Anaerobic performances in Black and White subjects

Ama, P F; Lagassé, Pierre P.; Bouchard, Claude; Simoneau, J. A.

doi:10.1249/00005768-199008000-00015

Cited by 17 publications

(11 citation statements)

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“…Since the two groups of the present study performed similarly, their similar F 0 values are in line with BretÕs data. This result is also in accordance with the data obtained by Ama et al (1990) on 32 Black and White sedentary subjects. They found no significant differences between the two populations in terms of maximum isometric force measured during knee extension.…”

Section: Leg Strengthsupporting

confidence: 93%

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Differences in morphology and force/velocity relationship between Senegalese and Italian sprinters

Rahmani¹,

Locatelli²,

Lacour³

2004

European Journal of Applied Physiology

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In order to investigate whether the supremacy of African sprinters is related to the leg extensor force/velocity relationship or to leg morphology, two groups of elite sprinters originating respectively from Senegal (S) and Italy (I) were compared in this respect. The groups included 13 S and 15 I male sprinters. Their mean best performances over 100 m during the preceding track and field season were 10.66 (0.3) and 10.61 (0.3) s (NS), respectively. Age, height and mass were similar in the two groups. The force/velocity relationship of the leg extensors was assessed during maximal half-squats on a guided horizontal barbell with masses of 20-140 kg added on the shoulders. Leg morphology was assessed by relating the sub-ischial length to the standing height (L/H) and by measuring the inertia in the vertical (IZ in kg.cm2), antero-posterior (IY, kg.cm2) and medio-lateral (IX, kg.m2) planes. The two groups developed non-different force and power when lifting the heaviest loads. Inversely, the lighter the load, the lower the force and power developed by S, as compared to I (P<0.001). S demonstrated greater L/H (P<0.001), and 26% lower IZ (P<0.01), 15% lower IY (P=0.09), and 14% lower IX (P=0.10). These results suggest that S and I sprinters were similar as regards the muscle abilities involved in slow maximal contractions. However, S demonstrated lower values in muscle abilities related to high-speed contractions, suggesting that S sprinters had a lower percentage of fast twitch fibres. This is likely to be compensated for by the lower level of internal work due to longer and lighter legs.

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Section: Leg Strengthsupporting

confidence: 93%

“…In general, Blacks (children and adults) have been shown to perform better in sprinting events than Whites (Malina 1988). Some authors try to explain this supremacy by relating the superior sprint/jump performance to anaerobic capacities in Blacks (Ama et al 1990), or to their greater percentage of fast-twitch fibres (Ama et al 1986).…”

Section: Introductionmentioning

confidence: 99%

Differences in morphology and force/velocity relationship between Senegalese and Italian sprinters

Rahmani¹,

Locatelli²,

Lacour³

2004

European Journal of Applied Physiology

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show abstract

“…One study was found on racial differences between Blacks and Whites in maximal strength and power during sustained leg contractions and this study did not support our finding here. Ama et al (6) found no Black/White differences in maximal strength or maximum power output. However, on total leg work output, racial differences became progressively larger so that by 90 seconds of leg contractions Whites had produced more total work than Blacks.…”

Section: F Racial Differences In Fitness During Bctmentioning

confidence: 93%

Secular Trends in the Physical Fitness of American Youth, Young Adults and Army Recruits

Knapik¹,

Sharp²,

Jones³

et al. 2004

PsycEXTRA Dataset

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“…In general, particular sports such as football, basketball, and track sprinting are regarded as more appropriate for African Americans than European Americans. Previous attempts to explain racial disparity in sport performance and participation patterns in particular sports have been relegated to anthropometric (Meredith & Spurgeon 1980), physiological, biological (Ama, Lagasse, Bouchard, & Simoneau, 1990), and sociological (Coakley, 1998) interpretations. There has been a challenge to alleviate the dearth of research and information addressing the psychological factors possibly associated with racial differences in performance and participation patterns in sport and physical activity (Duda & Allison, 1990).…”

Section: R Ecen T Research Efforts Have Clearly Demonstrated Thatmentioning

confidence: 99%

Perceived Physical Ability as a Function of Race and Racial Comparison

Harrison

2001

Research Quarterly for Exercise and Sport

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Anaerobic performances in Black and White subjects

Cited by 17 publications

References 0 publications

Differences in morphology and force/velocity relationship between Senegalese and Italian sprinters

Differences in morphology and force/velocity relationship between Senegalese and Italian sprinters

Secular Trends in the Physical Fitness of American Youth, Young Adults and Army Recruits

Perceived Physical Ability as a Function of Race and Racial Comparison

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