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Effect of a Customized Physical Activity Promotion Program on Visceral Fat and Glycemic Parameters in Individuals With Prediabetes: A Randomized Controlled Trial

Radhika A. Jadhav, G. Arun Maiya, Shashikiran Umakanth, and K.N. Shivashankara

Background: Physical activity of any amount results in substantial health benefits. However, public awareness of physical activity benefits in chronic diseases is inadequate in India. Prediabetes is a significant health issue on a global scale. Visceral fat (VF) is considered as an early predictor of prediabetes. Ethnicity and race have a substantial impact on VF. Hence, this study intended to evaluate the effect of a customized physical activity promotion program on VF and glycemic parameters in individuals with prediabetes. Methods: In the current, parallel group randomized controlled trial, a total of 158 participants were recruited: 79 in intervention and 79 in control group. The study included the prediabetes individuals based on American Diabetes Association criteria. Participants from the intervention group received the customized physical activity promotion program for 24 weeks. The primary outcome measures of the study were VF level and glycemic parameters that included fasting blood sugar and glycosylated hemoglobin. Two-way mixed analysis of variance was used to study the mean difference of an outcome between 2 groups over time. Results: The study found a statistically significant interaction between the intervention and times on VF level, F 1,136 = 23.564, fasting blood sugar levels, F 1,136 = 8.762, and glycosylated hemoglobin levels, F 1,136 = 64.582 at the end of 24 weeks (P < .05). Conclusions: This study concluded that a customized physical activity promotion program was effective in reducing VF in individuals with prediabetes as compared with controls. It improved glycemic control by reducing fasting blood sugar and glycosylated hemoglobin levels.

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Understanding Physical Behaviors During Periods of Accelerometer Wear and Nonwear in College Students

Alexander H.K. Montoye, Kimberly A. Clevenger, Benjamin D. Boudreaux, and Michael D. Schmidt

Accelerometers are increasingly used to measure 24-hr movement behaviors but are sometimes removed intermittently (e.g., for sleep or bathing), resulting in missing data. This study compared physical behaviors between times a hip-placed accelerometer was worn versus not worn in a college student sample. Participants (n = 115) wore a hip-placed ActiGraph during waking times and a thigh-placed activPAL continuously for at least 7 days (mean ± SD 7.5 ± 1.1 days). Thirteen nonwear algorithms determined ActiGraph nonwear; days included in the analysis had to have at least 1 min where the ActiGraph classified nonwear while participant was classified as awake by the activPAL. activPAL data for steps, time in sedentary behaviors (SB), light-intensity physical activity (LPA), and moderate- to vigorous-intensity physical activity (MVPA) from ActiGraph wear times were then compared with activPAL data from ActiGraph nonwear times. Participants took more steps (10.2–11.8 steps/min) and had higher proportions of MVPA (5.0%–5.9%) during ActiGraph wear time than nonwear time (3.1–8.0 steps/min, 0.8%–1.3% in MVPA). Effects were variable for SB (62.6%–66.9% of wear, 45.5%–76.2% of nonwear) and LPA (28.2%–31.5% of wear, 23.0%–53.2% of nonwear) depending on nonwear algorithm. Rescaling to a 12-hr day reduced SB and LPA error but increased MVPA error. Requiring minimum wear time (e.g., 600 min/day) reduced error but resulted in 10%–22% of days removed as invalid. In conclusion, missing data had minimal effect on MVPA but resulted in underestimation of SB and LPA. Strategies like scaling SB and LPA, but not MVPA, may improve physical behavior estimates from incomplete accelerometer data.

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An xG of Their Own: Using Expected Goals to Explore the Analytical Shortcomings of Misapplied Gender Schemas in Football

Sachin Narayanan and N. David Pifer

Although professional women’s football has benefitted from recent surges in popularity, challenges to progress and distinguish the sport persist. The gender-schema theory explains the tendency for individuals to hold female sports to male standards, a phenomenon that leads to negative outcomes in areas such as media representation and consumer perception. One area in which schemas have a more discreet effect is player and team performance, where the assumption that technical metrics developed in men’s football are transferable to women’s football remains unfounded. Using expected goals, a metric synonymous with the probability of a shot being scored, we highlight how variables important to shot quality and shot execution differ across gender, and how attempts to evaluate female footballers with models built on men’s data increase estimation errors. These results have theoretical and practical implications for the role they play in reframing schemas and improving the methods used to evaluate performance in women’s sports.

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“What Have I Learned . . . ” and How Did I Get There? Reflection on a Research Journey

Marijke Taks

Receiving a lifetime award allows one to pause and reflect on one’s research journey. In the spirit of Earle Zeigler himself, I reflect on: “What I have learned . . . ” on my research journey, and more specifically on how I got there. My research has always focused on the interaction between sport, economics, and society and evolved: “From socio-economic impacts on sport participation to socio-economic outcomes of sport events.” To cover 40 years of research, I am highlighting how: (a) “triggers,” (b) “influencers,” and (c) “lessons learned” intermingled to push my research agenda forward. This reflection proved to be a very gratifying exercise. I can highly recommend it to all researchers. Perhaps, this can become a stepping stone to be promoted to the rank of Prof. Emeritus or Emerita. Either way, sharing our experiences may trigger, inspire, and advance the learning of future generations of sport management scholars.

Open access

The Psychometric Properties of Two Brief Measures of Teamwork in Sport

Desmond McEwan, Eesha J. Shah, Kaitlin L. Crawford, Patricia C. Jackman, Matt D. Hoffmann, Ethan Cardinal, Mark W. Bruner, Colin D. McLaren, and Alex J. Benson

In the current study, the structural and external validity of data derived from two shorter versions of the Multidimensional Assessment of Teamwork in Sport (MATS) were examined using multilevel analyses. Evidence of model–data fit was shown for both a 5-factor model comprising 19 items (with subscales assessing teamwork preparation, execution, evaluation, adjustments, and management of team maintenance) and a single-factor model comprising five items (providing a global estimate of teamwork). In general, data from both versions were positively and significantly correlated with (and distinct from) athletes’ perceptions of team cohesion, collective efficacy, performance satisfaction, enjoyment in their sport, and commitment to their team and their coaches’ transformational leadership. The measures appear well suited to detect between-teams differences, as evidenced by intraclass correlation coefficients and acceptable reliability estimates of team-level scores. In summary, the 19-item Multidimensional Assessment of Teamwork in Sport-Short and five-item Multidimensional Assessment of Teamwork in Sport-Global provide conceptually and psychometrically sound questionnaires to briefly measure teamwork in sport.

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Erratum. Are Preference and Tolerance Measured With the PRETIE-Q (Preference for and Tolerance of the Intensity of Exercise Questionaire) Relevant Constructs for Understanding Exercise Intensity in Physical Activity? A Scoping Review

Kinesiology Review

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Dynamic Lower Limb Alignment During Jumping in Preschool Children: Normative Profiles and Sex Differences

Steen Harsted, Lise Hestbæk, Anders Holsgaard-Larsen, and Henrik Hein Lauridsen

The natural development of static lower limb varus/valgus alignments during early childhood is well understood. However, our understanding of dynamic lower limb frontal plane alignments is limited, and we lack normative descriptions of this phenomenon for both boys and girls. This study investigated dynamic lower limb alignment during jump-landings in preschool children, focusing on associations with sex, age, and motor performance. Dynamic lower limb alignment was measured as the Knee-to-Ankle Separation Ratio (KASR) in 605 children aged 3–6 years using markerless motion capture. Based on KASR measurements, we categorized the children into three kinematic groups: Valgus, Intermediate, and Varus. Median KASR scores were 0.86 (0.80–0.96) overall, 0.89 (0.81–0.98) for boys, and 0.85 (0.78–0.92) for girls. Over 75% of the children exhibited some level of dynamic knee valgus during jump-landings (KASR < 1). However, roughly two-thirds of the children in the Valgus group were girls. Age-adjusted differences in motor performance were small and only statistically significant for jump height and length in girls. These findings suggest that dynamic knee valgus during jump-landings is a common occurrence in preschool children, especially among girls. The potential relationship between dynamic lower limb alignment and age and motor performance warrants further investigation.

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Inequalities in Leisure-Time Physical Activity and Television Viewing According to Age Among a Brazilian Adult Population

Andrea Wendt, Adriana K.F. Machado, Bruna G.C. da Silva, Caroline S. Costa, Luiza I.C. Ricardo, and Shana Ginar da Silva

Background: The present study aims to estimate leisure-time physical activity and television (TV) viewing curves according to age stratified by sex, area of residence, and socioeconomic position. Methods: Using data from the Brazilian National Health Survey, we estimated the prevalence of leisure-time physical activity and TV viewing according to continuous age. The estimates were calculated using fractional polynomials and stratified by sex, wealth, skin color, and area of residence. Results: The sample included 87,376 adults (aged 18 y or over). In general, leisure-time physical activity decreased according to age while TV viewing increased. Regarding behavior of curves according to stratifiers, for leisure-time physical activity the disadvantaged groups maintained a pattern of low physical activity across all age groups or presented the decrease earlier when compared to groups in social advantage. On the other hand, for TV viewing, women presented an increase in prevalence before men, and individuals living in the urban area and the wealthiest group were those with a higher increase according to age. Conclusions: Our findings may help researchers and policymakers further explore inequalities in physical activity across life in different settings, as well as develop sensitive cultural actions to support more vulnerable people to adopt public health recommendations.

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“Post or Perish”? An Early Career Researcher’s Guide to Using Social Media

Emma S. Cowley, Kelly McNulty, Ciaran M. Fairman, and Lee Stoner

Social media usage has soared in the last decade, with the majority of adults having an account on at least one platform. Sites such as LinkedIn, X, and TikTok allow users to share content using different forms, for example, written or video, long form or short form. Social media can be used by researchers to forge collaborations, rapidly disseminate new research, and demonstrate societal impact. This opinion piece aims to highlight the value of social media, in particular for early career researchers, and offer suggestions on how early career researchers can strategically use social media to build a network and an online presence. We reflect on our own experiences of social media and include some of the reasons we have been deterred from it in the past, such as fear of making a mistake, being misunderstood, or painted as being an overconfident “know it all.” As the demonstration of impact and engagement becomes ever more important in grant applications and job security, social media competency is a powerful professional skill that will be important for all scientists.

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Charting a Course: Navigating Rigor and Meaning in Global Health Research

Tiago Canelas, Motlatso Godongwana, Feyisayo A. Wayas, Estelle Victoria Lambert, Yves Wasnyo, and Louise Foley

In the rapidly evolving landscape of global health research, the tension between scientific rigor and contextual meaning presents a critical challenge. Drawing on our work with the Global Diet and Physical Activity Network, this commentary explores the complexities of conducting environmental audits for physical activity and diet in 4 rapidly urbanizing African cities: Yaoundé, Lagos, Cape Town, and Soweto. We illustrate the competing demands and tensions that researchers face in balancing rigor and meaning. We discuss the adaptation of internationally validated audit tools to local contexts and the importance of area-level deprivation in interpreting data. We also examine the feasibility of virtual assessment tools, emphasizing the value of local expertise. We argue for a balanced approach that marries research rigor with contextual meaning, advocating for transparency, humility, and meaningful community engagement.