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Kellie Toohey, Kate L Pumpa, Leonard Arnolda, Julie Cooke, Desmond Yip, Paul S Craft, Stuart Semple
PURPOSE: The aim of this study was to evaluate the effects of low-volume high-intensity interval training and continuous low to moderate intensity training on quality of life, functional capacity and cardiovascular disease risk factors in cancer survivors. METHODS: Cancer survivors within 24 months post-diagnosis were randomly assigned into the low-volume high-intensity interval training group (n = 8) or the continuous low to moderate intensity training group (n = 8) group for 36 sessions (12 weeks) of supervised exercise...
2016: PeerJ
Nastasia Marinus, Liene Bervoets, Guy Massa, Kenneth Verboven, An Stevens, Tim Takken, Dominique Hansen
BACKGROUND: Cardiopulmonary exercise testing is advised ahead of exercise intervention in obese adolescents to assess medical safety of exercise and physical fitness. Optimal validity and reliability of test results are required to identify maximal exercise effort. As fat oxidation during exercise is disturbed in obese individuals, it remains an unresolved methodological issue whether the respiratory gas exchange ratio (RER) is a valid marker for maximal effort during exercise testing in this population...
October 20, 2016: Journal of Sports Medicine and Physical Fitness
Nigel Hardiman, Kristina Charlotte Dietz, Ian Bride, Louis Passfield
Land managers of natural areas are under pressure to balance demands for increased recreation access with protection of the natural resource. Unintended dispersal of seeds by visitors to natural areas has high potential for weedy plant invasions, with initial seed attachment an important step in the dispersal process. Although walking and mountain biking are popular nature-based recreation activities, there are few studies quantifying propensity for seed attachment and transport rate on boot soles and none for bike tires...
October 17, 2016: Environmental Management
V Rizza, L Stabile, G Buonanno, L Morawska
In the present study a mobile monitoring approach (i.e. bike with onboard instruments) was proposed and applied to investigate the spatial variability of all the key airborne particle metrics in an Italian urban area from a statistical point of view. Particle number, alveolar-deposited surface area, and PM10 concentrations were measured through hand-held monitors and compared to simultaneous background concentrations by means of non-parametric tests and further post-hoc tests (Kruskal-Wallis test). Streets characterized by exposure levels statistically higher than the background levels for all the particle metrics were identified for different seasons in a pilot urban area (Cassino, Italy)...
October 11, 2016: Environmental Pollution
Louise M Fuller, Brenda Button, Ben Tarrant, Ranjana Steward, Lisa Bennett, Greg Snell, Anne E Holland
OBJECTIVE: This study aimed to investigate the effects of a supervised longer (14 week) versus shorter duration, (7 week) rehabilitation program after lung transplantation (LTX). DESIGN: Randomised controlled trial SETTING: Post lung transplantation patients were randomised to either a shorter rehabilitation program (7 weeks) or a longer program (14 weeks) in an outpatient rehabilitation gym setting. PARTICIPANTS: Post lung transplantation patients aged 18 years or older who had undergone either single (SLTX) or bilateral lung (BSLTX) transplantation...
September 30, 2016: Archives of Physical Medicine and Rehabilitation
Mehmet Kurt, Kaveh Laksari, Calvin Kuo, Gerald A Grant, David B Camarillo
Bicycling is the leading cause of sports-related traumatic brain injury. Most of the current bike helmets are made of expanded polystyrene (EPS) foam and ultimately designed to prevent blunt trauma, e.g., skull fracture. However, these helmets have limited effectiveness in preventing brain injuries. With the availability of high-rate micro-electrical-mechanical systems sensors and high energy density batteries, a new class of helmets, i.e., expandable helmets, can sense an impending collision and expand to protect the head...
September 27, 2016: Annals of Biomedical Engineering
Jing Gu, Babak Mohit, Peter Alexander Muennig
BACKGROUND: Our objective is to evaluate the cost-effectiveness of investments in bike lanes using New York City's (NYC) fiscal year 2015 investment as a case study. We also provide a generalizable model, so that localities can estimate their return on bike lane investments. METHODS AND FINDINGS: We evaluate the cost-effectiveness of bike lane construction using a two-stage model. Our regression analysis, to estimate the marginal addition of lane miles on the expansion in bike ridership, reveals that the 45...
September 9, 2016: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
Barney Wainwright, Carlton Brian Cooke, John Paul O'Hara
The purpose of the study was to assess the validity and inter-bike reliability of 10 Wattbike cycle ergometers, and to assess the test-retest reliability of one Wattbike. Power outputs from 100 to 1000 W were applied using a motorised calibration rig (LODE) at cadences of 70, 90, 110 and 130 rev · min(-1), which created nineteen different intensities for comparison. Significant relationships (P < 0.01, r(2) = 0.99) were found between each of the Wattbikes and the LODE. Each Wattbike was found to be valid and reliable and had good inter-bike agreement...
August 23, 2016: Journal of Sports Sciences
Pablo Vera-Villarroel, Daniela Contreras, Sebastián Lillo, Christian Beyle, Ariel Segovia, Natalia Rojo, Sandra Moreno, Francisco Oyarzo
The perception of colour and its subjective effects are key issues to designing safe and enjoyable bike lanes. This paper addresses the relationship between the colours of bike lane interventions-in particular pavement painting and intersection design-and the subjective evaluation of liking, visual saliency, and perceived safety related to such an intervention. Utilising images of three real bike lane intersections modified by software to change their colour (five in total), this study recruited 538 participants to assess their perception of all fifteen colour-design combinations...
2016: PloS One
James Hu, David Ng
A 35-year-old female presented to the emergency room with severe upper leg and back pain, which began 3 days after low-intensity cycling and falling from a stationary bike. She developed rhabdomyolysis with a maximum serum creatine kinase level of 72,358 U/L. This case report demonstrates that rhabdomyolysis has a wide range and spectrum of causes and risk factors. Although uncommon, this condition can occur after low-intensity exercise despite absence of other significant risk factors. Thus, clinicians should maintain a high clinical suspicion when initial history, physical examination, and laboratory tests suggest this diagnosis...
September 2016: Journal of Clinical Medicine Research
Bhargav Dave, Asmi Dave, Nilesh Kotecha, Myrtle Oates
INTRODUCTION: The triathlon involves a combination of three separate disciplines-swimming, cycling and running. To date, very few studies have been conducted on the anthropometric characteristics of the New Zealand junior elite triathletes. The aim of this study was to determine the correlation between physical traits of calf girth or sum of eight skinfolds (anthropometry) and running or cycling performances in the triathlon event. METHODS: Eleven junior elite triathletes (6 females, 5 males; (Av...
June 2016: Electronic Physician
Jose Ignacio Priego Quesada, Pedro Pérez-Soriano, Angel Gabriel Lucas-Cuevas, Rosario Salvador Palmer, Rosa M Cibrián Ortiz de Anda
The aim of this study was to assess the influence of different bike positions on the perception of fatigue, pain and comfort. Twenty cyclists underwent three tests that involved cycling for 45 min at their individual 50% peak aerobic power output while adopting different positions on the bike. Participants performed the cycling tests adopting three positions defined by two parameters (knee flexion angle [20°, 30°, 40°] and trunk flexion angle [35°, 45°, 55°]) in random order. Angles were measured using a 2D motion analysis system during cycling and applying Fonda's correction factor...
August 4, 2016: Journal of Sports Sciences
Emily Thrun, Julien Leider, Jamie F Chriqui
BACKGROUND: In response to traditional zoning codes that contribute to car-dependent sprawling and disconnected neighborhoods, communities are reforming their land use laws to create pedestrian-friendly areas that promote physical activity. One such reform is the adoption of transit-oriented developments or districts (TODs). TODs are higher density, compact, and mixed use areas located around transit stops that are designed to encourage walking. PURPOSE: To identify the characteristics of communities that have adopted TODs in their land use laws and examine if communities that have included TODs in their zoning codes are more likely to have adults that commute by any form of active transportation (i...
2016: Frontiers in Public Health
Barbara B Brown, Ken R Smith, Doug Tharp, Carol M Werner, Calvin P Tribby, Harvey J Miller, Wyatt Jensen
BACKGROUND: Complete streets require evaluation to determine if they encourage active transportation. METHODS: Data were collected before and after a street intervention provided new light rail, bike lanes, and better sidewalks in Salt Lake City, Utah. Residents living near (<800 m) and far (≥801-2000 m) from the street were compared, with sensitivity tests for alternative definitions of near (<600 and <1000 m). Dependent variables were accelerometer/global positioning system (GPS) measures of transit trips, non-transit walking trips, and biking trips that included the complete street corridor...
June 22, 2016: Journal of Physical Activity & Health
A Zembron-Lacny, W Dziubek, M Rynkiewicz, B Morawin, M Woźniewski
Regular exercise plays an important preventive and therapeutic role in heart and vascular diseases, and beneficially affects brain function. In blood, the effects of exercise appear to be very complex and could include protection of vascular endothelial cells via neurotrophic factors and decreased oxidative stress. The purpose of this study was to identify the age-related changes in peripheral brain-derived neurotrophic factor (BDNF) and its relationship to oxidative damage and conventional cardiovascular disease (CVD) biomarkers, such as atherogenic index, C-reactive protein (hsCRP) and oxidized LDL (oxLDL), in active and inactive men...
June 20, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Hassan Mohammadi-Abdar, Angela L Ridgel, Fred M Discenzo, Kenneth A Loparo
Recent studies in rehabilitation of Parkinson's disease (PD) have shown that cycling on a tandem bike at a high pedaling rate can reduce the symptoms of the disease. In this research, a smart motorized bicycle has been designed and built for assisting Parkinson's patients with exercise to improve motor function. The exercise bike can accurately control the rider's experience at an accelerated pedaling rate while capturing real-time test data. Here, the design and development of the electronics and hardware as well as the software and control algorithms are presented...
June 2016: IEEE/ASME Transactions on Mechatronics
Elizabeth L Adams, Lesley W Vandermark, J Luke Pryor, Riana R Pryor, Rachel M VanScoy, Craig R Denegar, Robert A Huggins, Douglas J Casa
This study examined the separate and combined effects of heat acclimation and hand cooling on post-exercise cooling rates following bouts of exercise in the heat. Seventeen non-heat acclimated (NHA) males (mean ± SE; age, 23 ± 1 y; mass, 75.30 ± 2.27 kg; maximal oxygen consumption [VO2 max], 54.1 ± 1.3 ml·kg(-1)·min(-1)) completed 2 heat stress tests (HST) when NHA, then 10 days of heat acclimation, then 2 HST once heat acclimated (HA) in an environmental chamber (40°C; 40%RH). HSTs were 2 60-min bouts of treadmill exercise (45% VO2 max; 2% grade) each followed by 10 min of hand cooling (C) or no cooling (NC)...
June 8, 2016: Journal of Sports Sciences
Paulina Hebisz, Rafał Hebisz, Marek Zatoń, Bartosz Ochmann, Natalia Mielnik
PURPOSE: In this study, we compared the effects of two different training modalities on maximal oxygen uptake and work output. METHODS: Participants included 26 well-trained mountain bike cyclists were divided into two groups. The first group trained using a conventional endurance protocol at steady-state (moderate) intensity and variable-intensity (high-moderate-low) free of maximal efforts. The second group combined endurance training with a sprint and high-intensity interval training protocol, which, respectively, were based on 30 s maximal repetitions and 4 min high intensity repetitions...
August 2016: European Journal of Applied Physiology
Joerg U Schmohl, Martin Felices, Elizabeth Taras, Jeff S Miller, Daniel A Vallera
Previously, we constructed a bispecific NK-cell-engager (BiKE) bearing single-chain variable fragments (scFv) against CD16 on NK cells and EpCAM on tumor cells. This BiKE facilitated antigen-specific antibody-dependent cell-mediated cytotoxicity (ADCC) but did not induce NK cell expansion. We incorporated a modified interleukin-15 cross-linker to create a trispecific construct (TriKE) in order to improve activation, proliferation, and survival of NK cells. Synthesis and assembly of hybrid genes encoding the TriKE was accomplished using DNA-shuffling and DNA-ligation techniques...
August 2016: Molecular Therapy: the Journal of the American Society of Gene Therapy
Iván Rodríguez, Lysien Zambrano, Carlos Manterola
INTRODUCTION: Physiological parameters used to measure exercise intensity are oxygen uptake and heart rate. However, perceived exertion (PE) is a scale that has also been frequently applied. The objective of this study is to establish the criterion-related validity of PE scales in children during an incremental exercise test. METHODS: Seven electronic databases were used. Studies aimed at assessing criterion-related validity of PE scales in healthy children during an incremental exercise test were included...
April 2016: Archivos Argentinos de Pediatría
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