keyword
MENU ▼
Read by QxMD icon Read
search

Exercise Performance

keyword
https://www.readbyqxmd.com/read/28214385/temporal-changes-in-physiology-and-haematology-in-response-to-high-and-micro-doses-of-recombinant-human-erythropoietin
#1
Brad Clark, Sarah M Woolford, Annette Eastwood, Ken Sharpe, Peter G Barnes, Christopher J Gore
There is evidence to suggest athletes have adopted recombinant human erythropoietin (rHuEPO) dosing regimens that diminish the likelihood they will be caught by direct detection techniques. However, the temporal response in physiology, performance and athlete biological passport (ABP) parameters to such regimens is not clearly understood. Participants were assigned to a high dose only group (HIGH, n = 8, six rHuEPO doses of 250 IU/kg over two weeks), a combined high micro-dose group (COMB, n = 8, high dose plus nine rHuEPO micro-doses over a further three weeks), or one of two placebo control groups who received saline in the same pattern as the HIGH (HIGH-PLACEBO, n = 4) or COMB (COMB-PLACEBO, n = 4) groups...
February 18, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28214295/blood-flow-restriction-increases-metabolic-stress-but-decreases-muscle-activation-during-high-load-resistance-exercise
#2
Emerson L Teixeira, Renato Barroso, Carla Silva-Batista, Gilberto C Laurentino, Jeremy P Loenneke, Hamilton Roschel, Carlos Ugrinowitsch, Valmor Tricoli
INTRODUCTION: We investigated differences in metabolic stress (lactate) and muscle activation (electromyography) when high load exercise is compared to a condition where blood flow restriction (BFR) is applied during the exercise or during the rest interval. METHODS: Twelve participants performed high load resistance exercise with BFR during the intervals (BFR-I), during the set (BFR-S) and without BFR (HL). Each condition consisted of 3 sets of 8 repetitions with knee-extension at 70% of one-repetition-maximum...
February 18, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28214133/dynamic-hyperinflation-in-patients-with-asthma-and-exercise-induced-bronchoconstriction
#3
Olga Mediano, Raquel Casitas, Carlos Villasante, Elisabet Martínez-Cerón, Raúl Galera, Ester Zamarrón, Francisco García-Río
BACKGROUND: Little is known about the behavior of operative lung volumes during exercise in patients with asthma and exercise-induced bronchoconstriction (EIB). OBJECTIVES: To compare the presence of dynamic hyperinflation (DH) in patients with mild asthma with and without EIB and in healthy individuals and to relate the changes in end-expiratory lung volume (EELV) with postexercise airflow reduction. METHODS: A total of 122 consecutive stable patients (>12 years of age) with mild asthma and 38 controls were studied...
February 14, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28214051/effects-of-a-straw-phonation-protocol-on-acoustic-measures-of-an-satb-chorus-singing-two-contrasting-renaissance-works
#4
Jeremy N Manternach, Chad Clark, James F Daugherty
BACKGROUND: Researchers have found that semi-occluded vocal tract (SOVT) exercises may increase vocal economy by reducing phonation threshold pressure and effort while increasing or maintaining consistent acoustic output. This research has focused solely on individual singers. Much singing instruction, however, takes place in choral settings. Choral singers may use different resonance strategies or unconsciously adjust their singing based on the ability to hear their own sound in relation to others...
February 14, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28213750/effect-of-an-acute-dose-of-omega-3-fish-oil-following-exercise-induced-muscle-damage
#5
J R Jakeman, D M Lambrick, B Wooley, J A Babraj, J A Faulkner
PURPOSE: The purpose of this double-blind, placebo-controlled study was to examine the effect of two fish oil supplements, one high in EPA (750 mg EPA, 50 mg DHA) and one low in EPA (150 mg EPA, 100 mg DHA), taken acutely as a recovery strategy following EIMD. METHODS: Twenty-seven physically active males (26 ± 4 year, 1.77 ± 0.07 m, 80 ± 10 kg) completed 100 plyometric drop jumps to induce muscle damage. Perceptual (perceived soreness) and functional (isokinetic muscle strength at 60° and 180° s(-1), squat jump performance and countermovement jump performance) indices of EIMD were recorded before, and 1, 24, 48, 72, and 96h after the damaging protocol...
February 17, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28212587/prevalence-of-urinary-incontinence-in-females-performing-high-impact-exercises
#6
Magdaléna Hagovska, Ján Švihra, Alena Buková, Agáta Hrobacz, Dana Dračková, Viera Švihrová, Lenka Kraus
The aim of this cross-sectional study was to monitor the prevalence of symptoms of stress (SUI) and mixed urinary incontinence (MUI) in sportswomen performing high-impact exercises. A further objective was to compare the symptoms of urinary incontinence (UI) and quality of life in sportswomen. We used the International Consultation on Incontinence Questionnaire (ICIQ-SF), the Overactive Bladder Questionnaire (OAB-q), the Urinary Incontinence Quality of Life Scale (I-QOL) and the International Physical Activity Questionnaire (IPAQ), short version...
February 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28212449/energy-intake-and-energy-expenditure-of-pre-professional-female-contemporary-dancers
#7
Meghan A Brown, Glyn Howatson, Edel Quin, Emma Redding, Emma J Stevenson
Many athletes in aesthetic and weight dependent sports are at risk of energy imbalance. However little is known about the exercise and eating behaviours of highly trained dance populations. This investigation sought to determine the energy intake and energy expenditure of pre-professional female contemporary dancers. Twenty-five female contemporary dance students completed the study. Over a 7-day period, including five week days (with scheduled dance training at a conservatoire) and two weekend days (with no scheduled dance training at the conservatoire), energy intake (self-reported weighed food diary and 24 h dietary recall) and expenditure (tri-axial accelerometry) were recorded...
2017: PloS One
https://www.readbyqxmd.com/read/28212202/psychometric-evaluation-of-the-adolescent-health-promotion-scale-in-chile-differences-by-socioeconomic-status-and-gender
#8
Cristian A Rojas-Barahona, Jorge Gaete, Esterbina Olivares, Carla E Förster, Eugenio Chandia, Mei-Yen Chen
BACKGROUND: The promotion of healthy behaviors is a relevant issue worldwide, especially among adolescent populations, as this is the developmental stage where most unhealthy behaviors become ingrained. PURPOSE: The aim of this study was to analyze the psychometric properties of the Spanish version of the Adolescent Health Promotion Scale (AHPS) in a Chilean sample of early adolescents. METHODS: The sample was composed of 1,156 adolescents aged 10-14 years from schools in San Felipe, Chile...
February 16, 2017: Journal of Nursing Research: JNR
https://www.readbyqxmd.com/read/28212075/towards-photoplethysmography-based-estimation-of-instantaneous-heart-rate-during-physical-activity
#9
Delaram Jarchi, Alex Casson
OBJECTIVE: Recently numerous methods have been proposed for estimating average heart rate using photoplethysmography (PPG) during physical activity, overcoming the significant interference that motion causes in PPG traces. We propose a new algorithm framework for extracting instantaneous heart rate from wearable PPG and ECG signals to provide an estimate of heart rate variability during exercise. METHODS: For ECG signals we propose a new spectral masking approach which modifies a particle filter tracking algorithm, and for PPG signals constrains the instantaneous frequency obtained from the Hilbert transform to a region of interest around a candidate heart rate measure...
February 13, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28211952/long-term-experience-with-first-generation-implantable-neurostimulation-device-in-central-sleep-apnea-treatment
#10
Henrik Fox, Thomas Bitter, Dieter Horstkotte, Olaf Oldenburg, Klaus-Jürgen Gutleben
BACKGROUND: Sleep-disordered breathing (SDB) and Cheyne-Stokes respiration (CSR) are associated with shorter survival in patients with heart failure (HF). A novel treatment method for this patient group is unilateral phrenic nerve stimulation by the remedē® system, a transvenously implantable neurostimulation device, which has recently been studied in a large randomized, controlled trial. Previous literature has shown efficacy and safety of the treatment with this first-generation device, but hardly any data is available on long-term clinical parameters, the remedē® device's battery lifetime, device exchangeability, lead position stability, surgical accessibility and manageability...
February 17, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28211797/effects-of-an-intervention-based-on-the-transtheoretical-model-on-back-muscle-endurance-physical-function-and-pain-in-rice-farmers-with-chronic-low-back-pain
#11
Thanakorn Thanawat, Nomjit Nualnetr
BACKGROUND: Chronic low back pain (LBP) can be managed by exercises which should be tailored to an individual's readiness to behavioral change. OBJECTIVE: To evaluate the effects of an intervention program based on the Transtheoretical Model of behavioral change (TTM) on back muscle endurance, physical function and pain in rice farmers with chronic LBP. METHODS: In a 32-week study, 126 rice farmers were allocated to the TTM (n= 62) and non-TTM (n= 64) groups...
February 3, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28210957/forced-treadmill-exercise-prevents-spatial-memory-deficits-in-aged-rats-probably-through-the-activation-of-na-k-atpase-in-the-hippocampus
#12
Cláudia Vanzella, Eduardo Farias Sanches, Felipe Kawa Odorcyk, Fabrício Nicola, Janaína Kolling, Aline Longoni, Tiago Marcon Dos Santos, Angela Terezinha de Souza Wyse, Carlos Alexandre Netto
Regular physical activity has shown to improve the quality of life and to prevent age-related memory deficits. Memory processing requires proper regulation of several enzymes such as sodium-potassium adenosine triphosphatase (Na(+), K(+)-ATPase) and acetylcholinesterase (AChE), which have a pivotal role in neuronal transmission. The present study investigated the effects of a treadmill running protocol in young (3 months), mature (6 months) and aged (22 months) Wistar rats, on: (a) cognitive function, as assessed in the Water maze spatial tasks; (b) Na(+), K(+)-ATPase and AChE activities in the hippocampus following cognitive training alone or treadmill running combined with cognitive training...
February 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28210048/effect-of-a-pelvic-wedge-and-belt-on-the-medial-and-lateral-hamstring-muscles-during-knee-flexion
#13
Won-Gyu Yoo
[Purpose] This study developed a pelvic wedge and belt and investigated their effects on the selective activation of medial and lateral hamstring muscles during knee flexion. [Subjects and Methods] Nine adults were enrolled. The participants performed exercises without and with the pelvic wedge and belt, and the electromyographic activities of the medial and lateral hamstring muscles were recorded. [Results] The activity of the medial hamstring was increased significantly when using the pelvic wedge and belt, while the activity of the lateral hamstring did not differ significantly...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28210046/effects-of-diaphragm-breathing-exercise-and-feedback-breathing-exercise-on-pulmonary-function-in-healthy-adults
#14
Min-Sik Yong, Hae-Yong Lee, Yun-Seob Lee
[Purpose] The present study investigated effects of diaphragm breathing exercise and feedback breathing exercise on respiratory function. [Subjects and Methods] Thirty-one subjects were randomly assigned to two groups; the feedback breathing exercise group and the maneuver-diaphragm exercise group. The feedback breathing exercise group was asked to breathe with feedback breathing device, and the maneuver-diaphragm exercise group was asked to perform diaphragm respiration. Respiratory function was evaluated when a subject sat on a chair comfortably...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28210043/repeated-3-minute-stair-climbing-descending-exercise-after-a-meal-over-2-weeks-increases-serum-1-5-anhydroglucitol-levels-in-people-with-type-2-diabetes
#15
Hiroto Honda, Makoto Igaki, Yuki Hatanaka, Motoaki Komatsu, Shin-Ichiro Tanaka, Tetsuo Miki, Yumika Matsuki, Tetsuo Takaishi, Tatsuya Hayashi
[Purpose] The purpose of this study was to examine the hypoglycemic effect of a postprandial exercise program using brief stair climbing-descending exercise in people with type 2 diabetes. [Subjects and Methods] Seven males with uncomplicated type 2 diabetes (age 68.0 ± 3.7 years) performed two sets of stair climbing-descending exercise 60 and 120 min after each meal for the first 2 weeks but not for the following 2 weeks. Each set of exercise comprised 3-min of continuous repetition of climbing briskly to the second floor followed by slow waking down to the first floor in their home...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28210036/a-study-on-muscle-activity-and-ratio-of-the-knee-extensor-depending-on-the-types-of-squat-exercise
#16
Jeong-Il Kang, Joon-Su Park, Hyun Choi, Dae-Keun Jeong, Hye-Min Kwon, Young-Jun Moon
[Purpose] For preventing the patellofemoral pain syndrome, this study aims to suggest a proper squat method, which presents selective muscle activity of Vastus Medialis Oblique and muscle activity ratios of Vastus Medialis Oblique/Vastus Lateralis by applying squat that is a representative weight bearing exercise method in various ways depending on the surface conditions and knee bending angles. [Subjects and Methods] An isometric squat that was accompanied by hip adduction, depending on the surface condition and the knee joint flexion angle, was performed by 24 healthy students...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28210034/a-comparison-of-the-shoulder-and-trunk-muscle-activity-according-to-the-various-resistance-condition-during-push-up-plus-in-four-point-kneeling
#17
Jung-Bin Kim, Chang-Kyo Yun, Myoung-Hyo Lee
[Purpose] This study was to compare the shoulder and trunk muscle activity according to the various resistance condition during knee push-up-plus. [Subjects and Methods] Twenty healthy adults participated in this study (9 males and 11 females). The subjects performed dominant-leg-extended knee push-up-plus apply to resistance in the direction of abduction, adduction, extension and the flexion. The surface Electromyography activities of the upper trapezius, serratus anterior, homolateral external oblique and the heterolateral internal oblique were measured...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28210031/effects-of-exercise-therapy-during-dialysis-for-elderly-patients-undergoing-maintenance-dialysis
#18
Yusuke Chigira, Takahiro Oda, Masataka Izumi, Tukasa Yoshimura
[Purpose] Exercise therapy during dialysis is currently being recommended since it is easy for patients to follow and results in high participation rates. In this study, this therapy was performed for elderly patients undergoing maintenance dialysis, and its effects were examined. [Subjects and Methods] Seven elderly patients (age: 70.6 ± 4.4) with chronic renal failure, who were able to perform exercises during maintenance dialysis, received the exercise therapy 2 or 3 times weekly for 3 months. Lower-limb muscle strength as well as the standardized dialysis dose (Kt/V) was measured before and after intervention...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28210030/changes-in-postural-strategy-during-exercise-against-perturbation-using-the-balance-exercise-assist-robot-a-pilot-study
#19
Norihide Itoh, Shigeo Tanabe, Satoshi Hirano, Eiichi Saitoh, Jumpei Kawabata, Daisuke Imoto, Yasuo Mikami, Toshikazu Kubo
[Purpose] To clarify the changes in postural strategy by evaluating leg joint motion and muscle activity before and after continuous exercise against perturbation using the Balance Exercise Assist Robot (BEAR). [Subjects and Methods] Nine healthy subjects (male 7, female 2; mean age 23 ± 1 years) performed a postural perturbation coping exercise only. In the task, the robot leaned and moved automatically. Participants were instructed to maintain their default upright position and they performed the exercise five times in a row (1 minute/trial)...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28209896/hawkmoths-use-nectar-sugar-to-reduce-oxidative-damage-from-flight
#20
E Levin, G Lopez-Martinez, B Fane, G Davidowitz
Nectar-feeding animals have among the highest recorded metabolic rates. High aerobic performance is linked to oxidative damage in muscles. Antioxidants in nectar are scarce to nonexistent. We propose that nectarivores use nectar sugar to mitigate the oxidative damage caused by the muscular demands of flight. We found that sugar-fed moths had lower oxidative damage to their flight muscle membranes than unfed moths. Using respirometry coupled with δ(13)C analyses, we showed that moths generate antioxidant potential by shunting nectar glucose to the pentose phosphate pathway (PPP), resulting in a reduction in oxidative damage to the flight muscles...
February 17, 2017: Science
keyword
keyword
18056
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"