196,296 research outputs found
Performance analysis in field hockey goalkeeping during penalty corners: a case study.
No full textAbstract
BACKGROUND:
To investigate the kinematics of field hockey goalkeeping during penalty corners, in order to provide the first model of performance from a physical standpoint during this particular and important phase of goalkeeping that goes from the injection of the ball (the push-in) up to the shot on goal during a penalty corner. In particular, the focus was on the preparation phase before the actual saves.
METHODS:
Four goalkeepers playing at the international level (age: 22±2.45 years; height: 1.85±0.09 m; body weight: 79.25±8.42 kg; BMI: 23.06±0.69 kg·m-2; role experience 11.5±1.91 years; international caps: 30.00±15.25) participated in the study. A complete video footage was recorded using two high-speed video cameras, using 210 fps sampling rates.
RESULTS:
The goalkeepers covered 1.48±0.32 m, using 3.23±0.43 steps, from the goal line in about 1.33±0.21 s. The estimated mean acceleration was 0.93±0.54 m·s-2. Differences in these parameters were found among the goalkeepers (One-Way ANOVA; p<0.05, ES as partial η²>0.14), also demonstratinga different technical efficiency in relation to the task to be performed.
CONCLUSIONS:
The results of this case study confirm that the principal aim of the goalkeepers during the preparation phase of defending penalty corners is to arrive in the best position of readiness within the available time frame of about 1.5 s. They ran out from the goal line about 1.5 m, not reaching an ideal better distance (≈ 4m), for tactical reasons, concerning the possible interventions of other attackers arriving close to the posts, to enlarge the goalmouth
Cnemaspis argus Dring 1979
No full textCnemaspis argus Dring, 1979 Argus Rock Gecko Fig. 30 Holotype. BM 1974.4911. Type locality: “ 790 m on the east ridge of Gunung Lawit”, Terengganu, Peninsular Malaysia. Diagnosis. Maximum SVL 65.2 mm; eight or nine supralabials; eight or nine infralabials; keeled ventral scales; 6–10 pore-bearing precloacal scales; 26–32 paravertebral tubercles; tubercles not linearly arranged, present on flanks; tubercles absent from lateral caudal furrows; no ventrolateral caudal tubercles, lateral row of caudal tubercles present; caudal tubercles not encircling tail; subcaudals keeled, no enlarged median scale row; 1–4 postcloacal tubercles on each side of tail base; no enlarged femoral or subtibial scales; subtibials keeled; no enlarged submetatarsal scales on first toe; 31–35 subdigital fourth toe lamellae; distinct black and white bands on tail (Tables 6,7). Color pattern (Fig. 30). Dorsal ground color greyish yellow; interorbital region green; yellow markings on head; paired, black, paravertebral, subelliptically shaped blotches extending from nape to tail and transforming into black bands; large patches of yellow tubercles and short transverse bars on flanks; limbs bearing faded, alternating, dark and light bands; non-regenerated tail bearing black and white bands; all ventral surfaces dull-white. Distribution. Cnemaspis argus is known from Gunung Lawit (Dring 1979) and newly reported here from Gunung Tebu, Terengganu 10 km to the north along the same mountain range (Fig. 3). Natural history. Dring (1979) reported Cnemaspis argus to occur at 790 m in elevation in primary forest from Gunung Lawit and Grismer (2011a) considered it an upland endemic that would probably never be seen again because the trail up to Gunung Lawit had become overgrown and lost. However, we did find additional populations from the base of Gunung Lawit at 230 m in elevation and on Gunung Tebu from 40 m in elevation at Hutan Lipur Lata Belatan up to 750 m near the peak. All lizards were seen on large granite rocks within the forest (Fig. 30). These data indicate that C. argus is not an upland endemic but a microhabitat specialist restricted to granite rocks wherever they may occur within its range. During the day, lizards remain wary and occur on the shady, vertical or inverted surfaces. They are in dark in overall coloration and difficult to approach. During the evening hours, lizards are much lighter in color and far less wary, tending to venture farther out onto the open areas of the boulders where they appear generally inactive. Relationships. Cnemaspis argus is most closely related to the sister species C. karsticola and C. perhentianensis (Fig. 2). Material examined. Malaysia: Terengganu, Gunung Lawit BM 1974.4910 – 11 (type series; photographs LSUDPC 2276–78), LSUHC 8304; Gunung Tebu LSUHC 10834–35, 10858–59.Published as part of Grismer, Lee, Wood, Perry L., Anuar, Shahrul, Riyanto, Awal, Ahmad, Norhayati, Muin, Mohd A., Sumontha, Montri, Grismer, Jesse L., Onn, Chan Kin, Quah, Evan S. H. & Pauwels, Olivier S. A., 2014, Systematics and natural history of Southeast Asian Rock Geckos (genus Cnemaspis Strauch, 1887) with descriptions of eight new species from Malaysia, Thailand, and Indonesia, pp. 1-147 in Zootaxa 3880 (1) on pages 62-63, DOI: 10.11646/zootaxa.3880.1.1, http://zenodo.org/record/494956
Cyrtodactylus elok Dring 1979
No full textCyrtodactylus elok Dring, 1979 Figure 17 Materials examined. Seroja Camp (04°39.415′N, 101° 16.333′E), 4 July 2019 (GKR019; HC1020). Identification. Body moderately robust; digits relatively short and slender, inflected; pupils elliptical, small; body smooth with very small, low tubercles from nap to base of tail; transversely enlarged, median subcaudal scales absent; tail prehensile, squarish in cross-section; fine, spiny fringe on tail; body brown to beige with darker irregular patches on nape and back; thin, short, pale postorbital stripe; limbs without bands; tail with dark bands anteriorly; iris silver. These characters are in agreement with Grismer (2011). Remarks. Two individuals were found near Seroja in a patch of forest dominated by bamboo. One individual was observed on a bamboo trunk approximately 1 m above ground, while the other was found on a slender branch of a sapling approximately 3 m above ground. Specimen GKR019 was a gravid female bearing two eggs.Published as part of Chan, Kin Onn, Muin, Mohd Abdul, Anuar, Shahrul, Andam, Joel, Razak, Norazlinda & Aziz, Mohd Azizol, 2019, First checklist on the amphibians and reptiles of Mount Korbu, the second highest peak in Peninsular Malaysia, pp. 1055-1069 in Check List 15 (6) on page 1065, DOI: 10.15560/15.6.105
Physical and physiological demands in women pole dance: A single case study
No full textWe investigated the physical and physiological demands of a pole dancer's performance studied during a simulated competition, lasting 3 min 30 seconds. One single woman pole dancer (age: 22 years; height: 1.56 m; body weight: 52 kg; BMI: 21.4 kg·nr2; estimated HRmax: 192.6 bpm) participated in the study. Physical data pertaining to accelerations and rotational values were collected by the means of a tri-axial accelerometer device integrating three gyroscopes. A complete video footage was recorded using four video cameras, using different sampling rates. Blood pressure (BP), heart rates (HR), breathing rates (BR), blood lactate concentrations (Bla-) were recorded during the performance. Accelerations (positive and negative), along the vertical axis reached ≈2G and rotational movements around the pole, reached ≈400°/s. BP values ranged from 120/75 before and to 145/58 mmHg at the end of performance, respectively. HRs reached a peak value of ≈96% of the maximal estimated heart rate (HRmax) and a mean %HRmax of 92.85±3.15% during the simulated competition. BR reached a peak value of 37 bpm and a mean value during competition of 31.87±3.42 bpm. Blaranged from 10.2 to 10.7 mmol/L measured at 1 min and 5 min after the completion of the competition, respectively. The results of this case study confirm that the Pole dance is a performing art requiring heavy physiological and physical demands on the performers. Specific training routines should be designed in order to cope efficiently with this physical activity, taking into account the performance model we provided with this study
Examining a teacher-led physically active mathematics intervention: teachers’ perceptions of the facilitators and barriers to implementation in UK primary schools
No full textIntroduction: This study aimed to address a gap in the literature by examining Key Stage One teachers’ perceptions of the facilitators and barriers to implementing physically active mathematics lessons in UK primary schools after administering a physically active mathematics intervention for 6 weeks. Incorporating physical activity into academic lessons presents a unique approach to increasing physical activity among children without compromising the time allotted for academic lessons.
Methods: The intervention was designed in collaboration with the participants and the research team. The study employed a mixed methods approach, utilizing a parallel design in which 14 current key stage one teachers (men = 1, women=13) participated. The participating teachers delivered 6 weeks of physically active mathematics lessons in their respective schools. Training (through two preparatory workshops), schemes of work, and equipment were provided to participants before the intervention began. Survey data were collected through pre- and post-intervention surveys and a weekly intervention delivery log. Participants engaged in individual semi-structured interviews post-intervention. Survey data were analyzed using descriptive statistical analysis.
Results: The combined average number of minutes participants could implement physically active mathematics lessons each week was 59 min. Paired samples t-tests revealed a significant increase in participants’ confidence in delivering physically active mathematics lessons from pre-intervention (M = 2.86, SD = 2.23) to post-intervention (M = 8.31, SD = 1.07; t (12) = −6.739, p < 0.001). Interview data were transcribed verbatim and analyzed through thematic analysis. Several facilitators and barriers to implementing PALs were identified. Key facilitators identified in this study included training, availability of ready-to-use resources, and increased teacher confidence. Furthermore, physically active lessons (PALs) were easier to implement in contexts where play-based learning approaches from the early years foundations stage could naturally extend into subsequent years. However, key barriers included classroom management challenges, time constraints, and space limitations. Additionally, the specific timing of implementation posed challenges, with cold weather restricting outdoor activities and Christmas-related commitments detracting from the time available for PALs.
Discussion: This study highlights the feasibility of implementing physically active mathematics lessons into the curriculum of UK primary schools and provides key considerations for schools aiming to successfully implement these lessons to best aid the implementation of physically active mathematics lessons
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
The rehearsal : as it is now acted at the Theatre-Royal
No full text[4], 59, [1] p. ; 23 cm. "The third edition with amendments [sic] and large additions by the author." Signatures: [A]², B-H⁴, I². Errors in paging: p. 28, 29, 32 misnumbered "27," "28," "31," respectively. By the Duke of Buckingham, assisted by Martin Clifford, Thomas Sprat, and others. Cf. Camb. Hist. Eng. Lit., and D.N.B. Discolored pages. Tight margins with text near gutter and page edges
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