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Physical fitness of elite women's rugby union players over a ...

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skinfold thickness throughout the season. With the greater mobility <strong>of</strong> <strong>rugby</strong> <strong>players</strong><br />

associated with body fat levels and higher lean muscle mass (Olds, 2001), sport nutrition<br />

counseling and direction supervision <strong>of</strong> training will be most beneficial to the <strong>players</strong>.<br />

With respect to the forwards, although skinfold thickness decreased throughout the season, it<br />

was only significant when a comparison was made between pre-season and post-season<br />

testing. The decrease in skinfold thickness (from 137.40 ± 30.08 mm to 116.84 ± 20.01 mm)<br />

may be attributed to the <strong>players</strong> perhaps starting the season with higher than optimal skinfold<br />

values as a result <strong>of</strong> inactivity or low levels <strong>of</strong> physical activity during the <strong>of</strong>f-season and then<br />

undergoing high levels <strong>of</strong> aerobic, anaerobic, position specific skills (scrumming and mauling)<br />

and weight training combined with calorie restriction diet during the season.<br />

5.2.4 Percentage Body Fat<br />

Several researchers have reported that forwards generally posses greater estimated percentage<br />

body values than backs (Duthie, et al., 2003). As expected, this research revealed that<br />

forwards carry a higher percentage <strong>of</strong> body fat than backs. Whilst additional body fat may<br />

serve as a protective buffer from injury, excess body fat acts as “dead weight” thus adversely<br />

affecting the player’s work rate and speed (Duthie et al., 2003). The percentage body fat <strong>of</strong> SA<br />

<strong>elite</strong> women <strong>rugby</strong> <strong>union</strong> backs and forwards was calculated to be 23.81 ± 3.28 % and 29.10 ±<br />

5.6 %, respectively. These values are higher to those reported for England female <strong>rugby</strong> <strong>union</strong><br />

backs (21.2 ± 1.7 %) and forwards (26.11 ± 4.56 %) at the same testing period (Kirby &<br />

Reilly, 1996). A likely explanation for the lower percentage body fat measurement amongst<br />

81

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