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https://www.readbyqxmd.com/read/29417745/effect-of-speed-endurance-training-and-reduced-training-volume-on-running-economy-and-single-muscle-fiber-adaptations-in-trained-runners
#1
Casper Skovgaard, Danny Christiansen, Peter M Christensen, Nicki W Almquist, Martin Thomassen, Jens Bangsbo
The aim of the present study was to examine whether improved running economy with a period of speed endurance training and reduced training volume could be related to adaptations in specific muscle fibers. Twenty trained male (n = 14) and female (n = 6) runners (maximum oxygen consumption (VO2 -max): 56.4 ± 4.6 mL/min/kg) completed a 40-day intervention with 10 sessions of speed endurance training (5-10 × 30-sec maximal running) and a reduced (36%) volume of training. Before and after the intervention, a muscle biopsy was obtained at rest, and an incremental running test to exhaustion was performed...
February 2018: Physiological Reports
https://www.readbyqxmd.com/read/29411507/the-contribution-of-physical-fitness-to-individual-and-ethnic-differences-in-risk-markers-for-type-2-diabetes-in-children-the-child-heart-and-health-study-in-england-chase
#2
Claire M Nightingale, Alicja R Rudnicka, Sarah R Kerry-Barnard, Angela S Donin, Soren Brage, Kate L Westgate, Ulf Ekelund, Derek G Cook, Christopher G Owen, Peter H Whincup
BACKGROUND: The relationship between physical fitness and risk markers for type 2 diabetes (T2D) in children and the contribution to ethnic differences in these risk markers have been little studied. We examined associations between physical fitness and early risk markers for T2D and cardiovascular disease in 9- to 10-year-old UK children. METHODS: Cross-sectional study of 1445 9- to 10-year-old UK children of South Asian, black African-Caribbean and white European origin...
February 7, 2018: Pediatric Diabetes
https://www.readbyqxmd.com/read/29373428/a-four-week-unstructured-break-improved-athletic-performance-in-collegiate-rugby-players
#3
C D Jensen, D Gleason, J M VanNess
This study analyzed the changes in athletic performance and anthropometric characteristics in collegiate male club rugby athletes (n=14) following a four-week winter break. All measurements were collected prior to and after the break. Body composition was assessed by body mass index and hydrostatic weighing. Performance measurements were: VO2 max, vertical jump, 10-yard sprint, squat max, and bench press max. Prior to testing, each subject was acclimated to the protocols to reduce learning effects. During the four-week break, no workouts were provided for the athletes; it was unsupervised and unstructured...
January 24, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29369813/yoga-versus-physical-exercise-for-cardio-respiratory-fitness-in-adolescent-school-children-a-randomized-controlled-trial
#4
Vhavle Satish, Raghavendra Mohan Rao, Nandi Krishnamurthy Manjunath, Ram Amritanshu, Udupa Vivek, Hassan Ratnakar Shreeganesh, Shashidhara Deepashree
Background Yoga is very effective in improving health especially cardio-respiratory fitness and also overall performance in adolescents. There are no large numbers of randomized controlled studies conducted on comparing yoga with physical activity for cardio-respiratory fitness in adolescent school children with large sample size. Objective Aerobic training is known to improve physical and cardio-respiratory fitness in children. Cardio-respiratory fitness is an important indicator of health in children. In this study we evaluate the effects of yoga versus physical exercise training on cardio-respiratory fitness in adolescent school children...
January 25, 2018: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/29366724/effects-of-community-based-exercise-in-adults-with-severe-burns-a-randomized-controlled-trial
#5
Charles D Voigt, Guillermo Foncerrada, Raquel Peña, Ashley N Guillory, Clark R Andersen, Craig G Crandall, Steven E Wolf, David N Herndon, Oscar E Suman
OBJECTIVE: To investigate the efficacy of community-based exercise programs (COMBEX) in the rehabilitation of adult burn patients as compared to standard of care (SOC). DESIGN: Randomized controlled trial, with 2:1 randomization. SETTING: Assessments were performed in a hospital setting. The intervention was performed in a community setting. PARTICIPANTS: Adult patients with ≥ 30% total body surface area burns were randomized to participate in COMBEX (N = 31) or standard of care (SOC) (N = 14)...
January 20, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29351620/correlates-of-atherosclerotic-cardiovascular-disease-risk-in-older-colorado-firefighters
#6
K Li, E Ochoa, T Lipsey, T Nelson
Background: It has been documented that cardiovascular disease is the leading cause of mortality in on-duty firefighters and little is known about the association between cardiorespiratory fitness and 10-year risk of atherosclerotic cardiovascular disease (ASCVD). Aims: To estimate the probability of 10-year ASCVD risk and its association with per cent body fat (%BF), metabolic syndrome (MetS) and physical fitness in Colorado firefighters. Methods: Ten-year ASCVD risk was calculated using the newly developed pooled cohort equations in firefighters...
January 17, 2018: Occupational Medicine
https://www.readbyqxmd.com/read/29210001/high-intensity-exercise-interventions-in-cancer-survivors-a-systematic-review-exploring-the-impact-on-health-outcomes
#7
REVIEW
Kellie Toohey, Kate Pumpa, Andrew McKune, Julie Cooke, Stuart Semple
PURPOSE: There is an increasing body of evidence underpinning high-intensity exercise as an effective and time-efficient intervention for improving health in cancer survivors. The aim of this study was to, (1) evaluate the efficacy and (2) the safety of high-intensity exercise interventions in improving selected health outcomes in cancer survivors. METHODS: Design Systematic review. Data sources Google Scholar and EBSCO, CINAHL Plus, Computers and Applied Sciences Complete, Health Source-Consumer Edition, Health Source: Nursing/Academic Edition, MEDLINE, Web of Science and SPORTDiscuss from inception up until August 2017...
December 5, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29197203/positive-impact-of-prescribed-physical-activity-on-symptoms-of-schizophrenia-randomized-clinical-trial
#8
Dorde Curcic, Tamara Stojmenovic, Slavica Djukic-Dejanovic, Nenad Dikic, Milica Vesic-Vukasinovic, Nenad Radivojevic, Marija Andjelkovic, Milica Borovcanin, Gorica Djokic
BACKGROUND: The purpose of this study was to examine functional capacity of cardio-respiratory system in patients with schizophrenia, and to evaluate the effects of 12 weeks prescribed physical activity on aerobic capacity and symptoms of schizophrenia. SUBJECTS AND METHODS: Study involved 80 hospitalized patients with any of the subtypes of schizophrenia (42 men, 38 women). They were divided into two groups: exercise and control group, both with 40 patients. Maximal aerobic capacity (VO2 max) as an indicator of cardiovascular fitness has been obtained by cardiopulmonary stress test on a treadmill...
December 2017: Psychiatria Danubina
https://www.readbyqxmd.com/read/29184292/cardiopulmonary-rehabilitation-program-impact-on-prognostic-markers-in-selected-patients-with-resting-and-exercise-induced-ventilatory-inefficiency-a-clinical-trial
#9
Sherin Hassan M Mehani, Heba Ahmed A Abdeen
[Purpose] Ventilatory limitation is a common problem in patients with chronic heart failure and pulmonary hypertension. Excess ventilation may arise from augmented ventilatory drive, over activity of chemoreceptors and muscle ergoreceptors, or premature onset of lactic acidosis. Exertional dyspnea can cause limitations in the activities of daily living and as a result, reduced quality of life for these patients. The aim of the present study was to evaluate the effect of cardiopulmonary rehabilitation program on ventilatory efficiency for these patients...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29171557/effects-of-supervised-structured-aerobic-exercise-training-programme-on-level-of-exertion-dyspnoea-vo2-max-and-body-mass-index-in-patients-with-type-2-diabetes-mellitus
#10
Syed Shakil Ur Rehman, Hossein Karimi, Syed Amir Gillani, Shakeel Ahmad
OBJECTIVE: To determine the effects of supervised structured aerobic exercise training programme on level of exertion, dyspnoea, maximum oxygen consumption, and body mass index in type 2 diabetics. METHODS: The randomised, controlled trial was carried out at Riphah Rehabilitation and Research Centre, Islamic International medical College Trust, Pakistan Railways General Hospital, Rawalpindi, Pakistan, from January 2015 to June 2016, and comprised type 2 diabetics...
November 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29170904/effects-of-chronic-endurance-exercise-training-on-serum-25-oh-d-concentrations-in-elderly-japanese-men
#11
Xiaomin Sun, Zhen-Bo Cao, Kumpei Tanisawa, Hirokazu Taniguchi, Takafumi Kubo, Mitsuru Higuchi
BACKGROUND: Higher levels of physical activity and cardiorespiratory fitness are positively related to serum 25-hydroxyvitamin D [25(OH)D] concentrations; however, the response of 25(OH)D concentrations to chronic endurance exercise training is unclear. Therefore, the purpose of this study was to elucidate whether serum 25(OH)D concentrations were directly increased by 5 weeks of endurance exercise training and influenced by changes in body fat in elderly men. METHODS: Twenty elderly Japanese men were randomized to either the 5-week endurance exercise training group (ET group; N = 10) or the sedentary control group (SC group; N = 10)...
November 23, 2017: Endocrine
https://www.readbyqxmd.com/read/29117929/a-fully-automated-web-based-program-improves-lifestyle-habits-and-hba1c-in-patients-with-type-2-diabetes-and-abdominal-obesity-randomized-trial-of-patient-e-coaching-nutritional-support-the-anode-study
#12
Boris Hansel, Philippe Giral, Laetitia Gambotti, Alexandre Lafourcade, Gilbert Peres, Claude Filipecki, Diana Kadouch, Agnes Hartemann, Jean-Michel Oppert, Eric Bruckert, Michel Marre, Arnaud Bruneel, Emilie Duchene, Ronan Roussel
BACKGROUND: The prevalence of abdominal obesity and type 2 diabetes mellitus (T2DM) is a public health challenge. New solutions need to be developed to help patients implement lifestyle changes. OBJECTIVE: The objective of the study was to evaluate a fully automated Web-based intervention designed to help users improve their dietary habits and increase their physical activity. METHODS: The Accompagnement Nutritionnel de l'Obésité et du Diabète par E-coaching (ANODE) study was a 16-week, 1:1 parallel-arm, open-label randomized clinical trial...
November 8, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29111629/effects-of-muay-thai-training-frequency-on-body-composition-and-physical-fitness-in-healthy-untrained-women
#13
Jeniffer A de S Rapkiewicz, João P Nunes, Jerry L Mayhew, Alex Silva Ribeiro, Hellen C Garcez Nabuco, Maria T Fávero, Emerson Franchini, Matheus Amarante do Nascimento
BACKGROUND: The purpose of the study was to compare the effects of different frequencies of Muay Thai training on body composition, and physical fitness in healthy untrained women. METHODS: Twenty women were randomly assigned to one of two training groups: G2X (n = 9) performed Muay Thai twice a week, while G3X (n = 11) performed the same program three times a week, both for 13 weeks. Anthropometric dimensions, fat-free mass, fat mass, resting metabolic rate, VO2 max, upper-body and abdominal muscle endurance, explosive leg power, agility, flexibility, and dietary intake were measured at pre and post-training...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29023325/performance-and-health-related-characteristics-of-male-athletes-using-marijuana
#14
Jonathon K Lisano, Jeremy D Smith, Alissa B Mathias, Matt Christensen, Peter Smoak, Kristina T Phillips, Colin J Quinn, Laura K Stewart
The influence of chronic marijuana use on the performance and health of physically active individuals has yet to be fully elucidated. The purpose of this study was to explore pulmonary function, aerobic and anaerobic fitness, strength, serum testosterone, cortisol, C-reactive protein (CRP), Δ-9-tetrahydrocannibinol (THC), 11-nor-9-carboxy-Δ-9-tetrahydrocannibinol (THC-COOH), and 11-hydroxy-Δ-9-tetrahydrocannibinol (THC-OH) concentrations in a physically active population either using or not using marijuana...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28968018/-body-composition-and-physical-fitness-in-colombian-high-school-students-from-ibagu%C3%A3
#15
Constanza Palomino-Devia, José Antonio González-Jurado, Carlos Alberto Ramos-Parraci
INTRODUCTION: Body composition and other components of physical fitness have proved to be important markers of health condition. OBJECTIVE: To analyze body composition and physical fitness in Colombian students from public high schools of Ibagué, as well as to study differences between sexes and age groups, and establish correlations between some of the variables. MATERIALS AND METHODS: The sample consisted of 1,253 students (601 males; 652 females), with an age range of 10-20 years...
September 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28940974/efficacy-of-constant-load-verification-testing-to-confirm-vo2-max-attainment
#16
Todd A Astorino, Jamie DeRevere
Although maximal oxygen uptake (VO2 max) has been measured for almost 100 years, it is unknown when 'true' VO2 max is attained. Primary (the VO2 plateau) and secondary criteria are used to confirm VO2 max incidence, but frequency of the VO2 plateau varies, and secondary criteria are relatively invalid. The verification test (VER) seems to elicit similar estimates of VO2 max versus the incremental value (INC), yet existing data are limited by small populations and use of inadequate criteria to confirm 'true' VO2 max...
September 22, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28935825/effect-of-tapering-after-a-period-of-high-volume-sprint-interval-training-on-running-performance-and-muscular-adaptations-in-moderately-trained-runners
#17
Casper Skovgaard, Nicki Winfield Almquist, Thue Kvorning, Peter Møller Christensen, Jens Bangsbo
The effect of tapering following a period of high-volume sprint interval training (SIT) and a basic volume of aerobic training on performance and muscle adaptations in moderately trained runners was examined. Eleven (8 males, 3 females) runners (maximum oxygen uptake (VO2-max): 56.8±2.9 mL·min(-1)·kg(-1); mean±SD) conducted high-volume SIT (HV; 20 SIT sessions; 8-12 x 30-s all-out) for 40 days followed by 18 days of tapering (TAP; 4 SIT sessions; 4 x 30-s all-out). Before and after HV as well as midway through and at the end of TAP, the subjects completed a 10-km running test and a repeated running test at 90% of vVO2-max to exhaustion (RRT)...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28925577/sex-and-maturity-status-affected-the-validity-of-a-submaximal-cycle-test-in%C3%A2-adolescents
#18
Frida Björkman, Andrea Eggers, Adam Stenman, Tony Bohman, Björn Ekblom, Örjan Ekblom
AIM: This study assessed the validity and reliability of the Ekblom-Bak (EB) submaximal cycle test in adolescents and identified any sex- or maturity-related factors for prediction errors. METHODS: We recruited 50 healthy subjects through a public announcement in Stockholm, Sweden, in 2016. The 27 boys and 23 girls were aged 10-15 years and in Tanner stages I-IV. They performed an EB test and incremental treadmill running test for direct measurement of maximal oxygen uptake (VO2 max)...
January 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/28877646/comparison-of-canadian-firefighters-and-normal-controls-based-on-the-submaximal-fitness-testing-and-strength-considering-age-and-gender
#19
Goris Nazari, Joy C MacDermid, Kathryn E Sinden R Kin, Tom J Overend
INTRODUCTION: Few studies have addressed whether the firefighters are more fit than the general population and possess sufficient levels of aerobic capacity and muscle strength to perform on duty tasks in a safe and efficient manner, considering age and gender. We aimed to evaluate the fitness levels of Hamilton firefighters, and to determine the effects of age and gender. METHODS: 89 participants were recruited. The Modified Canadian Aerobic Fitness Test was used to determine participants' estimated maximal oxygen consumptions (VO2-max) levels...
September 7, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28869309/resting-heart-rate-heart-rate-reserve-and-metabolic-syndrome-in-professional-firefighters-a-cross-sectional-study
#20
BongKyoo Choi, SangBaek Ko, Stacey Kojaku
BACKGROUND: Little is known about the associations of resting heart rate (RHR) and heart rate reserve (HRR) with metabolic syndrome (MetS) in firefighters. METHODS: For each of 288 professional firefighters, HRR was calculated as the difference between measured RHR and estimated maximum HR. For comparison, VO2 max based on a treadmill test was included. MetS was defined according to the NCEP/ATP III criteria. RESULTS: The prevalence of MetS was 14...
September 4, 2017: American Journal of Industrial Medicine
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