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https://www.readbyqxmd.com/read/28900568/can-runners-perceive-changes-in-heel-cushioning-as-the-shoe-ages-with-increased-mileage
#1
Mark W Cornwall, Thomas G McPoil
BACKGROUND: For those runners who utilize footwear and have a rearfoot strike pattern, the durability of the midsole heel region has been shown to deteriorate as shoe mileage increases. PURPOSE: The purpose of this study was threefold: 1) to determine if the runner can self-report changes in heel cushioning properties of the midsole after an extended period of distance running, 2) to determine if force and plantar pressures measured in the heel region of the midsole using a capacitance sensor insole change after running 640 km, and 3) to determine if a durometer could be used clinically to objectively measure changes in the hardness of the material in the heel region of the midsole...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28891824/low-fodmap-a-preliminary-strategy-to-reduce-gastrointestinal-distress-in-athletes
#2
Dana M Lis, Trent Stellingwerff, Cecilia M Kitic, James W Fell, Kiran D K Ahuja
INTRODUCTION: Gastrointestinal (GI) distress in endurance athletes is prevalent and detrimental to performance. Adverse GI symptomatology can be analogous with irritable bowel syndrome, where fermentable oligosaccharide, disaccharide, monosaccharide and polyols (FODMAP) reduction has demonstrated efficacy. This study investigated the effects of low FODMAP (LFOD) diet on GI distress parameters in runners with a history of non-clinical exercise-associated GI symptoms. METHODS: Eleven recreationally competitive runners (5 males, 6 females; 5km personal best 23:00±4:02 min:sec) participated in the study...
September 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28828386/time-evolution-of-sublingual-microcirculatory-changes-in-recreational-marathon-runners
#3
Andrius Pranskunas, Justina Arstikyte, Zivile Pranskuniene, Jurga Bernatoniene, Inga Kiudulaite, Egle Vaitkaitiene, Dinas Vaitkaitis, Marius Brazaitis
We aimed to evaluate changes in sublingual microcirculation induced by a marathon race. Thirteen healthy male controls and 13 male marathon runners volunteered for the study. We performed sublingual microcirculation, using a Cytocam-IDF device (Braedius Medical, Huizen, Netherlands), and systemic hemodynamic measurements four times: 24 hours prior to their participation in the Kaunas Marathon (distance: 41.2 km), directly after finishing the marathon, 24 hours after the marathon, and one week after the marathon...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28802455/from-control-to-causation-validating-a-complex-systems-model-of-running-related-injury-development-and-prevention
#4
A Hulme, P M Salmon, R O Nielsen, G J M Read, C F Finch
INTRODUCTION: There is a need for an ecological and complex systems approach for better understanding the development and prevention of running-related injury (RRI). In a previous article, we proposed a prototype model of the Australian recreational distance running system which was based on the Systems Theoretic Accident Mapping and Processes (STAMP) method. That model included the influence of political, organisational, managerial, and sociocultural determinants alongside individual-level factors in relation to RRI development...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28775185/frequency-of-exercise-induced-st-t-segment-deviations-and-cardiac-arrhythmias-in-recreational-endurance-athletes-during-a-marathon-race-results-of-the-prospective-observational-berlin-beat-of-running-study
#5
Juliane Herm, Agnieszka Töpper, Alexander Wutzler, Claudia Kunze, Matthias Krüll, Lars Brechtel, Jürgen Lock, Jochen B Fiebach, Peter U Heuschmann, Wilhelm Haverkamp, Matthias Endres, Gerhard Jan Jungehulsing, Karl Georg Haeusler
OBJECTIVES: While regular physical exercise has many health benefits, strenuous physical exercise may have a negative impact on cardiac function. The 'Berlin Beat of Running' study focused on feasibility and diagnostic value of continuous ECG monitoring in recreational endurance athletes during a marathon race. We hypothesised that cardiac arrhythmias and especially atrial fibrillation are frequently found in a cohort of recreational endurance athletes. The main secondary hypothesis was that pathological laboratory findings in these athletes are (in part) associated with cardiac arrhythmias...
August 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/28772336/the-effect-of-clinical-pilates-on-functional-movement-in-recreational-runners
#6
Anna Laws, Sean Williams, Cassie Wilson
Biomechanical imbalances and inefficient functional movements are considered contributing factors to running-related injuries. Clinical Pilates uses a series of exercises focused on retraining normal movement patterns. This study investigated whether a 6-week course of Clinical Pilates improves functional movement and thereby, potentially, reduces the risk of running-related injuries associated with movement dysfunction. A modified functional movement screen was used to analyze the functional movement ability of forty runners...
September 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28767525/comparison-of-lower-limb-and-back-exercises-for-runners-with-chronic-low-back-pain
#7
Congcong Cai, Yifan Yang, Pui W Kong
INTRODUCTION: This single-blind randomized trial was conducted to compare the treatment effect of lower limb (LL) exercises versus conventional lumbar extensor (LE) and lumbar stabilization (LS) exercises in recreational runners with chronic low back pain (cLBP), since there is currently no specific protocol for managing runners with cLBP. METHODS: 84 recreational runners with cLBP were allocated to three exercise groups (LL, LE, LS) for an 8-week intervention. Outcome measures included self-rated pain and running capability, lower limb strength, back muscles function, and running gait...
July 31, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28751372/energy-cost-of-running-instability-evaluated-with-wearable-trunk-accelerometry
#8
Kurt Heinrich Schütte, Saint Sackey, Rachel Venter, Benedicte Vanwanseele
Maintaining stability under dynamic conditions is an inherent challenge to bipedal running. This challenge may impose an energetic cost (Ec) thus hampering endurance running performance, yet the underlying mechanisms are not clear. Wireless tri-axial trunk accelerometry is a simple tool that could be used to unobtrusively evaluate these mechanisms. Here, we test a cost of instability hypothesis by examining the contribution of trunk accelerometry-based measures (tri-axial root mean square, step and stride regularity, and sample entropy) to inter-individual variance in Ec (kcal...
July 27, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28744226/the-mucosal-immune-function-is-not-compromised-during-a-period-of-high-intensity-interval-training-is-it-time-to-reconsider-an-old-assumption
#9
Dennis-Peter Born, Christoph Zinner, Billy Sperlich
Purpose: The aim of the study was to evaluate the mucosal immune function and circadian variation of salivary cortisol, Immunoglobin-A (sIgA) secretion rate and mood during a period of high-intensity interval training (HIIT) compared to long-slow distance training (LSD). Methods: Recreational male runners (n = 28) completed nine sessions of either HIIT or LSD within 3 weeks. The HIIT involved 4 × 4 min of running at 90-95% of maximum heart rate interspersed with 3 min of active recovery while the LSD comprised of continuous running at 70-75% of maximum heart rate for 60-80 min...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28732074/who-uses-running-apps-and-sports-watches-determinants-and-consumer-profiles-of-event-runners-usage-of-running-related-smartphone-applications-and-sports-watches
#10
Mark Janssen, Jeroen Scheerder, Erik Thibaut, Aarnout Brombacher, Steven Vos
Individual and unorganized sports with a health-related focus, such as recreational running, have grown extensively in the last decade. Consistent with this development, there has been an exponential increase in the availability and use of electronic monitoring devices such as smartphone applications (apps) and sports watches. These electronic devices could provide support and monitoring for unorganized runners, who have no access to professional trainers and coaches. The purpose of this paper is to gain insight into the characteristics of event runners who use running-related apps and sports watches...
2017: PloS One
https://www.readbyqxmd.com/read/28690018/adaptations-of-lumbar-biomechanics-after-four-weeks-of-running-training-with-minimalist-footwear-and-technique-guidance-implications-for-running-related-lower-back-pain
#11
Szu-Ping Lee, Joshua P Bailey, Jo Armour Smith, Stephanie Barton, David Brown, Talia Joyce
OBJECTIVES: To investigate the changes in lumbar kinematic and paraspinal muscle activation before, during, and after a 4-week minimalist running training. DESIGN: Prospective cohort study. SETTING: University research laboratory. PARTICIPANTS: Seventeen habitually shod recreational runners who run 10-50 km per week. MAIN OUTCOME MEASURES: During stance phases of running, sagittal lumbar kinematics was recorded using an electrogoniometer, and activities of the lumbar paraspinal muscles were assessed by electromyography...
December 2, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28682935/muscle-activity-and-physiological-responses-during-running-in-water-and-on-dry-land-at-submaximal-and-maximal-efforts
#12
Kenji Masumoto, Kyle C Mefferd, Riley Iyo, John A Mercer
We investigated muscle activity, oxygen uptake, heart rate, and rating of perceived exertion during running in water and on dry land at submaximal and maximal efforts. Eleven recreational runners performed deep water running (DWR) and treadmill running (TMR) graded exercise tests on separate days. On the third test day, the participants exercised at their 60%, 80%, and 100% of maximal oxygen uptake (VO2max) by matching specific stride frequencies or running speeds. VO2max, maximal heart rate (HRmax), and rating of perceived exertion at maximal effort (RPEmax) were measured...
July 3, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28678622/carbohydrate-mouth-rinse-does-not-affect-performance-during-a-60-min-running-race-in-women
#13
Costas Chryssanthopoulos, Christos Ziaras, Tanja Oosthuyse, Ioannis Lambropoulos, Paradisis Giorgios P, Elias Zacharogiannis, Anastassios Philippou, Maria Maridaki
This study examined the effect of carbohydrate mouth rinsing on endurance running performance in women. Fifteen female recreational endurance runners, who used no oral contraceptives, ran two races of 1-h duration on an indoor track (216-m length) at 18:00 h after an 8-h fast with a 7-days interval between races, corresponding to the 3(rd)-10th day of each premenopausal runner's menstrual cycle, or any day for the postmenopausal runners. In a double-blind random order, participants rinsed their mouth with 25 ml of either a 6...
July 5, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28661204/user-survey-of-3-ankle-braces-in-soccer-volleyball-and-running-which-brace-fits-best
#14
Kasper Janssen, Anjulie Van Den Berg, Willem Van Mechelen, Evert Verhagen
CONTEXT:   Recurrence rates for ankle sprains are high. Therefore, preventive measures such as ankle bracing during sports are recommended. OBJECTIVE:   To systematically evaluate the perceived ease of use, quality, comfort, stability, and hindrance of and the overall satisfaction with 3 contemporary brace types in 3 types of sports. DESIGN:   Randomized comparative user survey. SETTING:   Recreational sports: soccer, volleyball, and running...
August 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28611674/is-marathon-training-harder-than-the-ironman-training-an-eco-method-comparison
#15
Jonathan Esteve-Lanao, Diego Moreno-Pérez, Claudia A Cardona, Eneko Larumbe-Zabala, Iker Muñoz, Sergio Sellés, Roberto Cejuela
Purpose: To compare the absolute and relative training load of the Marathon (42k) and the Ironman (IM) training in recreational trained athletes. Methods: Fifteen Marathoners and Fifteen Triathletes participated in the study. Their performance level was the same relative to the sex's absolute winner at the race. No differences were presented neither in age, nor in body weight, height, BMI, running VO2max max, or endurance training experience (p > 0.05). They all trained systematically for their respective event (IM or 42k)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28581678/ttn-genotype-is-associated-with-fascicle-length-and-marathon-running-performance
#16
Georgina K Stebbings, Alun G Williams, Adam J Herbert, Sarah J Lockey, Shane M Heffernan, Robert M Erskine, Christopher I Morse, Stephen H Day
Titin provides a molecular blueprint for muscle sarcomere assembly and sarcomere length can vary according to titin isoform expression. If variations in sarcomere length influence muscle fascicle length, this may provide an advantage for running performance. Thus the aim of this study was to investigate if the titin (TTN) rs10497520 polymorphism was associated with muscle fascicle length in recreationally active men (RA; n = 137) and marathon personal best time in male marathon runners (MR; n = 141). Fascicle length of the vastus lateralis was assessed in vivo using B-mode ultrasonography at 50% of muscle length in RA...
June 5, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28575753/foot-muscle-morphology-is-related-to-center-of-pressure-sway-and-control-mechanisms-during-single-leg-standing
#17
Xianyi Zhang, Kurt Heinrich Schütte, Benedicte Vanwanseele
Maintaining balance is vitally important in everyday life. Investigating the effects of individual foot muscle morphology on balance may provide insights into neuromuscular balance control mechanisms. This study aimed to examine the correlation between the morphology of foot muscles and balance performance during single-leg standing. Twenty-eight recreational runners were recruited in this study. An ultrasound device was used to measure the thickness and cross-sectional area of three intrinsic foot muscles (abductor hallucis, flexor digitorum brevis and quadratus plantae) and peroneus muscles...
May 25, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28558847/ultrasound-characteristics-of-the-mid-portion-of-the-achilles-tendon-in-runners-a-systematic-review-protocol
#18
Prue Molyneux, Matthew Carroll, Sarah Stewart, Angela Brenton-Rule, Keith Rome
BACKGROUND: Achilles tendinopathy is one of the most common overuse injuries in recreational and competitive runners, yet the clinical significance and frequency of abnormal sonographic characteristics in runners remains unclear. This paper presents a protocol for a systematic review which aims to assess existing literature which has employed ultrasonography to evaluate characteristics of the mid-portion of the Achilles tendon in runners. METHODS: An electronic literature search will be conducted using the following electronic databases: MEDLINE, CINAHL and SPORTDiscus...
May 30, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28543791/the-association-between-eccentric-hip-abduction-strength-and-hip-and-knee-angular-movements-in-recreational-male-runners-an-explorative-study
#19
R B K Brund, S Rasmussen, R O Nielsen, U G Kersting, U Laessoe, M Voigt
Weak hip abductors may be related with increased hip adduction and knee abduction angular movement, which may be risk factors of lower extremity injuries. As the role of eccentric hip abduction strength (EHAS) on hip adduction angular movement and knee abduction angular movement (KABD) remains unclear, the purpose of this study was to explore the association between EHAS and hip and knee angular movement. In 100 healthy male recreational runners, EHAS was quantified using an isokinetic dynamometer, while hip and knee angular movements were collected using pressure-sensitive treadmill and Codamotion active marker system...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28515696/the-reliability-and-validity-of-a-four-minute-running-time-trial-in-assessing-formula-see-text-max-and-performance
#20
Kerry McGawley
Introduction: Traditional graded-exercise tests to volitional exhaustion (GXTs) are limited by the need to establish starting workloads, stage durations, and step increments. Short-duration time-trials (TTs) may be easier to implement and more ecologically valid in terms of real-world athletic events. The purpose of the current study was to assess the reliability and validity of maximal oxygen uptake ([Formula: see text]max) and performance measured during a traditional GXT (STEP) and a four-minute running time-trial (RunTT)...
2017: Frontiers in Physiology
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