13 research outputs found
Differences in Male and Female Scapular Strength and the Relationship to Sprint Swimming Performance
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Association of Body Composition to Aerobic Capacity and Swimming Performance in Adult Fitness Swimmers
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Association Between Aerobic Combat Swimming Performance and Anaerobic Kicking Power in Adult Fitness Swimmers
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Reliability and Validity of a Flume-Based Maximal Oxygen Uptake Swimming Test
A mode-specific swimming protocol to assess maximal aerobic uptake (VO2maxsw) is vital to accurately evaluate swimming performance. A need exists for reliable and valid swimming protocols that assess VO2maxsw in a flume environment. The purpose was to assess: (a) reliability and (b) āperformanceā validity of a VO2maxsw flume protocol using the 457-m freestyle pool performance swim (PS) test as the criterion. Nineteen males (n = 9) and females (n = 10) (age, 28.5 Ā± 8.3 years.; height, 174.7 Ā± 8.2 cm; mass, 72.9 Ā± 12.5 kg; %body fat, 21.4 Ā± 5.9) performed two flume VO2maxsw tests (VO2maxswA and VO2maxswB) and one PS test [457 m (469.4 Ā± 94.7 s)]. For testāretest reliability (Trials A vs. B), moderately strong relationships were established for VO2maxsw (mLĀ·kgā1Ā·minā1)(r= 0.628, p = 0.002), O2pulse (mL O2Ā·beatā1)(r = 0.502, p = 0.014), VEmax (LĀ·minā1) (r = 0.671, p = 0.001), final test time (sec) (0.608, p = 0.004), and immediate post-test blood lactate (IPE (BLa)) (0.716, p = 0.001). For performance validity, moderately strong relationships (p \u3c 0.05) were found between VO2maxswA (r =ā0.648, p = 0.005), O2pulse (r= ā0.623, p = 0.008), VEmax (r = ā0.509 p = 0.037), and 457-m swim times. The swimming flume protocol examined is a reliable and valid assessment of VO2maxsw., and offers an alternative for military, open water, or those seeking complementary forms of training to improve swimming performance
Hazardous explosive eruptions of a recharging multi-cyclic island arc caldera
Caldera-forming eruptions of silicic volcanic systems are among the most
devastating events on Earth. By contrast, post-collapse volcanic activity
initiating new caldera cycles is generally considered less hazardous.
Formed after Santoriniās latest caldera-forming eruption of ~1600ābce, the
Kameni Volcano in the southern Aegean Sea enables the eruptive evolution
of a recharging multi-cyclic caldera to be reconstructed. Santoriniās
eruptive record has been documented by onshore products and historical
descriptions of mainly effusive eruptions dating back to 197ābce. Here we
combine high-resolution seismic reflection data with cored lithologies
from International Ocean Discovery Program Expedition 398 at four sites to
determine the submarine architecture and volcanic history of intra-caldera
deposits from Kameni. Our shore-crossing analysis reveals the deposits
of a submarine explosive eruption that produced up to 3.1ākm3
of pumice
and ash, which we relate to a historical eruption in 726āce. The estimated
volcanic explosivity index of magnitude 5 exceeds previously considered
worst-case eruptive scenarios for Santorini. Our finding that the Santorini
caldera is capable of producing large explosive eruptions at an early stage
in the caldera cycle implies an elevated hazard potential for the eastern
Mediterranean region, and potentially for other recharging silicic calderas
Intermittent Theta Burst Stimulation Does Not Improve Reaction Speeds in Females with Anterior Cruciate Ligament Injuries
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Lower Extremity Motor Evoked Potential Latency as a Biomarker for Warfighter Fatigue: Preliminary Data
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Initial Observations on the Influence of Cognitive Stress on Motor Evoked Potentials in Military Personnel
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Relationship Between Land-Based Performance Assessments and Swimming Force During Combat Swim Flutterkick
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Reliability and Validity of a Flume-Based Maximal Oxygen Uptake Swimming Test
A mode-specific swimming protocol to assess maximal aerobic uptake (VO2maxsw) is vital to accurately evaluate swimming performance. A need exists for reliable and valid swimming protocols that assess VO2maxsw in a flume environment. The purpose was to assess: (a) reliability and (b) āperformanceā validity of a VO2maxsw flume protocol using the 457-m freestyle pool performance swim (PS) test as the criterion. Nineteen males (n = 9) and females (n = 10) (age, 28.5 Ā± 8.3 years.; height, 174.7 Ā± 8.2 cm; mass, 72.9 Ā± 12.5 kg; %body fat, 21.4 Ā± 5.9) performed two flume VO2maxsw tests (VO2maxswA and VO2maxswB) and one PS test [457 m (469.4 Ā± 94.7 s)]. For testāretest reliability (Trials A vs. B), moderately strong relationships were established for VO2maxsw (mLĀ·kgā1Ā·minā1)(r= 0.628, p = 0.002), O2pulse (mL O2Ā·beatā1)(r = 0.502, p = 0.014), VEmax (LĀ·minā1) (r = 0.671, p = 0.001), final test time (sec) (0.608, p = 0.004), and immediate post-test blood lactate (IPE (BLa)) (0.716, p = 0.001). For performance validity, moderately strong relationships (p 2maxswA (r =ā0.648, p = 0.005), O2pulse (r= ā0.623, p = 0.008), VEmax (r = ā0.509 p = 0.037), and 457-m swim times. The swimming flume protocol examined is a reliable and valid assessment of VO2maxsw., and offers an alternative for military, open water, or those seeking complementary forms of training to improve swimming performance