metatarsophalangeal joint stiffness during shod walking and jogging to provide a greater understanding of foot stiffness during these tasks. It was hypothesized that differences in ankle and metatarsophalangeal joint stiffness exist during shod walking and jogging. Methods Participants A total of 27 healthy subjects
Fabian Mager, Jim Richards, Malika Hennies, Eugen Dötzel, Ambreen Chohan, Alex Mbuli and Felix Capanni
Bonnie G. Berger and Erika Friedman
Jogging and other relaxation techniques help some people reduce psychological stress. Little is known, however, about the benefits for people who do not personally select the particular activity, or about comparable effectiveness. We compared the stress reduction benefits of jogging, Benson's relaxation response, group interaction, and a control group in a nonclinical population. College students (iV=387) were randomly assigned to treatment. After completing the Profile of Mood States (POMS), a demographic inventory, and a measure of social desirability, students practiced a stress reduction activity for 12 weeks. They completed the POMS before and after group meetings at monthly intervals. Jogging and the relaxation response helped students reduce short-term stress significantly more than did group support (p<.04). Students in all three techniques reported significantly greater short-term reductions in stress than did the controls (p<.03). Given that there were no long-term benefits, participants need to practice their activities regularly if they want continued benefits.
John L. Walker, Tinker D. Murray, Charles M. Johnson, Don L. Rainey and William G. Squires Jr.
This study evaluated the aerobic demands of the 20-minute steady-state jogging speeds for 15 high school students. All subjects performed a discontinuous treadmill test that included submaximal speeds, the Fit Youth Today criterion referenced speeds, and finally a run to voluntary fatigue. Stages lasted 5 minutes. Preliminary data indicated that both groups averaged between 87% (the 9 boys) and 93 % (the 6 girls) of their respective peak oxygen consumption at the criterion referenced speeds during treadmill testing. According to the American College of Sports Medicine guidelines for healthy adults, these intensities represent the upper threshold for aerobic conditioning, and high exercise intensities can increase the risk of injury. Although the results of this study are preliminary in nature and based on a small sample size, we suggest that the criterion referenced distances (speeds) for the FYT 20-minute steady-state jog may need modification.
Peter M. Hopsicker and Douglas Hochstetler
In this paper, we ethically examine the value of dichotomies to the endurance community or any sports community bifurcated by attitudes of superiority in one qualitative method of experiencing an activity over another—as Pearl Izumi's 2007 advertising campaign “We are not joggers” has done by dividing the bipedal ambulatory endurance community into “runners” and “joggers.” Using the writings of American pragmatists William James and John Dewey, we will describe the endurance sports community in terms of “unsympathetic characters” and “sympathetic characters.” We will then layer conceptions of the “static” self and the “dynamic” self on top of this dichotomy. The results of this examination will not support Pearl Izumi's dichotomy in “static” ways. However, if these perspectives are viewed as exemplifying a temporal measure of the “dynamic” self, as part of the endurance athletes' personal narratives, then actions and attitudes based on these dichotomies can be seen as part of meaningful personal and community growth as well as a potential source of virtue.
Stuart L. Smith
A figurational framework is employed to analyze aspects of the phenomenon of mass nonelite road running in Britain. More particularly, the paper explores the dynamics of identifiable participant-groups in a sport where, formally, all are in competition with all. The analysis of data derived, primarily from a series of interviews with a range of participants in Britain, indicates that there are three identifiable participant-groups involved in the sport. A distinction between “athletes” and others—a distinction between winners and losers—is widely recognized outside road running circles, but one between “runners” and “joggers” is not. This lack of general recognition gives rise to a tension between these groups, more acutely felt on the part of the runners, as they are faced with having to defend what they see as an important status difference.
Brian R. Hunt, James D. George, Pat R. Vehrs, A. Garth Fisher and Gilbert W. Fellingham
The purpose of this study was to validate the ability of the 1-mile jog test to predict VO2max in fit teenagers. Forty-one males and 42 females performed the steady-state, submaximal jogging test on an indoor track, along with a maximal graded exercise test (GXT) on a treadmill. Open circuit calorimetry was used during the GXT to measure maximal oxygen consumption (VO2max). We generated the following age-specific prediction equation applicable to boys and girls 13–17 years old (n = 83, Radj = .88, SEE = 3.26 ml · kg−1 · min−1): VO2max = 92.91 + 6.50 × gender (0 = female, 1 = male) − 0.141 × body mass (kg) − 1.562 × jog time (min) − 0.125 × heart rate (bpm). Cross-validation results were acceptable (SEEpress = 3.44 ml · kg−1 · min−1). As a field test, the submaximal 1-mile jogging test may alleviate problems associated with pacing, motivation, discouragement, injury, and fatigue that are sometimes associated with maximal effort timed or distance run tests.
John H. Challis
This study examined the influence of force plate targeting, via stride length adjustments, on the magnitude and consistency of ground reaction force and segment angle profiles of the stance phase of human running. Seven male subjects (height, 1.77 m ± 0.081; mass, 72.4 kg ± 7.52; age range, 23 to 32 years) were asked to run at a mean velocity of 3.2 m · s–1 under three conditions (normal, short, and long strides). Four trials were completed for each condition. For each trial, the ground reaction forces were measured and the orientations of the foot, shank, and thigh computed. There were no statistically significant differences (p > .05) between the coefficients of variation of ground reaction force and segment angle profiles under the three conditions, so these profiles were produced consistently. Peak active vertical ground reaction forces, their timings, and segment angles at foot off were not significantly different across conditions. In contrast, significant differences between conditions were found for peak vertical impact forces and their timings, and for the three lower limb segment angles at the start of force plate contact. These results have implications for human gait studies, which require subjects to target the force plate. Targeting may be acceptable depending on the variables to be analyzed.
Ben Desbrow, Katelyn Barnes, Caroline Young, Greg R. Cox and Chris Irwin
Immediate postexercise access to fruit/fluid via a recovery “station” is a common feature of mass participation sporting events. Yet little evidence exists examining their impact on subsequent dietary intake. The aim of this study was to determine if access to fruit/water/sports drinks within a recovery station significantly alters dietary and fluid intakes in the immediate postexercise period and influences hydration status the next morning. 127 (79 males) healthy participants (M ± SD, age = 22.5 ± 3.5y, body mass (BM) = 73 ± 13kg) completed two self-paced morning 10km runs separated by 1 week. Immediately following the first run, participants were randomly assigned to enter (or not) the recovery station for 30min. All participants completed the alternate recovery option the following week. Participants recorded BM before and after exercise and measured Urine Specific Gravity (USG) before running and again the following morning. For both trial days, participants also completed 24h food and fluid records via a food diary that included photographs. Paired-sample t tests were used to assess differences in hydration and dietary outcome variables (Recovery vs. No Recovery). No difference in preexercise USG or BM change from exercise were observed between treatments (p’s > .05). Attending the recovery zone resulted in a greater total daily fluid (Recovery = 3.37 ± 1.46L, No Recovery = 3.16 ± 1.32L, p = .009) and fruit intake (Recovery = 2.37 ± 1.76 servings, No Recovery = 1.55 ± 1.61 servings, p > .001), but had no influence on daily total energy (Recovery = 10.15 ± 4.2MJ, No Recovery = 10.15 ± 3.9MJ), or macronutrient intakes (p > .05). Next morning USG values were not different between treatments (Recovery = 1.018 ± 0.007, No Recovery = 1.019 ± 0.009, p > .05). Recovery stations provide an opportunity to modify dietary intake which promote positive lifestyle behaviors in recreational athletes.
Andrew M. Johnson, Philip A. Vernon, Quincy J. Almeida, Linda L. Grantier and Mandar S. Jog
The effect of a precue on improving movement initiation (i.e., reaction time; RT) is well understood, whereas its influence on movement execution (i.e., movement time; MT) has rarely been examined. The current study investigated the influence of a directional precue (i.e., left vs. right) on the RT and MT of simple and discrete bi-directional movements in a large sample of Parkinson's disease patients and healthy control participants. Both patients and controls were tested twice, with testing sessions separated by 2 hours. Patients were tested first following an overnight levodopa withdrawal and again after they had taken their medication. Both patients and controls demonstrated a significant RT improvement when information was provided in advance. MT in both healthy participants and medicated patients was, however, slower with the provision of advance information, while unmedicated patients showed no significant MT effects. These results suggest that while the basal ganglia may not be involved in motor program selection, they may dynamically modulate movement execution.
Rebekah Lynn, Rebekah Pfitzer, Rebecca R. Rogers, Christopher G. Ballmann, Tyler D. Williams and Mallory R. Marshall
musculoskeletal impairment. Additionally, individuals had to be able to perform various walking and jogging tasks at the speeds (3.0 mph [4.8 km/hr] and 6.5 mph [10.5 km/h], respectively) chosen for this study. This study was approved by the Samford University Institutional Review Board. All participants provided