kang Yu
- Department of Clinical Nutrition, Peking Union Medical College Hospital, Beijing 100730, China
| | - Rong Xiao
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing 100069, China
| | - Yuandi Xi
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing 100069, China
- Correspondence:
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Gerber M, Lang C, Beckmann J, du Randt R, Long KZ, Müller I, Nienaber M, Probst-Hensch N, Steinmann P, Pühse U, Utzinger J, Nqweniso S, Walter C. Physical Activity, Sedentary Behaviour, Weight Status, and Body Composition among South African Primary Schoolchildren. Int J Environ Res Public Health 2022; 19:ijerph191811836. [PMID: 36142108 PMCID: PMC9517541 DOI: 10.3390/ijerph191811836] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 05/17/2023]
Abstract
Background: Over the past decades, childhood overweight has increased in many African countries. We examined the relationship between sedentary behaviour, moderate-to-vigorous physical activity (MVPA), and body composition in South African primary schoolchildren living in peri-urban settings. Methods: MVPA was measured via 7-day accelerometry and body composition via bioelectrical impedance analysis in 1090 learners (49.2% girls, Mage = 8.3 ± 1.4 years). The relationships between MVPA and sedentary behaviour with the various body composition indicators (body fat and fat-free mass [total, truncal, arms, and legs], bone mass, muscle mass, and body water) were tested with mixed linear regressions. Results: The prevalence of overweight and obesity was 9.8% and 6.6%, respectively; 77.1% of the children engaged in ≥60 min of MVPA/day. Girls were more likely to be overweight/obese, to accumulate less than 60 min of MVPA/day, and had significantly higher relative body fat than boys (ps < 0.001). Lower MVPA was associated with a higher likelihood of being overweight/obese, higher relative body fat, and lower relative fat-free mass, bone mass, muscle mass, and body water (ps < 0.001). For lower sedentary behaviour, the associations with body composition pointed in the opposite direction. Conclusions: In this South African setting, girls are a particularly relevant target group for future physical activity interventions to prevent overweight/obesity-related non-communicable diseases in later life.
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Affiliation(s)
- Markus Gerber
- Department of Sport, Exercise and Health, University of Basel, Grosse Allee 6, CH-4052 Basel, Switzerland
- Correspondence: ; Tel.: +41-61-207-4783
| | - Christin Lang
- Department of Sport, Exercise and Health, University of Basel, Grosse Allee 6, CH-4052 Basel, Switzerland
| | - Johanna Beckmann
- Department of Sport, Exercise and Health, University of Basel, Grosse Allee 6, CH-4052 Basel, Switzerland
| | - Rosa du Randt
- Human Movement Science, Nelson Mandela University, P.O. Box 7700, Gqeberha 6031, South Africa
| | - Kurt Z. Long
- Swiss Tropical and Public Health Institute, Kreuzstrasse 2, CH-4123 Allschwil, Switzerland
- University of Basel, Petersplatz 1, CH-4001 Basel, Switzerland
| | - Ivan Müller
- Department of Sport, Exercise and Health, University of Basel, Grosse Allee 6, CH-4052 Basel, Switzerland
| | - Madeleine Nienaber
- Human Movement Science, Nelson Mandela University, P.O. Box 7700, Gqeberha 6031, South Africa
| | - Nicole Probst-Hensch
- Swiss Tropical and Public Health Institute, Kreuzstrasse 2, CH-4123 Allschwil, Switzerland
- University of Basel, Petersplatz 1, CH-4001 Basel, Switzerland
| | - Peter Steinmann
- Swiss Tropical and Public Health Institute, Kreuzstrasse 2, CH-4123 Allschwil, Switzerland
- University of Basel, Petersplatz 1, CH-4001 Basel, Switzerland
| | - Uwe Pühse
- Department of Sport, Exercise and Health, University of Basel, Grosse Allee 6, CH-4052 Basel, Switzerland
| | - Jürg Utzinger
- Swiss Tropical and Public Health Institute, Kreuzstrasse 2, CH-4123 Allschwil, Switzerland
- University of Basel, Petersplatz 1, CH-4001 Basel, Switzerland
| | - Siphesihle Nqweniso
- Human Movement Science, Nelson Mandela University, P.O. Box 7700, Gqeberha 6031, South Africa
| | - Cheryl Walter
- Human Movement Science, Nelson Mandela University, P.O. Box 7700, Gqeberha 6031, South Africa
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Bustamante-Sánchez Á, Nikolaidis PT, Clemente-Suárez VJ. Body Composition of Female Air Force Personnel: A Comparative Study of Aircrew, Airplane, and Helicopter Pilots. Int J Environ Res Public Health 2022; 19:ijerph19148640. [PMID: 35886498 PMCID: PMC9320040 DOI: 10.3390/ijerph19148640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 02/04/2023]
Abstract
This research aimed to analyze the body composition (BC) of different groups of women aircrew units in the Spanish Air Forces for a better understanding and improvement of their operability. Specifically, 184 female aircrew members were analyzed and classified into specialties (38 airplane pilots, age: 32.8 ± 10.8; 26 helicopter pilots, age: 32.0 ± 9.18; and 120 transport aircrew, age: 36.9 ± 8.18). The women’s BC was analyzed with an InBody720 bioimpedance device previously used in the military population. There were differences in the BC among specialties, although there were similarities between airplane and helicopter pilots. Airplane (24.0% ± 10.4%) and helicopter pilots (22.6 ± 6.32%) had a smaller percentage of body fat mass than transport aircrew (26.3 ± 7.51%), but there was uniformity among groups in skeletal muscle mass and soft lean mass. We found no differences in body water among specialties. Differences in BCs were previously reported for men in the air force, and these results in women showed similarities for different job entry requirements, different training needs, and different occupational behaviors among units in the Air Force. These results help to deepen the previous knowledge of women’s BC standards in military units. Although pilots are primarily responsible for the aircraft, healthy habits should be encouraged to keep fit and improve the performance of all aircrew members both in flight and when they are deployed.
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Affiliation(s)
- Álvaro Bustamante-Sánchez
- Faculty of Sport Sciences, Universidad Europea de Madrid, Tajo Street, s/n, 28670 Madrid, Spain; (Á.B.-S.); (P.T.N.)
| | - Pantelis T. Nikolaidis
- Faculty of Sport Sciences, Universidad Europea de Madrid, Tajo Street, s/n, 28670 Madrid, Spain; (Á.B.-S.); (P.T.N.)
- School of Health and Caring Sciences, University of West Attica, 12243 Athens, Greece
| | - Vicente Javier Clemente-Suárez
- Faculty of Sport Sciences, Universidad Europea de Madrid, Tajo Street, s/n, 28670 Madrid, Spain; (Á.B.-S.); (P.T.N.)
- Grupo de Investigación en Cultura, Educación y Sociedad, Universidad de la Costa, Barranquilla 080002, Colombia
- Correspondence:
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10
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Pauwaert K, Bodé S, Alwis US, Mylle T, Boeckx P, Delanghe J, Everaert K, Roggeman S. Observing the water handling in humans to resolve the role of the interstitium: preliminary results of the usability of deuterium oxide and bio-impedance analysis - a pilot analysis. Isotopes Environ Health Stud 2022; 58:99-110. [PMID: 35072572 DOI: 10.1080/10256016.2022.2026349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 12/02/2021] [Indexed: 06/14/2023]
Abstract
The aim of this research was to evaluate the relevance of using deuterium oxide (2H2O) and bio-impedance analysis (BIA) to assess size and function of the interstitium for urological research. Nineteen volunteers were recruited to this prospective trial combining ingestion of 2H2O and BIA. Blood samples were obtained every 10 min after ingestion of 2H2O. Urine was collected before and after the experiment. BIA was performed every 5 min. Body position was alternated to study the effect on fluid distribution. First order kinetics were assumed for the uptake of 2H2O from the gastrointestinal tract to the blood. Sex seemed to have an influence with a significantly slower exchange for women (p = 0.041, men: 0.052 min-1, women: 0.038 min-1). Impedance measured in legs (men: p = 0.012, women: p = 0.008) and trunk (both p < 0.001) decreased significantly with posture change. These changes probably reflect the orthostatic redistribution of fluid with an increase of fluid in both trunk and legs. Both methods were tested and found to be useful for further urological research. Significant gender differences in 2H2O uptake dynamics from the gastrointestinal pool were observed. An impact of posture changes on the electrical impedance measured was observed.
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Affiliation(s)
- Kim Pauwaert
- Department of Urology, University Hospital Ghent, Ghent, Belgium
| | - Samuel Bodé
- Isotope Bioscience Laboratory - ISOFYS, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | | | - Toon Mylle
- Department of Urology, University Hospital Ghent, Ghent, Belgium
| | - Pascal Boeckx
- Isotope Bioscience Laboratory - ISOFYS, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Joris Delanghe
- Department of Diagnostic Sciences, University Hospital Ghent, Ghent, Belgium
| | - Karel Everaert
- Department of Urology, University Hospital Ghent, Ghent, Belgium
| | - Saskia Roggeman
- Department of Urology, University Hospital Ghent, Ghent, Belgium
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11
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Wagner DR. Bioelectrical Impedance Changes of the Trunk are Opposite the Limbs Following Acute Hydration Change. J Electr Bioimpedance 2022; 13:25-30. [PMID: 35855420 PMCID: PMC9252176 DOI: 10.2478/joeb-2022-0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Indexed: 06/15/2023]
Abstract
This study aimed to evaluate the changes in impedance and estimates of body composition variables obtained from segmental multi-frequency bioelectrical impedance analysis (SMFBIA) following acute hydration change. All participants (N = 11 active adults) had SMFBIA measurements at baseline (euhydration), post-dehydration, and post-hyperhydration in an experimental repeated-measures design. Dehydration and hyperhydration trials were randomized with the opposite treatment given 24 h later. Dehydration was achieved via a heat chamber of 40 °C and 60% relative humidity. Hyperhydration was achieved by drinking lightly-salted water (30 mmol·L-1 NaCl; 1.76 g NaCl·L-1) within 30 min. Post-measurements were taken 30 min after each treatment. Despite changes in mass post-dehydration (Δ = -2.0%, p < 0.001) and post-hyperhydration (Δ = 1.2%, p < 0.001), SMFBIA estimates of total body water (TBW) did not change significantly across trials (p = 0.507), leading to significant differences (p < 0.001) in SMFBIA-estimates of body fat percentage across trials. Dehydration resulted in a significant (p < 0.001) 8% decrease in limb impedances at both 20 kHz and 100 kHz. Hyperhydration increased limb impedances only slightly (1.5%, p > 0.05). Impedance changes in the trunk followed an opposite pattern of the limbs. SMFBIA failed to track acute changes in TBW. Divergent impedance changes suggest the trunk is influenced by fluid volume, but the limbs are influenced by ion concentration.
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Affiliation(s)
- Dale R. Wagner
- Kinesiology and Health Science Department, Utah State University, Logan, UT, USA
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12
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Kovarik JJ, Morisawa N, Wild J, Marton A, Takase‐Minegishi K, Minegishi S, Daub S, Sands JM, Klein JD, Bailey JL, Kovalik J, Rauh M, Karbach S, Hilgers KF, Luft F, Nishiyama A, Nakano D, Kitada K, Titze J. Adaptive physiological water conservation explains hypertension and muscle catabolism in experimental chronic renal failure. Acta Physiol (Oxf) 2021; 232:e13629. [PMID: 33590667 PMCID: PMC8244025 DOI: 10.1111/apha.13629] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 12/22/2022]
Abstract
Aim We have reported earlier that a high salt intake triggered an aestivation‐like natriuretic‐ureotelic body water conservation response that lowered muscle mass and increased blood pressure. Here, we tested the hypothesis that a similar adaptive water conservation response occurs in experimental chronic renal failure. Methods In four subsequent experiments in Sprague Dawley rats, we used surgical 5/6 renal mass reduction (5/6 Nx) to induce chronic renal failure. We studied solute and water excretion in 24‐hour metabolic cage experiments, chronic blood pressure by radiotelemetry, chronic metabolic adjustment in liver and skeletal muscle by metabolomics and selected enzyme activity measurements, body Na+, K+ and water by dry ashing, and acute transepidermal water loss in conjunction with skin blood flow and intra‐arterial blood pressure. Results 5/6 Nx rats were polyuric, because their kidneys could not sufficiently concentrate the urine. Physiological adaptation to this renal water loss included mobilization of nitrogen and energy from muscle for organic osmolyte production, elevated norepinephrine and copeptin levels with reduced skin blood flow, which by means of compensation reduced their transepidermal water loss. This complex physiologic‐metabolic adjustment across multiple organs allowed the rats to stabilize their body water content despite persisting renal water loss, albeit at the expense of hypertension and catabolic mobilization of muscle protein. Conclusion Physiological adaptation to body water loss, termed aestivation, is an evolutionary conserved survival strategy and an under‐studied research area in medical physiology, which besides hypertension and muscle mass loss in chronic renal failure may explain many otherwise unexplainable phenomena in medicine.
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Affiliation(s)
- Johannes J. Kovarik
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
- Clinical Division of Nephrology and Dialysis Department of Internal Medicine III Medical University of Vienna Vienna Austria
| | - Norihiko Morisawa
- Department of Pharmacology Faculty of Medicine Kagawa University Kagawa Japan
| | - Johannes Wild
- Division for Cardiology 1 Centre for Cardiology Johannes Gutenberg‐University Mainz Mainz Germany
| | - Adriana Marton
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
| | - Kaoru Takase‐Minegishi
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
- Department of Stem Cell and Immune Regulation Yokohama City University Graduate School of Medicine Yokohama Japan
| | - Shintaro Minegishi
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
- Department of Medical Science and Cardiorenal Medicine Yokohama City University Graduate School of Medicine Yokohama Japan
| | - Steffen Daub
- Division for Cardiology 1 Centre for Cardiology Johannes Gutenberg‐University Mainz Mainz Germany
| | - Jeff M. Sands
- Renal Division Department of Medicine Emory University Atlanta GA USA
| | - Janet D. Klein
- Renal Division Department of Medicine Emory University Atlanta GA USA
| | - James L. Bailey
- Renal Division Department of Medicine Emory University Atlanta GA USA
| | - Jean‐Paul Kovalik
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
| | - Manfred Rauh
- Division of Paediatrics Research Laboratory Erlangen Germany
| | - Susanne Karbach
- Division for Cardiology 1 Centre for Cardiology Johannes Gutenberg‐University Mainz Mainz Germany
| | - Karl F. Hilgers
- Division of Nephrology and Hypertension University Clinic Erlangen Erlangen Germany
| | - Friedrich Luft
- Experimental and Clinical Research Center Max Delbrück Center for Molecular Medicine Berlin Germany
| | - Akira Nishiyama
- Department of Pharmacology Faculty of Medicine Kagawa University Kagawa Japan
| | - Daisuke Nakano
- Department of Pharmacology Faculty of Medicine Kagawa University Kagawa Japan
| | - Kento Kitada
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
- JSPS Overseas Research Fellow Japan Society for the Promotion of Science Tokyo Japan
| | - Jens Titze
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
- Division of Nephrology and Hypertension University Clinic Erlangen Erlangen Germany
- Division of Nephrology Duke University School of Medicine Durham NC USA
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13
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Vitale SG, Corrado F, Caruso S, Di Benedetto A, Giunta L, Cianci A, D'Anna R. Myo-inositol supplementation to prevent gestational diabetes in overweight non-obese women: bioelectrical impedance analysis, metabolic aspects, obstetric and neonatal outcomes - a randomized and open-label, placebo-controlled clinical trial. Int J Food Sci Nutr 2020; 72:670-679. [PMID: 33238798 DOI: 10.1080/09637486.2020.1852191] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This study aims to evaluate the effects of myo-inositol supplementation on gestational diabetes mellitus (GDM) rates and body water distribution in overweight non-obese women. 223 overweight non-obese women pregnant were randomly assigned to the treatment group (2 g of myo-inositol plus 200 µg of folic acid) or to the placebo one (200 µg of folic acid). The treatment lasted until three weeks after delivery. A tetrapolar impedance analyser was used to study body composition. The incidence of GDM was significantly reduced in the myo-inositol group compared with the placebo group. There was a significant increase in TBW, ECW and ICW values in the placebo group compared to the myo-inositol group. We have recorded a significant reduction in the overall incidence of pregnancy-induced hypertension in the myo-inositol group compared with the placebo group. Our results demonstrate the effectiveness of myo-inositol supplementation in preventing GDM in overweight non-obese pregnant women.
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Affiliation(s)
- Salvatore Giovanni Vitale
- Obstetrics and Gynecology Unit, Department of General Surgery and Medical Surgical Specialties, University of Catania, Catania, Italy
| | - Francesco Corrado
- Department of Obstetrics and Gynecology, University of Messina, Messina, Italy
| | - Salvatore Caruso
- Obstetrics and Gynecology Unit, Department of General Surgery and Medical Surgical Specialties, University of Catania, Catania, Italy
| | | | - Loretta Giunta
- Department of Internal Medicine, University of Messina, Messina, Italy
| | - Antonio Cianci
- Obstetrics and Gynecology Unit, Department of General Surgery and Medical Surgical Specialties, University of Catania, Catania, Italy
| | - Rosario D'Anna
- Department of Obstetrics and Gynecology, University of Messina, Messina, Italy
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Wylęgała A, Pilch J, Bolek B, Sędziak-Marcinek B, Wylęgała E. Does Oxygen Uptake Before Physical Exercise Affect Tear Osmolarity? J Hum Kinet 2020; 73:297-304. [PMID: 32774560 DOI: 10.2478/hukin-2019-0118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Recently, it has been reported that tear osmolarity (Tosm) is correlated with plasma osmolarity and will increase during exertion. We aimed to assess whether inhaling oxygen-enriched air between exercises could significantly change the Tosm value. Thirty men aged 24.9 years were included in the study. A cycloergometer was used to perform the exercise protocol. We recorded the participants’ Tosm (mOsm/L), heart rate (HR, beats/minute), oxygen saturation, and blood pressure values. After the first exhaustive exercise (T1), participants inhaled oxygen in the experimental group and a placebo in the control group. After the second exercise (T2), another set of measurements was obtained. The Tosm value before exercise was 297.4 ± 1.21 and 296.53 ± 1.11 mOsm/L (p = 0.61718) and the HR was 72.6 ± 2.59 and 73 ± 2.59 beats/minute (p = 0.39949) in the study and the control group, respectively. At T1, Tosm was 303.67 ± 1.25 and 302.2 ± 1.25 mOsm/L (p = 0.41286) and the HR reached 178.04 ± 2.60 and 176.4 ± 2.60 beats/minute (p = 0.65832), respectively. At T2, Tosm in the study group reached 305.73 ± 0.86 mOsm/L (correlation with the use of oxygen: r = −0.3818), and in the control group, it was 308.4 ± 0.86 mOsm/L (p = 0.0373), while the HR reached 172.20 ± 2.53 beats/minute in the study group and 178.2 ± 2.53 beats/minute in the control group (p = 0.057). It was concluded that inhaling oxygen before and after exercise could increase the rate of recovery after exhaustive exercise.
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Lacey J, Corbett J, Shepherd A, Dubois A, Hughes F, White D, Tipton M, Mythen M, Montgomery H. Thirst-guided participant-controlled intravenous fluid rehydration: a single blind, randomised crossover study. Br J Anaesth 2020; 124:403-410. [PMID: 32014238 DOI: 10.1016/j.bja.2019.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/01/2019] [Accepted: 12/12/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Dehydration is common in hospitals and is associated with increased mortality and morbidity. Clinical assessment and diagnostic measures of dehydration are unreliable. We sought to investigate the novel concept that individuals might control their own intravenous rehydration, guided by thirst. METHODS We performed a single-blind, counterbalanced, randomised cross-over trial. Ten healthy male volunteers of mean age 26 (standard deviation [sd] 10.5) yr were dehydrated by 3-5% of their baseline body mass via exercising in the heat (35°C, 60% humidity). This was followed by a 4 h participant-controlled intravenous rehydration: individuals triggered up to six fluid boluses (4% dextrose in 0.18% sodium chloride) per hour in response to thirst. Participants undertook two blinded rehydration protocols which differed only by bolus volume: 50 ml (low volume [LV]) or 200 ml (high volume [HV]). Each hour during the rehydration phase, plasma osmolality (pOsm) was measured and thirst score recorded. Nude body mass was measured at baseline, after dehydration, and after the rehydration phase. RESULTS In both conditions, the mean dehydration-related body mass loss was 3.9%. Thirst score was strongly associated with pOsm (within-subject r=0.74) and demand for fluid decreased as pOsm corrected. In the HV condition, participants rapidly rehydrated themselves (mean fluid delivered 3060 vs 981 ml in the LV condition) to body mass and pOsm no different to their euhydrated state. CONCLUSION Healthy individuals appear able to rely on thirst to manage intravenous fluid intake. Future work must now focus on whether patient-controlled intravenous fluids could represent a paradigm shift in the management of hydration in the clinical setting. CLINICAL TRIAL REGISTRATION NCT03932890.
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Affiliation(s)
- Jonathan Lacey
- Institute of Sport Exercise & Health, University College London, London, UK; St George's Hospital NHS Trust, London, UK.
| | - Jo Corbett
- Department of Sport & Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Ant Shepherd
- Department of Sport & Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Andre Dubois
- British Antarctic Survey Medical Unit, University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - Fintan Hughes
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Danny White
- Department of Sport & Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Mike Tipton
- Department of Sport & Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Michael Mythen
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Hugh Montgomery
- Institute of Sport Exercise & Health, University College London, London, UK
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16
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Wylęgała A, Sędziak-Marcinek B, Pilch J, Wylęgała E. Alteration of Blinking and Sex Differences During Physical Exercise Affect Tear Osmolarity. J Hum Kinet 2019; 67:143-51. [PMID: 31523313 DOI: 10.2478/hukin-2019-0004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Physical exertion leads to the rise in tear osmolarity. However, previous studies have been conducted mostly on males and did not consider sex differences and the possible alteration in blinking during physical exercise. Sixteen women and 18 men aged 25.09 ± 1.70 were divided into equal groups with eyes open and shut. Participants performed 8-min medium-intensity exercise and 5-min intense exercise on a cycloergometer. Tear osmolarity (in mOsm/L) was evaluated before ( T0), after medium-intensity (T1) and intense exercise (T2). The blinking rate was assessed in a group with eyes open. Tear brake up time was measured in T0 and T1. With tear osmolarity measuring 305.72 ± 1.22 and 313.56 ± 1.90 for men and women, respectively, we observed significant differences in T1. In T2, tear osmolarity in men was 303.3 ± 1.28 vs. 310.87 ± 1.36 in women. The blinking rate decreased from 14.24 ± 2.54/min in T0 to 9.41 ± 2.83/min in T1. There was a statistically significant change in tear osmolarity in both groups, that is, in the group with eyes shut from 300.53 ± 1.37 in T0 to 308.06 ± 1.55 in T1 to 304.88 ± 1.54 in T2. In the group with eyes open, tear osmolarity increased from 300.29 ± 1.37 in T0 to 310.76 ± 1.55 in T1 and then dropped to 308.88 ± 1.54 in T2. Tear brake up time measured in T0 was 14.7 ± 1.43 vs. 13.53 ±1.48 in the open eyes condition. Due to physical exercise, short-term changes in tear osmolarity are partially caused by altered blinking. Sex differences in tear osmolarity in response to exertion may confirm the relationship between total body water and tear osmolarity.
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17
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Earp JE, Stearns RL, Stranieri A, Agostinucci J, Lepley AS, Matson T, Ward-Ritacco CL. Electrolyte beverage consumption alters electrically induced cramping threshold. Muscle Nerve 2019; 60:598-603. [PMID: 31350753 DOI: 10.1002/mus.26650] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 07/20/2019] [Accepted: 07/21/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND Recent investigations have questioned the role of hydration and electrolytes in cramp susceptibility and thus the efficacy of consuming electrolyte-rich carbohydrate beverages (EB) to control/prevent cramping. METHODS Nine euhydrated, cramp-prone participants had their cramp susceptibility assessed by measuring the nerve stimulation threshold frequency at which cramping occurs (TF) before and after consumption of an EB (kCal: 120, Na: 840 mg, K: 320 mg, Mg: 5 mg) and placebo beverage (PB: kCal: 5, Na: 35 mg). Cramp intensity was assessed using a verbal pain scale and poststimulation electromyography (EMG). RESULTS TF was greater in EB (14.86 ± 7.47 Hz) than PB (14.00 ± 5.03 Hz; P = .038) and reported pain was lower in EB (2.0 ± 0.6) than PB (2.7 ± 0.8; P = .025) while EMG was similar (P = .646). DISCUSSION EB consumption decreased cramp susceptibility and pain but did not prevent cramping in any participants. These results suggest that electrolyte consumption independent of hydration can influence cramp susceptibility in young people.
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Affiliation(s)
- Jacob E Earp
- Department of Kinesiology, University of Rhode Island, Kingston, Rhode Island
| | - Rebecca L Stearns
- Department of Kinesiology, University of Connecticut, Storrs, Connecticut
| | - Andrew Stranieri
- Department of Kinesiology, University of Rhode Island, Kingston, Rhode Island
| | - James Agostinucci
- Department of Physical Therapy, University of Rhode Island, Kingston, Rhode Island
| | - Adam S Lepley
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
| | - Taylor Matson
- Department of Kinesiology, University of Rhode Island, Kingston, Rhode Island
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Lacey J, Corbett J, Forni L, Hooper L, Hughes F, Minto G, Moss C, Price S, Whyte G, Woodcock T, Mythen M, Montgomery H. A multidisciplinary consensus on dehydration: definitions, diagnostic methods and clinical implications. Ann Med 2019; 51:232-251. [PMID: 31204514 PMCID: PMC7877883 DOI: 10.1080/07853890.2019.1628352] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/28/2019] [Accepted: 05/28/2019] [Indexed: 01/02/2023] Open
Abstract
Background: Dehydration appears prevalent, costly and associated with adverse outcomes. We sought to generate consensus on such key issues and elucidate need for further scientific enquiry. Materials and methods: A modified Delphi process combined expert opinion and evidence appraisal. Twelve relevant experts addressed dehydration's definition, objective markers and impact on physiology and outcome. Results: Fifteen consensus statements and seven research recommendations were generated. Key findings, evidenced in detail, were that there is no universally accepted definition for dehydration; hydration assessment is complex and requires combining physiological and laboratory variables; "dehydration" and "hypovolaemia" are incorrectly used interchangeably; abnormal hydration status includes relative and/or absolute abnormalities in body water and serum/plasma osmolality (pOsm); raised pOsm usually indicates dehydration; direct measurement of pOsm is the gold standard for determining dehydration; pOsm >300 and ≤280 mOsm/kg classifies a person as hyper or hypo-osmolar; outside extremes, signs of adult dehydration are subtle and unreliable; dehydration is common in hospitals and care homes and associated with poorer outcomes. Discussion: Dehydration poses risk to public health. Dehydration is under-recognized and poorly managed in hospital and community-based care. Further research is required to improve assessment and management of dehydration and the authors have made recommendations to focus academic endeavours. Key messages Dehydration assessment is a major clinical challenge due to a complex, varying pathophysiology, non-specific clinical presentations and the lack of international consensus on definition and diagnosis. Plasma osmolality represents a valuable, objective surrogate marker of hypertonic dehydration which is underutilized in clinical practice. Dehydration is prevalent within the healthcare setting and in the community, and appears associated with increased morbidity and mortality.
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Affiliation(s)
- Jonathan Lacey
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Jo Corbett
- Department of Sport & Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Lui Forni
- Intensive Care Unit, Royal Surrey County Hospital, Guildford, UK
| | - Lee Hooper
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Fintan Hughes
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Gary Minto
- Department of Anaesthesia, University Hospitals Plymouth, Plymouth, UK
- Peninsula School of Medicine, Plymouth, UK
| | - Charlotte Moss
- Division of Surgery & Interventional Science, University College London, London, UK
| | - Susanna Price
- Intensive Care Unit, Royal Brompton Hospital, London, UK
| | - Greg Whyte
- Research Institute for Sport & Exercise Science, Liverpool John Moores University, UK
| | - Tom Woodcock
- Formerly Consultant University Hospitals Southampton NHS Trust, Southampton, UK
| | - Michael Mythen
- Institute of Sport Exercise & Health, University College London, London, UK
| | - Hugh Montgomery
- Centre for Human Health and Performance, University College London, London, UK
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Mayrovitz HN, Arzanova E, Somarriba S, Eisa S. Factors affecting interpretation of tissue dielectric constant (TDC) in assessing breast cancer treatment related lymphedema (BCRL). Lymphology 2019; 52:92-102. [PMID: 31525830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tissue dielectric constant (TDC) measurements are increasingly used as quantitative adjunctive tools to detect and assess lymphedema. Various factors affect measured TDC values that may impact clinical interpretations. Our goal was to investigate possible impacts of: 1) anterior vs. medial arm measures, 2) total body water (TBW%) and arm fat percentages (AF%), 3) measurement depth, and 4) skin firmness. In 40 healthy women (24.5±2.5 years), TDC was measured bilaterally on anterior forearm to 0.5, 1.5, 2.5, and 5.0 mm depths using a multiprobe device and on anterior and medial aspects using a compact device. TBW% and AF% were measured at 50KHz and skin firmness measured by skin indentation force (SIF). Results showed: 1) No statistically significant difference in TDC values between anterior and medial arm, 2) a moderate direct correlation between TDC and TBW% (r=0.512, p=0.001), 3) an inverse correlation between TDC and AF% (r= -0.494, p<0.001) with correlations greatest at the deepest depth, and 4) a slight but statistically significant inverse correlation between TDC and SIF (r= -0.354, p=0.001). TDC values with compact vs. multiprobe were within 6% of each other with interarm (dominant/nondominant) ratios not significantly different. The findings provide a framework to help interpret TDC values among divergent conditions.
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Affiliation(s)
- H N Mayrovitz
- College of Medical Sciences, Nova Southeastern University, Davie, Florida USA
| | - E Arzanova
- College of Medical Sciences, Nova Southeastern University, Davie, Florida USA
| | - S Somarriba
- College of Medical Sciences, Nova Southeastern University, Davie, Florida USA
| | - S Eisa
- College of Medical Sciences, Nova Southeastern University, Davie, Florida USA
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20
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Šafka V, Fajfrová J, Pavlík V, Kučera O, Hůlek P, Horáček JM. Recommended fluid intake and evidence-based medicine. Cas Lek Cesk 2019; 158:141-146. [PMID: 31416322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Abundant drinking of fluids at any occasion became popular in wealthy society in last decades. It is referred to asserted beneficial health effects, but rationale of these recommendations is disputed in expert environment as hardly traceable and tenable. Authors of the article analyse theoretical issues as well as empiric literary evidence for the current popular recommendation. They find them unfounded and difficult to be defended and the risks of transitive hypo-hydration overestimated. Moreover, they alert true risks of water poisoning we meet not quite rarely in common practice.
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Abstract
Water is essential for metabolism, substrate transport across membranes, cellular homeostasis, temperature regulation, and circulatory function. Although nutritional and physiological research teams and professional organizations have described the daily total water intakes (TWI, L/24h) and Adequate Intakes (AI) of children, women, and men, there is no widespread consensus regarding the human water requirements of different demographic groups. These requirements remain undefined because of the dynamic complexity inherent in the human water regulatory network, which involves the central nervous system and several organ systems, as well as large inter-individual differences. The present review analyzes published evidence that is relevant to these issues and presents a novel approach to assessing the daily water requirements of individuals in all sex and life-stage groups, as an alternative to AI values based on survey data. This empirical method focuses on the intensity of a specific neuroendocrine response (e.g., plasma arginine vasopressin (AVP) concentration) employed by the brain to regulate total body water volume and concentration. We consider this autonomically-controlled neuroendocrine response to be an inherent hydration biomarker and one means by which the brain maintains good health and optimal function. We also propose that this individualized method defines the elusive state of euhydration (i.e., water balance) and distinguishes it from hypohydration. Using plasma AVP concentration to analyze multiple published data sets that included both men and women, we determined that a mild neuroendocrine defense of body water commences when TWI is ˂1.8 L/24h, that 19⁻71% of adults in various countries consume less than this TWI each day, and consuming less than the 24-h water AI may influence the risk of dysfunctional metabolism and chronic diseases.
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Affiliation(s)
- Lawrence E Armstrong
- University of Connecticut, Human Performance Laboratory and Department of Nutritional Sciences, Storrs CT 06269-1110, USA.
| | - Evan C Johnson
- University of Wyoming, Human Integrated Physiology Laboratory, Division of Kinesiology and Health, Laramie, WY 82071, USA.
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Knechtle B, Rosemann T, Nikolaidis PT. Pacing and Changes in Body Composition in 48 h Ultra-Endurance Running-A Case Study. Sports (Basel) 2018; 6:E136. [PMID: 30388759 DOI: 10.3390/sports6040136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 10/29/2018] [Accepted: 10/30/2018] [Indexed: 12/21/2022] Open
Abstract
Pacing has been investigated in elite and master runners competing in marathon and ultra-marathon races up to 100 km and 100 miles, but not in longer ultra-marathons. In this case study, a 54-year-old master ultra-marathoner—intending to achieve as many kilometers as possible in a 48 h run—was examined. The changes in running speed during the race and selected anthropometric characteristics using bioelectrical impedance analysis (i.e., body mass and body water), during and after the race, were analyzed. The runner achieved a total distance of 230 km and running speed decreased non-linearly during the race. Body mass decreased, while percent body water increased, non-linearly, across the race. There was no statistically significant relationship between the decrease in body mass and the increase in percent body water. Considering the popularity of ultra-endurance running races, the findings of the present study offered valuable insight in the pacing and changes of body mass and body water during a 48 h run, and this information can be used by ultra-endurance runners and practitioners working with them.
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Mayrovitz HN. Inter-arm systolic blood pressure dependence on hand dominance. Clin Physiol Funct Imaging 2018; 39:35-41. [PMID: 29938907 DOI: 10.1111/cpf.12536] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/06/2018] [Indexed: 12/23/2022]
Abstract
Inter-arm systolic blood pressure differences (SBP-DIFF) ≥ 10 mmHg have been reported useful to predict future cardiovascular-related morbidities. Although well studied in patients, there is little information on healthy young adults and the role of hand-dominance as a factor affecting SBP-DIFF. As dominant arms (DOM) tend to have greater girth and muscle development than nondominant arms (NDOM) it was reasoned that cuff pressures needed to obtain SBP may be greater on DOM causing DOM SBP to be greater. To test this hypothesis and also provide typical values, SBP was measured in left and right-handers (29·4 ± 10·4 years) in whom handedness was clearly defined. Handedness was determined by a multi-question form in 90 young adults (45 male) and SBP-DIFF determined via simultaneous measurements done in triplicate on seated subjects. The percentage of left-handers in male and female sub-groups were equal at 37·8%. Results show that the absolute SBP-DIFF in left-handers (mean ± SD) was 4·4 ± 3·8 mmHg and for right-handers was 5·0 ± 4·2 mmHg (P = 0·362). There was also no statistically significant difference among 1st, 2nd and 3rd measured SBP-DIFF for either right or left-handers or differences between right and left-handers. Results show no evidence of a higher SBP in DOM and thus clarifies the hand-dominance issue as a factor not generally needing to be considered in clinical assessments. A potentially useful secondary outcome was the finding that 14·8% of this group had at least one measured SBP-DIFF ≥ 10 mmHg a fact that may have future relevance.
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Affiliation(s)
- Harvey N Mayrovitz
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
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Laffer CL, Scott RC, Titze JM, Luft FC, Elijovich F. Hemodynamics and Salt-and-Water Balance Link Sodium Storage and Vascular Dysfunction in Salt-Sensitive Subjects. Hypertension 2016; 68:195-203. [PMID: 27160204 PMCID: PMC4900938 DOI: 10.1161/hypertensionaha.116.07289] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 04/05/2016] [Indexed: 01/13/2023]
Abstract
We investigated 24-hour hemodynamic changes produced by salt loading and depletion in 8 salt-sensitive (SS) and 13 salt-resistant (SR) normotensive volunteers. After salt loading, mean arterial pressure was higher in SS (96.5±2.8) than in SR (84.2±2.7 mm Hg), P<0.01, owing to higher total peripheral resistance in SS (1791±148) than in SR (1549±66 dyn*cm(-5)*s), P=0.05, whereas cardiac output was not different between groups (SS 4.5±0.3 versus SR 4.4±0.2 L/min, not significant). Following salt depletion, cardiac output was equally reduced in both groups. Total peripheral resistance increased 24±6% (P<0.001) in SR, whose mean arterial pressure remained unchanged. In contrast, total peripheral resistance did not change in SS (1±6%, not significant). Thus, their mean arterial pressure was reduced, abolishing the mean arterial pressure difference between groups. SS had higher E/e' ratios than SR in both phases of the protocol. In these 21 subjects and in 32 hypertensive patients, Na(+) balance was similar in SR and SS during salt loading or depletion. However, SR did not gain weight during salt retention (-158±250 g), whereas SS did (819±204), commensurate to iso-osmolar water retention. During salt depletion, SR lost the expected amount of weight for iso-osmolar Na(+) excretion, whereas SS lost a greater amount that failed to fully correct the fluid retention from the previous day. We conclude that SS are unable to modulate total peripheral resistance in response to salt depletion, mirroring their inability to vasodilate in response to salt loading. We suggest that differences in water balance between SS and SR indicate differences in salt-and-water storage in the interstitial compartment that may relate to vascular dysfunction in SS.
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Affiliation(s)
- Cheryl L Laffer
- From the Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN (C.L.L., J.M.T., F.C.L., F.E.); Division of Cardiology, Scott and White Health Care, Texas A&M University, Temple (R.C.S.); and Experimental and Clinical Research Center, Max-Delbrück Center, and Charité Medical Faculty, Berlin, Germany (F.C.L.)
| | - Robert C Scott
- From the Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN (C.L.L., J.M.T., F.C.L., F.E.); Division of Cardiology, Scott and White Health Care, Texas A&M University, Temple (R.C.S.); and Experimental and Clinical Research Center, Max-Delbrück Center, and Charité Medical Faculty, Berlin, Germany (F.C.L.)
| | - Jens M Titze
- From the Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN (C.L.L., J.M.T., F.C.L., F.E.); Division of Cardiology, Scott and White Health Care, Texas A&M University, Temple (R.C.S.); and Experimental and Clinical Research Center, Max-Delbrück Center, and Charité Medical Faculty, Berlin, Germany (F.C.L.)
| | - Friedrich C Luft
- From the Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN (C.L.L., J.M.T., F.C.L., F.E.); Division of Cardiology, Scott and White Health Care, Texas A&M University, Temple (R.C.S.); and Experimental and Clinical Research Center, Max-Delbrück Center, and Charité Medical Faculty, Berlin, Germany (F.C.L.)
| | - Fernando Elijovich
- From the Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN (C.L.L., J.M.T., F.C.L., F.E.); Division of Cardiology, Scott and White Health Care, Texas A&M University, Temple (R.C.S.); and Experimental and Clinical Research Center, Max-Delbrück Center, and Charité Medical Faculty, Berlin, Germany (F.C.L.).
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Balestra C, Cimino F, Theunissen S, Snoeck T, Provyn S, Canali R, Bonina A, Virgili F. A red orange extract modulates the vascular response to a recreational dive: a pilot study on the effect of anthocyanins on the physiological consequences of scuba diving. Nat Prod Res 2015; 30:2101-6. [PMID: 26548425 DOI: 10.1080/14786419.2015.1107062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Nutritional antioxidants have been proposed as an expedient strategy to counter the potentially deleterious effects of scuba diving on endothelial function, flow-mediated dilation (FMD) and heart function. Sixteen volunteers performing a single standard dive (20 min at 33 m) according to US Navy diving procedures were randomly assigned to two groups: one was administered with two doses of 200 mg of an anthocyanins (AC)-rich extract from red oranges, 12 and 4 h before diving. Anthocyanins supplementation significantly modulated the effects of diving on haematocrit, body water distribution and FMD. AC administration significantly reduces the potentially harmful endothelial effects of a recreational single dive. The lack of any significant effect on the most common markers of plasma antioxidant capacity suggests that the mechanism underlying this protective activity is independent of the putative antioxidant effect of AC and possibly involves cellular signalling modulation of the response to high oxygen.
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Affiliation(s)
- C Balestra
- a Environmental and Occupational (Integrative) Physiology Laboratory , Haute Ecole Paul Henri Spaak , Brussels , Belgium
| | - F Cimino
- b Department Farmaco-Biologico, School of Pharmacy , University of Messina , Messina , Italy
| | - S Theunissen
- a Environmental and Occupational (Integrative) Physiology Laboratory , Haute Ecole Paul Henri Spaak , Brussels , Belgium
| | - T Snoeck
- c Department of Experimental Anatomy , Vrije Universiteit Brussel , Brussels , Belgium
| | - S Provyn
- c Department of Experimental Anatomy , Vrije Universiteit Brussel , Brussels , Belgium
| | - R Canali
- d Council for Agricultural Research and Economics - Food and Nutrition Research Centre (C.R.A. - NUT) , Rome , Italy
| | | | - F Virgili
- d Council for Agricultural Research and Economics - Food and Nutrition Research Centre (C.R.A. - NUT) , Rome , Italy
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Mayrovitz HN, Grammenos A, Corbitt K, Bartos S. Age-related changes in male forearm skin-to-fat tissue dielectric constant at 300 MHz. Clin Physiol Funct Imaging 2015; 37:198-204. [PMID: 26278683 DOI: 10.1111/cpf.12286] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 06/29/2015] [Indexed: 11/29/2022]
Abstract
Prior research suggests that tissue dielectric constant (TDC) values are useful to assess localized skin water in females for early diagnosing breast cancer treatment-related lymphoedema and TDC values in young adults have shown gender differences. However, no TDC data are available for older males nor have ageing effects been studied despite known shifts in water state and other skin age-related changes. Thus our goals were to (i) characterize TDC values at various skin depths in young and older males, (ii) determine the dependence of these values on body composition parameters and (iii) establish inter-arm TDC ratios for use as normal male reference values. TDC measurements were made to depths of 0·5, 1·5, 2·5 and 5·0 mm bilaterally on volar forearm skin in 60 males in three groups of 20 that had mean ages ± SD of 24·0 ± 0·9, 40·0 ± 12·9 and 71·0 ± 8·0 years. Total body fat and water percentages were determined via bioimpedance at 50 KHz. Results showed that (i) for all age groups TDC values decreased with increasing depth, (ii) TDC values were not statistically different among age groups except at a depth of 0·5 mm, (iii) TDC values were highly negatively correlated with total body fat and (iv) inter-arm ratios varied little among age groups and depths. It is concluded that (i) age-related larger TDC values at only the shallowest depth is consistent with skin water shifting state from bound to more mobile in the oldest group and (ii) inter-arm ratios at any depth provide a basis to test for unilateral oedema.
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Affiliation(s)
- Harvey N Mayrovitz
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Alexandra Grammenos
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Kelly Corbitt
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Simona Bartos
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
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Abstract
BACKGROUND Blood transfusions are associated with significant morbidity and mortality. Prophylactic administration of loop diuretics (furosemide, bumetanide, ethacrynic acid, or torsemide) is common practice, especially among people who are at risk for circulatory overload, pulmonary oedema or both. OBJECTIVES This review aimed to determine if the prophylactic administration of loop diuretics (furosemide, bumetanide, ethacrynic acid, or torsemide) provides a therapeutic advantage (that is, a favourable risk benefit ratio) in adults and children who are recipients of any blood product transfusion versus placebo, no treatment, or general fluid restriction measures. SEARCH METHODS We searched the Cochrane Renal Group's Specialised Register to 13 January 2015 through contact with the Trials' Search Co-ordinator using search terms relevant to this review. SELECTION CRITERIA All randomised controlled trials (RCTs) and quasi-RCTs assessing a loop diuretic in patients receiving any blood transfusion were considered for inclusion. DATA COLLECTION AND ANALYSIS Two authors independently assessed study quality and extracted data. Study authors were contacted for additional information. Results were to be expressed as risk ratios (RR) and their 95% confidence intervals (CI) for dichotomous outcomes, and mean difference (MD) and 95% CI for continuous outcomes. Mean effect sizes were to be calculated using the random-effects models. MAIN RESULTS We included four studies that involved 100 participants. Furosemide was the only diuretic investigated in all four studies.None of the included studies assessed the clinically important outcomes noted in our protocol. The studies focused on various markers of respiratory function. An improvement in fraction of inspired oxygen (in favour of furosemide) was noted in one study. An improvement in pulmonary capillary wedge pressure (in favour of furosemide) was noted in two studies. AUTHORS' CONCLUSIONS There was insufficient evidence to determine whether premedicating people undergoing blood transfusion with loop diuretics prevents clinically important transfusion-related morbidity. Due to the continued use of prophylactic loop diuretics during transfusions, and because this review highlights the absence of evidence to justify this practice, well-conducted RCTs are needed. Given the high mortality, severe morbidity and increasing incidence of transfusion-associated circulatory overload, determining the therapeutic utility of pre-transfusion loop diuresis is an urgent need.
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Affiliation(s)
- Michael Sarai
- Kansas City University of Medicine & BiosciencesCollege of Medicine1750 E Independence AveKansas CityUSA
| | - Aaron M Tejani
- University of British ColumbiaTherapeutics Initiative2176 Health Sciences MallVancouverCanadaV6T 1Z3
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Armstrong LE, Johnson EC, Ganio MS, Judelson DA, Vingren JL, Kupchak BR, Kunces LJ, Muñoz CX, McKenzie AL, Williamson KH. Effective body water and body mass changes during summer ultra-endurance road cycling. J Sports Sci 2014; 33:125-35. [PMID: 24992367 DOI: 10.1080/02640414.2014.932918] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Because body mass change (ΔMb) does not represent all water losses and gains, the present field investigation determined if (a) ΔMb equalled the net effective body water change during ultra-endurance exercise and (b) ground speed and exercise duration influenced these variables. Thirty-two male cyclists (age range, 35-52 years) completed a 164-km event in a hot environment, were retrospectively triplet matched and placed into one of three groups based on exercise duration (4.8, 6.3, 9.6 h). Net effective body water loss was computed from measurements (body mass, total fluid intake and urine excreted) and calculations (water evolved and mass loss due to substrate oxidation, solid food mass and sweat loss), including (ΔEBWgly) and excluding (ΔEBW) water bound to glycogen. With all cyclists combined, the mean ΔMb (i.e. loss) was greater than that of ΔEBWgly by 1200 ± 200 g (P = 1.4 × 10(-18)), was similar to ΔEBW (difference, 0 ± 200 g; P = .21) and was strongly correlated with both (R(2) = .98). Analysis of equivalence indicated that ΔMb was not equivalent to ΔEBWgly, but was equivalent to ΔEBW. Due to measurement complexity, we concluded that (a) athletes will not calculate the effective body water calculations routinely and (b) body mass change remains a useful field-expedient estimate of net effective body water change.
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Affiliation(s)
- Lawrence E Armstrong
- a Department of Kinesiology, Human Performance Laboratory , University of Connecticut , Storrs , CT , USA
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Rubio-Arias H, Rey NI, Quintana RM, Nevarez GV, Palacios O. Coliform and metal contamination in Lago de Colina, a recreational water body in Chihuahua State, Mexico. Int J Environ Res Public Health 2011; 8:2386-400. [PMID: 21776236 DOI: 10.3390/ijerph8062386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 02/22/2011] [Accepted: 02/24/2011] [Indexed: 11/25/2022]
Abstract
Lago de Colina (Colina Lake) is located about 180 km south of the city of Chihuahua (Mexico), and during the Semana Santa (Holy Week) vacation period its recreational use is high. The objective of this study was to quantify coliform and heavy metal levels in this water body before and after the Holy Week vacation period in 2010. Twenty sampling points were randomly selected and two water samples were collected at each point near the surface (0.30 m) and at 1 m depth. After the Holy Week vacation the same twenty points were sampled at the same depths. Therefore, a total 80 water samples were analyzed for fecal and total coliforms and levels of the following metals: Al, As, B, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Si and Zn. It was hypothesized that domestic tourism contaminated this water body, and as a consequence, could have a negative impact on visitor health. An analysis of variance (ANOVA) study was performed for each element and its interactions considering a factorial design where factor A was sample date and factor B was sample depth. Fecal coliforms were only detected at eight sampling points in the first week, but after Holy Week, both fecal and total coliforms were detected at most sampling points. The concentrations of Al, B, Na, Ni and Se were only statistically different for factor A. The levels of Cr, Cu, K and Mg was different for both date and depth, but the dual factor interaction was not significant. The amount of Ca and Zn was statistically different due to date, depth and their interaction. No significant differences were found for any factor or the interaction for the elements As, Fe and Mn. Because of the consistent results, it is concluded that local tourism is contaminating the recreational area of Colina Lake, Chihuahua, Mexico.
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Aslani A, Gill AJ, Roach PJ, Allen BJ, Smith RC. Preoperative body composition is influenced by the stage of operable pancreatic adenocarcinoma but does not predict survival after Whipple's procedure. HPB (Oxford) 2010; 12:325-33. [PMID: 20590908 PMCID: PMC2951821 DOI: 10.1111/j.1477-2574.2010.00171.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Cachexia is common in pancreatic cancer and may have an influence on longterm survival but few studies have investigated this in patients with operable tumours. Therefore, this study was carried out to document body composition status in patients with pancreatic adenocarcinoma (PCa) presenting for a Whipple's procedure (WP) and to relate the findings to histopathology and longterm survival. METHODS Body composition was measured 1 day before a WP for ductal PCa in 36 patients (15 men, 21 women) aged 41-81 years. Results for total body nitrogen (TBN), nitrogen index (NI), total body water (TBW), fat mass (FM) and total body potassium (TBK) were compared with results in 73 age- and sex-matched controls. Patients' survival and details from histopathology synoptic reports were documented. RESULTS Patients undergoing WPs had low TBK values (P < 0.001) and females had lower body fat (P = 0.007) compared with controls. Five of 36 presented with significant protein deficiency, but this was not associated with a prolonged length of stay or reduced survival. The 12 patients who had involved surgical margins had larger tumours and reduced weight (P = 0.015), FM (P = 0.001), TBN (P = 0.045), TBK (P = 0.014) and survival (P = 0.036). However, multivariate Cox's regression analysis only included FM along with vascular invasion and margin status as independent predictors of survival. CONCLUSIONS PCa patients undergoing a WP have reduced body fat and TBK compared with community controls while those with stage III tumours had greater deficits of fat, TBK and protein stores. However, preoperative body composition was a poor predictor of postoperative survival after pathological data were considered.
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Affiliation(s)
- Alireza Aslani
- Department of Nuclear Medicine, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Anthony J Gill
- Department of Anatomical Pathology, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Paul J Roach
- Department of Nuclear Medicine, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Barry J Allen
- Department of Nuclear Medicine, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Ross C Smith
- University Department of Surgery, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
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Abstract
For developing race-specific anthropometry-based total body water (TBW) equations, we measured TBW using bioelectrical impedance analysis (TBW(BIA)) in 2,943 healthy Korean adults. Among them, 2,223 were used as a reference group. Two equations (TBW(K1) and TBW(K2)) were developed based on age, sex, height, and body weight. The adjusted R2 was 0.908 for TBW(K1) and 0.910 for TBW(K2). The remaining 720 subjects were used for the validation of our results. Watson (TBW(W)) and Hume-Weyers (TBW(H)) formulas were also used. In men, TBW(BIA) showed the highest correlation with TBW(H), followed by TBW(K1), TBW(K2) and TBW(W). TBW(K1) and TBW(K2) showed the lower root mean square errors (RMSE) and mean prediction errors (ME) than TBW(W) and TBW(H). On the Bland-Altman plot, the correlations between the differences and means were smaller for TBW(K2) than for TBW(K1). On the contrary, TBW(BIA) showed the highest correlation with TBW(W), followed by TBW(K2), TBW(K1), and TBW(H) in females. RMSE was smallest in TBW(W), followed by TBW(K2), TBW(K1) and TBW(H). ME was closest to zero for TBW(K2), followed by TBW(K1), TBW(W) and TBW(H). The correlation coefficients between the means and differences were highest in TBW(W), and lowest in TBW(K2). In conclusion, TBW(K2) provides better accuracy with a smaller bias than the TBW(W) or TBW(H) in males. TBW(K2) shows a similar accuracy, but with a smaller bias than TBW(W) in females.
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Affiliation(s)
- Moon-Jae Kim
- Division of Nephrology and Hypertension, Department of Internal Medicine, Kidney Disease Research Group, Inha University College of Medicine, Inchon, Korea.
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