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Journals Medicine and Science in Sports...

Medicine and Science in Sports and Exercise

https://read.qxmd.com/read/38480490/effect-of-platelet-rich-plasma-dosing-for-healing-after-arthroscopic-cuff-repair-compared-to-surgery-alone-a-systematic-review-and-meta-analysis
#1
JOURNAL ARTICLE
Bernardo Nunes, Ricardo Martins, Daniela Linhares, Luís Azevedo, Raphäel Canadas, Manuel Gutierres
INTRODUCTION: Platelet-rich plasma (PRP) has been used for arthroscopic rotator cuff repairs (aRCR), but no studies have addressed the impact of platelet concentration. The primary aim was to evaluate whether the PRP cell concentration has an effect on tendon healing after aRCR compared to surgery alone. The secondary aim was to assess the functional and pain outcomes. MATERIALS AND METHODS: A systematic review was performed with searches in the MEDLINE (PubMed), Scopus, Web of Science and Cochrane (Central) databases according to Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines...
March 14, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38480503/capillary-red-cell-transit-time-is-still-an-unlikely-contributor-to-exercise-induced-pulmonary-diffusion-limitation-response-to-hopkins-dempsey-and-strickland
#2
JOURNAL ARTICLE
Gerald S Zavorsky
No abstract text is available yet for this article.
March 13, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38465870/the-dynamics-of-locomotor-neuromuscular-fatigue-during-ramp-incremental-cycling-to-intolerance
#3
JOURNAL ARTICLE
Molly M Baldwin, Matthew R Chadwick, Alan P Benson, Harry B Rossiter, Carrie Ferguson
INTRODUCTION: Traditional neuromuscular fatigue assessments are not task-specific and are unable to characterize neuromuscular performance decline during dynamic whole-body exercise. This study used interleaved maximal isokinetic cycling efforts to characterize the dynamics of the decline in neuromuscular performance during ramp-incremental (RI) cycle ergometry exercise to intolerance. METHODS: Eleven young healthy participants (10 male/1 female) performed two RI cycle ergometry exercise tests to intolerance: [1] RI-exercise with peak isokinetic power (Piso) at 80 rev·min-1 measured at baseline and immediately at intolerance from a maximal ~6 s effort; [2] RI-exercise where additional Piso measurements were interleaved every 90 s to characterize the decline in neuromuscular performance during the RI-test...
March 11, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38451737/physiological-and-metabolic-responses-to-low-volume-sprint-interval-exercises-influence-of-sprint-duration-and-repetitions
#4
JOURNAL ARTICLE
Takaki Yamagishi, Soya Iwata, Shun Otsuka, Hoshizora Ichinose, Yasuo Kawakami
PURPOSE: This study aimed to determine physiological and metabolic responses to two different sprint interval exercises (SIE) matched for total sprint duration and sprint-to-rest ratio. METHODS: After having measured peak oxygen uptake (V̇O2peak), fourteen healthy males (27.1 ± 4.8 years, 169.6 ± 6.0 cm, 64.5 ± 8.4 kg, V̇O2peak: 47.2 ± 7.7 ml·kg-1·min-1) performed four 10-s sprints with 80-s recovery (SIE10) and two 20-s sprints with 160-s recovery (SIE20) on different occasions in a counterbalanced crossover manner...
March 7, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38451742/physical-activity-and-public-health-for-adults-is-the-glass-mostly-empty-or-half-full
#5
JOURNAL ARTICLE
Charles E Matthews, Pedro F Saint-Maurice, David Berrigan
Early observations that only a small proportion of United States (US) adults were engaging in enough aerobic physical activity to provide substantial health benefit helped shape our public health messaging for physical activity. This messaging has consistently indicated that most adults should increase their activity levels. However, it has been difficult to accurately estimate the proportion of adults who engage in sufficient levels of aerobic activity in the population, with survey-based estimates ranging from 22% in 1994 to 54% in 2018 and widely differing estimates from device-based measures...
March 5, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38451739/determinants-of-change-in-physical-activity-in-children-during-the-transition-from-elementary-to-high-school
#6
JOURNAL ARTICLE
Russell R Pate, Marsha Dowda, Rod K Dishman, Ruth P Saunders, Kerry L Cordan, Emily R Shull, Agnes G Bucko, Natalie Colabianchi
INTRODUCTION: Effective public health interventions targeting factors that influence physical activity are urgently needed to reduce the age-related decline in physical activity in youth. The purpose of this study was to identify associations between physical activity and a set of potential influences on physical activity in children as they transition from elementary to high school. METHODS: Participants were 951 children from South Carolina school districts who completed outcome and independent variable measures on at least two time points from the 5th through 11th grades in 2010 - 2017...
March 5, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38451696/cross-education-effects-of-isokinetic-eccentric-plantarflexor-training-on-flexibility-strength-and-muscle-tendon-mechanics
#7
JOURNAL ARTICLE
Anthony D Kay, Anthony J Blazevich, Jessica C Tysoe, Brett A Baxter
INTRODUCTION: Large increases in joint range of motion (ROM) have been reported after eccentric resistance training, however limited data exist describing the associated mechanisms or potential cross-education effects in the contralateral limb. Therefore, the effects of a 6-week isokinetic eccentric plantarflexor training program were examined in 26 participants. METHODS: Before and after the training program, dorsiflexion ROM, plantarflexor strength, and muscle-tendon unit (MTU) morphology and mechanics were measured in control (n = 13) and experimental (n = 13) young adult groups...
March 5, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38415991/longitudinal-associations-between-24-h-movement-behaviors-and-cardiometabolic-biomarkers-a-natural-experiment-over-retirement
#8
JOURNAL ARTICLE
Kristin Suorsa, Tuija Leskinen, Nidhi Gupta, Lars L Andersen, Jesse Pasanen, Pasan Hettiarachchi, Peter J Johansson, Jaana Pentti, Jussi Vahtera, Sari Stenholm
INTRODUCTION: Physical activity, sedentary behavior and sleep, that is, 24-h movement behaviors, often change in the transition from work to retirement, which may affect cardiometabolic health. This study investigates the longitudinal associations between changes in 24-h movement behaviors and cardiometabolic biomarkers during the retirement transition. METHODS: Retiring public sector workers (n = 212, mean age 63.5 years, SD 1.1) from the Finnish Retirement and Aging study used a thigh-worn Axivity accelerometer and filled out a diary to obtain data on daily time spent in sedentary behavior (SED), light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA) and sleep before and after retirement (one year in-between)...
February 29, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38415773/accelerated-fear-extinction-by-regular-light-intensity-exercise-a-possible-role-of-hippocampal-bdnf-trkb-signaling-erratum
#9
JOURNAL ARTICLE
(no author information available yet)
No abstract text is available yet for this article.
February 29, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38306315/blood-test-based-age-acceleration-is-inversely-associated-with-high-volume-sports-activity
#10
JOURNAL ARTICLE
Vencel Juhász, Anna Ország, Dorottya Balla, Liliána Szabó, Nóra Sydó, Orsolya Kiss, Emese Csulak, Máté Babity, Zsófia Dohy, Réka Skoda, Dávid Becker, Béla Merkely, András Benczúr, Hajnalka Vágó, Csaba Kerepesi
PURPOSE: We develop blood test-based aging clocks and examine how these clocks reflect high-volume sports activity. METHODS: We use blood tests and body metrics data of 421 Hungarian athletes and 283 age-matched controls (mean age 24.1 and 23.9 years, respectively), the latter selected from a group of healthy Caucasians of the National Health and Nutrition Examination Survey (NHANES) to represent the general population (n = 11,412). We train two age prediction models (i...
February 29, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38376993/early-life-androgen-administration-attenuates-aging-related-declines-in-muscle-protein-synthesis
#11
JOURNAL ARTICLE
David D Church, Amit Zamir, Guillermo Escalante, Tavor Ben-Zeev, Chagai Levi, Arny A Ferrando, Jay R Hoffman
PURPOSE: This study examined the acute and long-term effects of nandrolone decanoate (ND) on fractional synthetic rates (FSR). METHODS: Male C57BL/6 mice were randomized into ND (n = 20) or sham (n = 20) groups. ND injections (10 g·kg-1·wk-1) started at 7-month of ages and continued for 6-weeks. Ten animals from each group were randomly separated and examined 1-week following drug cessation. The remaining animals were examined at 16-months of age. Animals were injected IP with 1...
February 16, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38377171/effects-of-cognitive-and-physical-load-of-acute-exercise-on-inhibitory-control-and-prefrontal-cortex-hemodynamics-in-children
#12
JOURNAL ARTICLE
Sebastian Ludyga, Markus Gerber, Anja Schwarz, Antonella Greco, Tabea Müller, Uwe Pühse, Manuel Hanke
INTRODUCTION: Evidence suggests that acute exercise benefits inhibitory control, but it remains unclear how physical and cognitive load influence this ability in preadolescent children, when faced with different types of distractors. We examined their moderating effects along with changes in prefrontal cortex hemodynamics. METHODS: Using a cross-over design, 29 participants completed 10 min of exercise (with an interactive training wall) at 1) low physical and low cognitive load, 2) low physical and high cognitive load, 3) high physical and low cognitive load, and 4) high physical and high cognitive load in a randomized order...
February 12, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38377013/effect-of-running-speed-on-knee-biomechanics-in-collegiate-athletes-following-anterior-cruciate-ligament-reconstruction
#13
JOURNAL ARTICLE
Keith A Knurr, Daniel G Cobian, Stephanie A Kliethermes, Mikel R Joachim, Bryan C Heiderscheit
INTRODUCTION: Athletes post-anterior cruciate ligament reconstruction (ACLR) demonstrate altered surgical knee running kinematics and kinetics compared to the non-surgical limb and healthy controls. The effect of running speed on biomechanics has not been formally assessed in athletes post-ACLR. The purpose of this study was to characterize how knee biomechanics change with running speed between 3.5-7 (EARLY) and 8-13 (LATE) months post-ACLR. METHODS: Fifty-five Division I collegiate athletes post-ACLR completed running analyses (EARLY: n = 40, LATE: n = 41, both: n = 26) at 2...
February 12, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38377012/development-and-calibration-of-a-patch-device-for-monitoring-children-s-heart-rate-and-acceleration
#14
JOURNAL ARTICLE
Bridget Armstrong, R Glenn Weaver, Jonas McAninch, Michal T Smith, Hannah Parker, Abbi D Lane, Yuan Wang, Russ Pate, Mafruda Rahman, David Matolak, M V S Chandrashekhar
INTRODUCTION: Current wearables that collect heart rate and acceleration were not designed for children and/or do not allow access to raw signals, making them fundamentally unverifiable. This study describes the creation and calibration of an open-source multichannel platform (PATCH) designed to measure heart rate and acceleration in children ages 3-8 years. METHODS: Children (N = 63; Mean age = 6.3) participated in a 45-minute protocol ranging in intensities from sedentary to vigorous activity...
February 12, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38377009/estimating-maturity-status-in-elite-youth-soccer-players-evaluation-of-methods
#15
JOURNAL ARTICLE
Xabier Monasterio, Susana M Gil, Iraia Bidaurrazaga-Letona, Sean P Cumming, Robert M Malina, Sean Williams, Jose A Lekue, Juan Santisteban, Gontzal Diaz-Beitia, Jon Larruskain
PURPOSE: To evaluate the concordance of predicted maturity status classifications (pre-, circa- or post-peak height velocity) relative to observed age at PHV in youth soccer players. METHODS: Longitudinal height records for 124 male soccer players were extracted from academy records spanning the 2000-2022 seasons. Age at PHV for each player was estimated with the Super-Imposition by Translation and Rotation (SITAR) model. Players were classified as pre-, circa- or post-PHV using both ±1 year and ± 0...
February 12, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38377006/acute-resistance-exercise-modifies-extracellular-vesicle-mirnas-targeting-anabolic-gene-pathways-a-prospective-cohort-study
#16
JOURNAL ARTICLE
William R Conkright, Chris K Kargl, Monica J Hubal, Dakota R Tiede, Meaghan E Beckner, Adam J Sterczala, Kellen T Krajewski, Brian J Martin, Shawn D Flanagan, Julie P Greeves, Thomas J O'Leary, Sophie L Wardle, Amrita Sahu, Fabrisia Ambrosio, Bradley C Nindl
BACKGROUND: Resistance training confers numerous health benefits that are mediated in part by circulating factors. Towards an enhanced molecular understanding, there is growing interest in a class of signaling biomarkers called extracellular vesicles (EVs). Extracellular vesicles support physiological adaptations to exercise by transporting their cargo (e.g., microRNA [miRNA]) to target cells. Previous studies of changes in EV cargo have focused on aerobic exercise, with limited data examining the effects of resistance exercise...
February 12, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38376998/heart-rate-variability-thresholds-agreement-with-established-approaches-and-reproducibility-in-trained-females-and-males
#17
JOURNAL ARTICLE
Pablo R Fleitas-Paniagua, Gabriele Marinari, Letizia Rasica, Bruce Rogers, Juan M Murias
PURPOSE: To determine in trained females and males: i) the agreement between the gas exchange threshold (GET), lactate threshold 1 (LT1) and heart rate variability threshold 1 (HRVT1), as well as between the respiratory compensation point (RCP), lactate threshold 2 (LT2) and heart rate variability threshold 2 (HRVT2) and ii) the reproducibility of HRVT1 and HRVT2 during two-min incremental step protocols. METHODS: Fifty-seven trained participants (24 females) completed a 2 min step incremental test to task failure...
February 12, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38376997/the-influence-of-super-shoes-and-foot-strike-pattern-on-metabolic-cost-and-joint-mechanics-in-competitive-female-runners
#18
JOURNAL ARTICLE
Eduardo Martinez, Wouter Hoogkamer, Douglas W Powell, Max R Paquette
PURPOSE: To assess the influence of "super-shoes" on metabolic cost and joint mechanics in competitive female runners, and to understand how foot strike pattern may influence the footwear effects. METHODS: Eighteen competitive female runners ran four 5-minute bouts on a force instrumented treadmill at 12.9 km·h-1 in: 1) Nike Vaporfly Next% 2TM (SUPER) and 2) Nike Pegasus 38TM (CON) in a randomized and mirrored order. RESULTS: Metabolic power was improved by 4...
February 8, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38376995/heavy-severe-and-extreme-but-not-moderate-intensity-exercise-increase-v%C3%AC-o2max-and-thresholds-after-6-weeks-of-training
#19
JOURNAL ARTICLE
Erin Calaine Inglis, Danilo Iannetta, Letizia Rasica, Mary Z Mackie, Daniel A Keir, Martin J MacInnis, Juan M Murias
INTRODUCTION: This study assessed the effect of individualized, domain-based exercise intensity prescription on changes in maximal oxygen uptake (V̇O2max) and submaximal thresholds. METHODS: Eighty-four young healthy participants (42 Females, 42 Males) were randomly assigned to six age, sex, and V̇O2max-matched groups (14 participants each). Groups performed continuous cycling in the 1) moderate (MOD)-, 2) lower heavy (HVY1)-, and 3) upper heavy-intensity (HVY2)- domain; interval cycling, in the form of 4) high-intensity interval training (HIIT) in the severe-intensity domain, or 5) sprint-interval training (SIT) in the extreme-intensity domain; or no exercise for, 6) control (CON)...
February 5, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38350462/sports-bra-restriction-on-respiratory-mechanics-during-exercise
#20
JOURNAL ARTICLE
Shalaya Kipp, Michael G Leahy, A William Sheel
PURPOSE: We set out to understand how underband tightness or pressure of a sports bra relates to respiratory function and the mechanical work of breathing ( during exercise. Our secondary purpose was to quantify the effects of underband pressure on O2 during submaximal running. METHODS: Nine highly trained, female runners with normal pulmonary function completed maximal and submaximal running in three levels of underband restriction: loose, self-selected, and tight...
February 5, 2024: Medicine and Science in Sports and Exercise
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