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In the study, it was aimed to figure out the relationship between irrigation and cotton plant yield (Gossypium hirsutum L.) under different conditions created by applying different irrigation water levels by using Subsurface Drip Irrigation System in the area of Harran University, representing the conditions of the Harran Plain in Şanlıurfa, Türkiye in 2019 and 2020. The irrigation issues; 125% (v/v), 100% (v/v), 75% (v/v), 50% (v/v), and 25% (v/v) were created according to the amount of evaporation obtained from Class A Pan for both years but, the issue of 150% (v/v) as over-irrigation issue was added in the study belonging to 2020 for understanding the statistical reliability of the optimum irrigation issue obtained. While amount of irrigation water used was 933.75-196.75 mm in 2019, it was 1138.5-189.75 mm in 2020. The other parameters of irrigation such as Class A-Pan coefficient (Kcp), plant water consumption (ET), soil water change in the effective root zone (ΔS, mm), water use efficiency (WUE), and irrigation water use efficiency (IWUE) were determined. The yield parameters such as seed cotton yield (kg ha-1), ginning out turn (%), 100 grain weight (g), cotton boll weight (g), number of bolls per plant, plant height (cm) were obtained. Fiber quality parameters such as fiber index (%), fiber length (mm), fiber uniformity index (%), fiber strength (g tex-1), fiber fineness (mic), fiber elongation at break (Elg) were studied. In conclusion, the Kcp value for both years was determined as 1.25. The results obtained in the study will support further studies in the field. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Sports Education / Spor Eğitim Dergisi is the property of Journal of Sports Education / Spor Egitim Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mediterranean Journal of Sport Science (MJSS) is the property of Mediterranean Journal of Sport Science (MJSS) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The muscle fatigue can be expressed as decrease in maximal voluntary force generating capacity of the neuromuscular system as a result of peripheral changes at the level of the muscle, and also failure of the central nervous system to drive the motoneurons adequately. In this study, a muscle fatigue detection method based on frequency spectrum of electromyogram (EMG) and mechanomyogram (MMG) has been presented. The EMG and MMG data were obtained from 31 healthy, recreationally active men at the onset, and following exercise. All participants were performed a maximally exercise session in a motor-driven treadmill by using standard Bruce protocol which is the most widely used test to predict functional capacity. The method used in the present study consists of pre-processing, determination of the energy value based on wavelet packet transform, and classification phases. The results of the study demonstrated that changes in the MMG 176-234 Hz and EMG 254-313 Hz bands are critical to determine for muscle fatigue occurred following maximally exercise session. In conclusion, our study revealed that an algorithm with EMG and MMG combination based on frequency spectrum is more effective for the detection of muscle fatigue than EMG or MMG alone. [ABSTRACT FROM AUTHOR]

Exercise-induced hypoalgesia (EIH) typically reported during and/or following exercise, but less is known the mechanisms responsible for EIH. Previous reports suggest that melatonin plays a role in pain modulation. In this study, we investigated the role of melatonin on pain threshold at rest, and following exercise in both sedentary and exercise trained rats under light-induced functional pinealectomy. Male wistar rats were assigned to one of four groups: sedentary control (C), sedentary pinealectomized (Px), exercise trained (T), and trained under pinealectomy (T-Px) groups. Exercise trained groups were subjected to eight?weeks of motor-driven treadmill exercise. C and T groups exposed to normal light/dark cycle (12:12-h light/dark cycle) and Px and T-Px rats exposed to continuous light for eight?weeks. Hot-plate test was repeated before and after melatonin injection and paw withdrawal latencies were recorded as pain threshold. Acute exercise resulted increased pain threshold in all groups. Animals in T group had significantly highest pain thresholds compared with other groups, and pinealectomy resulted decreased pain threshold in trained animals both at rest, and following exercise. Pain threshold in T-Px group was found to be increased after melatonin administration. Our findings support the hypothesis that melatonin plays a role on hypoalgesic response in exercise-trained rats. [ABSTRACT FROM AUTHOR]

Objective: We investigated the effects of six months vitamin E administration on cognition evaluated by event-related potentials in exercising older subjects. Design: Randomised controlled trial. Setting: Retirement home in Antalya, Turkey. Participants: Fifty-seven adults aged 60-85 years were randomly assigned to one of four groups: sedentary control (C), vitamin E (V), exercise training (E) and vitamin E under training (EV). Intervention: V and EV groups were received vitamin E at a dose of 900 IU/day P.O. for 6 months. Trained groups were subjected to walking exercise involved 3 sessions per week for 6 months. Walking duration was gradually increased during 8 weeks, and stayed constant until the end of training period. Participants were begun walking at % 70 heart rate reserve for 20 min/day at the first two weeks, and walking duration was increased by 5 minutes/day of each week until subjects were reached a level of 50 min/day by week 8. Measurements Plasma vitamin E concentration, total antioxidant capacity and two parameters of event-related potentials namely P3 latency and amplitude were performed on all study groups both before and after training. Results: Significant improvement in P3 latency was found in exercising groups. However, no significant differences were found between vitamin and other groups for P3 latency. Amplitude measurements were found unaltered among all groups. Conclusion: We concluded that although six months training results improvement in P3 latency, vitamin E supplementation does not affect cognitive function evaluated by event-related potentials in older subjects. [ABSTRACT FROM AUTHOR]