Search Results - "Spence, John C"

Impact of the COVID-19 virus outbreak on movement and play behaviours of Canadian children and youth: a national survey by Moore, Sarah A, Faulkner, Guy, Rhodes, Ryan E, Brussoni, Mariana, Chulak-Bozzer, Tala, Ferguson, Leah J, Mitra, Raktim, O'Reilly, Norm, Spence, John C, Vanderloo, Leigh M, Tremblay, Mark S

“…Healthy childhood development is fostered through sufficient physical activity (PA; including time outdoors), limiting sedentary behaviours (SB), and adequate…”
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Systematic review of the relationships between physical activity and health indicators in the early years (0-4 years) by Carson, Valerie, Lee, Eun-Young, Hewitt, Lyndel, Jennings, Cally, Hunter, Stephen, Kuzik, Nicholas, Stearns, Jodie A, Unrau, Stephanie Powley, Poitras, Veronica J, Gray, Casey, Adamo, Kristi B, Janssen, Ian, Okely, Anthony D, Spence, John C, Timmons, Brian W, Sampson, Margaret, Tremblay, Mark S

“…Given the rapid development during the early years (0-4 years), an understanding of the health implications of physical activity is needed. The purpose of this…”
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Time-resolved serial crystallography captures high-resolution intermediates of photoactive yellow protein by Tenboer, Jason, Basu, Shibom, Zatsepin, Nadia, Pande, Kanupriya, Milathianaki, Despina, Frank, Matthias, Hunter, Mark, Boutet, Sébastien, Williams, Garth J., Koglin, Jason E., Oberthuer, Dominik, Heymann, Michael, Kupitz, Christopher, Conrad, Chelsie, Coe, Jesse, Roy-Chowdhury, Shatabdi, Weierstall, Uwe, James, Daniel, Wang, Dingjie, Grant, Thomas, Barty, Anton, Yefanov, Oleksandr, Scales, Jennifer, Gati, Cornelius, Seuring, Carolin, Srajer, Vukica, Henning, Robert, Schwander, Peter, Fromme, Raimund, Ourmazd, Abbas, Moffat, Keith, Van Thor, Jasper J., Spence, John C. H., Fromme, Petra, Chapman, Henry N., Schmidt, Marius

“…Serial femtosecond crystallography using ultrashort pulses from x-ray free electron lasers (XFELs) enables studies of the light-triggered dynamics of…”
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Inversion of Many-Beam Bragg Intensities for Phasing by Iterated Projections: Removal of Multiple Scattering Artifacts from Diffraction Data by Donatelli, Jeffrey J., Spence, John C. H.

“…An iterated projection algorithm (N-Phaser) is developed that reconstructs a scattering potential from N-beam multiple Bragg scattered intensities. The method…”
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Canadian 24-Hour Movement Guidelines for the Early Years (0-4 years): An Integration of Physical Activity, Sedentary Behaviour, and Sleep by Tremblay, Mark S, Chaput, Jean-Philippe, Adamo, Kristi B, Aubert, Salomé, Barnes, Joel D, Choquette, Louise, Duggan, Mary, Faulkner, Guy, Goldfield, Gary S, Gray, Casey E, Gruber, Reut, Janson, Katherine, Janssen, Ian, Janssen, Xanne, Jaramillo Garcia, Alejandra, Kuzik, Nicholas, LeBlanc, Claire, MacLean, Joanna, Okely, Anthony D, Poitras, Veronica J, Rayner, Mary-Ellen, Reilly, John J, Sampson, Margaret, Spence, John C, Timmons, Brian W, Carson, Valerie

“…The Canadian Society for Exercise Physiology convened representatives of national organizations, research experts, methodologists, stakeholders, and end-users…”
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Movement behaviours and physical, cognitive, and social-emotional development in preschool-aged children: Cross-sectional associations using compositional analyses by Kuzik, Nicholas, Naylor, Patti-Jean, Spence, John C, Carson, Valerie

“…Background Movement behaviours (e.g., sleep, sedentary behaviour, and physical activity) in isolation have demonstrated benefits to preschool-aged children's…”
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Systematic review of physical activity and cognitive development in early childhood by Carson, Valerie, Hunter, Stephen, Kuzik, Nicholas, Wiebe, Sandra A, Spence, John C, Friedman, Alinda, Tremblay, Mark S, Slater, Linda, Hinkley, Trina

“…Abstract Objectives To comprehensively review all observational and experimental studies examining the relationship between physical activity and cognitive…”
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A step-defined sedentary lifestyle index: <5000 steps/day by Tudor-Locke, Catrine, Craig, Cora L, Thyfault, John P, Spence, John C

“…Step counting (using pedometers or accelerometers) is widely accepted by researchers, practitioners, and the general public. Given the mounting evidence of the…”
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The effect of neighborhood walkability on changes in physical activity and sedentary behavior during a 12-week pedometer-facilitated intervention by McCormack, Gavin R, Spence, John C, McHugh, Tara-Leigh, Mummery, W Kerry

“…Pedometer-facilitated interventions encourage physical activity via the accumulation of steps. Mixed evidence suggests that neighborhood walkability might…”
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Meta-analysis of internet-delivered interventions to increase physical activity levels by Davies, Cally A, Spence, John C, Vandelanotte, Corneel, Caperchione, Cristina M, Mummery, W Kerry

“…Many internet-delivered physical activity behaviour change programs have been developed and evaluated. However, further evidence is required to ascertain the…”
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Outrunning damage: Electrons vs X-rays—timescales and mechanisms by Spence, John C. H.

“…Toward the end of his career, Zewail developed strong interest in fast electron spectroscopy and imaging, a field to which he made important contributions…”
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How many steps/day are enough? for children and adolescents by Tudor-Locke, Catrine, Craig, Cora L, Beets, Michael W, Belton, Sarahjane, Cardon, Greet M, Duncan, Scott, Hatano, Yoshiro, Lubans, David R, Olds, Timothy S, Raustorp, Anders, Rowe, David A, Spence, John C, Tanaka, Shigeho, Blair, Steven N

“…Worldwide, public health physical activity guidelines include special emphasis on populations of children (typically 6-11 years) and adolescents (typically…”
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How many steps/day are enough? For adults by Tudor-Locke, Catrine, Craig, Cora L, Brown, Wendy J, Clemes, Stacy A, De Cocker, Katrien, Giles-Corti, Billie, Hatano, Yoshiro, Inoue, Shigeru, Matsudo, Sandra M, Mutrie, Nanette, Oppert, Jean-Michel, Rowe, David A, Schmidt, Michael D, Schofield, Grant M, Spence, John C, Teixeira, Pedro J, Tully, Mark A, Blair, Steven N

“…Physical activity guidelines from around the world are typically expressed in terms of frequency, duration, and intensity parameters. Objective monitoring…”
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Parental support of the Canadian 24-hour movement guidelines for children and youth: prevalence and correlates by Rhodes, Ryan E, Spence, John C, Berry, Tanya, Faulkner, Guy, Latimer-Cheung, Amy E, O'Reilly, Norman, Tremblay, Mark S, Vanderloo, Leigh

“…To explore the prevalence of parental support for meeting the Canadian 24-Hour Movement Guidelines for Children and Youth, identify key interactive support…”
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Associations between objectively-measured and self-reported neighbourhood walkability on adherence and steps during an internet-delivered pedometer intervention by Consoli, Anna, Nettel-Aguirre, Alberto, Spence, John C, McHugh, Tara-Leigh, Mummery, Kerry, McCormack, Gavin R

“…Accumulating evidence suggests that the built environment is associated with physical activity. The extent to which the built environment may support adherence…”
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Physical activity, screen time and dietary behaviours in New Zealand adolescents prior to and following the onset of the COVID-19 pandemic by Mandic, Sandra, Khan, Asaduzzaman, García Bengoechea, Enrique, Coppell, Kirsten J, Spence, John C, Smith, Melody

“…Insufficient physical activity, high screen time, and unhealthy dietary patterns among adolescents may have worsened during the pandemic, but data are lacking…”
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Challenging the Dual-Hinge Approach to Intervening on Sedentary Behavior by Spence, John C., PhD, Rhodes, Ryan E., PhD, Carson, Valerie, PhD

“…The recent recognition that sedentary behavior (SB) is distinct from physical activity (PA), both in terms of determinants and health impact, is perhaps one of…”
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Meeting new Canadian 24-Hour Movement Guidelines for the Early Years and associations with adiposity among toddlers living in Edmonton, Canada by Lee, Eun-Young, Hesketh, Kylie D, Hunter, Stephen, Kuzik, Nicholas, Rhodes, Ryan E, Rinaldi, Christina M, Spence, John C, Carson, Valerie

“…Canada has recently released guidelines that include toddler-specific recommendations for physical activity, screen-based sedentary behaviour, and sleep. This…”
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Femtosecond nanocrystallography using X-ray lasers for membrane protein structure determination by Fromme, Petra, Spence, John CH

“…► Femtosecond nanocrystallography is based on Free Electron X-ray Lasers ► The diffract-before-destroy principle overcomes damage problem in crystallography ►…”
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The relationship between transport-to-school habits and physical activity in a sample of New Zealand adolescents by Kek, Chiew Ching, García Bengoechea, Enrique, Spence, John C., Mandic, Sandra

“…•Nearly one-half of active transport users met physical activity recommendations.•Only one-third of adolescents relying on motorized transport met the…”
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