30 min of treadmill walking at self-selected speed does not increase gait variability in independent elderly.

abstract：:The GT3X+ worn at the wrist promotes greater compliance than at the hip. Minutes in SB and PA calculated from raw accelerations at the hip and wrist provide contrasting estimates and cannot be directly compared. Wear-time for the wrist (15.6 to 17.4 h.d-1) was greater than the hip (15.2 to 16.8 h.d-1) across several w...

journal_title：Journal of sports sciences

authors： McLellan G,Arthur R,Buchan DS

更新日期：2018-11-01 00:00:00

abstract：:High Intensity Interval Training (HIIT) may be effective for accumulating VPA. However, the contribution of HIIT to overall physical activity is unknown. Our primary aim was to explore the impact of school-based HIIT on physical activity. The secondary aim was to explore within-individual changes in physical activity ...

journal_title：Journal of sports sciences

authors： Costigan SA,Ridgers ND,Eather N,Plotnikoff RC,Harris N,Lubans DR

更新日期：2018-05-01 00:00:00

abstract：:This study aims to assess fundamental movement skill (FMS) proficiency, physical self-confidence levels, and the relationship between these variables and gender differences among adolescents. Three hundred and ninety five adolescents aged 13.78 years (SD = ±1.2) from 20 schools were involved in this study. The Test of...

journal_title：Journal of sports sciences

authors： McGrane B,Belton S,Powell D,Issartel J

更新日期：2017-09-01 00:00:00

abstract：:The aim of this study was to examine the effect of concentric warm-up exercise on eccentrically induced changes in muscle strength, range of motion, and soreness of the elbow flexors. Ten resistance-exercise naive participants performed intermittent incremental eccentric actions (42 in total) of the elbow flexor muscl...

journal_title：Journal of sports sciences

authors： Ingham SA,van Someren KA,Howatson G

更新日期：2010-11-01 00:00:00

abstract：:In this study, we examined patterns of leg muscle recruitment and co-activation, and the relationship between muscle recruitment and cadence, in highly trained cyclists. Electromyographic (EMG) activity of the tibialis anterior, tibialis posterior, peroneus longus, gastrocnemius lateralis and soleus was recorded using...

journal_title：Journal of sports sciences

authors： Chapman AR,Vicenzino B,Blanch P,Knox JJ,Hodges PW

更新日期：2006-02-01 00:00:00

abstract：:The aims of this study were to examine the effect of different environmental constraints on kinematic multi-segment coordination patterns during the service and its coordination with service time variability. Ten expert tennis players (Age: 34.1 ± 5.3) volunteered to take part in this study. Participants served 30 tim...

journal_title：Journal of sports sciences

authors： Shafizadeh M,Bonner S,Fraser J,Barnes A

更新日期：2019-05-01 00:00:00

abstract：:Despite recent popularity of wrist-worn accelerometers for assessing free-living physical behaviours, there is a lack of user-friendly methods to characterize physical activity from a wrist-worn ActiGraph accelerometer. Participants in this study completed a laboratory protocol and/or 3-8 hours of directly observed fr...

journal_title：Journal of sports sciences

authors： Montoye AHK,Clevenger KA,Pfeiffer KA,Nelson MB,Bock JM,Imboden MT,Kaminsky LA

更新日期：2020-11-01 00:00:00

abstract：:The purpose of this study was to examine the influence of a carbohydrate-rich meal on post-prandial metabolic responses and skeletal muscle glycogen concentration. After an overnight fast, eight male recreational/club endurance runners ingested a carbohydrate (CHO) meal (2.5 g CHO x kg(-1) body mass) and biopsies were...

journal_title：Journal of sports sciences

authors： Chryssanthopoulos C,Williams C,Nowitz A,Bogdanis G

更新日期：2004-11-01 00:00:00

abstract：:The purpose was to evaluate the traditional method, of visually focusing on the ball, in comparison to focusing on the hole, during the putting stroke. The study design consisted of a pretest, a 4-week practice period, and a posttest. Participants (n = 31, handicap: 18.7 ± 10.4) practised using only one of the two gaz...

journal_title：Journal of sports sciences

authors： Mackenzie SJ,Foley SM,Adamczyk AP

更新日期：2011-09-01 00:00:00

abstract：:We investigated whether heart rate (HR)-derived parameters are accurate performance predictors in endurance recreational runners. One hundred thirty recreational athletes completed an incremental running test (4´running + 1´rest). After each stage, we recorded HR, % of maximum HR (%HRmax), and blood lactate. We also a...

journal_title：Journal of sports sciences

authors： Etxegarai U,Insunza A,Larruskain J,Santos-Concejero J,Gil SM,Portillo E,Irazusta J

更新日期：2018-09-01 00:00:00

abstract：:The aim of this study was to determine whether 3 weeks of intermittent normobaric hypoxic exposure at rest was able to elicit changes that would benefit multi-sport athletes. Twenty-two multi-sport athletes of mixed ability were exposed to either a normobaric hypoxic gas (intermittent hypoxic training group) or a plac...

journal_title：Journal of sports sciences

authors： Hamlin MJ,Hellemans J

更新日期：2007-02-15 00:00:00

abstract：:Interceptive actions require individuals to time their movements with an external event. To meet the intense spatial-temporal demands needed for successful interception, a tight coupling and coordination between perceptual and motor processes is required. The control strategy that underlies successful performance is a...

journal_title：Journal of sports sciences

authors： Panchuk D,Vickers JN

更新日期：2009-10-01 00:00:00

abstract：:Blood flow changes in response to exercise have been attributed, among other factors, to the effect of vasodilators factors on the microvasculature, suggesting a close relationship between small blood vessels and conducting arteries. The main purpose of this study was to determine the relationship between the changes ...

journal_title：Journal of sports sciences

authors： Alvares TS,Oliveira GV,Soares R,Murias JM

更新日期：2020-04-01 00:00:00

abstract：:Parkour landing techniques differ from performances of other sports as they are practiced in urban spaces with uncontrolled surfaces and drop heights. Due to the relatively young age of the sport, few studies have tried to understand how practitioners - called traceurs - succeed at performing these dynamic performance...

journal_title：Journal of sports sciences

authors： Maldonado G,Soueres P,Watier B

更新日期：2018-11-01 00:00:00

abstract：:Low back pain (LBP) is a common problem in football (soccer) players. The effect of LBP on the trunk and hip muscles in this group is unknown. The relationship between LBP and trunk muscle size and function in football players across the preseason was examined. A secondary aim was to assess hip muscle strength. Twenty...

journal_title：Journal of sports sciences

authors： Hides JA,Oostenbroek T,Franettovich Smith MM,Mendis MD

更新日期：2016-12-01 00:00:00

abstract：:The aim of this study was to determine the variations in substrate utilization between men and women matched for ventilatory threshold (Tvent) during incremental arm cranking and leg cycling exercise at 70, 85, 100 and 115% of the mode-specific Tvent. Recreationally active men (n=12) and women (n=10) with similar valu...

journal_title：Journal of sports sciences

authors： Yasuda N,Ruby BC,Gaskill SE

更新日期：2006-12-01 00:00:00

abstract：:The purpose of this study was to compare the maximal exercise performance during cycle ergometry of 34 men and 47 women. External peak power output (OPP) and optimized pedalling rate (ORPM) were calculated from data gathered during an optimization procedure performed on a friction braked cycle ergometer. In addition, ...

journal_title：Journal of sports sciences

authors： Winter EM,Brookes FB,Hamley EJ

更新日期：1991-04-01 00:00:00

abstract：:This study aimed to investigate deprivation and sex differences in selected health-relatedfitness measures in 9-12-year-old children. Data were captured on 3,407 children (49.3% boys; aged 10.5 ± 0.6 years). Cardiorespiratory fitness(20 m multistage shuttle run test; 20 m MSRT), muscular strength (handgrip strength) a...

journal_title：Journal of sports sciences

authors： Tyler R,Mackintosh KA,Spacey HL,Stratton G

更新日期：2020-01-01 00:00:00

abstract：:Concerns about the value of physical testing and apparently declining test performance in junior basketball players prompted this retrospective study of trends in anthropometric and fitness test scores related to recruitment age and recruitment year. The participants were 1011 females and 1087 males entering Basketbal...

journal_title：Journal of sports sciences

authors： Drinkwater EJ,Hopkins WG,McKenna MJ,Hunt PH,Pyne DB

更新日期：2007-06-01 00:00:00

abstract：:The purpose of this study was to establish normative data for regional sweat sodium concentration ([Na+]) and whole-body sweating rate in athletes. Data from 506 athletes (367 adults, 139 youth; 404 male, 102 female) were compiled from observational athlete testing for a retrospective analysis. The participants were s...

journal_title：Journal of sports sciences

authors： Baker LB,Barnes KA,Anderson ML,Passe DH,Stofan JR

更新日期：2016-01-01 00:00:00

abstract：:The purpose of this paper was to systematically review the literature and examine the research methodological quality, measurement properties and feasibility of the Loughborough Soccer Passing Test (LSPT). Databases were searched up to June 2017. Twenty five studies fulfilled the eligibility criteria. The main methodo...

journal_title：Journal of sports sciences

authors： Wen D,Robertson S,Hu G,Song B,Chen H

更新日期：2018-08-01 00:00:00

abstract：:The inflammatory responsive cytokine interleukin-6 (IL-6) helps regulate immune responses to exercise. Evidence suggests that increases in IL-6 are related to exercise duration and intensity. However, the moderating effect of sex and underlying mediators have received limited attention. We compared plasma IL-6 respons...

journal_title：Journal of sports sciences

authors： Edwards KM,Burns VE,Ring C,Carroll D

更新日期：2006-08-01 00:00:00

abstract：:Walking is a safe, accessible and low cost activity, amenable to change and known to have great potential to increase physical activity levels in sedentary individuals. The objective of this study is to estimate the proportion of the 2009 adult population of England who would attain or exceed vigorous intensity activi...

journal_title：Journal of sports sciences

authors： Kelly P,Murphy M,Oja P,Murtagh EM,Foster C

更新日期：2011-12-01 00:00:00

abstract：:The aim of this study was to quantify movements of Super 12 rugby players in competition because information on elite rugby players' movements is unavailable. Players were categorized into forwards [front (n = 16) and back row (n = 15)] and backs [inside (n = 9) and outside backs (n = 7)] and their movements analysed ...

journal_title：Journal of sports sciences

authors： Duthie G,Pyne D,Hooper S

更新日期：2005-05-01 00:00:00

abstract：:The aim of this study was to assess the effects of nicotinamide adenine dinucleotide hydride (NADH) on maximal oxygen uptake (VO2max), maximal anaerobic running time, and mental performance. Eight men were exposed to a supplement treatment (30 mg NADH as ENACHI tablets per day) and to a placebo treatment, each of 4 we...

journal_title：Journal of sports sciences

authors： Mero A,Raitanen R,Birkmayer J,Komi P

更新日期：2008-02-01 00:00:00

abstract：:In this study, we measured the vertical and horizontal take-off forces, plantar pressures and activation patterns of four muscles (vastus lateralis, gluteus maximus, tibialis anterior, gastrocnemius) in 10 ski jumpers in simulated laboratory conditions when wearing either training shoes or ski jumping boots. We found ...

journal_title：Journal of sports sciences

authors： Virmavirta M,Komi PV

更新日期：2001-12-01 00:00:00

abstract：:This study aimed to compare the load-velocity and load-power relationships of three common variations of the squat exercise. 52 strength-trained males performed a progressive loading test up to the one-repetition maximum (1RM) in the full (F-SQ), parallel (P-SQ) and half (H-SQ) squat, conducted in random order on sepa...

journal_title：Journal of sports sciences

authors： Martínez-Cava A,Morán-Navarro R,Sánchez-Medina L,González-Badillo JJ,Pallarés JG

更新日期：2019-05-01 00:00:00

abstract：:Microsaccades are important fixation eye movements for visual scene perception. Compared to novices, athletes make fewer fixations of longer duration toward limited interest areas crucial for action prediction. Thus, our aim was to study the microsaccade features during those fixations. Gaze behaviour of expert and no...

journal_title：Journal of sports sciences

authors： Piras A,Raffi M,Perazzolo M,Malagoli Lanzoni I,Squatrito S

更新日期：2019-05-01 00:00:00

abstract：:In order to determine the role of body build characteristics in modern pentathletes, 65 female participants at the IXth World Modern Pentathlon Championships, 1989 (Wiener Neustadt, Austria) were investigated. Of these, 54 participate in the competition; the other 11 were reserves. Their mean (+/- S.D.) age was 22.34 ...

journal_title：Journal of sports sciences

authors： Claessens AL,Hlatky S,Lefevre J,Holdhaus H

更新日期：1994-08-01 00:00:00

abstract：:Research has shown that talented athletes outscore their mainstream peers on the basis of self-regulation. Although valuable, this does not tell us more about the distinction between good athletes and the best, which is a prerequisite in talent development. Therefore, we examined the self-regulatory skills of 222 male...

journal_title：Journal of sports sciences

authors： Jonker L,Elferink-Gemser MT,Visscher C

更新日期：2010-06-01 00:00:00