امروز یکشنبه , 18 شهریور 1403
شنبه تا پنج شنبه - 9 صبح الی 20 عصر
دانلود مقاله Maturation to elite status: a six-year physiological case study of a world champion rowing crew
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دانلود مقاله
Maturation to elite status: a six-year physiological case study of a world champion rowing crew
نویسنده :
Pavle Mikulic
فرمت:pdf
This case study reports the results of a 6-year
(2005–2010) follow-up study of a world-class rowing crew,
the current world champions. The rowers were 15–16 years
old and prospective competitors at the junior level when
the study began in 2005, and we monitored their physical,
physiological, and rowing ergometer performance data
annually. Our findings indicated that over the 6-year period
gains in stature, averaged across rowers, amounted to only
?2 cm (?1%). In contrast, body mass increased by ?9 kg
(?10%) and fat-free mass by ?11 kg (?15%). A significant
linear trend (, P\0.001) and a ?26%
increase in maximal oxygen uptake (in L min-1) was
evident from 2005 to 2009, resulting in a leveling-off and a
crew average of *6.6 L min-1 (*70 mL kg-1 min-1)
during the last 2 years of assessment. Power output at
anaerobic threshold increased by ?23%, subsequently
amounting to a crew average of 359 W in 2010. Oxygen
uptake at anaerobic threshold, expressed as a percentage of
maximal oxygen uptake, changed little and ranged between
82 and 85%. A curvilinear regression provided the best fit
to describe the 6-year improvement (?7%) in 2000 m
(, P\0.001) and 6000 m (,
P\0.001) rowing ergometer performance times. Performance-
related physical and physiological parameters seem
to level-off at about 20 years of age, which may partly
explain the corresponding stabilization in ergometer performance
times over the last years of assessment.