Heat Cramps during Tennis: A Case Report

1996 ◽  
Vol 6 (1) ◽  
pp. 62-68 ◽  
Author(s):  
Michael F. Bergeron
Keyword(s):  
Sweat Rate ◽  
Daily Intake ◽  
Blood Chemistry ◽  
Combined Effects ◽  
Match Play ◽  
Daily Dietary Intake ◽  
Dietary Record ◽  
And Training ◽  
Sweat Sodium ◽  
Tennis Match

A 17-year-old, nationally ranked, male tennis player (AH) had been experiencing heat cramps during tennis match play. His medical history and previous physical exams were unremarkable, and his in-office blood chemistry profiles were normal. On-court evaluation and an analysis of a 3-day dietary record revealed that AH's sweat rate was extensive (2.5 L · hr−1) and that his potential daily on-court sweat sodium losses (89.8 mmol · hr of play') could readily exceed his average daily intake of sodium (87.0-174.0 mmol · day−1). The combined effects of excessive and repeated fluid and sodium losses likely predisposed AH to heat cramps during play. AH was ultimately able to eliminate heat cramps during competition and training by increasing his daily dietary intake of sodium.

scholarly journals Fluid Balance and Sodium Losses During Indoor Tennis Match Play

2011 ◽  
Vol 21 (6) ◽  
pp. 492-500 ◽  
Author(s):  
Matthew J.E. Lott ◽  
Stuart D.R. Galloway
Keyword(s):  
Heart Rate ◽  
Body Mass ◽  
Fluid Balance ◽  
Fluid Intake ◽  
Sweat Rate ◽  
Fluid Replacement ◽  
Whole Body ◽  
Electrolyte Balance ◽  
Match Play ◽  
Tennis Match

This study assessed fluid balance, sodium losses, and effort intensity during indoor tennis match play (17 ± 2 °C, 42% ± 9% relative humidity) over a mean match duration of 68.1 ± 12.8 min in 16 male tennis players. Ad libitum fluid intake was recorded throughout the match. Sweat loss from change in nude body mass; sweat electrolyte content from patches applied to the forearm, calf, and thigh, and back of each player; and electrolyte balance derived from sweat, urine, and daily food-intake analysis were measured. Effort intensity was assessed from on-court heart rate compared with data obtained during a maximal treadmill test. Sweat rate (M ± SD) was 1.1 ± 0.4 L/hr, and fluid-ingestion rate was 1.0 ± 0.6 L/hr (replacing 93% ± 47% of fluid lost), resulting in only a small mean loss in body mass of 0.15% ± 0.74%. Large interindividual variabilities in sweat rate (range 0.3–2.0 L/hr) and fluid intake (range 0.31–2.52 L/hr) were noted. Whole-body sweat sodium concentration was 38 ± 12 mmol/L, and total sodium losses during match play were 1.1 ± 0.4 g (range 0.5–1.8 g). Daily sodium intake was 2.8 ± 1.1 g. Indoor match play largely consisted of low-intensity exercise below ventilatory threshold (mean match heart rate was 138 ± 24 beats/min). This study shows that in moderate indoor temperature conditions players ingest sufficient fluid to replace sweat losses. However, the wide range in data obtained highlights the need for individualized fluid-replacement guidance.

Fluid-Electrolyte Balance Associated with Tennis Match Play in a Hot Environment

1995 ◽  
Vol 5 (3) ◽  
pp. 180-193 ◽  
Author(s):  
Michael F. Bergeron ◽  
Carl M. Maresh ◽  
Lawrence E. Armstrong ◽  
Joseph F. Signorile ◽  
John W. Castellani ◽  
...  
Keyword(s):  
Division I ◽  
Electrolyte Balance ◽  
Dietary Intakes ◽  
Match Play ◽  
Tennis Players ◽  
Weight Percentage ◽  
Hot Environment ◽  
Males And Females ◽  
Sweat Sodium ◽  
Tennis Match

Twenty (12 male and 8 female) tennis players from two Division I university tennis teams performed three days of round-robin tournament play (i.e., two singles tennis matches followed by one doubles match per day) in a hot environment (32.2 ±and 53.9 ± 2.4% rh at 1200 hr), so that fluid-electrolyte balance could be evaluated. During singles play, body weight percentage changes were minimal and were similar for males and females (males -1.3 ± 0.8%, females -0.7 ± 0.8%). Estimated daily losses (mmol ·) of sweat sodium (Na+) and potassium (K+) (males,158.7,31.3; females,86.5,18.9) were met by the players' daily dietary intakes (mmol ·) of these electrolytes (males,279.1 ± 109.4,173.5 ± 57.7; females,178.9 ± 68.9,116.1 ± 37.5). Daily plasma volume and electrolyte (Na+,) levels were generally conserved, although, plasma [Na+] was lower (p< .05) on the morning of Day 4. This study indicated that these athletes generally maintained overall fluid-electrolyte balance, in response to playing multiple tennis matches on 3 successive days in a hot environment, without the occurrence of heat illness.

The effect of tennis racket grip size on grip force during a simulated tennis match play

2009 ◽  
Vol 12 (sup1) ◽  
pp. 219-220 ◽  
Author(s):  
J. Rossi ◽  
M.J. Foissac ◽  
L. Vigouroux ◽  
E. Berton
Keyword(s):  
Grip Force ◽  
Match Play ◽  
Tennis Racket ◽  
Tennis Match

APPLICATION OF PIXE TECHNIQUE TO DETERMINATION OF TRACE ELEMENTS IN DIET AND COMPARISON WITH NAA AND ICP-AES

1996 ◽  
Vol 06 (01n02) ◽  
pp. 395-403
Author(s):  
Masae Yukawa ◽  
Yoshito Watanabe ◽  
Yoshikazu Nishimura ◽  
Mieko Kimura
Keyword(s):  
Trace Elements ◽  
South America ◽  
Daily Intake ◽  
Radiation Doses ◽  
Internal Radiation ◽  
Pixe Analysis ◽  
Daily Dietary Intake ◽  
Elemental Concentrations ◽  
Total Diet

PIXE technique was applied to measurement of trace elements in total diet samples collected in Japan for estimation of their daily dietary intake. Results of PIXE analysis were compared with INAA Concentration of Cl, K, Mn and Zn by PIXE analysis well agreed with the results from NAA, while Ca, Fe and Cu showed different results between these two techniques. Preliminary data of elemental concentrations in Mate-cha, a kind of tea popular in South America, determined by ICP-AES indicated a little higher concentration of Cu than that by PIXE and much lower value than that by INAA For Zn. concentrations by PIXE and ICP well agreed to each other, while INAA gave much lower value. Japanese internal radiation doses by 137 Cs and 90 Sr were estimated to be 2.30µSv/year and 1.27µSv/year respectively as the effective dose equivalents using the daily intake data obtained for K and Ca.

Effects of in-play cooling during simulated tennis match play in the heat on performance, physiological and perceptual measures

2021 ◽  
Vol 61 (3) ◽  
Author(s):  
Thimo WIEWELHOVE ◽  
Fabian CONRADT ◽  
Scott RAWLINS ◽  
Jay DEACON ◽  
Tim MEYER ◽  
...  
Keyword(s):  
Match Play ◽  
Tennis Match

scholarly journals Plasma aldosterone and sweat sodium concentrations after exercise and heat acclimation

1986 ◽  
Vol 61 (3) ◽  
pp. 967-970 ◽  
Author(s):  
C. R. Kirby ◽  
V. A. Convertino
Keyword(s):  
Sweat Rate ◽  
Total Content ◽  
Heat Acclimation ◽  
Eccrine Sweat Gland ◽  
Plasma Aldosterone ◽  
Exercise Heart Rate ◽  
Sodium Reabsorption ◽  
Plasma Aldosterone Concentration ◽  
The Relationship ◽  
Sweat Sodium

This investigation was designed to determine the relationship between the levels of plasma aldosterone and eccrine sweat gland sodium excretion following exercise and heat acclimation. Ten subjects exercised at 45% of their maximal O2 uptake in a hot (40 degrees C), moderately humid (45% relative humidity) environment for 2 h/day on ten consecutive days. Acclimation was verified by significant reductions in exercise heart rate, rectal temperature, and heat storage, as well as significant elevation of resting plasma volume (12%, P less than 0.05) and exercise sweat rate on day 10 compared with day 1 of acclimation. During exercise, the concentration and total content of sodium in sweat as well as plasma aldosterone were significantly decreased from day 1 to day 10. The ratio of sweat sodium reabsorbed to plasma aldosterone concentration was significantly increased from day 1 to day 10 after both 1 and 2 h of exercise. These data indicate that plasma aldosterone concentrations decrease following heat acclimation; and eccrine gland responsiveness to aldosterone, as represented by sweat sodium reabsorption, may be augumented through exercise and heat acclimation.

scholarly journals EVIDENT Smartphone App, a New Method for the Dietary Record: Comparison With a Food Frequency Questionnaire (Preprint)

2018 ◽  
Author(s):  
Jose I Recio-Rodriguez ◽  
Carmela Rodriguez-Martin ◽  
Jesus Gonzalez-Sanchez ◽  
Emiliano Rodriguez-Sanchez ◽  
Carme Martin-Borras ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Food Intake ◽  
Alcohol Consumption ◽  
Energy Intake ◽  
Food Frequency Questionnaire ◽  
Daily Intake ◽  
Smartphone App ◽  
Food Frequency ◽  
Dietary Record ◽  
Macro And Micronutrients

BACKGROUND More alternatives are needed for recording people’s normal diet in different populations, especially adults or the elderly, as part of the investigation into the effects of nutrition on health. OBJECTIVE The aim of this study was to compare the estimated values of energy intake, macro- and micronutrient, and alcohol consumption gathered using the EVIDENT II smartphone app against the data estimated with a food frequency questionnaire (FFQ) in an adult population aged 18 to 70 years. METHODS We included 362 individuals (mean age 52 years, SD 12; 214/362, 59.1% women) who were part of the EVIDENT II study. The participants registered their food intake using the EVIDENT app during a period of 3 months and through an FFQ. Both methods estimate the average nutritional composition, including energy intake, macro- and micronutrients, and alcohol. Through the app, the values of the first week of food recording, the first month, and the entire 3-month period were estimated. The FFQ gathers data regarding the food intake of the year before the moment of interview. RESULTS The intraclass correlation for the estimation of energy intake with the FFQ and the app shows significant results, with the highest values returned when analyzing the app’s data for the full 3-month period (.304, 95% CI 0.144-0.434; P<.001). For this period, the correlation coefficient for energy intake is .233 (P<.001). The highest value corresponds to alcohol consumption and the lowest to the intake of polyunsaturated fatty acids (r=.676 and r=.155; P<.001), respectively. The estimation of daily intake of energy, macronutrients, and alcohol presents higher values in the FFQ compared with the EVIDENT app data. Considering the values recorded during the 3-month period, the FFQ for energy intake estimation (Kcal) was higher than that of the app (a difference of 408.7, 95% CI 322.7-494.8; P<.001). The same is true for the other macronutrients, with the exception g/day of saturated fatty acids (.4, 95% CI −1.2 to 2.0; P=.62). CONCLUSIONS The EVIDENT app is significantly correlated to FFQ in the estimation of energy intake, macro- and micronutrients, and alcohol consumption. This correlation increases with longer app recording periods. The EVIDENT app can be a good alternative for recording food intake in the context of longitudinal or intervention studies. CLINICALTRIAL ClinicalTrials.gov NCT02016014; http://clinicaltrials.gov/ct2/show/NCT02016014 (Archived by WebCite at http://www.webcitation.org/760i8EL8Q)

Essential and trace elements status in the indigenous Ethiopian tuber crops

2019 ◽  
Vol 108 (1) ◽  
pp. 51-56
Author(s):  
Tamene Hailu Melkegna ◽  
Ashok Kumar Chaubey ◽  
Sunday Adesunloye Jonah ◽  
Yusuf Aminu Ahmed ◽  
Nuruddeen Abubakar
Keyword(s):  
Trace Elements ◽  
International Organizations ◽  
Nuclear Reactor ◽  
Daily Intake ◽  
Energy Research ◽  
The Status ◽  
Constituent Elements ◽  
Essential And Trace Elements ◽  
And Training ◽  
Tuber Crops

Abstract The objective of the study is multi elemental analysis of four indigenous Ethiopian tuber crops using instrumental neutron activation analysis (INAA) technique in order to get scientific evidences about the status of essential, trace and non-essential elemental compositions. The samples were collected from Southern and South-western parts of Ethiopia. The irradiation and measurement were performed by using irradiation and counting facilities of the Nigeria Nuclear Reactor-1 (NIRR-1) and a HPGe detector setup at the Centre for Energy Research and Training (CERT), Ahmadu Bello University (ABU), Zaria, Nigeria. A total of 17 elements were determined at various concentration levels. The highest concentrations of K, Mg, Mn and Zn were found in Colocasia esculenta (L.) Schott, whereas; the concentrations of essential and trace elements; Ca, K, Mg, Na, Cl, Mn, and Zn were found to be high in the native Coccinia abyssinica (Lam.) Cogn tuber. The estimated daily intake values of the constituent elements from the consumption of these crops are below upper tolerable limits set by international organizations such as WHO and FAO.

scholarly journals Consecutive Days of Prolonged Tennis Match Play: Performance, Physical, and Perceptual Responses in Trained Players

2015 ◽  
Vol 10 (7) ◽  
pp. 913-920 ◽  
Author(s):  
Danielle T. Gescheit ◽  
Stuart J. Cormack ◽  
Machar Reid ◽  
Rob Duffield
Keyword(s):  
Effect Size ◽  
Perceived Exertion ◽  
Voluntary Contraction ◽  
Rating Of Perceived Exertion ◽  
Perceptual Training ◽  
Match Play ◽  
Tennis Players ◽  
Playing Time ◽  
Distress Scale ◽  
Tennis Match

Purpose:To determine how consecutive days of prolonged tennis match play affect performance, physiological, and perceptual responses.Methods:Seven well-trained male tennis players completed 4-h tennis matches on 4 consecutive days. Pre- and postmatch measures involved tennis-specific (serve speed and accuracy), physical (20-m sprint, countermovement jump [CMJ], shoulder-rotation maximal voluntary contraction, isometric midthigh pull), perceptual (Training Distress Scale, soreness), and physiological (creatine kinase [CK]) responses. Activity profile was assessed by heart rate, 3D load (accumulated accelerations measured by triaxial accelerometers), and rating of perceived exertion (RPE). Statistical analysis compared within- and between-days values. Changes (± 90% confidence interval [CI]) ≥75% likely to exceed the smallest important effect size (0.2) were considered practically important.Results:3D load reduced on days 2 to 4 (mean effect size ± 90% CI –1.46 ± 0.40) and effective playing time reduced on days 3 to 4 (–0.37 ± 0.51) compared with day 1. RPE did not differ and total points played only declined on day 3 (–0.38 ± 1.02). Postmatch 20-m sprint (0.79 ± 0.77) and prematch CMJ (–0.43 ± 0.27) performance declined on days 2 to 4 compared with prematch day 1. Although serve velocity was maintained, compromised postmatch serve accuracy was evident compared with prematch day 1 (0.52 ± 0.58). CK increased each day, as did ratings of muscle soreness and fatigue.Conclusions:Players reduced external physical loads, through declines in movement, over 4 consecutive days of prolonged competitive tennis. This may be affected by tactical changes and pacing strategies. Alongside this, impairments in sprinting and jumping ability, perceptual and biochemical markers of muscle damage, and reduced mood states may be a function of neuromuscular and perceptual fatigue.

scholarly journals Metals Uptake by Wastewater Irrigated Vegetables and their Daily Dietary Intake in Peshawar, Pakistan / Pobieranie Metali Przez Warzywa Nawadniane Ściekami I Ich Dzienne Stężenie W Diecie Ludności Peszawaru, Pakistan

2015 ◽  
Vol 22 (1) ◽  
pp. 125-139 ◽  
Author(s):  
Sher Ali Khan ◽  
Xiaoyu Liu ◽  
Bakht Ramin Shah ◽  
Wenting Fan ◽  
Hong Li ◽  
...  
Keyword(s):  
Waste Water ◽  
Daily Intake ◽  
Estimated Daily Intake ◽  
Daily Dietary Intake ◽  
Maximum Accumulation ◽  
Long Run ◽  
Accumulation Of Metals ◽  
Us Epa ◽  
Tube Well ◽  
Edible Parts

Abstract Vegetables are important source of nutrients for human body. Wastewater irrigation may lead to contamination of these vegetables and cause possible health risk. In the present study impact of waste water irrigation on metals uptake (Fe, Mn, Ni, Co, Zn, Cd, Cr and Pb) by five commonly consumed vegetables (radish, cabbage, lettuce, cauliflower and spinach) grown in the suburbs of Peshawar were investigated using AAS (Atomic Absorption spectrophotometer). The uptake and accumulation of metals for vegetables irrigated with wastewater were significantly (p < 0.05) higher than tube well irrigated vegetables and permissible limits of WHO/FAO. Among the edible parts of vegetables maximum accumulation of Mn, Pb and Cd occurred in radish followed by Ni and Fe in spinach while Cr and Zn were high in cauliflower and cabbage. The estimated daily intake of metals (DIM) revealed that at present the consumption of studied vegetables were under the tolerable limits of (US-EPA, IRIS), however intake of metals in waste water irrigated vegetables were significantly high and can cause health hazards in the long run

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