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https://www.readbyqxmd.com/read/29757055/urine-specific-gravity-as-a-practical-marker-for-identifying-sub-optimal-fluid-intake-of-runners-12-h-post-exercise
#1
Eric Kyle O'Neal, Samantha Louise Johnson, Brett Alan Davis, Veronika Pribyslavska, Mary Caitlin Stevenson-Wilcoxson
The legitimacy of urine specific gravity (USG) as a standalone measure to detect hydration status has recently been challenged. As an alternative to hydration status, the purpose of this study was to determine the diagnostic capability of using the traditional USG marker of >1.020 to detect insufficient recovery fluid consumption with consideration for moderate versus high sweat losses (2.00-2.99 or > 3% body mass respectively). Adequate recovery fluid intake (ARFI) was operationally defined as ≥100% beverage fluid intake plus food water from 1 or 2 meals and a snack...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29737816/oral-health-behavior-as-a-risk-factor-for-high-urinary-sodium-among-korean-women
#2
Kyungdo Han, NamRyang Kim, Youngkyung Ko, Yong-Gyu Park, Jun-Beom Park
BACKGROUND AND OBJECTIVES: The purpose of the present study was to investigate the association between urinary sodium, urinary sodium/creatinine, and urinary sodium/urine specific gravity and oral health behavior using nationally representative data. METHODS AND STUDY DESIGN: Data from the Korea National Health and Nutrition Examination Survey were used; the sample analyzed in this study consisted a total of 15,013 respondents over 19 years old who had no missing values for the urinalysis or outcome variables...
2018: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29707541/personalized-hydration-strategy-attenuates-the-rise-in-heart-rate-and-in-skin-temperature-without-altering-cycling-capacity-in-the-heat
#3
Denise de Melo-Marins, Ana Angélica Souza-Silva, Gabriel Lucas Leite da Silva-Santos, Francisco de Assis Freire-Júnior, Jason Kai Wei Lee, Orlando Laitano
The optimal hydration plan [i.e., drink to thirst, ad libitum (ADL), or personalized plan] to be adopted during exercise in recreational athletes has recently been a matter of debate and, due to conflicting results, consensus does not exist. In the present investigation, we tested whether a personalized hydration strategy based on sweat rate would affect cardiovascular and thermoregulatory responses and exercise capacity in the heat. Eleven recreational male cyclists underwent two familiarization cycling sessions in the heat (34°C, 40% RH) where sweat rate was also determined...
2018: Frontiers in Nutrition
https://www.readbyqxmd.com/read/29687613/free-living-continuous-hypo-hydration-and-cardiovascular-response-to-exercise-in-a-heated-environment
#4
Kate S Early, Conrad P Earnest, Bailey Theall, Nathan P Lemoine, Brian Harrell, Neil M Johannsen
Chronic dehydration (DEH) and heat stress combined with poor cardiovascular (CV) health may influence physiological responses to exercise. We examined the effects of free-living induced hypo-hydration on physiological responses to exercise in a heated environment and whether resting CV health is related to these changes. Participants (N = 16, 20.6 ± 1.2 years) were randomized to 3 days of voluntary fluid restriction (DEH) or intake (hydration [HYD]) followed by an exercise bout. CV health was assessed by flow-mediated dilation (FMD), pulse wave analysis, and heart rate variability (HRV)...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29665013/planhab-hypoxia-does-not-worsen-the-impairment-of-skeletal-muscle-oxidative-function-induced-by-bed-rest-alone
#5
Desy Salvadego, Michail E Keramidas, Roger Kölegård, Lorenza Brocca, Stefano Lazzer, Irene Mavelli, Jörn Rittweger, Ola Eiken, Igor B Mekjavic, Bruno Grassi
KEY POINTS: Superposition of hypoxia on 21 day bed rest did not worsen the impairment of skeletal muscle oxidative function induced by bed rest alone. A significant impairment of maximal oxidative performance was identified downstream of cardiovascular O2 delivery, involving both the intramuscular matching between O2 supply and utilization and mitochondrial respiration. These chronic adaptations appear to be relevant in terms of exposure to spaceflights and reduced gravity habitats (Moon or Mars), as characterized by low gravity and hypoxia, in patients with chronic diseases characterized by hypomobility/immobility and hypoxia, as well as in ageing...
April 17, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29623234/the-positive-benefits-of-negative-movement-patterns-following-total-knee-arthroplasty
#6
Jesse C Christensen, K Bo Foreman, Paul C LaStayo
Introduction: Eccentric (negative) resistance exercise of the legs using specialized machines has been reported to be useful and often superior to standard exercise following total knee arthroplasty (TKA). Movements that utilize body mass and gravity as a mode of eccentric resistance exercise in a more pragmatic rehabilitation paradigm may also be useful in reversing chronic muscle impairments observed years following surgery. This study explores whether an eccentrically biased, body mass resistance exercise induces greater magnitude of sagittal plane extensor angular impulse of the support torque and individual net joint torque contributions during both squatting and lunging movement patterns 6 weeks following TKA...
2018: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/29605837/pathophysiology-of-noncardiac-syncope-in-athletes
#7
REVIEW
Georgios A Christou, Konstantinos A Christou, Dimitrios N Kiortsis
The most frequent cause of syncope in young athletes is noncardiac etiology. The mechanism of noncardiac syncope (NCS) in young athletes is neurally-mediated (reflex). NCS in athletes usually occurs either as orthostasis-induced, due to a gravity-mediated reduced venous return to the heart, or in the context of exercise. Exercise-related NCS typically occurs after the cessation of an exercise bout, while syncope occurring during exercise is highly indicative of the existence of a cardiac disorder. Postexercise NCS appears to result from hypotension due to impaired postexercise vasoconstriction, as well as from hypocapnia...
March 31, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29570537/myocellular-responses-to-concurrent-flywheel-training-during-70-days-of-bed-rest
#8
Kevin A Murach, Kiril Minchev, Greg J Grosicki, Kaleen Lavin, Ryan K Perkins, Jeffrey W Ryder, Jessica Scott, Lori Ploutz-Snyder, Todd A Trappe, Scott Trappe
PURPOSE: This investigation evaluated myocellular responses to an integrated resistance and aerobic training program (SPRINT) during 70 days of bed rest. METHODS: Training was six days per week on a small-footprint gravity-independent flywheel resistance and aerobic device (FLY); three days of maximal flywheel supine quadriceps and calf exercises with continuous rowing separated by 4-6 hours, and three days of interval rowing. Vastus lateralis (VL) and soleus (SOL) muscle biopsies were obtained from eight healthy males (age=28±4 y, BMI=25±3 kg•m, VO2max=42±6 ml•kg•min) before and after 6° head-intrdown tilt bed rest...
March 22, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29516039/non-structural-misalignments-of-body-posture-in-the-sagittal-plane
#9
REVIEW
Dariusz Czaprowski, Łukasz Stoliński, Marcin Tyrakowski, Mateusz Kozinoga, Tomasz Kotwicki
Background: The physiological sagittal spinal curvature represents a typical feature of good body posture in the sagittal plane. The cervical and the lumbar spine are curved anteriorly (lordosis), while the thoracic segment is curved posteriorly (kyphosis). The pelvis is inclined anteriorly, and the lower limbs' joints remain in a neutral position. However, there are many deviations from the optimal body alignment.The aim of this paper is to present the most common types of non-structural misalignments of the body posture in the sagittal plane...
2018: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/29484346/factors-associated-with-pre-event-hydration-status-and-drinking-behavior-of-middle-aged-cyclists
#10
B A Yates, L A Ellis, C L Butts, B P McDermott, K H Williamson, L E Armstrong
OBJECTIVES: Water is an essential nutrient for thermoregulation, metabolism, cognition, and overall physiological homeostatic function. However, aging adults display a blunted thirst mechanism and subsequently have an increased risk for dehydration or hyponatremia. Fluid consumption behaviors are modifiable and the importance of practicing adequate drinking behaviors for aging adults is amplified during exercise. Identification of aging adult's hydration beliefs and how they attain hydration advice could provide valuable information into ways to promote better drinking habits to reduce fluid imbalances...
2018: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/29483882/fluid-metabolism-in-athletes-running-seven-marathons-in-seven-consecutive-days
#11
Daniela Chlíbková, Pantelis T Nikolaidis, Thomas Rosemann, Beat Knechtle, Josef Bednář
Purpose: Hypohydration and hyperhydration are significant disorders of fluid metabolism in endurance performance; however, little relevant data exist regarding multi-stage endurance activities. The aim of the present study was to examine the effect of running seven marathons in 7 consecutive days on selected anthropometric, hematological and biochemical characteristics with an emphasis on hydration status. Methods: Participants included 6 women and 20 men (age 42.6 ± 6.2 years). Data was collected before day 1 (B1 ) and after day 1 (A1 ), 4 (A4 ), and 7 (A7 )...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29470804/effects-of-physical-exercise-on-breast-cancer-related-secondary-lymphedema-a-systematic-review
#12
REVIEW
F T Baumann, A Reike, V Reimer, M Schumann, M Hallek, D R Taaffe, R U Newton, D A Galvao
PURPOSE: The aim of this systematic review is to assess the effect of different types of exercise on breast cancer-related lymphedema (BCRL) in order to elucidate the role of exercise in this patient group. METHODS: A systematic data search was performed using PubMed (December 2016). The review is focused on the rehabilitative aspect of BCRL and undertaken according to the PRISMA statement with Levels of Evidence (LoE) assessed. RESULTS: 11 randomized controlled trials (9 with LoE 1a and 2 with LoE 1b) that included 458 women with breast cancer in aftercare were included...
February 22, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29347946/effects-of-long-term-balance-training-with-vibrotactile-sensory-augmentation-among-community-dwelling-healthy-older-adults-a-randomized-preliminary-study
#13
Tian Bao, Wendy J Carender, Catherine Kinnaird, Vincent J Barone, Geeta Peethambaran, Susan L Whitney, Mohammed Kabeto, Rachael D Seidler, Kathleen H Sienko
BACKGROUND: Sensory augmentation has been shown to improve postural stability during real-time balance applications. Limited long-term controlled studies have examined retention of balance improvements in healthy older adults after training with sensory augmentation has ceased. This pilot study aimed to assess the efficacy of long-term balance training with and without sensory augmentation among community-dwelling healthy older adults. METHODS: Twelve participants (four males, eight females; 75...
January 18, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29319761/isotonic-sports-drink-promotes-rehydration-and-decreases-proteinuria-following-karate-training
#14
Simone Geraldini, Igor de Freitas Cruz, Alexandre Romero, Fernando Luiz Affonso Fonseca, Michelle Parreira de Campos
INTRODUCTION: Adequate hydration status in the sport is essential for good health, yet the relationship between hydration, proteinuria and sports is little studied. OBJECTIVE: To analyze the influence of an isotonic sports drink as rehydration strategy on the hydration status and proteinuria after karate training. METHODS: Ten athletes participated in this study. In the first session of standard training, called observation training session (STO), the athletes hydrated themselves according to their habits, and in the second session of standard training, called nutritional intervention training session (STIN), an ideal practice of hydration protocol was followed, using an isotonic sports drink as a rehydration liquid during the training...
October 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29299376/aerobic-anti-gravity-exercise-in-patients-with-charcot-marie-tooth-disease-types-1a-and-x-a-pilot-study
#15
Kirsten L Knak, Linda K Andersen, John Vissing
Background: Charcot-Marie-Tooth (CMT) disease is a hereditary neuropathy associated with impaired walking capacity. Some patients are too weak in the lower extremity muscles to walk at gravity with sufficient intensity or duration to gain benefit. Aim: The aim was to investigate the effect of aerobic anti-gravity exercise in weak patients with CMT 1A and X. Methods: Five adult patients performed moderate-intensity aerobic anti-gravity exercise 3/week for 10 weeks...
December 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29283704/reliability-validity-and-sensitivity-of-a-novel-smartphone-based-eccentric-hamstring-strength-test-in-professional-football-players
#16
Justin W Y Lee, Ming-Jing Cai, Patrick S H Yung, Kai-Ming Chan
PURPOSE: This study aims to evaluate the test-retest reliability, sensitivity and concurrent validity of a smartphone-based method for assessing eccentric hamstring strength among male professional football players. METHODS: Twenty-five healthy male professional football players have performed CUHK Nordic break-point test, hamstring fatigue protocol and isokinetic hamstring strength test. CUHK Nordic break-point test is based on a Nordic hamstring exercise. The Nordic break-point angle was defined as the maximum point where the participants could no longer support the weight of their body against gravity...
December 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29210954/examining-the-influence-of-exercise-intensity-and-hydration-on-gastrointestinal-temperature-in-collegiate-football-players
#17
Julie K DeMartini-Nolan, Jessica L Martschinske, Douglas J Casa, Rebecca M Lopez, Rebecca L Stearns, Matthew S Ganio, Eric Coris
Debate exists regarding the influence of intensity and hydration on body temperature during American football. The purpose of this study was to observe body core temperature responses with changes in intensity and hydration. Twenty-nine male football players (age=21±1y, height=187±9 cm, mass=110.1±23.5 kg, body mass index (BMI)=31.3±5.0, and body surface area (BSA)=2.34±0.27m2) participated in eight days of practice in a warm environment (WBGT:29.6±1.6°C). Participants were identified as Starters (S;n=12) or Non-Starters (NS;n=17) and Linemen (L;n=14) or Non-Linemen (NL;n=15)...
November 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29158619/the-effect-of-mineral-based-alkaline-water-on-hydration-status-and-the-metabolic-response-to-short-term-anaerobic-exercise
#18
Jakub Chycki, Tomasz Zając, Adam Maszczyk, Anna Kurylas
Previously it was demonstrated that mineralization and alkalization properties of mineral water are important factors influencing acid-base balance and hydration in athletes. The purpose of this study was to investigate the effects of drinking different types of water on urine pH, specific urine gravity, and post-exercise lactate utilization in response to strenuous exercise. Thirty-six male soccer players were divided into three intervention groups, consuming around 4.0 l/day of different types of water for 7 days: HM (n=12; highly mineralized water), LM (n=12; low mineralized water), and CON (n=12; table water)...
September 2017: Biology of Sport
https://www.readbyqxmd.com/read/29140134/a-nutrition-recovery-station-following-recreational-exercise-improves-fruit-consumption-but-does-not-influence-fluid-recovery
#19
Ben Desbrow, Katelyn Barnes, Caroline Young, Gregory R Cox, Chris Irwin
Immediate post-exercise access to fruit/fluid via a recovery "station" is a common feature of mass participation sporting events. Yet little evidence exists examining their impact on subsequent dietary intake. The aim of this study was to determine if access to fruit/water/sports drinks within a recovery station significantly alters dietary and fluid intakes in the immediate post-exercise period and influences hydration status the next morning. 127 (79 males) healthy participants (mean±SD, age=22.5±3.5y, body mass (BM)=73±13kg) completed two self-paced morning 10km runs separated by 1 week...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29121510/emg-normalization-method-based-on-grade-3-of-manual-muscle-testing-within-and-between-day-reliability-of-normalization-tasks-and-application-to-gait-analysis
#20
Anne Tabard-Fougère, Kevin Rose-Dulcina, Vincent Pittet, Romain Dayer, Nicolas Vuillerme, Stéphane Armand
Electromyography (EMG) is an important parameter in Clinical Gait Analysis (CGA), and is generally interpreted with timing of activation. EMG amplitude comparisons between individuals, muscles or days need normalization. There is no consensus on existing methods. The gold standard, maximum voluntary isometric contraction (MVIC), is not adapted to pathological populations because patients are often unable to perform an MVIC. The normalization method inspired by the isometric grade 3 of manual muscle testing (isoMMT3), which is the ability of a muscle to maintain a position against gravity, could be an interesting alternative...
February 2018: Gait & Posture
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