Effect of pre-exercise ingestion of α-lactalbumin on subsequent endurance exercise performance and mood states

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

4 Scopus Citations
View graph of relations

Author(s)

  • Lu Qin
  • Feng-Hua Sun
  • Sinead Sheridan
  • Cindy Hui-Ping Sit
  • Stephen Heung-Sang Wong

Detail(s)

Original languageEnglish
Pages (from-to)22-29
Journal / PublicationBritish Journal of Nutrition
Volume121
Issue number1
Publication statusPublished - 14 Jan 2019
Externally publishedYes

Abstract

This study investigated the effect of pre-exercise α-lactalbumin ingestion on subsequent endurance exercise performance, muscle pain and mood states. In a two-stage cross-over counterbalance design, eleven male endurance runners (age: 31 (se 2) years, height: 169·5 (se 4·4) cm, weight: 63·6 (se 5·1) kg, VO2max: 58·8 (se 6·3) ml/kg per min) consumed two solutions (carbohydrate+α-lactalbumin, CA; carbohydrate+whey protein isolate, CW) 2 h before a self-paced 21-km run. Creatine kinase, IL-6, muscle pain, pressure pain threshold (PPT) and mood states were assessed 2 h before exercise, immediately before exercise (Pre-ex0) and immediately after exercise (Post-ex0). No difference was found in 21-km running performance between two trials (CA v. CW: 115·85 (se 5·20) v. 118·85 (se 5·51) min, P=0·48). Compared with CW, CA led to higher PPT at Pre-ex0 (41·77 (se 2·27) v. 35·56 (se 2·10) N/cm 2 , P<0·01) and Post-ex0 (38·76 (se 3·23) v. 35·30 (se 3·55) N/cm 2 , P=0·047). Compared with CW, CA reduced the feeling of fatigue at Post-ex0 (P<0·01); CA also reduced salivary cortisol levels at Post-ex0 (0·72 (se 0·07) v. 0·83 (se 0·13) ng/ml, P<0·01). In conclusion, the ingestion of α-lactalbumin did not improve the 21-km time-trial performance. However, compared with the pre-exercise ingestion of whey protein, that of α-lactalbumin led to superior results during similar levels of endurance exercise: it elevated PPT and reduced the feeling of fatigue and the cortisol levels.

Research Area(s)

  • Half-marathons, Pain, Stress, Time trials

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Effect of pre-exercise ingestion of α-lactalbumin on subsequent endurance exercise performance and mood states. / Qin, Lu; Sun, Feng-Hua; Huang, Yu; Sheridan, Sinead; Sit, Cindy Hui-Ping; Wong, Stephen Heung-Sang.

In: British Journal of Nutrition, Vol. 121, No. 1, 14.01.2019, p. 22-29.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review