Aerobic capacity, activity levels and daily energy expenditure in male and female adolescents of the kenyan nandi sub-group

Alexander R Gibson, Robert Ojiambo, Kenn Konstabel, Daniel E Lieberman, John J Reilly, John R Speakman, Yannis P Pitsiladis

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The relative importance of genetic and socio-cultural influences contributing to the success of east Africans in endurance athletics remains unknown in part because the pre-training phenotype of this population remains incompletely assessed. Here cardiopulmonary fitness, physical activity levels, distance travelled to school and daily energy expenditure in 15 habitually active male (13.9±1.6 years) and 15 habitually active female (13.9±1.2) adolescents from a rural Nandi primary school are assessed. Aerobic capacity ([Formula: see text]) was evaluated during two maximal discontinuous incremental exercise tests; physical activity using accelerometry combined with a global positioning system; and energy expenditure using the doubly labelled water method. The [Formula: see text] of the male and female adolescents were 73.9±5.7 ml(.) kg(-1.) min(-1) and 61.5±6.3 ml(.) kg(-1.) min(-1), respectively. Total time spent in sedentary, light, moderate and vigorous physical activities per day was 406±63 min (50% of total monitored time), 244±56 min (30%), 75±18 min (9%) and 82±30 min (10%). Average total daily distance travelled to and from school was 7.5±3.0 km (0.8-13.4 km). Mean daily energy expenditure, activity-induced energy expenditure and physical activity level was 12.2±3.4 MJ(.) day(-1), 5.4±3.0 MJ(.) day(-1) and 2.2±0.6. 70.6% of the variation in [Formula: see text] was explained by sex (partial R(2) = 54.7%) and body mass index (partial R(2) = 15.9%). Energy expenditure and physical activity variables did not predict variation in [Formula: see text] once sex had been accounted for. The highly active and energy-demanding lifestyle of rural Kenyan adolescents may account for their exceptional aerobic fitness and collectively prime them for later training and athletic success.
LanguageEnglish
Article numbere66552
Number of pages8
JournalPLOS One
Volume8
Issue number6
DOIs
Publication statusPublished - 2013

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energy expenditure
physical activity
Energy Metabolism
Exercise
sports
Sports
accelerometry
Accelerometry
Geographic Information Systems
exercise test
elementary schools
gender
global positioning systems
Exercise Test
lifestyle
body mass index
Global positioning system
Life Style
Durability
Body Mass Index

Keywords

  • aerobic capacity
  • activity levels
  • energy expenditure
  • male
  • female
  • adolescents
  • kenyan nandi sub-group

Cite this

Gibson, Alexander R ; Ojiambo, Robert ; Konstabel, Kenn ; Lieberman, Daniel E ; Reilly, John J ; Speakman, John R ; Pitsiladis, Yannis P. / Aerobic capacity, activity levels and daily energy expenditure in male and female adolescents of the kenyan nandi sub-group. In: PLOS One. 2013 ; Vol. 8, No. 6.
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Aerobic capacity, activity levels and daily energy expenditure in male and female adolescents of the kenyan nandi sub-group. / Gibson, Alexander R; Ojiambo, Robert; Konstabel, Kenn; Lieberman, Daniel E; Reilly, John J; Speakman, John R; Pitsiladis, Yannis P.

In: PLOS One, Vol. 8, No. 6, e66552, 2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Aerobic capacity, activity levels and daily energy expenditure in male and female adolescents of the kenyan nandi sub-group

AU - Gibson, Alexander R

AU - Ojiambo, Robert

AU - Konstabel, Kenn

AU - Lieberman, Daniel E

AU - Reilly, John J

AU - Speakman, John R

AU - Pitsiladis, Yannis P

PY - 2013

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N2 - The relative importance of genetic and socio-cultural influences contributing to the success of east Africans in endurance athletics remains unknown in part because the pre-training phenotype of this population remains incompletely assessed. Here cardiopulmonary fitness, physical activity levels, distance travelled to school and daily energy expenditure in 15 habitually active male (13.9±1.6 years) and 15 habitually active female (13.9±1.2) adolescents from a rural Nandi primary school are assessed. Aerobic capacity ([Formula: see text]) was evaluated during two maximal discontinuous incremental exercise tests; physical activity using accelerometry combined with a global positioning system; and energy expenditure using the doubly labelled water method. The [Formula: see text] of the male and female adolescents were 73.9±5.7 ml(.) kg(-1.) min(-1) and 61.5±6.3 ml(.) kg(-1.) min(-1), respectively. Total time spent in sedentary, light, moderate and vigorous physical activities per day was 406±63 min (50% of total monitored time), 244±56 min (30%), 75±18 min (9%) and 82±30 min (10%). Average total daily distance travelled to and from school was 7.5±3.0 km (0.8-13.4 km). Mean daily energy expenditure, activity-induced energy expenditure and physical activity level was 12.2±3.4 MJ(.) day(-1), 5.4±3.0 MJ(.) day(-1) and 2.2±0.6. 70.6% of the variation in [Formula: see text] was explained by sex (partial R(2) = 54.7%) and body mass index (partial R(2) = 15.9%). Energy expenditure and physical activity variables did not predict variation in [Formula: see text] once sex had been accounted for. The highly active and energy-demanding lifestyle of rural Kenyan adolescents may account for their exceptional aerobic fitness and collectively prime them for later training and athletic success.

AB - The relative importance of genetic and socio-cultural influences contributing to the success of east Africans in endurance athletics remains unknown in part because the pre-training phenotype of this population remains incompletely assessed. Here cardiopulmonary fitness, physical activity levels, distance travelled to school and daily energy expenditure in 15 habitually active male (13.9±1.6 years) and 15 habitually active female (13.9±1.2) adolescents from a rural Nandi primary school are assessed. Aerobic capacity ([Formula: see text]) was evaluated during two maximal discontinuous incremental exercise tests; physical activity using accelerometry combined with a global positioning system; and energy expenditure using the doubly labelled water method. The [Formula: see text] of the male and female adolescents were 73.9±5.7 ml(.) kg(-1.) min(-1) and 61.5±6.3 ml(.) kg(-1.) min(-1), respectively. Total time spent in sedentary, light, moderate and vigorous physical activities per day was 406±63 min (50% of total monitored time), 244±56 min (30%), 75±18 min (9%) and 82±30 min (10%). Average total daily distance travelled to and from school was 7.5±3.0 km (0.8-13.4 km). Mean daily energy expenditure, activity-induced energy expenditure and physical activity level was 12.2±3.4 MJ(.) day(-1), 5.4±3.0 MJ(.) day(-1) and 2.2±0.6. 70.6% of the variation in [Formula: see text] was explained by sex (partial R(2) = 54.7%) and body mass index (partial R(2) = 15.9%). Energy expenditure and physical activity variables did not predict variation in [Formula: see text] once sex had been accounted for. The highly active and energy-demanding lifestyle of rural Kenyan adolescents may account for their exceptional aerobic fitness and collectively prime them for later training and athletic success.

KW - aerobic capacity

KW - activity levels

KW - energy expenditure

KW - male

KW - female

KW - adolescents

KW - kenyan nandi sub-group

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DO - 10.1371/journal.pone.0066552

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