The Physical Working Capacity of Healthy Black Children

Physical activity, cardiorespiratory fitness, motor performance, and growth of senegalese pre‐adolescents

“…In this condition, the power delivered at a frequency of 170 beatslmin varied between 55-61 W (boys) and 47-60 W (girls). These are much lower values than the 79-87 W observed in healthy African American children (Strong et al, 1978).…”

Determinants of physical ability in 7th grade schoolchildren

“…Boys achieved the shortest TIME and girls (M +) the longest. Differences in physical ability between boys and girls have been shown in previous studies (12). In the "know your body" study using the pulse response to a modified Harvard Step test, it was shown that girls scored significantly worse than boys (15) However, the menarchial status was not considered in the study.…”

The PWC170: comparison of different stage lengths in 11–16 year olds

“…Historically, the PWC test has been widely used due to cost, feasibility, and submaximal eVort. Recently, 3-min (Mocellin et al 1971;Strong et al 1978;McMurray et al 1998) and 2-min stages (PfeiVer et al 2007;Lohman et al 2008) have been used instead of the original 6-min stages (Bengtsson 1956). From a practical standpoint, the use of the shorter stage lengths is due to the need for time-eYcient testing in large school-based studies.…”

“…Others have shown mixed results concerning the validity of the PWC test as a measure of maximal aerobic capacity. Some have observed high correlations between VO 2max and PWC test (r = 0.81-0.84) indicating that the PWC test is a suYcient method of estimating maximal aerobic capacity (Strong et al 1978;Boreham et al 1990;Heyman et al 2006). However, when Heyman et al (2006) controlled for lean mass the correlation decreased (from r = 0.81 to 0.6).…”