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All about optimizing fitness!: ParuchMD

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15 papers 25 to 100 followers
By John Paruch Combined training in Internal Medicine-Psychiatry with holistic, evidence-based, preventive approach to implementation and promotion of wellness.
S A Kavouras, G Arnaoutis, M Makrillos, C Garagouni, E Nikolaou, O Chira, E Ellinikaki, L S Sidossis
We aimed to evaluate whether an intervention program emphasizing in increased fluid intake can improve exercise performance in children exercising in the heat. Ninety-two young athletes participated in the study (age: 13.8 ± 0.4 years, weight: 54.9 ± 1.5 kg). Thirty-one (boys: 13, girls: 18) children served as the control group (CON) and 61 (boys: 30, girls: 31) as the intervention (INT). Volunteers had free access to fluids. Hydration was assessed on the basis of first morning urine. A series of field tests were used to evaluate exercise performance...
October 2012: Scandinavian Journal of Medicine & Science in Sports
Mingyang Song, Edward Giovannucci
IMPORTANCE: Lifestyle factors are important for cancer development. However, a recent study has been interpreted to suggest that random mutations during stem cell divisions are the major contributor to human cancer. OBJECTIVE: To estimate the proportion of cases and deaths of carcinoma (all cancers except skin, brain, lymphatic, hematologic, and nonfatal prostate malignancies) among whites in the United States that can be potentially prevented by lifestyle modification...
September 1, 2016: JAMA Oncology
Ina Garthe, Truls Raastad, Per Egil Refsnes, Jorunn Sundgot-Borgen
Strength training and positive energy intake are the most important factors related to lean body mass (LBM) gain. Most studies investigating weight-gain interventions are based recreationally active subjects and less is known about optimal weight-gain protocols in elite athletes. The purpose of this study was to evaluate the effect of nutritional guidance in an 8- to 12-week weight-gain period in elite athletes. Thirty-nine elite athletes were randomised to either a 'nutritional counseling group' (NCG, n=21, 19...
2013: European Journal of Sport Science
Laurie Wideman, Judy Y Weltman, Mark L Hartman, Johannes D Veldhuis, Arthur Weltman
Exercise is a potent physiological stimulus for growth hormone (GH) secretion, and both aerobic and resistance exercise result in significant, acute increases in GH secretion. Contrary to previous suggestions that exercise-induced GH release requires that a "threshold" intensity be attained, recent research from our laboratory has shown that regardless of age or gender, there is a linear relationship between the magnitude of the acute increase in GH release and exercise intensity. The magnitude of GH release is greater in young women than in young men and is reduced by 4-7-fold in older individuals compared with younger individuals...
2002: Sports Medicine
Richard J Godfrey, Zahra Madgwick, Gregory P Whyte
Human growth hormone (hGH) is secreted in a pulsatile fashion, generally following a circadian rhythm. A number of physiological stimuli can initiate hGH secretion, the most powerful, non-pharmacological of which are sleep and exercise. hGH has many varied roles throughout life, from growth itself, including the turnover of muscle, bone and collagen, to the regulation of selective aspects of metabolic function including increased fat metabolism and the maintenance of a healthier body composition in later life...
2003: Sports Medicine
Kimberly Fairbrother, Ben Cartner, Jessica R Alley, Chelsea D Curry, David L Dickinson, David M Morris, Scott R Collier
BACKGROUND: During nocturnal sleep, blood pressure (BP) "dips" compared to diurnal BP, reducing stress on the cardiovascular system. Both the hypotensive response elicited by acute aerobic exercise and sleep quality can impact this dipping response. PURPOSE: The purpose of this study was to investigate the effects of aerobic exercise timing on circadian BP changes and sleep architecture. MATERIALS AND METHODS: Twenty prehypertensive subjects completed the study...
2014: Vascular Health and Risk Management
Lee J Wylie, Stephen J Bailey, James Kelly, James R Blackwell, Anni Vanhatalo, Andrew M Jones
PURPOSE: This study tested the hypothesis that nitrate (NO3-) supplementation would improve performance during high-intensity intermittent exercise featuring different work and recovery intervals. METHOD: Ten male team-sport players completed high-intensity intermittent cycling tests during separate 5-day supplementation periods with NO3 (-)-rich beetroot juice (BR; 8.2 mmol NO3- day(-1)) and NO3 (-)-depleted beetroot juice (PL; 0.08 mmol NO3- day(-1)). Subjects completed: twenty-four 6-s all-out sprints interspersed with 24 s of recovery (24 × 6-s); seven 30-s all-out sprints interspersed with 240 s of recovery (7 × 30-s); and six 60-s self-paced maximal efforts interspersed with 60 s of recovery (6 × 60-s); on days 3, 4, and 5 of supplementation, respectively...
February 2016: European Journal of Applied Physiology
Tyvin A Rich, Robert Pfister, John Alton, David Gerdt, Martin Baruch
Introduction. Athletes who develop an immunosuppressed state because of intensive training get upper respiratory infections (URIs) and may respond to meditation. Reflective exercise (RE), a westernized form of Qigong, combines meditation, breathing, and targeted mental attention to an internal pulsatile sensation, previously shown to protect varsity swimmers from URIs during the height of training. We report here the evaluation of cardiovascular parameters measured during meditation combined with targeted imagery (interoception) in a cohort of varsity swimmers taught RE...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
Bernard C K Choi, Anita W P Pak, Jerome C L Choi, Elaine C L Choi
BACKGROUND: This review looks at ways to increase physical activity, by walking and other sports and home activities, to reach the daily 10,000 steps goal. It also looks at a number of issues associated with achieving the daily step goal, such as considerations in walking, step counting and physical activity. METHODS: The review is based on MEDLINE (1982-2006) and Google searches using keywords "pedometer", "daily step goal", "physical activity", "exercise". RESULTS: Research has suggested a daily 10,000 step goal for maintaining a desirable level of physical activity for health...
2007: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
Catrine Tudor-Locke, David R Bassett
Pedometers are simple and inexpensive body-worn motion sensors that are readily being used by researchers and practitioners to assess and motivate physical activity behaviours. Pedometer-determined physical activity indices are needed to guide their efforts. Therefore, the purpose of this article is to review the rationale and evidence for general pedometer-based indices for research and practice purposes. Specifically, we evaluate popular recommendations for steps/day and attempt to translate existing physical activity guidelines into steps/day equivalents...
2004: Sports Medicine
Richard J Maddock, Gretchen A Casazza, Dione H Fernandez, Michael I Maddock
Converging evidence demonstrates that physical activity evokes a brain state characterized by distinctive changes in brain metabolism and cortical function. Human studies have shown that physical activity leads to a generalized increase in electroencephalography power across regions and frequencies, and a global increase in brain nonoxidative metabolism of carbohydrate substrates. This nonoxidative consumption of carbohydrate has been hypothesized to include increased de novo synthesis of amino acid neurotransmitters, especially glutamate and GABA...
February 24, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
Ville Vesterinen, Ari Nummela, Ida Heikura, Tanja Laine, Esa Hynynen, Javier Botella, Keijo Häkkinen
INTRODUCTION: Measures of HR variability (HRV) have shown potential to be of use in training prescription. PURPOSE: The aim of this study was to investigate the effectiveness of using HRV in endurance training prescription. METHODS: Forty recreational endurance runners were divided into the HRV-guided experimental training group (EXP) and traditional predefined training group (TRAD). After a 4-wk preparation training period, TRAD trained according to a predefined training program including two to three moderate- (MOD) and high-intensity training (HIT) sessions per week during an 8-wk intensive training period...
July 2016: Medicine and Science in Sports and Exercise
Julien D Périard, Gavin J S Travers, Sébastien Racinais, Michael N Sawka
This review examines the cardiovascular adaptations along with total body water and plasma volume adjustments that occur in parallel with improved heat loss responses during exercise-heat acclimation. The cardiovascular system is well recognized as an important contributor to exercise-heat acclimation that acts to minimize physiological strain, reduce the risk of serious heat illness and better sustain exercise capacity. The upright posture adopted by humans during most physical activities and the large skin surface area contribute to the circulatory and blood pressure regulation challenge of simultaneously supporting skeletal muscle blood flow and dissipating heat via increased skin blood flow and sweat secretion during exercise-heat stress...
April 2016: Autonomic Neuroscience: Basic & Clinical
Stuart A Armstrong, Eloise S Till, Stephen Maloney, Gregory Harris
Compression socks have become a popular recovery aid for distance running athletes. Although some physiological markers have been shown to be influenced by wearing these garments, scant evidence exists on their effects on functional recovery. This research aims to shed light onto whether the wearing of compression socks for 48 hours after marathon running can improve functional recovery, as measured by a timed treadmill test to exhaustion 14 days following marathon running.Athletes (n=33, age = 38.5 ±7.2yrs) participating in the 2012 Melbourne, 2013 Canberra or 2013 Gold Coast marathons were recruited and randomised into the compression sock or placebo group...
September 2, 2014: Journal of Strength and Conditioning Research
Wolfgang Kemmler, Simon von Stengel, Christina Köckritz, Jerry Mayhew, Alfred Wassermann, Jürgen Zapf
The purpose of this study was to determine the effect of below-knee compression stockings on running performance in men runners. Using a within-group study design, 21 moderately trained athletes (39.3 +/- 10.9 years) without lower-leg abnormities were randomly assigned to perform a stepwise treadmill test up to a voluntary maximum with and without below-knee compressive stockings. The second treadmill test was completed within 10 days of recovery. Maximum running performance was determined by time under load (minutes), work (kJ), and aerobic capacity (ml...
January 2009: Journal of Strength and Conditioning Research
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